From 511bf6e1c7a3c2bf00d9c6d62f397b90aab55581 Mon Sep 17 00:00:00 2001 From: clubby789 Date: Sat, 13 Jan 2024 19:14:02 +0000 Subject: [PATCH 01/25] Add note to resolve error about generics from inside static/const --- compiler/rustc_resolve/messages.ftl | 4 ++ compiler/rustc_resolve/src/diagnostics.rs | 8 +++- compiler/rustc_resolve/src/errors.rs | 10 ++++ compiler/rustc_resolve/src/ident.rs | 30 ++++++++---- compiler/rustc_resolve/src/late.rs | 46 +++++++++++-------- compiler/rustc_resolve/src/lib.rs | 6 ++- tests/ui/inner-static-type-parameter.stderr | 2 + ...om-outer-item-in-const-item.default.stderr | 6 +++ ...m-in-const-item.generic_const_items.stderr | 6 +++ ...65025-extern-static-parent-generics.stderr | 2 + ...e-65035-static-with-parent-generics.stderr | 10 ++++ 11 files changed, 98 insertions(+), 32 deletions(-) diff --git a/compiler/rustc_resolve/messages.ftl b/compiler/rustc_resolve/messages.ftl index 3f8df16e03f77..1947107235b2c 100644 --- a/compiler/rustc_resolve/messages.ftl +++ b/compiler/rustc_resolve/messages.ftl @@ -119,12 +119,16 @@ resolve_generic_params_from_outer_item = .refer_to_type_directly = refer to the type directly here instead .suggestion = try introducing a local generic parameter here +resolve_generic_params_from_outer_item_const = a `const` is a separate item from the item that contains it + resolve_generic_params_from_outer_item_const_param = const parameter from outer item resolve_generic_params_from_outer_item_self_ty_alias = `Self` type implicitly declared here, by this `impl` resolve_generic_params_from_outer_item_self_ty_param = can't use `Self` here +resolve_generic_params_from_outer_item_static = a `static` is a separate item from the item that contains it + resolve_generic_params_from_outer_item_ty_param = type parameter from outer item diff --git a/compiler/rustc_resolve/src/diagnostics.rs b/compiler/rustc_resolve/src/diagnostics.rs index 0d744238eeb42..46da5b9d2e46d 100644 --- a/compiler/rustc_resolve/src/diagnostics.rs +++ b/compiler/rustc_resolve/src/diagnostics.rs @@ -561,13 +561,19 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { resolution_error: ResolutionError<'a>, ) -> DiagnosticBuilder<'_> { match resolution_error { - ResolutionError::GenericParamsFromOuterItem(outer_res, has_generic_params) => { + ResolutionError::GenericParamsFromOuterItem(outer_res, has_generic_params, def_kind) => { use errs::GenericParamsFromOuterItemLabel as Label; + let static_or_const = match def_kind { + DefKind::Static(_) => Some(errs::GenericParamsFromOuterItemStaticOrConst::Static), + DefKind::Const => Some(errs::GenericParamsFromOuterItemStaticOrConst::Const), + _ => None, + }; let mut err = errs::GenericParamsFromOuterItem { span, label: None, refer_to_type_directly: None, sugg: None, + static_or_const, }; let sm = self.tcx.sess.source_map(); diff --git a/compiler/rustc_resolve/src/errors.rs b/compiler/rustc_resolve/src/errors.rs index 1fdb193e571f1..bd00cab66b0aa 100644 --- a/compiler/rustc_resolve/src/errors.rs +++ b/compiler/rustc_resolve/src/errors.rs @@ -44,6 +44,16 @@ pub(crate) struct GenericParamsFromOuterItem { pub(crate) refer_to_type_directly: Option, #[subdiagnostic] pub(crate) sugg: Option, + #[subdiagnostic] + pub(crate) static_or_const: Option, +} + +#[derive(Subdiagnostic)] +pub(crate) enum GenericParamsFromOuterItemStaticOrConst { + #[note(resolve_generic_params_from_outer_item_static)] + Static, + #[note(resolve_generic_params_from_outer_item_const)] + Const, } #[derive(Subdiagnostic)] diff --git a/compiler/rustc_resolve/src/ident.rs b/compiler/rustc_resolve/src/ident.rs index 3a31addb10933..2770f3fa5a41c 100644 --- a/compiler/rustc_resolve/src/ident.rs +++ b/compiler/rustc_resolve/src/ident.rs @@ -10,9 +10,7 @@ use rustc_span::symbol::{kw, Ident}; use rustc_span::Span; use crate::errors::{ParamKindInEnumDiscriminant, ParamKindInNonTrivialAnonConst}; -use crate::late::{ - ConstantHasGenerics, HasGenericParams, NoConstantGenericsReason, PathSource, Rib, RibKind, -}; +use crate::late::{ConstantHasGenerics, NoConstantGenericsReason, PathSource, Rib, RibKind}; use crate::macros::{sub_namespace_match, MacroRulesScope}; use crate::BindingKey; use crate::{errors, AmbiguityError, AmbiguityErrorMisc, AmbiguityKind, Determinacy, Finalize}; @@ -1090,7 +1088,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { | RibKind::ForwardGenericParamBan => { // Nothing to do. Continue. } - RibKind::Item(_) | RibKind::AssocItem => { + RibKind::Item(..) | RibKind::AssocItem => { // This was an attempt to access an upvar inside a // named function item. This is not allowed, so we // report an error. @@ -1155,7 +1153,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { } Res::Def(DefKind::TyParam, _) | Res::SelfTyParam { .. } | Res::SelfTyAlias { .. } => { for rib in ribs { - let has_generic_params: HasGenericParams = match rib.kind { + let (has_generic_params, def_kind) = match rib.kind { RibKind::Normal | RibKind::FnOrCoroutine | RibKind::Module(..) @@ -1213,7 +1211,9 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { } // This was an attempt to use a type parameter outside its scope. - RibKind::Item(has_generic_params) => has_generic_params, + RibKind::Item(has_generic_params, def_kind) => { + (has_generic_params, def_kind) + } RibKind::ConstParamTy => { if let Some(span) = finalize { self.report_error( @@ -1231,7 +1231,11 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { if let Some(span) = finalize { self.report_error( span, - ResolutionError::GenericParamsFromOuterItem(res, has_generic_params), + ResolutionError::GenericParamsFromOuterItem( + res, + has_generic_params, + def_kind, + ), ); } return Res::Err; @@ -1239,7 +1243,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { } Res::Def(DefKind::ConstParam, _) => { for rib in ribs { - let has_generic_params = match rib.kind { + let (has_generic_params, def_kind) = match rib.kind { RibKind::Normal | RibKind::FnOrCoroutine | RibKind::Module(..) @@ -1276,7 +1280,9 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { continue; } - RibKind::Item(has_generic_params) => has_generic_params, + RibKind::Item(has_generic_params, def_kind) => { + (has_generic_params, def_kind) + } RibKind::ConstParamTy => { if let Some(span) = finalize { self.report_error( @@ -1295,7 +1301,11 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { if let Some(span) = finalize { self.report_error( span, - ResolutionError::GenericParamsFromOuterItem(res, has_generic_params), + ResolutionError::GenericParamsFromOuterItem( + res, + has_generic_params, + def_kind, + ), ); } return Res::Err; diff --git a/compiler/rustc_resolve/src/late.rs b/compiler/rustc_resolve/src/late.rs index b9e603a499266..e54f8bafefc77 100644 --- a/compiler/rustc_resolve/src/late.rs +++ b/compiler/rustc_resolve/src/late.rs @@ -181,7 +181,7 @@ pub(crate) enum RibKind<'a> { FnOrCoroutine, /// We passed through an item scope. Disallow upvars. - Item(HasGenericParams), + Item(HasGenericParams, DefKind), /// We're in a constant item. Can't refer to dynamic stuff. /// @@ -221,7 +221,7 @@ impl RibKind<'_> { | RibKind::MacroDefinition(_) | RibKind::ConstParamTy | RibKind::InlineAsmSym => false, - RibKind::AssocItem | RibKind::Item(_) | RibKind::ForwardGenericParamBan => true, + RibKind::AssocItem | RibKind::Item(..) | RibKind::ForwardGenericParamBan => true, } } @@ -866,11 +866,12 @@ impl<'a: 'ast, 'ast, 'tcx> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast, } fn visit_foreign_item(&mut self, foreign_item: &'ast ForeignItem) { self.resolve_doc_links(&foreign_item.attrs, MaybeExported::Ok(foreign_item.id)); + let def_kind = self.r.local_def_kind(foreign_item.id); match foreign_item.kind { ForeignItemKind::TyAlias(box TyAlias { ref generics, .. }) => { self.with_generic_param_rib( &generics.params, - RibKind::Item(HasGenericParams::Yes(generics.span)), + RibKind::Item(HasGenericParams::Yes(generics.span), def_kind), LifetimeRibKind::Generics { binder: foreign_item.id, kind: LifetimeBinderKind::Item, @@ -882,7 +883,7 @@ impl<'a: 'ast, 'ast, 'tcx> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast, ForeignItemKind::Fn(box Fn { ref generics, .. }) => { self.with_generic_param_rib( &generics.params, - RibKind::Item(HasGenericParams::Yes(generics.span)), + RibKind::Item(HasGenericParams::Yes(generics.span), def_kind), LifetimeRibKind::Generics { binder: foreign_item.id, kind: LifetimeBinderKind::Function, @@ -892,7 +893,7 @@ impl<'a: 'ast, 'ast, 'tcx> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast, ); } ForeignItemKind::Static(..) => { - self.with_static_rib(|this| { + self.with_static_rib(def_kind, |this| { visit::walk_foreign_item(this, foreign_item); }); } @@ -2268,10 +2269,11 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { fn resolve_adt(&mut self, item: &'ast Item, generics: &'ast Generics) { debug!("resolve_adt"); + let kind = self.r.local_def_kind(item.id); self.with_current_self_item(item, |this| { this.with_generic_param_rib( &generics.params, - RibKind::Item(HasGenericParams::Yes(generics.span)), + RibKind::Item(HasGenericParams::Yes(generics.span), kind), LifetimeRibKind::Generics { binder: item.id, kind: LifetimeBinderKind::Item, @@ -2345,11 +2347,12 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { let name = item.ident.name; debug!("(resolving item) resolving {} ({:?})", name, item.kind); + let def_kind = self.r.local_def_kind(item.id); match item.kind { ItemKind::TyAlias(box TyAlias { ref generics, .. }) => { self.with_generic_param_rib( &generics.params, - RibKind::Item(HasGenericParams::Yes(generics.span)), + RibKind::Item(HasGenericParams::Yes(generics.span), def_kind), LifetimeRibKind::Generics { binder: item.id, kind: LifetimeBinderKind::Item, @@ -2362,7 +2365,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { ItemKind::Fn(box Fn { ref generics, .. }) => { self.with_generic_param_rib( &generics.params, - RibKind::Item(HasGenericParams::Yes(generics.span)), + RibKind::Item(HasGenericParams::Yes(generics.span), def_kind), LifetimeRibKind::Generics { binder: item.id, kind: LifetimeBinderKind::Function, @@ -2401,7 +2404,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { // Create a new rib for the trait-wide type parameters. self.with_generic_param_rib( &generics.params, - RibKind::Item(HasGenericParams::Yes(generics.span)), + RibKind::Item(HasGenericParams::Yes(generics.span), def_kind), LifetimeRibKind::Generics { binder: item.id, kind: LifetimeBinderKind::Item, @@ -2422,7 +2425,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { // Create a new rib for the trait-wide type parameters. self.with_generic_param_rib( &generics.params, - RibKind::Item(HasGenericParams::Yes(generics.span)), + RibKind::Item(HasGenericParams::Yes(generics.span), def_kind), LifetimeRibKind::Generics { binder: item.id, kind: LifetimeBinderKind::Item, @@ -2456,7 +2459,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { } ItemKind::Static(box ast::StaticItem { ref ty, ref expr, .. }) => { - self.with_static_rib(|this| { + self.with_static_rib(def_kind, |this| { this.with_lifetime_rib(LifetimeRibKind::Elided(LifetimeRes::Static), |this| { this.visit_ty(ty); }); @@ -2471,11 +2474,14 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { ItemKind::Const(box ast::ConstItem { ref generics, ref ty, ref expr, .. }) => { self.with_generic_param_rib( &generics.params, - RibKind::Item(if self.r.tcx.features().generic_const_items { - HasGenericParams::Yes(generics.span) - } else { - HasGenericParams::No - }), + RibKind::Item( + if self.r.tcx.features().generic_const_items { + HasGenericParams::Yes(generics.span) + } else { + HasGenericParams::No + }, + def_kind, + ), LifetimeRibKind::Generics { binder: item.id, kind: LifetimeBinderKind::ConstItem, @@ -2560,7 +2566,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { let mut add_bindings_for_ns = |ns| { let parent_rib = self.ribs[ns] .iter() - .rfind(|r| matches!(r.kind, RibKind::Item(_))) + .rfind(|r| matches!(r.kind, RibKind::Item(..))) .expect("associated item outside of an item"); seen_bindings.extend(parent_rib.bindings.keys().map(|ident| (*ident, ident.span))); }; @@ -2695,8 +2701,8 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { self.label_ribs.pop(); } - fn with_static_rib(&mut self, f: impl FnOnce(&mut Self)) { - let kind = RibKind::Item(HasGenericParams::No); + fn with_static_rib(&mut self, def_kind: DefKind, f: impl FnOnce(&mut Self)) { + let kind = RibKind::Item(HasGenericParams::No, def_kind); self.with_rib(ValueNS, kind, |this| this.with_rib(TypeNS, kind, f)) } @@ -2877,7 +2883,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { // If applicable, create a rib for the type parameters. self.with_generic_param_rib( &generics.params, - RibKind::Item(HasGenericParams::Yes(generics.span)), + RibKind::Item(HasGenericParams::Yes(generics.span), self.r.local_def_kind(item_id)), LifetimeRibKind::Generics { span: generics.span, binder: item_id, diff --git a/compiler/rustc_resolve/src/lib.rs b/compiler/rustc_resolve/src/lib.rs index 0adea65ee58ea..1ab350d3bd850 100644 --- a/compiler/rustc_resolve/src/lib.rs +++ b/compiler/rustc_resolve/src/lib.rs @@ -185,7 +185,7 @@ struct BindingError { #[derive(Debug)] enum ResolutionError<'a> { /// Error E0401: can't use type or const parameters from outer item. - GenericParamsFromOuterItem(Res, HasGenericParams), + GenericParamsFromOuterItem(Res, HasGenericParams, DefKind), /// Error E0403: the name is already used for a type or const parameter in this generic /// parameter list. NameAlreadyUsedInParameterList(Symbol, Span), @@ -1207,6 +1207,10 @@ impl<'tcx> Resolver<'_, 'tcx> { self.opt_local_def_id(node).unwrap_or_else(|| panic!("no entry for node id: `{node:?}`")) } + fn local_def_kind(&self, node: NodeId) -> DefKind { + self.tcx.def_kind(self.local_def_id(node)) + } + /// Adds a definition with a parent definition. fn create_def( &mut self, diff --git a/tests/ui/inner-static-type-parameter.stderr b/tests/ui/inner-static-type-parameter.stderr index ff6558e494b11..b4c435e98cebe 100644 --- a/tests/ui/inner-static-type-parameter.stderr +++ b/tests/ui/inner-static-type-parameter.stderr @@ -5,6 +5,8 @@ LL | fn foo() { | - type parameter from outer item LL | static a: Bar = Bar::What; | ^ use of generic parameter from outer item + | + = note: a `static` is a separate item from the item that contains it error[E0392]: parameter `T` is never used --> $DIR/inner-static-type-parameter.rs:3:10 diff --git a/tests/ui/resolve/generic-params-from-outer-item-in-const-item.default.stderr b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.default.stderr index 4f8538292792c..fbb9ede8aa175 100644 --- a/tests/ui/resolve/generic-params-from-outer-item-in-const-item.default.stderr +++ b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.default.stderr @@ -5,6 +5,8 @@ LL | fn outer() { // outer function | - type parameter from outer item LL | const K: u32 = T::C; | ^^^^ use of generic parameter from outer item + | + = note: a `const` is a separate item from the item that contains it error[E0401]: can't use generic parameters from outer item --> $DIR/generic-params-from-outer-item-in-const-item.rs:19:24 @@ -14,6 +16,8 @@ LL | impl Tr for T { // outer impl block LL | const C: u32 = { LL | const I: u32 = T::C; | ^^^^ use of generic parameter from outer item + | + = note: a `const` is a separate item from the item that contains it error[E0401]: can't use generic parameters from outer item --> $DIR/generic-params-from-outer-item-in-const-item.rs:27:20 @@ -22,6 +26,8 @@ LL | struct S(U32<{ // outer struct | - type parameter from outer item LL | const _: u32 = T::C; | ^^^^ use of generic parameter from outer item + | + = note: a `const` is a separate item from the item that contains it error: aborting due to 3 previous errors diff --git a/tests/ui/resolve/generic-params-from-outer-item-in-const-item.generic_const_items.stderr b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.generic_const_items.stderr index 1cb55842bc665..60aa94038c3ad 100644 --- a/tests/ui/resolve/generic-params-from-outer-item-in-const-item.generic_const_items.stderr +++ b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.generic_const_items.stderr @@ -7,6 +7,8 @@ LL | const K: u32 = T::C; | - ^^^^ use of generic parameter from outer item | | | help: try introducing a local generic parameter here: `` + | + = note: a `const` is a separate item from the item that contains it error[E0401]: can't use generic parameters from outer item --> $DIR/generic-params-from-outer-item-in-const-item.rs:19:24 @@ -18,6 +20,8 @@ LL | const I: u32 = T::C; | - ^^^^ use of generic parameter from outer item | | | help: try introducing a local generic parameter here: `` + | + = note: a `const` is a separate item from the item that contains it error[E0401]: can't use generic parameters from outer item --> $DIR/generic-params-from-outer-item-in-const-item.rs:27:20 @@ -28,6 +32,8 @@ LL | const _: u32 = T::C; | - ^^^^ use of generic parameter from outer item | | | help: try introducing a local generic parameter here: `` + | + = note: a `const` is a separate item from the item that contains it error: aborting due to 3 previous errors diff --git a/tests/ui/resolve/issue-65025-extern-static-parent-generics.stderr b/tests/ui/resolve/issue-65025-extern-static-parent-generics.stderr index 363bb55647827..ca32147d19765 100644 --- a/tests/ui/resolve/issue-65025-extern-static-parent-generics.stderr +++ b/tests/ui/resolve/issue-65025-extern-static-parent-generics.stderr @@ -6,6 +6,8 @@ LL | unsafe fn foo() { LL | extern "C" { LL | static baz: *const A; | ^ use of generic parameter from outer item + | + = note: a `static` is a separate item from the item that contains it error: aborting due to 1 previous error diff --git a/tests/ui/resolve/issue-65035-static-with-parent-generics.stderr b/tests/ui/resolve/issue-65035-static-with-parent-generics.stderr index f1fe1a6002c93..98ffb4567f164 100644 --- a/tests/ui/resolve/issue-65035-static-with-parent-generics.stderr +++ b/tests/ui/resolve/issue-65035-static-with-parent-generics.stderr @@ -6,6 +6,8 @@ LL | fn f() { LL | extern "C" { LL | static a: *const T; | ^ use of generic parameter from outer item + | + = note: a `static` is a separate item from the item that contains it error[E0401]: can't use generic parameters from outer item --> $DIR/issue-65035-static-with-parent-generics.rs:9:22 @@ -14,6 +16,8 @@ LL | fn g() { | - type parameter from outer item LL | static a: *const T = Default::default(); | ^ use of generic parameter from outer item + | + = note: a `static` is a separate item from the item that contains it error[E0401]: can't use generic parameters from outer item --> $DIR/issue-65035-static-with-parent-generics.rs:15:24 @@ -23,6 +27,8 @@ LL | fn h() { LL | extern "C" { LL | static a: [u8; N]; | ^ use of generic parameter from outer item + | + = note: a `static` is a separate item from the item that contains it error[E0401]: can't use generic parameters from outer item --> $DIR/issue-65035-static-with-parent-generics.rs:21:20 @@ -31,6 +37,8 @@ LL | fn i() { | - const parameter from outer item LL | static a: [u8; N] = [0; N]; | ^ use of generic parameter from outer item + | + = note: a `static` is a separate item from the item that contains it error[E0401]: can't use generic parameters from outer item --> $DIR/issue-65035-static-with-parent-generics.rs:21:29 @@ -39,6 +47,8 @@ LL | fn i() { | - const parameter from outer item LL | static a: [u8; N] = [0; N]; | ^ use of generic parameter from outer item + | + = note: a `static` is a separate item from the item that contains it error: aborting due to 5 previous errors From 2cfc81766c37eb0f6696d50f9207876293fa7732 Mon Sep 17 00:00:00 2001 From: clubby789 Date: Sat, 13 Jan 2024 19:24:52 +0000 Subject: [PATCH 02/25] Special case 'generic param from outer item' message for `Self` --- compiler/rustc_resolve/messages.ftl | 10 ++++++++-- compiler/rustc_resolve/src/diagnostics.rs | 2 ++ compiler/rustc_resolve/src/errors.rs | 1 + tests/ui/error-codes/E0401.stderr | 4 ++-- tests/ui/resolve/issue-12796.rs | 2 +- tests/ui/resolve/issue-12796.stderr | 4 ++-- tests/ui/resolve/use-self-in-inner-fn.rs | 4 ++-- tests/ui/resolve/use-self-in-inner-fn.stderr | 4 ++-- 8 files changed, 20 insertions(+), 11 deletions(-) diff --git a/compiler/rustc_resolve/messages.ftl b/compiler/rustc_resolve/messages.ftl index 1947107235b2c..69675b57e31a1 100644 --- a/compiler/rustc_resolve/messages.ftl +++ b/compiler/rustc_resolve/messages.ftl @@ -114,8 +114,14 @@ resolve_forward_declared_generic_param = .label = defaulted generic parameters cannot be forward declared resolve_generic_params_from_outer_item = - can't use generic parameters from outer item - .label = use of generic parameter from outer item + can't use {$is_self -> + [true] `Self` + *[false] generic parameters + } from outer item + .label = use of {$is_self -> + [true] `Self` + *[false] generic parameter + } from outer item .refer_to_type_directly = refer to the type directly here instead .suggestion = try introducing a local generic parameter here diff --git a/compiler/rustc_resolve/src/diagnostics.rs b/compiler/rustc_resolve/src/diagnostics.rs index 46da5b9d2e46d..da31382112a0b 100644 --- a/compiler/rustc_resolve/src/diagnostics.rs +++ b/compiler/rustc_resolve/src/diagnostics.rs @@ -568,12 +568,14 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { DefKind::Const => Some(errs::GenericParamsFromOuterItemStaticOrConst::Const), _ => None, }; + let is_self = matches!(outer_res, Res::SelfTyParam { .. } | Res::SelfTyAlias { .. }); let mut err = errs::GenericParamsFromOuterItem { span, label: None, refer_to_type_directly: None, sugg: None, static_or_const, + is_self, }; let sm = self.tcx.sess.source_map(); diff --git a/compiler/rustc_resolve/src/errors.rs b/compiler/rustc_resolve/src/errors.rs index bd00cab66b0aa..da89df84c8ae5 100644 --- a/compiler/rustc_resolve/src/errors.rs +++ b/compiler/rustc_resolve/src/errors.rs @@ -46,6 +46,7 @@ pub(crate) struct GenericParamsFromOuterItem { pub(crate) sugg: Option, #[subdiagnostic] pub(crate) static_or_const: Option, + pub(crate) is_self: bool, } #[derive(Subdiagnostic)] diff --git a/tests/ui/error-codes/E0401.stderr b/tests/ui/error-codes/E0401.stderr index d27fade487fe2..754867061c7f8 100644 --- a/tests/ui/error-codes/E0401.stderr +++ b/tests/ui/error-codes/E0401.stderr @@ -20,7 +20,7 @@ LL | fn baz $DIR/E0401.rs:24:25 | LL | impl Iterator for A { @@ -29,7 +29,7 @@ LL | impl Iterator for A { LL | fn helper(sel: &Self) -> u8 { | ^^^^ | | - | use of generic parameter from outer item + | use of `Self` from outer item | refer to the type directly here instead error[E0283]: type annotations needed diff --git a/tests/ui/resolve/issue-12796.rs b/tests/ui/resolve/issue-12796.rs index de3e73437f080..e5dcf9643453b 100644 --- a/tests/ui/resolve/issue-12796.rs +++ b/tests/ui/resolve/issue-12796.rs @@ -1,7 +1,7 @@ trait Trait { fn outer(&self) { fn inner(_: &Self) { - //~^ ERROR can't use generic parameters from outer item + //~^ ERROR can't use `Self` from outer item } } } diff --git a/tests/ui/resolve/issue-12796.stderr b/tests/ui/resolve/issue-12796.stderr index 6809fd50f7475..2305971303a71 100644 --- a/tests/ui/resolve/issue-12796.stderr +++ b/tests/ui/resolve/issue-12796.stderr @@ -1,10 +1,10 @@ -error[E0401]: can't use generic parameters from outer item +error[E0401]: can't use `Self` from outer item --> $DIR/issue-12796.rs:3:22 | LL | fn inner(_: &Self) { | ^^^^ | | - | use of generic parameter from outer item + | use of `Self` from outer item | can't use `Self` here error: aborting due to 1 previous error diff --git a/tests/ui/resolve/use-self-in-inner-fn.rs b/tests/ui/resolve/use-self-in-inner-fn.rs index f4dfa4c40ab24..62f9dc5664ffe 100644 --- a/tests/ui/resolve/use-self-in-inner-fn.rs +++ b/tests/ui/resolve/use-self-in-inner-fn.rs @@ -4,8 +4,8 @@ impl A { //~^ NOTE `Self` type implicitly declared here, by this `impl` fn banana(&mut self) { fn peach(this: &Self) { - //~^ ERROR can't use generic parameters from outer item - //~| NOTE use of generic parameter from outer item + //~^ ERROR can't use `Self` from outer item + //~| NOTE use of `Self` from outer item //~| NOTE refer to the type directly here instead } } diff --git a/tests/ui/resolve/use-self-in-inner-fn.stderr b/tests/ui/resolve/use-self-in-inner-fn.stderr index 165e100bf2f5c..9c388df8bc20c 100644 --- a/tests/ui/resolve/use-self-in-inner-fn.stderr +++ b/tests/ui/resolve/use-self-in-inner-fn.stderr @@ -1,4 +1,4 @@ -error[E0401]: can't use generic parameters from outer item +error[E0401]: can't use `Self` from outer item --> $DIR/use-self-in-inner-fn.rs:6:25 | LL | impl A { @@ -7,7 +7,7 @@ LL | impl A { LL | fn peach(this: &Self) { | ^^^^ | | - | use of generic parameter from outer item + | use of `Self` from outer item | refer to the type directly here instead error: aborting due to 1 previous error From c36798357d353a8df1bf430ea3261741cfc51121 Mon Sep 17 00:00:00 2001 From: yukang Date: Sun, 28 Jan 2024 11:13:02 +0800 Subject: [PATCH 03/25] Suggest name value cfg when only value is used for check-cfg --- .../rustc_lint/src/context/diagnostics.rs | 50 +++++++++++++++---- .../cfg-value-for-cfg-name-multiple.rs | 12 +++++ .../cfg-value-for-cfg-name-multiple.stderr | 21 ++++++++ tests/ui/check-cfg/cfg-value-for-cfg-name.rs | 18 +++++++ .../check-cfg/cfg-value-for-cfg-name.stderr | 22 ++++++++ 5 files changed, 113 insertions(+), 10 deletions(-) create mode 100644 tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.rs create mode 100644 tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.stderr create mode 100644 tests/ui/check-cfg/cfg-value-for-cfg-name.rs create mode 100644 tests/ui/check-cfg/cfg-value-for-cfg-name.stderr diff --git a/compiler/rustc_lint/src/context/diagnostics.rs b/compiler/rustc_lint/src/context/diagnostics.rs index 312874db3f54e..31205f2b2fd97 100644 --- a/compiler/rustc_lint/src/context/diagnostics.rs +++ b/compiler/rustc_lint/src/context/diagnostics.rs @@ -187,6 +187,23 @@ pub(super) fn builtin( BuiltinLintDiagnostics::UnexpectedCfgName((name, name_span), value) => { let possibilities: Vec = sess.parse_sess.check_config.expecteds.keys().copied().collect(); + + let mut names_possibilities: Vec<_> = if value.is_none() { + // We later sort and display all the possibilities, so the order here does not matter. + #[allow(rustc::potential_query_instability)] + sess.parse_sess + .check_config + .expecteds + .iter() + .filter_map(|(k, v)| match v { + ExpectedValues::Some(v) if v.contains(&Some(name)) => Some(k), + _ => None, + }) + .collect() + } else { + Vec::new() + }; + let is_from_cargo = std::env::var_os("CARGO").is_some(); let mut is_feature_cfg = name == sym::feature; @@ -261,17 +278,30 @@ pub(super) fn builtin( } is_feature_cfg |= best_match == sym::feature; - } else if !possibilities.is_empty() { - let mut possibilities = - possibilities.iter().map(Symbol::as_str).collect::>(); - possibilities.sort(); - let possibilities = possibilities.join("`, `"); + } else { + if !names_possibilities.is_empty() { + names_possibilities.sort(); + for cfg_name in names_possibilities.iter() { + db.span_suggestion( + name_span, + "found config with similar value", + format!("{cfg_name} = \"{name}\""), + Applicability::MaybeIncorrect, + ); + } + } + if !possibilities.is_empty() { + let mut possibilities = + possibilities.iter().map(Symbol::as_str).collect::>(); + possibilities.sort(); + let possibilities = possibilities.join("`, `"); - // The list of expected names can be long (even by default) and - // so the diagnostic produced can take a lot of space. To avoid - // cloging the user output we only want to print that diagnostic - // once. - db.help_once(format!("expected names are: `{possibilities}`")); + // The list of expected names can be long (even by default) and + // so the diagnostic produced can take a lot of space. To avoid + // cloging the user output we only want to print that diagnostic + // once. + db.help_once(format!("expected names are: `{possibilities}`")); + } } let inst = if let Some((value, _value_span)) = value { diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.rs b/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.rs new file mode 100644 index 0000000000000..edde6244ed1a9 --- /dev/null +++ b/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.rs @@ -0,0 +1,12 @@ +// #120427 +// This test checks that when a single cfg has a value for user's specified name +// +// check-pass +// compile-flags: -Z unstable-options +// compile-flags: --check-cfg=cfg(foo,values("my_value")) --check-cfg=cfg(bar,values("my_value")) + +#[cfg(my_value)] +//~^ WARNING unexpected `cfg` condition name: `my_value` +fn x() {} + +fn main() {} diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.stderr b/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.stderr new file mode 100644 index 0000000000000..b88ee71a156a2 --- /dev/null +++ b/tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.stderr @@ -0,0 +1,21 @@ +warning: unexpected `cfg` condition name: `my_value` + --> $DIR/cfg-value-for-cfg-name-multiple.rs:8:7 + | +LL | #[cfg(my_value)] + | ^^^^^^^^ + | + = help: expected names are: `bar`, `debug_assertions`, `doc`, `doctest`, `foo`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows` + = help: to expect this configuration use `--check-cfg=cfg(my_value)` + = note: see for more information about checking conditional configuration + = note: `#[warn(unexpected_cfgs)]` on by default +help: found config with similar value + | +LL | #[cfg(foo = "my_value")] + | ~~~~~~~~~~~~~~~~ +help: found config with similar value + | +LL | #[cfg(bar = "my_value")] + | ~~~~~~~~~~~~~~~~ + +warning: 1 warning emitted + diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name.rs b/tests/ui/check-cfg/cfg-value-for-cfg-name.rs new file mode 100644 index 0000000000000..7a0c345b7ca76 --- /dev/null +++ b/tests/ui/check-cfg/cfg-value-for-cfg-name.rs @@ -0,0 +1,18 @@ +// #120427 +// This test checks that when a single cfg has a value for user's specified name +// suggest to use `#[cfg(target_os = "linux")]` instead of `#[cfg(linux)]` +// +// check-pass +// compile-flags: -Z unstable-options +// compile-flags: --check-cfg=cfg() + +#[cfg(linux)] +//~^ WARNING unexpected `cfg` condition name: `linux` +fn x() {} + +// will not suggest if the cfg has a value +#[cfg(linux = "os-name")] +//~^ WARNING unexpected `cfg` condition name: `linux` +fn y() {} + +fn main() {} diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name.stderr b/tests/ui/check-cfg/cfg-value-for-cfg-name.stderr new file mode 100644 index 0000000000000..c044755142419 --- /dev/null +++ b/tests/ui/check-cfg/cfg-value-for-cfg-name.stderr @@ -0,0 +1,22 @@ +warning: unexpected `cfg` condition name: `linux` + --> $DIR/cfg-value-for-cfg-name.rs:9:7 + | +LL | #[cfg(linux)] + | ^^^^^ help: found config with similar value: `target_os = "linux"` + | + = help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows` + = help: to expect this configuration use `--check-cfg=cfg(linux)` + = note: see for more information about checking conditional configuration + = note: `#[warn(unexpected_cfgs)]` on by default + +warning: unexpected `cfg` condition name: `linux` + --> $DIR/cfg-value-for-cfg-name.rs:14:7 + | +LL | #[cfg(linux = "os-name")] + | ^^^^^^^^^^^^^^^^^ + | + = help: to expect this configuration use `--check-cfg=cfg(linux, values("os-name"))` + = note: see for more information about checking conditional configuration + +warning: 2 warnings emitted + From 0213c87e12460e8f7101f96cc5daf4c3d20d6b9f Mon Sep 17 00:00:00 2001 From: Yukang Date: Tue, 30 Jan 2024 10:18:52 +0800 Subject: [PATCH 04/25] limit the names_possiblilities to less than 3 Co-authored-by: Urgau <3616612+Urgau@users.noreply.github.com> --- compiler/rustc_lint/src/context/diagnostics.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/compiler/rustc_lint/src/context/diagnostics.rs b/compiler/rustc_lint/src/context/diagnostics.rs index 31205f2b2fd97..07efc98f1fbe5 100644 --- a/compiler/rustc_lint/src/context/diagnostics.rs +++ b/compiler/rustc_lint/src/context/diagnostics.rs @@ -279,7 +279,7 @@ pub(super) fn builtin( is_feature_cfg |= best_match == sym::feature; } else { - if !names_possibilities.is_empty() { + if !names_possibilities.is_empty() && names_possibilities.len() <= 3 { names_possibilities.sort(); for cfg_name in names_possibilities.iter() { db.span_suggestion( From ca243e750118ae679c7c3413f21e5e772bf694da Mon Sep 17 00:00:00 2001 From: yukang Date: Tue, 30 Jan 2024 16:54:40 +0800 Subject: [PATCH 05/25] add testcase for more than 3 cfg names --- .../check-cfg/cfg-value-for-cfg-name-duplicate.rs | 12 ++++++++++++ .../cfg-value-for-cfg-name-duplicate.stderr | 13 +++++++++++++ 2 files changed, 25 insertions(+) create mode 100644 tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.rs create mode 100644 tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.stderr diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.rs b/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.rs new file mode 100644 index 0000000000000..a6e68e1b7101c --- /dev/null +++ b/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.rs @@ -0,0 +1,12 @@ +// #120427 +// This test checks we won't suggest more than 3 span suggestions for cfg names +// +// check-pass +// compile-flags: -Z unstable-options +// compile-flags: --check-cfg=cfg(foo,values("value")) --check-cfg=cfg(bar,values("value")) --check-cfg=cfg(bee,values("value")) --check-cfg=cfg(cow,values("value")) + +#[cfg(value)] +//~^ WARNING unexpected `cfg` condition name: `value` +fn x() {} + +fn main() {} diff --git a/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.stderr b/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.stderr new file mode 100644 index 0000000000000..82d471d715b83 --- /dev/null +++ b/tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.stderr @@ -0,0 +1,13 @@ +warning: unexpected `cfg` condition name: `value` + --> $DIR/cfg-value-for-cfg-name-duplicate.rs:8:7 + | +LL | #[cfg(value)] + | ^^^^^ + | + = help: expected names are: `bar`, `bee`, `cow`, `debug_assertions`, `doc`, `doctest`, `foo`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows` + = help: to expect this configuration use `--check-cfg=cfg(value)` + = note: see for more information about checking conditional configuration + = note: `#[warn(unexpected_cfgs)]` on by default + +warning: 1 warning emitted + From d34b0fa495bfbc3bd7de14a691822706074fcbb6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Esteban=20K=C3=BCber?= Date: Fri, 26 Jan 2024 18:57:58 +0000 Subject: [PATCH 06/25] Add test for method on unbounded type parameter receiver --- .../traits/method-on-unbounded-type-param.rs | 15 ++++ .../method-on-unbounded-type-param.stderr | 83 +++++++++++++++++++ 2 files changed, 98 insertions(+) create mode 100644 tests/ui/traits/method-on-unbounded-type-param.rs create mode 100644 tests/ui/traits/method-on-unbounded-type-param.stderr diff --git a/tests/ui/traits/method-on-unbounded-type-param.rs b/tests/ui/traits/method-on-unbounded-type-param.rs new file mode 100644 index 0000000000000..8505eb41e98bb --- /dev/null +++ b/tests/ui/traits/method-on-unbounded-type-param.rs @@ -0,0 +1,15 @@ +fn f(a: T, b: T) -> std::cmp::Ordering { + a.cmp(&b) //~ ERROR E0599 +} +fn g(a: T, b: T) -> std::cmp::Ordering { + (&a).cmp(&b) //~ ERROR E0599 +} +fn h(a: &T, b: T) -> std::cmp::Ordering { + a.cmp(&b) //~ ERROR E0599 +} +trait T {} +impl T for X {} +fn main() { + let x: Box = Box::new(0); + x.cmp(&x); //~ ERROR E0599 +} diff --git a/tests/ui/traits/method-on-unbounded-type-param.stderr b/tests/ui/traits/method-on-unbounded-type-param.stderr new file mode 100644 index 0000000000000..0b650995de5c5 --- /dev/null +++ b/tests/ui/traits/method-on-unbounded-type-param.stderr @@ -0,0 +1,83 @@ +error[E0599]: `T` is not an iterator + --> $DIR/method-on-unbounded-type-param.rs:2:7 + | +LL | fn f(a: T, b: T) -> std::cmp::Ordering { + | - method `cmp` not found for this type parameter +LL | a.cmp(&b) + | ^^^ `T` is not an iterator + | + = note: the following trait bounds were not satisfied: + `T: Iterator` + which is required by `&mut T: Iterator` +help: consider restricting the type parameter to satisfy the trait bound + | +LL | fn f(a: T, b: T) -> std::cmp::Ordering where T: Iterator { + | +++++++++++++++++ + +error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied + --> $DIR/method-on-unbounded-type-param.rs:5:10 + | +LL | (&a).cmp(&b) + | ^^^ method cannot be called on `&T` due to unsatisfied trait bounds + | + = note: the following trait bounds were not satisfied: + `T: Ord` + which is required by `&T: Ord` + `&T: Iterator` + which is required by `&mut &T: Iterator` + `T: Iterator` + which is required by `&mut T: Iterator` +help: consider restricting the type parameters to satisfy the trait bounds + | +LL | fn g(a: T, b: T) -> std::cmp::Ordering where T: Iterator, T: Ord { + | +++++++++++++++++++++++++ + +error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied + --> $DIR/method-on-unbounded-type-param.rs:8:7 + | +LL | a.cmp(&b) + | ^^^ method cannot be called on `&T` due to unsatisfied trait bounds + | + = note: the following trait bounds were not satisfied: + `T: Ord` + which is required by `&T: Ord` + `&T: Iterator` + which is required by `&mut &T: Iterator` + `T: Iterator` + which is required by `&mut T: Iterator` +help: consider restricting the type parameters to satisfy the trait bounds + | +LL | fn h(a: &T, b: T) -> std::cmp::Ordering where T: Iterator, T: Ord { + | +++++++++++++++++++++++++ + +error[E0599]: the method `cmp` exists for struct `Box`, but its trait bounds were not satisfied + --> $DIR/method-on-unbounded-type-param.rs:14:7 + | +LL | trait T {} + | ------- + | | + | doesn't satisfy `dyn T: Iterator` + | doesn't satisfy `dyn T: Ord` +... +LL | x.cmp(&x); + | ^^^ method cannot be called on `Box` due to unsatisfied trait bounds + --> $SRC_DIR/alloc/src/boxed.rs:LL:COL + ::: $SRC_DIR/alloc/src/boxed.rs:LL:COL + | + = note: doesn't satisfy `Box: Iterator` + | + = note: doesn't satisfy `Box: Ord` + | + = note: the following trait bounds were not satisfied: + `dyn T: Iterator` + which is required by `Box: Iterator` + `dyn T: Ord` + which is required by `Box: Ord` + `Box: Iterator` + which is required by `&mut Box: Iterator` + `dyn T: Iterator` + which is required by `&mut dyn T: Iterator` + +error: aborting due to 4 previous errors + +For more information about this error, try `rustc --explain E0599`. From 20b1c2aafca8d8861d193d3476ffc8d09c0479e2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Esteban=20K=C3=BCber?= Date: Fri, 26 Jan 2024 19:02:05 +0000 Subject: [PATCH 07/25] Account for unbounded type param receiver in suggestions When encountering ```rust fn f(a: T, b: T) -> std::cmp::Ordering { a.cmp(&b) //~ ERROR E0599 } ``` output ``` error[E0599]: no method named `cmp` found for type parameter `T` in the current scope --> $DIR/method-on-unbounded-type-param.rs:2:7 | LL | fn f(a: T, b: T) -> std::cmp::Ordering { | - method `cmp` not found for this type parameter LL | a.cmp(&b) | ^^^ method cannot be called on `T` due to unsatisfied trait bounds | = help: items from traits can only be used if the type parameter is bounded by the trait help: the following traits define an item `cmp`, perhaps you need to restrict type parameter `T` with one of them: | LL | fn f(a: T, b: T) -> std::cmp::Ordering { | +++++ LL | fn f(a: T, b: T) -> std::cmp::Ordering { | ++++++++++ ``` Fix #120186. --- .../rustc_hir_typeck/src/method/suggest.rs | 41 ++++++++++++------- .../method-on-unbounded-type-param.stderr | 16 ++++---- 2 files changed, 35 insertions(+), 22 deletions(-) diff --git a/compiler/rustc_hir_typeck/src/method/suggest.rs b/compiler/rustc_hir_typeck/src/method/suggest.rs index 6c9501e93fa11..de42f011cf42a 100644 --- a/compiler/rustc_hir_typeck/src/method/suggest.rs +++ b/compiler/rustc_hir_typeck/src/method/suggest.rs @@ -554,6 +554,17 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { "`count` is defined on `{iterator_trait}`, which `{rcvr_ty}` does not implement" )); } + } else if !unsatisfied_predicates.is_empty() && matches!(rcvr_ty.kind(), ty::Param(_)) { + // We special case the situation where we are looking for `_` in + // `::method` because otherwise the machinery will look for blanket + // implementations that have unsatisfied trait bounds to suggest, leading us to claim + // things like "we're looking for a trait with method `cmp`, both `Iterator` and `Ord` + // have one, in order to implement `Ord` you need to restrict `TypeParam: FnPtr` so + // that `impl Ord for T` can apply", which is not what we want. We have a type + // parameter, we want to directly say "`Ord::cmp` and `Iterator::cmp` exist, restrict + // `TypeParam: Ord` or `TypeParam: Iterator`"". That is done further down when calling + // `self.suggest_traits_to_import`, so we ignore the `unsatisfied_predicates` + // suggestions. } else if !unsatisfied_predicates.is_empty() { let mut type_params = FxIndexMap::default(); @@ -1325,7 +1336,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { } } self.note_derefed_ty_has_method(&mut err, source, rcvr_ty, item_name, expected); - return Some(err); + Some(err) } fn note_candidates_on_method_error( @@ -2918,19 +2929,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // this isn't perfect (that is, there are cases when // implementing a trait would be legal but is rejected // here). - unsatisfied_predicates.iter().all(|(p, _, _)| { - match p.kind().skip_binder() { - // Hide traits if they are present in predicates as they can be fixed without - // having to implement them. - ty::PredicateKind::Clause(ty::ClauseKind::Trait(t)) => { - t.def_id() == info.def_id - } - ty::PredicateKind::Clause(ty::ClauseKind::Projection(p)) => { - p.projection_ty.def_id == info.def_id - } - _ => false, - } - }) && (type_is_local || info.def_id.is_local()) + (type_is_local || info.def_id.is_local()) && !self.tcx.trait_is_auto(info.def_id) && self .associated_value(info.def_id, item_name) @@ -2978,6 +2977,20 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { item.visibility(self.tcx).is_public() || info.def_id.is_local() }) .is_some() + && (matches!(rcvr_ty.kind(), ty::Param(_)) + || unsatisfied_predicates.iter().all(|(p, _, _)| { + match p.kind().skip_binder() { + // Hide traits if they are present in predicates as they can be fixed without + // having to implement them. + ty::PredicateKind::Clause(ty::ClauseKind::Trait(t)) => { + t.def_id() == info.def_id + } + ty::PredicateKind::Clause(ty::ClauseKind::Projection(p)) => { + p.projection_ty.def_id == info.def_id + } + _ => false, + } + })) }) .collect::>(); for span in &arbitrary_rcvr { diff --git a/tests/ui/traits/method-on-unbounded-type-param.stderr b/tests/ui/traits/method-on-unbounded-type-param.stderr index 0b650995de5c5..f12b4d6cabdaf 100644 --- a/tests/ui/traits/method-on-unbounded-type-param.stderr +++ b/tests/ui/traits/method-on-unbounded-type-param.stderr @@ -1,18 +1,18 @@ -error[E0599]: `T` is not an iterator +error[E0599]: no method named `cmp` found for type parameter `T` in the current scope --> $DIR/method-on-unbounded-type-param.rs:2:7 | LL | fn f(a: T, b: T) -> std::cmp::Ordering { | - method `cmp` not found for this type parameter LL | a.cmp(&b) - | ^^^ `T` is not an iterator + | ^^^ method cannot be called on `T` due to unsatisfied trait bounds | - = note: the following trait bounds were not satisfied: - `T: Iterator` - which is required by `&mut T: Iterator` -help: consider restricting the type parameter to satisfy the trait bound + = help: items from traits can only be used if the type parameter is bounded by the trait +help: the following traits define an item `cmp`, perhaps you need to restrict type parameter `T` with one of them: | -LL | fn f(a: T, b: T) -> std::cmp::Ordering where T: Iterator { - | +++++++++++++++++ +LL | fn f(a: T, b: T) -> std::cmp::Ordering { + | +++++ +LL | fn f(a: T, b: T) -> std::cmp::Ordering { + | ++++++++++ error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:5:10 From 9ccc77036a144cc0d172c28e48c330d544ae5471 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Esteban=20K=C3=BCber?= Date: Tue, 30 Jan 2024 19:13:11 +0000 Subject: [PATCH 08/25] fix rebase --- .../method-on-unbounded-type-param.stderr | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) diff --git a/tests/ui/traits/method-on-unbounded-type-param.stderr b/tests/ui/traits/method-on-unbounded-type-param.stderr index f12b4d6cabdaf..245c25bbc6f67 100644 --- a/tests/ui/traits/method-on-unbounded-type-param.stderr +++ b/tests/ui/traits/method-on-unbounded-type-param.stderr @@ -53,20 +53,11 @@ LL | fn h(a: &T, b: T) -> std::cmp::Ordering where T: Iterator, T: Ord { error[E0599]: the method `cmp` exists for struct `Box`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:14:7 | -LL | trait T {} - | ------- - | | - | doesn't satisfy `dyn T: Iterator` - | doesn't satisfy `dyn T: Ord` +LL | trait T {} + | ------- doesn't satisfy `dyn T: Iterator` or `dyn T: Ord` ... -LL | x.cmp(&x); - | ^^^ method cannot be called on `Box` due to unsatisfied trait bounds - --> $SRC_DIR/alloc/src/boxed.rs:LL:COL - ::: $SRC_DIR/alloc/src/boxed.rs:LL:COL - | - = note: doesn't satisfy `Box: Iterator` - | - = note: doesn't satisfy `Box: Ord` +LL | x.cmp(&x); + | ^^^ method cannot be called on `Box` due to unsatisfied trait bounds | = note: the following trait bounds were not satisfied: `dyn T: Iterator` From 5c414094ac8d41038819dd982403f4e3de05d93c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Esteban=20K=C3=BCber?= Date: Tue, 30 Jan 2024 18:10:12 +0000 Subject: [PATCH 09/25] Account for non-overlapping unmet trait bounds in suggestion When a method not found on a type parameter could have been provided by any of multiple traits, suggest each trait individually, instead of a single suggestion to restrict the type parameter with *all* of them. Before: ``` error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:5:10 | LL | (&a).cmp(&b) | ^^^ method cannot be called on `&T` due to unsatisfied trait bounds | = note: the following trait bounds were not satisfied: `T: Ord` which is required by `&T: Ord` `&T: Iterator` which is required by `&mut &T: Iterator` `T: Iterator` which is required by `&mut T: Iterator` help: consider restricting the type parameters to satisfy the trait bounds | LL | fn g(a: T, b: T) -> std::cmp::Ordering where T: Iterator, T: Ord { | +++++++++++++++++++++++++ ``` After: ``` error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:5:10 | LL | (&a).cmp(&b) | ^^^ method cannot be called on `&T` due to unsatisfied trait bounds | = note: the following trait bounds were not satisfied: `T: Ord` which is required by `&T: Ord` `&T: Iterator` which is required by `&mut &T: Iterator` `T: Iterator` which is required by `&mut T: Iterator` = help: items from traits can only be used if the type parameter is bounded by the trait help: the following traits define an item `cmp`, perhaps you need to restrict type parameter `T` with one of them: | LL | fn g(a: T, b: T) -> std::cmp::Ordering { | +++++ LL | fn g(a: T, b: T) -> std::cmp::Ordering { | ++++++++++ ``` Fix #108428. --- .../rustc_hir_typeck/src/method/suggest.rs | 58 +++++++------------ .../box/unit/unique-object-noncopyable.stderr | 3 + tests/ui/box/unit/unique-pinned-nocopy.stderr | 3 - .../derives/derive-assoc-type-not-impl.stderr | 3 - ...method-unsatisfied-assoc-type-predicate.rs | 2 +- ...od-unsatisfied-assoc-type-predicate.stderr | 6 ++ .../trait-bounds/issue-30786.stderr | 12 ++++ tests/ui/methods/method-call-err-msg.stderr | 5 +- .../method-on-unbounded-type-param.stderr | 22 +++++-- 9 files changed, 62 insertions(+), 52 deletions(-) diff --git a/compiler/rustc_hir_typeck/src/method/suggest.rs b/compiler/rustc_hir_typeck/src/method/suggest.rs index de42f011cf42a..f7aa5209e94a7 100644 --- a/compiler/rustc_hir_typeck/src/method/suggest.rs +++ b/compiler/rustc_hir_typeck/src/method/suggest.rs @@ -540,6 +540,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let mut bound_spans: SortedMap> = Default::default(); let mut restrict_type_params = false; + let mut suggested_derive = false; let mut unsatisfied_bounds = false; if item_name.name == sym::count && self.is_slice_ty(rcvr_ty, span) { let msg = "consider using `len` instead"; @@ -927,20 +928,22 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { .enumerate() .collect::>(); - for ((span, add_where_or_comma), obligations) in type_params.into_iter() { - restrict_type_params = true; - // #74886: Sort here so that the output is always the same. - let obligations = obligations.into_sorted_stable_ord(); - err.span_suggestion_verbose( - span, - format!( - "consider restricting the type parameter{s} to satisfy the \ - trait bound{s}", - s = pluralize!(obligations.len()) - ), - format!("{} {}", add_where_or_comma, obligations.join(", ")), - Applicability::MaybeIncorrect, - ); + if !matches!(rcvr_ty.peel_refs().kind(), ty::Param(_)) { + for ((span, add_where_or_comma), obligations) in type_params.into_iter() { + restrict_type_params = true; + // #74886: Sort here so that the output is always the same. + let obligations = obligations.into_sorted_stable_ord(); + err.span_suggestion_verbose( + span, + format!( + "consider restricting the type parameter{s} to satisfy the trait \ + bound{s}", + s = pluralize!(obligations.len()) + ), + format!("{} {}", add_where_or_comma, obligations.join(", ")), + Applicability::MaybeIncorrect, + ); + } } bound_list.sort_by(|(_, a), (_, b)| a.cmp(b)); // Sort alphabetically. @@ -988,7 +991,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { "the following trait bounds were not satisfied:\n{bound_list}" )); } - self.suggest_derive(&mut err, unsatisfied_predicates); + suggested_derive = self.suggest_derive(&mut err, unsatisfied_predicates); unsatisfied_bounds = true; } @@ -1211,7 +1214,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { ); } - if rcvr_ty.is_numeric() && rcvr_ty.is_fresh() || restrict_type_params { + if rcvr_ty.is_numeric() && rcvr_ty.is_fresh() || restrict_type_params || suggested_derive { } else { self.suggest_traits_to_import( &mut err, @@ -1221,7 +1224,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { args.map(|args| args.len() + 1), source, no_match_data.out_of_scope_traits.clone(), - unsatisfied_predicates, static_candidates, unsatisfied_bounds, expected.only_has_type(self), @@ -2481,7 +2483,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { Option>, Option>, )], - ) { + ) -> bool { let mut derives = self.note_predicate_source_and_get_derives(err, unsatisfied_predicates); derives.sort(); derives.dedup(); @@ -2506,6 +2508,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { Applicability::MaybeIncorrect, ); } + !derives_grouped.is_empty() } fn note_derefed_ty_has_method( @@ -2708,11 +2711,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { inputs_len: Option, source: SelfSource<'tcx>, valid_out_of_scope_traits: Vec, - unsatisfied_predicates: &[( - ty::Predicate<'tcx>, - Option>, - Option>, - )], static_candidates: &[CandidateSource], unsatisfied_bounds: bool, return_type: Option>, @@ -2977,20 +2975,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { item.visibility(self.tcx).is_public() || info.def_id.is_local() }) .is_some() - && (matches!(rcvr_ty.kind(), ty::Param(_)) - || unsatisfied_predicates.iter().all(|(p, _, _)| { - match p.kind().skip_binder() { - // Hide traits if they are present in predicates as they can be fixed without - // having to implement them. - ty::PredicateKind::Clause(ty::ClauseKind::Trait(t)) => { - t.def_id() == info.def_id - } - ty::PredicateKind::Clause(ty::ClauseKind::Projection(p)) => { - p.projection_ty.def_id == info.def_id - } - _ => false, - } - })) }) .collect::>(); for span in &arbitrary_rcvr { diff --git a/tests/ui/box/unit/unique-object-noncopyable.stderr b/tests/ui/box/unit/unique-object-noncopyable.stderr index 49547872d1a7b..8ea6edb48a7fc 100644 --- a/tests/ui/box/unit/unique-object-noncopyable.stderr +++ b/tests/ui/box/unit/unique-object-noncopyable.stderr @@ -12,6 +12,9 @@ LL | let _z = y.clone(); which is required by `Box: Clone` `dyn Foo: Clone` which is required by `Box: Clone` + = help: items from traits can only be used if the trait is implemented and in scope + = note: the following trait defines an item `clone`, perhaps you need to implement it: + candidate #1: `Clone` error: aborting due to 1 previous error diff --git a/tests/ui/box/unit/unique-pinned-nocopy.stderr b/tests/ui/box/unit/unique-pinned-nocopy.stderr index d2bf72249c451..69428604b197f 100644 --- a/tests/ui/box/unit/unique-pinned-nocopy.stderr +++ b/tests/ui/box/unit/unique-pinned-nocopy.stderr @@ -10,9 +10,6 @@ LL | let _j = i.clone(); = note: the following trait bounds were not satisfied: `R: Clone` which is required by `Box: Clone` - = help: items from traits can only be used if the trait is implemented and in scope - = note: the following trait defines an item `clone`, perhaps you need to implement it: - candidate #1: `Clone` help: consider annotating `R` with `#[derive(Clone)]` | LL + #[derive(Clone)] diff --git a/tests/ui/derives/derive-assoc-type-not-impl.stderr b/tests/ui/derives/derive-assoc-type-not-impl.stderr index 61268ffc7f852..13ba80243a5eb 100644 --- a/tests/ui/derives/derive-assoc-type-not-impl.stderr +++ b/tests/ui/derives/derive-assoc-type-not-impl.stderr @@ -15,9 +15,6 @@ note: trait bound `NotClone: Clone` was not satisfied | LL | #[derive(Clone)] | ^^^^^ unsatisfied trait bound introduced in this `derive` macro - = help: items from traits can only be used if the trait is implemented and in scope - = note: the following trait defines an item `clone`, perhaps you need to implement it: - candidate #1: `Clone` help: consider annotating `NotClone` with `#[derive(Clone)]` | LL + #[derive(Clone)] diff --git a/tests/ui/generic-associated-types/method-unsatisfied-assoc-type-predicate.rs b/tests/ui/generic-associated-types/method-unsatisfied-assoc-type-predicate.rs index add4d58f86a0d..92ce4a0970f36 100644 --- a/tests/ui/generic-associated-types/method-unsatisfied-assoc-type-predicate.rs +++ b/tests/ui/generic-associated-types/method-unsatisfied-assoc-type-predicate.rs @@ -5,7 +5,7 @@ trait X { type Y; } -trait M { +trait M { //~ NOTE fn f(&self) {} } diff --git a/tests/ui/generic-associated-types/method-unsatisfied-assoc-type-predicate.stderr b/tests/ui/generic-associated-types/method-unsatisfied-assoc-type-predicate.stderr index 1dd463f996ce6..61512dd46582d 100644 --- a/tests/ui/generic-associated-types/method-unsatisfied-assoc-type-predicate.stderr +++ b/tests/ui/generic-associated-types/method-unsatisfied-assoc-type-predicate.stderr @@ -14,6 +14,12 @@ LL | impl = i32>> M for T {} | ^^^^^^^^^^^^ - - | | | unsatisfied trait bound introduced here + = help: items from traits can only be used if the trait is implemented and in scope +note: `M` defines an item `f`, perhaps you need to implement it + --> $DIR/method-unsatisfied-assoc-type-predicate.rs:8:1 + | +LL | trait M { + | ^^^^^^^ error: aborting due to 1 previous error diff --git a/tests/ui/higher-ranked/trait-bounds/issue-30786.stderr b/tests/ui/higher-ranked/trait-bounds/issue-30786.stderr index 73870703cfbac..699a4ecc42bb9 100644 --- a/tests/ui/higher-ranked/trait-bounds/issue-30786.stderr +++ b/tests/ui/higher-ranked/trait-bounds/issue-30786.stderr @@ -15,6 +15,12 @@ note: the following trait bounds were not satisfied: | LL | impl StreamExt for T where for<'a> &'a mut T: Stream {} | --------- - ^^^^^^ unsatisfied trait bound introduced here + = help: items from traits can only be used if the trait is implemented and in scope +note: `StreamExt` defines an item `filterx`, perhaps you need to implement it + --> $DIR/issue-30786.rs:66:1 + | +LL | pub trait StreamExt + | ^^^^^^^^^^^^^^^^^^^ error[E0599]: the method `countx` exists for struct `Filter &u64 {identity::}>, {closure@issue-30786.rs:131:30}>`, but its trait bounds were not satisfied --> $DIR/issue-30786.rs:132:24 @@ -33,6 +39,12 @@ note: the following trait bounds were not satisfied: | LL | impl StreamExt for T where for<'a> &'a mut T: Stream {} | --------- - ^^^^^^ unsatisfied trait bound introduced here + = help: items from traits can only be used if the trait is implemented and in scope +note: `StreamExt` defines an item `countx`, perhaps you need to implement it + --> $DIR/issue-30786.rs:66:1 + | +LL | pub trait StreamExt + | ^^^^^^^^^^^^^^^^^^^ error: aborting due to 2 previous errors diff --git a/tests/ui/methods/method-call-err-msg.stderr b/tests/ui/methods/method-call-err-msg.stderr index f431085745405..6df49e432a13a 100644 --- a/tests/ui/methods/method-call-err-msg.stderr +++ b/tests/ui/methods/method-call-err-msg.stderr @@ -63,8 +63,9 @@ LL | | .take() note: the trait `Iterator` must be implemented --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL = help: items from traits can only be used if the trait is implemented and in scope - = note: the following trait defines an item `take`, perhaps you need to implement it: - candidate #1: `Iterator` + = note: the following traits define an item `take`, perhaps you need to implement one of them: + candidate #1: `std::io::Read` + candidate #2: `Iterator` error[E0061]: this method takes 3 arguments but 0 arguments were supplied --> $DIR/method-call-err-msg.rs:21:7 diff --git a/tests/ui/traits/method-on-unbounded-type-param.stderr b/tests/ui/traits/method-on-unbounded-type-param.stderr index 245c25bbc6f67..0d8bd8ee964e7 100644 --- a/tests/ui/traits/method-on-unbounded-type-param.stderr +++ b/tests/ui/traits/method-on-unbounded-type-param.stderr @@ -27,10 +27,13 @@ LL | (&a).cmp(&b) which is required by `&mut &T: Iterator` `T: Iterator` which is required by `&mut T: Iterator` -help: consider restricting the type parameters to satisfy the trait bounds + = help: items from traits can only be used if the type parameter is bounded by the trait +help: the following traits define an item `cmp`, perhaps you need to restrict type parameter `T` with one of them: | -LL | fn g(a: T, b: T) -> std::cmp::Ordering where T: Iterator, T: Ord { - | +++++++++++++++++++++++++ +LL | fn g(a: T, b: T) -> std::cmp::Ordering { + | +++++ +LL | fn g(a: T, b: T) -> std::cmp::Ordering { + | ++++++++++ error[E0599]: the method `cmp` exists for reference `&T`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:8:7 @@ -45,10 +48,13 @@ LL | a.cmp(&b) which is required by `&mut &T: Iterator` `T: Iterator` which is required by `&mut T: Iterator` -help: consider restricting the type parameters to satisfy the trait bounds + = help: items from traits can only be used if the type parameter is bounded by the trait +help: the following traits define an item `cmp`, perhaps you need to restrict type parameter `T` with one of them: | -LL | fn h(a: &T, b: T) -> std::cmp::Ordering where T: Iterator, T: Ord { - | +++++++++++++++++++++++++ +LL | fn h(a: &T, b: T) -> std::cmp::Ordering { + | +++++ +LL | fn h(a: &T, b: T) -> std::cmp::Ordering { + | ++++++++++ error[E0599]: the method `cmp` exists for struct `Box`, but its trait bounds were not satisfied --> $DIR/method-on-unbounded-type-param.rs:14:7 @@ -68,6 +74,10 @@ LL | x.cmp(&x); which is required by `&mut Box: Iterator` `dyn T: Iterator` which is required by `&mut dyn T: Iterator` + = help: items from traits can only be used if the trait is implemented and in scope + = note: the following traits define an item `cmp`, perhaps you need to implement one of them: + candidate #1: `Ord` + candidate #2: `Iterator` error: aborting due to 4 previous errors From 73313158988c20b57a341502b4099629b6867755 Mon Sep 17 00:00:00 2001 From: clubby789 Date: Tue, 30 Jan 2024 20:55:56 +0000 Subject: [PATCH 10/25] Remove `ffi_returns_twice` feature --- compiler/rustc_codegen_gcc/src/attributes.rs | 3 --- compiler/rustc_codegen_llvm/src/attributes.rs | 3 --- compiler/rustc_codegen_llvm/src/llvm/ffi.rs | 1 - .../rustc_codegen_ssa/src/codegen_attrs.rs | 3 --- .../src/error_codes/E0724.md | 7 ++++-- compiler/rustc_feature/src/builtin_attrs.rs | 3 --- compiler/rustc_feature/src/removed.rs | 3 +++ compiler/rustc_feature/src/unstable.rs | 2 -- .../rustc_llvm/llvm-wrapper/LLVMWrapper.h | 1 - .../rustc_llvm/llvm-wrapper/RustWrapper.cpp | 2 -- .../src/middle/codegen_fn_attrs.rs | 23 ++++++++----------- compiler/rustc_passes/messages.ftl | 3 --- compiler/rustc_passes/src/check_attr.rs | 10 -------- compiler/rustc_passes/src/errors.rs | 7 ------ src/tools/tidy/src/ui_tests.rs | 2 +- tests/codegen/cffi/ffi-returns-twice.rs | 11 --------- .../feature-gate-ffi_returns_twice.rs | 6 ----- .../feature-gate-ffi_returns_twice.stderr | 13 ----------- tests/ui/ffi_returns_twice.rs | 15 ------------ tests/ui/ffi_returns_twice.stderr | 21 ----------------- 20 files changed, 19 insertions(+), 120 deletions(-) delete mode 100644 tests/codegen/cffi/ffi-returns-twice.rs delete mode 100644 tests/ui/feature-gates/feature-gate-ffi_returns_twice.rs delete mode 100644 tests/ui/feature-gates/feature-gate-ffi_returns_twice.stderr delete mode 100644 tests/ui/ffi_returns_twice.rs delete mode 100644 tests/ui/ffi_returns_twice.stderr diff --git a/compiler/rustc_codegen_gcc/src/attributes.rs b/compiler/rustc_codegen_gcc/src/attributes.rs index 9f361d3688695..142f86b003ddb 100644 --- a/compiler/rustc_codegen_gcc/src/attributes.rs +++ b/compiler/rustc_codegen_gcc/src/attributes.rs @@ -62,9 +62,6 @@ pub fn from_fn_attrs<'gcc, 'tcx>( if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::COLD) { func.add_attribute(FnAttribute::Cold); } - if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::FFI_RETURNS_TWICE) { - func.add_attribute(FnAttribute::ReturnsTwice); - } if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::FFI_PURE) { func.add_attribute(FnAttribute::Pure); } diff --git a/compiler/rustc_codegen_llvm/src/attributes.rs b/compiler/rustc_codegen_llvm/src/attributes.rs index 0a7ea5994312e..07c83f1aa089a 100644 --- a/compiler/rustc_codegen_llvm/src/attributes.rs +++ b/compiler/rustc_codegen_llvm/src/attributes.rs @@ -356,9 +356,6 @@ pub fn from_fn_attrs<'ll, 'tcx>( if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::COLD) { to_add.push(AttributeKind::Cold.create_attr(cx.llcx)); } - if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::FFI_RETURNS_TWICE) { - to_add.push(AttributeKind::ReturnsTwice.create_attr(cx.llcx)); - } if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::FFI_PURE) { to_add.push(MemoryEffects::ReadOnly.create_attr(cx.llcx)); } diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs index ee73c6b4756f0..5c06c62b11a3c 100644 --- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs +++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs @@ -185,7 +185,6 @@ pub enum AttributeKind { SanitizeMemory = 22, NonLazyBind = 23, OptimizeNone = 24, - ReturnsTwice = 25, ReadNone = 26, SanitizeHWAddress = 28, WillReturn = 29, diff --git a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs index 47b1b0801193a..b387d0b2258b0 100644 --- a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs +++ b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs @@ -103,9 +103,6 @@ fn codegen_fn_attrs(tcx: TyCtxt<'_>, did: LocalDefId) -> CodegenFnAttrs { match name { sym::cold => codegen_fn_attrs.flags |= CodegenFnAttrFlags::COLD, sym::rustc_allocator => codegen_fn_attrs.flags |= CodegenFnAttrFlags::ALLOCATOR, - sym::ffi_returns_twice => { - codegen_fn_attrs.flags |= CodegenFnAttrFlags::FFI_RETURNS_TWICE - } sym::ffi_pure => codegen_fn_attrs.flags |= CodegenFnAttrFlags::FFI_PURE, sym::ffi_const => codegen_fn_attrs.flags |= CodegenFnAttrFlags::FFI_CONST, sym::rustc_nounwind => codegen_fn_attrs.flags |= CodegenFnAttrFlags::NEVER_UNWIND, diff --git a/compiler/rustc_error_codes/src/error_codes/E0724.md b/compiler/rustc_error_codes/src/error_codes/E0724.md index 70578acbe0d5f..bcefd0a74798b 100644 --- a/compiler/rustc_error_codes/src/error_codes/E0724.md +++ b/compiler/rustc_error_codes/src/error_codes/E0724.md @@ -1,9 +1,12 @@ +#### Note: this error code is no longer emitted by the compiler. + + `#[ffi_returns_twice]` was used on something other than a foreign function declaration. Erroneous code example: -```compile_fail,E0724 +```compile_fail #![feature(ffi_returns_twice)] #![crate_type = "lib"] @@ -15,7 +18,7 @@ pub fn foo() {} For example, we might correct the previous example by declaring the function inside of an `extern` block. -``` +```compile_fail #![feature(ffi_returns_twice)] extern "C" { diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs index 68b6f69854dd6..019cc1c847e91 100644 --- a/compiler/rustc_feature/src/builtin_attrs.rs +++ b/compiler/rustc_feature/src/builtin_attrs.rs @@ -440,9 +440,6 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ experimental!(optimize), ), - gated!( - ffi_returns_twice, Normal, template!(Word), WarnFollowing, experimental!(ffi_returns_twice) - ), gated!(ffi_pure, Normal, template!(Word), WarnFollowing, experimental!(ffi_pure)), gated!(ffi_const, Normal, template!(Word), WarnFollowing, experimental!(ffi_const)), gated!( diff --git a/compiler/rustc_feature/src/removed.rs b/compiler/rustc_feature/src/removed.rs index 67ee53d8ae53f..dc97898736808 100644 --- a/compiler/rustc_feature/src/removed.rs +++ b/compiler/rustc_feature/src/removed.rs @@ -95,6 +95,9 @@ declare_features! ( /// Allows `#[doc(include = "some-file")]`. (removed, external_doc, "1.54.0", Some(44732), Some("use #[doc = include_str!(\"filename\")] instead, which handles macro invocations")), + /// Allows using `#[ffi_returns_twice]` on foreign functions. + (removed, ffi_returns_twice, "CURRENT_RUSTC_VERSION", Some(58314), + Some("being investigated by the ffi-unwind project group")), /// Allows generators to be cloned. (removed, generator_clone, "1.65.0", Some(95360), Some("renamed to `coroutine_clone`")), /// Allows defining generators. diff --git a/compiler/rustc_feature/src/unstable.rs b/compiler/rustc_feature/src/unstable.rs index e66a66e23dc4f..0efc031df0aa6 100644 --- a/compiler/rustc_feature/src/unstable.rs +++ b/compiler/rustc_feature/src/unstable.rs @@ -467,8 +467,6 @@ declare_features! ( (unstable, ffi_const, "1.45.0", Some(58328)), /// Allows the use of `#[ffi_pure]` on foreign functions. (unstable, ffi_pure, "1.45.0", Some(58329)), - /// Allows using `#[ffi_returns_twice]` on foreign functions. - (unstable, ffi_returns_twice, "1.34.0", Some(58314)), /// Allows using `#[repr(align(...))]` on function items (unstable, fn_align, "1.53.0", Some(82232)), /// Support delegating implementation of functions to other already implemented functions. diff --git a/compiler/rustc_llvm/llvm-wrapper/LLVMWrapper.h b/compiler/rustc_llvm/llvm-wrapper/LLVMWrapper.h index 5bfffc5d9117b..6d578c97f3fe1 100644 --- a/compiler/rustc_llvm/llvm-wrapper/LLVMWrapper.h +++ b/compiler/rustc_llvm/llvm-wrapper/LLVMWrapper.h @@ -76,7 +76,6 @@ enum LLVMRustAttribute { SanitizeMemory = 22, NonLazyBind = 23, OptimizeNone = 24, - ReturnsTwice = 25, ReadNone = 26, SanitizeHWAddress = 28, WillReturn = 29, diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp index 0df7b7eed11f9..a2dfebec59441 100644 --- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp +++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp @@ -250,8 +250,6 @@ static Attribute::AttrKind fromRust(LLVMRustAttribute Kind) { return Attribute::NonLazyBind; case OptimizeNone: return Attribute::OptimizeNone; - case ReturnsTwice: - return Attribute::ReturnsTwice; case ReadNone: return Attribute::ReadNone; case SanitizeHWAddress: diff --git a/compiler/rustc_middle/src/middle/codegen_fn_attrs.rs b/compiler/rustc_middle/src/middle/codegen_fn_attrs.rs index e11c9371118cb..7d6d39a2a8a39 100644 --- a/compiler/rustc_middle/src/middle/codegen_fn_attrs.rs +++ b/compiler/rustc_middle/src/middle/codegen_fn_attrs.rs @@ -74,35 +74,32 @@ bitflags! { /// `#[used]`: indicates that LLVM can't eliminate this function (but the /// linker can!). const USED = 1 << 9; - /// `#[ffi_returns_twice]`, indicates that an extern function can return - /// multiple times - const FFI_RETURNS_TWICE = 1 << 10; /// `#[track_caller]`: allow access to the caller location - const TRACK_CALLER = 1 << 11; + const TRACK_CALLER = 1 << 10; /// #[ffi_pure]: applies clang's `pure` attribute to a foreign function /// declaration. - const FFI_PURE = 1 << 12; + const FFI_PURE = 1 << 11; /// #[ffi_const]: applies clang's `const` attribute to a foreign function /// declaration. - const FFI_CONST = 1 << 13; + const FFI_CONST = 1 << 12; /// #[cmse_nonsecure_entry]: with a TrustZone-M extension, declare a /// function as an entry function from Non-Secure code. - const CMSE_NONSECURE_ENTRY = 1 << 14; + const CMSE_NONSECURE_ENTRY = 1 << 13; /// `#[coverage(off)]`: indicates that the function should be ignored by /// the MIR `InstrumentCoverage` pass and not added to the coverage map /// during codegen. - const NO_COVERAGE = 1 << 15; + const NO_COVERAGE = 1 << 14; /// `#[used(linker)]`: /// indicates that neither LLVM nor the linker will eliminate this function. - const USED_LINKER = 1 << 16; + const USED_LINKER = 1 << 15; /// `#[rustc_deallocator]`: a hint to LLVM that the function only deallocates memory. - const DEALLOCATOR = 1 << 17; + const DEALLOCATOR = 1 << 16; /// `#[rustc_reallocator]`: a hint to LLVM that the function only reallocates memory. - const REALLOCATOR = 1 << 18; + const REALLOCATOR = 1 << 17; /// `#[rustc_allocator_zeroed]`: a hint to LLVM that the function only allocates zeroed memory. - const ALLOCATOR_ZEROED = 1 << 19; + const ALLOCATOR_ZEROED = 1 << 18; /// `#[no_builtins]`: indicates that disable implicit builtin knowledge of functions for the function. - const NO_BUILTINS = 1 << 20; + const NO_BUILTINS = 1 << 19; } } rustc_data_structures::external_bitflags_debug! { CodegenFnAttrFlags } diff --git a/compiler/rustc_passes/messages.ftl b/compiler/rustc_passes/messages.ftl index d41cc724408a4..648ef9d51deaa 100644 --- a/compiler/rustc_passes/messages.ftl +++ b/compiler/rustc_passes/messages.ftl @@ -323,9 +323,6 @@ passes_ffi_const_invalid_target = passes_ffi_pure_invalid_target = `#[ffi_pure]` may only be used on foreign functions -passes_ffi_returns_twice_invalid_target = - `#[ffi_returns_twice]` may only be used on foreign functions - passes_has_incoherent_inherent_impl = `rustc_has_incoherent_inherent_impls` attribute should be applied to types or traits. .label = only adts, extern types and traits are supported diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs index 8f27d01794cc6..51725285bd7ac 100644 --- a/compiler/rustc_passes/src/check_attr.rs +++ b/compiler/rustc_passes/src/check_attr.rs @@ -190,7 +190,6 @@ impl<'tcx> CheckAttrVisitor<'tcx> { } sym::ffi_pure => self.check_ffi_pure(attr.span, attrs, target), sym::ffi_const => self.check_ffi_const(attr.span, target), - sym::ffi_returns_twice => self.check_ffi_returns_twice(attr.span, target), sym::rustc_const_unstable | sym::rustc_const_stable | sym::unstable @@ -1307,15 +1306,6 @@ impl<'tcx> CheckAttrVisitor<'tcx> { } } - fn check_ffi_returns_twice(&self, attr_span: Span, target: Target) -> bool { - if target == Target::ForeignFn { - true - } else { - self.dcx().emit_err(errors::FfiReturnsTwiceInvalidTarget { attr_span }); - false - } - } - /// Warns against some misuses of `#[must_use]` fn check_must_use(&self, hir_id: HirId, attr: &Attribute, target: Target) -> bool { if !matches!( diff --git a/compiler/rustc_passes/src/errors.rs b/compiler/rustc_passes/src/errors.rs index 77bfe57e3706f..6a499a98681e6 100644 --- a/compiler/rustc_passes/src/errors.rs +++ b/compiler/rustc_passes/src/errors.rs @@ -390,13 +390,6 @@ pub struct FfiConstInvalidTarget { pub attr_span: Span, } -#[derive(Diagnostic)] -#[diag(passes_ffi_returns_twice_invalid_target, code = E0724)] -pub struct FfiReturnsTwiceInvalidTarget { - #[primary_span] - pub attr_span: Span, -} - #[derive(LintDiagnostic)] #[diag(passes_must_use_async)] pub struct MustUseAsync { diff --git a/src/tools/tidy/src/ui_tests.rs b/src/tools/tidy/src/ui_tests.rs index 451276b5ac157..094694274269f 100644 --- a/src/tools/tidy/src/ui_tests.rs +++ b/src/tools/tidy/src/ui_tests.rs @@ -14,7 +14,7 @@ use std::path::{Path, PathBuf}; // #73494. const ENTRY_LIMIT: usize = 900; const ISSUES_ENTRY_LIMIT: usize = 1807; -const ROOT_ENTRY_LIMIT: usize = 870; +const ROOT_ENTRY_LIMIT: usize = 868; const EXPECTED_TEST_FILE_EXTENSIONS: &[&str] = &[ "rs", // test source files diff --git a/tests/codegen/cffi/ffi-returns-twice.rs b/tests/codegen/cffi/ffi-returns-twice.rs deleted file mode 100644 index 0fbe03f0bb6f1..0000000000000 --- a/tests/codegen/cffi/ffi-returns-twice.rs +++ /dev/null @@ -1,11 +0,0 @@ -// compile-flags: -C no-prepopulate-passes -#![crate_type = "lib"] -#![feature(ffi_returns_twice)] - -pub fn bar() { unsafe { foo() } } - -extern "C" { - // CHECK: declare{{( dso_local)?}} void @foo(){{.*}}[[ATTRS:#[0-9]+]] - // CHECK: attributes [[ATTRS]] = { {{.*}}returns_twice{{.*}} } - #[ffi_returns_twice] pub fn foo(); -} diff --git a/tests/ui/feature-gates/feature-gate-ffi_returns_twice.rs b/tests/ui/feature-gates/feature-gate-ffi_returns_twice.rs deleted file mode 100644 index f354534356c21..0000000000000 --- a/tests/ui/feature-gates/feature-gate-ffi_returns_twice.rs +++ /dev/null @@ -1,6 +0,0 @@ -#![crate_type = "lib"] - -extern "C" { - #[ffi_returns_twice] //~ ERROR the `#[ffi_returns_twice]` attribute is an experimental feature - pub fn foo(); -} diff --git a/tests/ui/feature-gates/feature-gate-ffi_returns_twice.stderr b/tests/ui/feature-gates/feature-gate-ffi_returns_twice.stderr deleted file mode 100644 index 8d19874c36a0c..0000000000000 --- a/tests/ui/feature-gates/feature-gate-ffi_returns_twice.stderr +++ /dev/null @@ -1,13 +0,0 @@ -error[E0658]: the `#[ffi_returns_twice]` attribute is an experimental feature - --> $DIR/feature-gate-ffi_returns_twice.rs:4:5 - | -LL | #[ffi_returns_twice] - | ^^^^^^^^^^^^^^^^^^^^ - | - = note: see issue #58314 for more information - = help: add `#![feature(ffi_returns_twice)]` to the crate attributes to enable - = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date - -error: aborting due to 1 previous error - -For more information about this error, try `rustc --explain E0658`. diff --git a/tests/ui/ffi_returns_twice.rs b/tests/ui/ffi_returns_twice.rs deleted file mode 100644 index 8195d0e486369..0000000000000 --- a/tests/ui/ffi_returns_twice.rs +++ /dev/null @@ -1,15 +0,0 @@ -#![feature(ffi_returns_twice)] -#![crate_type = "lib"] - -#[ffi_returns_twice] //~ ERROR `#[ffi_returns_twice]` may only be used on foreign functions -pub fn foo() {} - -#[ffi_returns_twice] //~ ERROR `#[ffi_returns_twice]` may only be used on foreign functions -macro_rules! bar { - () => () -} - -extern "C" { - #[ffi_returns_twice] //~ ERROR `#[ffi_returns_twice]` may only be used on foreign functions - static INT: i32; -} diff --git a/tests/ui/ffi_returns_twice.stderr b/tests/ui/ffi_returns_twice.stderr deleted file mode 100644 index 0abe7613f1493..0000000000000 --- a/tests/ui/ffi_returns_twice.stderr +++ /dev/null @@ -1,21 +0,0 @@ -error[E0724]: `#[ffi_returns_twice]` may only be used on foreign functions - --> $DIR/ffi_returns_twice.rs:4:1 - | -LL | #[ffi_returns_twice] - | ^^^^^^^^^^^^^^^^^^^^ - -error[E0724]: `#[ffi_returns_twice]` may only be used on foreign functions - --> $DIR/ffi_returns_twice.rs:7:1 - | -LL | #[ffi_returns_twice] - | ^^^^^^^^^^^^^^^^^^^^ - -error[E0724]: `#[ffi_returns_twice]` may only be used on foreign functions - --> $DIR/ffi_returns_twice.rs:13:5 - | -LL | #[ffi_returns_twice] - | ^^^^^^^^^^^^^^^^^^^^ - -error: aborting due to 3 previous errors - -For more information about this error, try `rustc --explain E0724`. From 49d49eb67ec398c12788022b8f827fbc646c7663 Mon Sep 17 00:00:00 2001 From: Vadim Petrochenkov Date: Tue, 30 Jan 2024 22:03:16 +0300 Subject: [PATCH 11/25] ast_lowering: Make sure all imports have non-empty resolution lists HIR visitor visits import paths once per resolution, so if some import has an empty resolution list, like in case of import list stems, its path stays unvisited. --- compiler/rustc_ast_lowering/src/item.rs | 6 ++---- compiler/rustc_ast_lowering/src/lib.rs | 8 +++++--- compiler/rustc_ast_lowering/src/path.rs | 1 + 3 files changed, 8 insertions(+), 7 deletions(-) diff --git a/compiler/rustc_ast_lowering/src/item.rs b/compiler/rustc_ast_lowering/src/item.rs index dd3f7289a60b2..5805ac64c3d60 100644 --- a/compiler/rustc_ast_lowering/src/item.rs +++ b/compiler/rustc_ast_lowering/src/item.rs @@ -496,8 +496,7 @@ impl<'hir> LoweringContext<'_, 'hir> { } } - let res = - self.expect_full_res_from_use(id).map(|res| self.lower_res(res)).collect(); + let res = self.lower_import_res(id); let path = self.lower_use_path(res, &path, ParamMode::Explicit); hir::ItemKind::Use(path, hir::UseKind::Single) } @@ -567,8 +566,7 @@ impl<'hir> LoweringContext<'_, 'hir> { }); } - let res = - self.expect_full_res_from_use(id).map(|res| self.lower_res(res)).collect(); + let res = self.lower_import_res(id); let path = self.lower_use_path(res, &prefix, ParamMode::Explicit); hir::ItemKind::Use(path, hir::UseKind::ListStem) } diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs index 3621844efc8d2..f14bb282bbc7e 100644 --- a/compiler/rustc_ast_lowering/src/lib.rs +++ b/compiler/rustc_ast_lowering/src/lib.rs @@ -63,7 +63,7 @@ use rustc_middle::ty::{ResolverAstLowering, TyCtxt}; use rustc_session::parse::{add_feature_diagnostics, feature_err}; use rustc_span::symbol::{kw, sym, Ident, Symbol}; use rustc_span::{DesugaringKind, Span, DUMMY_SP}; -use smallvec::SmallVec; +use smallvec::{smallvec, SmallVec}; use std::collections::hash_map::Entry; use thin_vec::ThinVec; @@ -749,8 +749,10 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> { self.resolver.get_partial_res(id).map_or(Res::Err, |pr| pr.expect_full_res()) } - fn expect_full_res_from_use(&mut self, id: NodeId) -> impl Iterator> { - self.resolver.get_import_res(id).present_items() + fn lower_import_res(&mut self, id: NodeId) -> SmallVec<[Res; 3]> { + let res = self.resolver.get_import_res(id).present_items(); + let res: SmallVec<_> = res.map(|res| self.lower_res(res)).collect(); + if !res.is_empty() { res } else { smallvec![Res::Err] } } fn make_lang_item_qpath(&mut self, lang_item: hir::LangItem, span: Span) -> hir::QPath<'hir> { diff --git a/compiler/rustc_ast_lowering/src/path.rs b/compiler/rustc_ast_lowering/src/path.rs index c679ee56fcd8b..4df68f8e9297d 100644 --- a/compiler/rustc_ast_lowering/src/path.rs +++ b/compiler/rustc_ast_lowering/src/path.rs @@ -156,6 +156,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> { p: &Path, param_mode: ParamMode, ) -> &'hir hir::UsePath<'hir> { + assert!((1..=3).contains(&res.len())); self.arena.alloc(hir::UsePath { res, segments: self.arena.alloc_from_iter(p.segments.iter().map(|segment| { From 3ff6796460b1683b864ae39f64fbf9ca5be16425 Mon Sep 17 00:00:00 2001 From: Vadim Petrochenkov Date: Sat, 20 Jan 2024 15:21:27 +0300 Subject: [PATCH 12/25] hir: Make sure all `HirId`s have corresponding HIR `Node`s --- compiler/rustc_ast_lowering/src/index.rs | 42 ++++++++++++++++--- compiler/rustc_ast_lowering/src/lib.rs | 3 +- .../src/diagnostics/region_errors.rs | 3 +- compiler/rustc_hir/src/hir.rs | 33 ++++++++------- .../rustc_hir_analysis/src/collect/type_of.rs | 2 + compiler/rustc_hir_pretty/src/lib.rs | 7 ++++ .../src/fn_ctxt/suggestions.rs | 2 +- compiler/rustc_metadata/src/rmeta/encoder.rs | 10 +---- compiler/rustc_middle/src/hir/map/mod.rs | 12 ++++-- .../clippy_lints/src/min_ident_chars.rs | 2 +- 10 files changed, 79 insertions(+), 37 deletions(-) diff --git a/compiler/rustc_ast_lowering/src/index.rs b/compiler/rustc_ast_lowering/src/index.rs index 993ddf00eb5b9..ff3870cf11b92 100644 --- a/compiler/rustc_ast_lowering/src/index.rs +++ b/compiler/rustc_ast_lowering/src/index.rs @@ -15,7 +15,7 @@ struct NodeCollector<'a, 'hir> { bodies: &'a SortedMap>, /// Outputs - nodes: IndexVec>>, + nodes: IndexVec>, parenting: LocalDefIdMap, /// The parent of this node @@ -29,16 +29,19 @@ pub(super) fn index_hir<'hir>( tcx: TyCtxt<'hir>, item: hir::OwnerNode<'hir>, bodies: &SortedMap>, -) -> (IndexVec>>, LocalDefIdMap) { - let mut nodes = IndexVec::new(); + num_nodes: usize, +) -> (IndexVec>, LocalDefIdMap) { + let zero_id = ItemLocalId::new(0); + let err_node = ParentedNode { parent: zero_id, node: Node::Err(item.span()) }; + let mut nodes = IndexVec::from_elem_n(err_node, num_nodes); // This node's parent should never be accessed: the owner's parent is computed by the // hir_owner_parent query. Make it invalid (= ItemLocalId::MAX) to force an ICE whenever it is // used. - nodes.push(Some(ParentedNode { parent: ItemLocalId::INVALID, node: item.into() })); + nodes[zero_id] = ParentedNode { parent: ItemLocalId::INVALID, node: item.into() }; let mut collector = NodeCollector { tcx, owner: item.def_id(), - parent_node: ItemLocalId::new(0), + parent_node: zero_id, nodes, bodies, parenting: Default::default(), @@ -54,6 +57,14 @@ pub(super) fn index_hir<'hir>( OwnerNode::ForeignItem(item) => collector.visit_foreign_item(item), }; + for (local_id, node) in collector.nodes.iter_enumerated() { + if let Node::Err(span) = node.node { + let hir_id = HirId { owner: item.def_id(), local_id }; + let msg = format!("ID {hir_id} not encountered when visiting item HIR"); + tcx.dcx().span_delayed_bug(*span, msg); + } + } + (collector.nodes, collector.parenting) } @@ -88,7 +99,7 @@ impl<'a, 'hir> NodeCollector<'a, 'hir> { } } - self.nodes.insert(hir_id.local_id, ParentedNode { parent: self.parent_node, node }); + self.nodes[hir_id.local_id] = ParentedNode { parent: self.parent_node, node }; } fn with_parent(&mut self, parent_node_id: HirId, f: F) { @@ -348,4 +359,23 @@ impl<'a, 'hir> Visitor<'hir> for NodeCollector<'a, 'hir> { self.visit_nested_foreign_item(id); } + + fn visit_where_predicate(&mut self, predicate: &'hir WherePredicate<'hir>) { + match predicate { + WherePredicate::BoundPredicate(pred) => { + self.insert(pred.span, pred.hir_id, Node::WhereBoundPredicate(pred)); + self.with_parent(pred.hir_id, |this| { + intravisit::walk_where_predicate(this, predicate) + }) + } + _ => intravisit::walk_where_predicate(self, predicate), + } + } + + fn visit_array_length(&mut self, len: &'hir ArrayLen) { + match len { + ArrayLen::Infer(inf) => self.insert(inf.span, inf.hir_id, Node::ArrayLenInfer(inf)), + ArrayLen::Body(..) => intravisit::walk_array_len(self, len), + } + } } diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs index f14bb282bbc7e..bcd6453523caa 100644 --- a/compiler/rustc_ast_lowering/src/lib.rs +++ b/compiler/rustc_ast_lowering/src/lib.rs @@ -674,7 +674,8 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> { } else { (None, None) }; - let (nodes, parenting) = index::index_hir(self.tcx, node, &bodies); + let num_nodes = self.item_local_id_counter.as_usize(); + let (nodes, parenting) = index::index_hir(self.tcx, node, &bodies, num_nodes); let nodes = hir::OwnerNodes { opt_hash_including_bodies, nodes, bodies }; let attrs = hir::AttributeMap { map: attrs, opt_hash: attrs_hash }; diff --git a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs index 8c8ca1ead400b..0733fc48ed56c 100644 --- a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs +++ b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs @@ -216,7 +216,8 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> { if let Some(id) = placeholder.bound.kind.get_id() && let Some(placeholder_id) = id.as_local() && let gat_hir_id = self.infcx.tcx.local_def_id_to_hir_id(placeholder_id) - && let Some(generics_impl) = hir.get_parent(gat_hir_id).generics() + && let Some(generics_impl) = + hir.get_parent(hir.parent_id(gat_hir_id)).generics() { Some((gat_hir_id, generics_impl)) } else { diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs index 681e228a0f2ff..54155dc7a9487 100644 --- a/compiler/rustc_hir/src/hir.rs +++ b/compiler/rustc_hir/src/hir.rs @@ -835,7 +835,7 @@ pub struct OwnerNodes<'tcx> { // The zeroth node's parent should never be accessed: the owner's parent is computed by the // hir_owner_parent query. It is set to `ItemLocalId::INVALID` to force an ICE if accidentally // used. - pub nodes: IndexVec>>, + pub nodes: IndexVec>, /// Content of local bodies. pub bodies: SortedMap>, } @@ -843,9 +843,8 @@ pub struct OwnerNodes<'tcx> { impl<'tcx> OwnerNodes<'tcx> { pub fn node(&self) -> OwnerNode<'tcx> { use rustc_index::Idx; - let node = self.nodes[ItemLocalId::new(0)].as_ref().unwrap().node; - let node = node.as_owner().unwrap(); // Indexing must ensure it is an OwnerNode. - node + // Indexing must ensure it is an OwnerNode. + self.nodes[ItemLocalId::new(0)].node.as_owner().unwrap() } } @@ -860,9 +859,7 @@ impl fmt::Debug for OwnerNodes<'_> { .nodes .iter_enumerated() .map(|(id, parented_node)| { - let parented_node = parented_node.as_ref().map(|node| node.parent); - - debug_fn(move |f| write!(f, "({id:?}, {parented_node:?})")) + debug_fn(move |f| write!(f, "({id:?}, {:?})", parented_node.parent)) }) .collect::>(), ) @@ -3357,13 +3354,15 @@ impl<'hir> OwnerNode<'hir> { } } - pub fn span(&self) -> Span { + // Span by reference to pass to `Node::Err`. + #[allow(rustc::pass_by_value)] + pub fn span(&self) -> &'hir Span { match self { OwnerNode::Item(Item { span, .. }) | OwnerNode::ForeignItem(ForeignItem { span, .. }) | OwnerNode::ImplItem(ImplItem { span, .. }) - | OwnerNode::TraitItem(TraitItem { span, .. }) => *span, - OwnerNode::Crate(Mod { spans: ModSpans { inner_span, .. }, .. }) => *inner_span, + | OwnerNode::TraitItem(TraitItem { span, .. }) => span, + OwnerNode::Crate(Mod { spans: ModSpans { inner_span, .. }, .. }) => inner_span, } } @@ -3492,17 +3491,18 @@ pub enum Node<'hir> { Arm(&'hir Arm<'hir>), Block(&'hir Block<'hir>), Local(&'hir Local<'hir>), - /// `Ctor` refers to the constructor of an enum variant or struct. Only tuple or unit variants /// with synthesized constructors. Ctor(&'hir VariantData<'hir>), - Lifetime(&'hir Lifetime), GenericParam(&'hir GenericParam<'hir>), - Crate(&'hir Mod<'hir>), - Infer(&'hir InferArg), + WhereBoundPredicate(&'hir WhereBoundPredicate<'hir>), + ArrayLenInfer(&'hir InferArg), + // Span by reference to minimize `Node`'s size + #[allow(rustc::pass_by_value)] + Err(&'hir Span), } impl<'hir> Node<'hir> { @@ -3547,7 +3547,10 @@ impl<'hir> Node<'hir> { | Node::Crate(..) | Node::Ty(..) | Node::TraitRef(..) - | Node::Infer(..) => None, + | Node::Infer(..) + | Node::WhereBoundPredicate(..) + | Node::ArrayLenInfer(..) + | Node::Err(..) => None, } } diff --git a/compiler/rustc_hir_analysis/src/collect/type_of.rs b/compiler/rustc_hir_analysis/src/collect/type_of.rs index 3674a760cbf9d..c587f0ba96422 100644 --- a/compiler/rustc_hir_analysis/src/collect/type_of.rs +++ b/compiler/rustc_hir_analysis/src/collect/type_of.rs @@ -509,6 +509,8 @@ pub(super) fn type_of(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::EarlyBinder bug!("unexpected non-type Node::GenericParam: {:?}", x), }, + Node::ArrayLenInfer(_) => tcx.types.usize, + x => { bug!("unexpected sort of node in type_of(): {:?}", x); } diff --git a/compiler/rustc_hir_pretty/src/lib.rs b/compiler/rustc_hir_pretty/src/lib.rs index 9d0c5cb0f32b0..95f8a754664b7 100644 --- a/compiler/rustc_hir_pretty/src/lib.rs +++ b/compiler/rustc_hir_pretty/src/lib.rs @@ -117,6 +117,13 @@ impl<'a> State<'a> { Node::Ctor(..) => panic!("cannot print isolated Ctor"), Node::Local(a) => self.print_local_decl(a), Node::Crate(..) => panic!("cannot print Crate"), + Node::WhereBoundPredicate(pred) => { + self.print_formal_generic_params(pred.bound_generic_params); + self.print_type(pred.bounded_ty); + self.print_bounds(":", pred.bounds); + } + Node::ArrayLenInfer(_) => self.word("_"), + Node::Err(_) => self.word("/*ERROR*/"), } } } diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs index 95c1139e43e44..a83bd715849fc 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs @@ -1053,7 +1053,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { if self.can_coerce(found, ty) { if let Some(node) = self.tcx.opt_hir_node(fn_id) && let Some(owner_node) = node.as_owner() - && let Some(span) = expr.span.find_ancestor_inside(owner_node.span()) + && let Some(span) = expr.span.find_ancestor_inside(*owner_node.span()) { err.multipart_suggestion( "you might have meant to return this value", diff --git a/compiler/rustc_metadata/src/rmeta/encoder.rs b/compiler/rustc_metadata/src/rmeta/encoder.rs index 542caf8622385..b6607111ad3a3 100644 --- a/compiler/rustc_metadata/src/rmeta/encoder.rs +++ b/compiler/rustc_metadata/src/rmeta/encoder.rs @@ -1388,13 +1388,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { if should_encode_fn_sig(def_kind) { record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id)); } - // FIXME: Some anonymous constants produced by `#[rustc_legacy_const_generics]` - // do not have corresponding HIR nodes, so some queries usually making sense for - // anonymous constants will not work on them and panic. It's not clear whether it - // can cause any observable issues or not. - let anon_const_without_hir = def_kind == DefKind::AnonConst - && tcx.opt_hir_node(tcx.local_def_id_to_hir_id(local_id)).is_none(); - if should_encode_generics(def_kind) && !anon_const_without_hir { + if should_encode_generics(def_kind) { let g = tcx.generics_of(def_id); record!(self.tables.generics_of[def_id] <- g); record!(self.tables.explicit_predicates_of[def_id] <- self.tcx.explicit_predicates_of(def_id)); @@ -1408,7 +1402,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { } } } - if should_encode_type(tcx, local_id, def_kind) && !anon_const_without_hir { + if should_encode_type(tcx, local_id, def_kind) { record!(self.tables.type_of[def_id] <- self.tcx.type_of(def_id)); } if should_encode_constness(def_kind) { diff --git a/compiler/rustc_middle/src/hir/map/mod.rs b/compiler/rustc_middle/src/hir/map/mod.rs index ba1ae46626b22..64e19e0946fd0 100644 --- a/compiler/rustc_middle/src/hir/map/mod.rs +++ b/compiler/rustc_middle/src/hir/map/mod.rs @@ -159,9 +159,7 @@ impl<'tcx> TyCtxt<'tcx> { /// Retrieves the `hir::Node` corresponding to `id`, returning `None` if cannot be found. pub fn opt_hir_node(self, id: HirId) -> Option> { - let owner = self.hir_owner_nodes(id.owner); - let node = owner.nodes[id.local_id].as_ref()?; - Some(node.node) + Some(self.hir_owner_nodes(id.owner).nodes[id.local_id].node) } /// Retrieves the `hir::Node` corresponding to `id`, returning `None` if cannot be found. @@ -233,7 +231,7 @@ impl<'hir> Map<'hir> { Some(self.tcx.hir_owner_parent(id.owner)) } else { let owner = self.tcx.hir_owner_nodes(id.owner); - let node = owner.nodes[id.local_id].as_ref()?; + let node = &owner.nodes[id.local_id]; let hir_id = HirId { owner: id.owner, local_id: node.parent }; // HIR indexing should have checked that. debug_assert_ne!(id.local_id, node.parent); @@ -994,6 +992,9 @@ impl<'hir> Map<'hir> { Node::Infer(i) => i.span, Node::Local(local) => local.span, Node::Crate(item) => item.spans.inner_span, + Node::WhereBoundPredicate(pred) => pred.span, + Node::ArrayLenInfer(inf) => inf.span, + Node::Err(span) => *span, } } @@ -1255,6 +1256,9 @@ fn hir_id_to_string(map: Map<'_>, id: HirId) -> String { format!("{id} (generic_param {})", path_str(param.def_id)) } Some(Node::Crate(..)) => String::from("(root_crate)"), + Some(Node::WhereBoundPredicate(_)) => node_str("where bound predicate"), + Some(Node::ArrayLenInfer(_)) => node_str("array len infer"), + Some(Node::Err(_)) => node_str("error"), None => format!("{id} (unknown node)"), } } diff --git a/src/tools/clippy/clippy_lints/src/min_ident_chars.rs b/src/tools/clippy/clippy_lints/src/min_ident_chars.rs index 41168230752a8..2f9f04832a750 100644 --- a/src/tools/clippy/clippy_lints/src/min_ident_chars.rs +++ b/src/tools/clippy/clippy_lints/src/min_ident_chars.rs @@ -94,7 +94,7 @@ impl Visitor<'_> for IdentVisitor<'_, '_> { cx.tcx.opt_hir_node(hir_id) } else { let owner = cx.tcx.hir_owner_nodes(hir_id.owner); - owner.nodes.get(hir_id.local_id).copied().flatten().map(|p| p.node) + owner.nodes.get(hir_id.local_id).copied().map(|p| p.node) }; let Some(node) = node else { return; From e292423eb47152f623364d5196b2ca4a8d1fed07 Mon Sep 17 00:00:00 2001 From: Vadim Petrochenkov Date: Sun, 21 Jan 2024 21:13:15 +0300 Subject: [PATCH 13/25] hir: Remove `fn opt_hir_id` and `fn opt_span` --- .../src/diagnostics/conflict_errors.rs | 121 ++++++++--------- .../src/diagnostics/explain_borrow.rs | 2 +- .../src/diagnostics/mutability_errors.rs | 14 +- compiler/rustc_hir/src/intravisit.rs | 6 +- .../rustc_hir_analysis/src/check/entry.rs | 14 +- .../wrong_number_of_generic_args.rs | 3 +- compiler/rustc_hir_pretty/src/lib.rs | 2 +- compiler/rustc_hir_typeck/src/coercion.rs | 4 +- compiler/rustc_hir_typeck/src/demand.rs | 49 +++---- compiler/rustc_hir_typeck/src/expr.rs | 5 +- .../rustc_hir_typeck/src/fn_ctxt/checks.rs | 2 +- .../src/fn_ctxt/suggestions.rs | 74 +++++----- .../rustc_hir_typeck/src/method/suggest.rs | 6 +- .../rustc_hir_typeck/src/rvalue_scopes.rs | 4 +- compiler/rustc_hir_typeck/src/upvar.rs | 4 +- .../src/infer/error_reporting/mod.rs | 2 +- .../rustc_infer/src/infer/opaque_types.rs | 2 +- .../src/traits/error_reporting/mod.rs | 3 +- compiler/rustc_middle/src/hir/map/mod.rs | 126 ++++++++---------- compiler/rustc_middle/src/hir/mod.rs | 7 +- compiler/rustc_passes/src/check_attr.rs | 13 +- compiler/rustc_passes/src/loops.rs | 4 +- .../src/traits/error_reporting/suggestions.rs | 43 +++--- .../error_reporting/type_err_ctxt_ext.rs | 12 +- src/librustdoc/html/render/span_map.rs | 4 +- .../clippy/clippy_lints/src/absolute_paths.rs | 2 +- .../src/casts/cast_slice_different_sizes.rs | 5 +- .../src/casts/unnecessary_cast.rs | 3 +- .../clippy_lints/src/derivable_impls.rs | 2 +- .../clippy/clippy_lints/src/empty_drop.rs | 2 +- src/tools/clippy/clippy_lints/src/escape.rs | 6 +- .../clippy/clippy_lints/src/explicit_write.rs | 2 +- .../clippy_lints/src/index_refutable_slice.rs | 4 +- src/tools/clippy/clippy_lints/src/len_zero.rs | 6 +- .../clippy_lints/src/loops/same_item_push.rs | 2 +- .../clippy_lints/src/manual_rem_euclid.rs | 2 +- .../clippy_lints/src/methods/filter_next.rs | 2 +- .../src/methods/option_map_unwrap_or.rs | 4 +- .../clippy_lints/src/min_ident_chars.rs | 2 +- .../src/mixed_read_write_in_expression.rs | 5 +- .../clippy/clippy_lints/src/non_copy_const.rs | 2 +- .../clippy_lints/src/same_name_method.rs | 4 +- .../src/self_named_constructors.rs | 2 +- src/tools/clippy/clippy_utils/src/lib.rs | 10 +- 44 files changed, 267 insertions(+), 326 deletions(-) diff --git a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs index 2e83072b8d132..ab93d4620db8a 100644 --- a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs +++ b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs @@ -401,66 +401,60 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { } let typeck = self.infcx.tcx.typeck(self.mir_def_id()); let hir_id = hir.parent_id(expr.hir_id); - if let Some(parent) = self.infcx.tcx.opt_hir_node(hir_id) { - let (def_id, args, offset) = if let hir::Node::Expr(parent_expr) = parent - && let hir::ExprKind::MethodCall(_, _, args, _) = parent_expr.kind - && let Some(def_id) = typeck.type_dependent_def_id(parent_expr.hir_id) - { - (def_id.as_local(), args, 1) - } else if let hir::Node::Expr(parent_expr) = parent - && let hir::ExprKind::Call(call, args) = parent_expr.kind - && let ty::FnDef(def_id, _) = typeck.node_type(call.hir_id).kind() - { - (def_id.as_local(), args, 0) - } else { - (None, &[][..], 0) + let parent = self.infcx.tcx.hir_node(hir_id); + let (def_id, args, offset) = if let hir::Node::Expr(parent_expr) = parent + && let hir::ExprKind::MethodCall(_, _, args, _) = parent_expr.kind + && let Some(def_id) = typeck.type_dependent_def_id(parent_expr.hir_id) + { + (def_id.as_local(), args, 1) + } else if let hir::Node::Expr(parent_expr) = parent + && let hir::ExprKind::Call(call, args) = parent_expr.kind + && let ty::FnDef(def_id, _) = typeck.node_type(call.hir_id).kind() + { + (def_id.as_local(), args, 0) + } else { + (None, &[][..], 0) + }; + if let Some(def_id) = def_id + && let node = + self.infcx.tcx.hir_node(self.infcx.tcx.local_def_id_to_hir_id(def_id)) + && let Some(fn_sig) = node.fn_sig() + && let Some(ident) = node.ident() + && let Some(pos) = args.iter().position(|arg| arg.hir_id == expr.hir_id) + && let Some(arg) = fn_sig.decl.inputs.get(pos + offset) + { + let mut span: MultiSpan = arg.span.into(); + span.push_span_label( + arg.span, + "this parameter takes ownership of the value".to_string(), + ); + let descr = match node.fn_kind() { + Some(hir::intravisit::FnKind::ItemFn(..)) | None => "function", + Some(hir::intravisit::FnKind::Method(..)) => "method", + Some(hir::intravisit::FnKind::Closure) => "closure", }; - if let Some(def_id) = def_id - && let Some(node) = self - .infcx - .tcx - .opt_hir_node(self.infcx.tcx.local_def_id_to_hir_id(def_id)) - && let Some(fn_sig) = node.fn_sig() - && let Some(ident) = node.ident() - && let Some(pos) = args.iter().position(|arg| arg.hir_id == expr.hir_id) - && let Some(arg) = fn_sig.decl.inputs.get(pos + offset) - { - let mut span: MultiSpan = arg.span.into(); - span.push_span_label( - arg.span, - "this parameter takes ownership of the value".to_string(), - ); - let descr = match node.fn_kind() { - Some(hir::intravisit::FnKind::ItemFn(..)) | None => "function", - Some(hir::intravisit::FnKind::Method(..)) => "method", - Some(hir::intravisit::FnKind::Closure) => "closure", - }; - span.push_span_label(ident.span, format!("in this {descr}")); - err.span_note( - span, - format!( - "consider changing this parameter type in {descr} `{ident}` to \ + span.push_span_label(ident.span, format!("in this {descr}")); + err.span_note( + span, + format!( + "consider changing this parameter type in {descr} `{ident}` to \ borrow instead if owning the value isn't necessary", - ), - ); - } - let place = &self.move_data.move_paths[mpi].place; - let ty = place.ty(self.body, self.infcx.tcx).ty; - if let hir::Node::Expr(parent_expr) = parent - && let hir::ExprKind::Call(call_expr, _) = parent_expr.kind - && let hir::ExprKind::Path(hir::QPath::LangItem( - LangItem::IntoIterIntoIter, - _, - )) = call_expr.kind - { - // Do not suggest `.clone()` in a `for` loop, we already suggest borrowing. - } else if let UseSpans::FnSelfUse { kind: CallKind::Normal { .. }, .. } = - move_spans - { - // We already suggest cloning for these cases in `explain_captures`. - } else { - self.suggest_cloning(err, ty, expr, move_span); - } + ), + ); + } + let place = &self.move_data.move_paths[mpi].place; + let ty = place.ty(self.body, self.infcx.tcx).ty; + if let hir::Node::Expr(parent_expr) = parent + && let hir::ExprKind::Call(call_expr, _) = parent_expr.kind + && let hir::ExprKind::Path(hir::QPath::LangItem(LangItem::IntoIterIntoIter, _)) = + call_expr.kind + { + // Do not suggest `.clone()` in a `for` loop, we already suggest borrowing. + } else if let UseSpans::FnSelfUse { kind: CallKind::Normal { .. }, .. } = move_spans + { + // We already suggest cloning for these cases in `explain_captures`. + } else { + self.suggest_cloning(err, ty, expr, move_span); } } if let Some(pat) = finder.pat { @@ -1759,7 +1753,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { fn_decl: hir::FnDecl { inputs, .. }, .. }) = e.kind - && let Some(hir::Node::Expr(body)) = self.tcx.opt_hir_node(body.hir_id) + && let hir::Node::Expr(body) = self.tcx.hir_node(body.hir_id) { self.suggest_arg = "this: &Self".to_string(); if inputs.len() > 0 { @@ -1825,11 +1819,11 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { } } - if let Some(hir::Node::ImplItem(hir::ImplItem { + if let hir::Node::ImplItem(hir::ImplItem { kind: hir::ImplItemKind::Fn(_fn_sig, body_id), .. - })) = self.infcx.tcx.opt_hir_node(self.mir_hir_id()) - && let Some(hir::Node::Expr(expr)) = self.infcx.tcx.opt_hir_node(body_id.hir_id) + }) = self.infcx.tcx.hir_node(self.mir_hir_id()) + && let hir::Node::Expr(expr) = self.infcx.tcx.hir_node(body_id.hir_id) { let mut finder = ExpressionFinder { capture_span: *capture_kind_span, @@ -2397,8 +2391,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { let proper_span = proper_span.source_callsite(); if let Some(scope) = self.body.source_scopes.get(source_info.scope) && let ClearCrossCrate::Set(scope_data) = &scope.local_data - && let Some(node) = self.infcx.tcx.opt_hir_node(scope_data.lint_root) - && let Some(id) = node.body_id() + && let Some(id) = self.infcx.tcx.hir_node(scope_data.lint_root).body_id() && let hir::ExprKind::Block(block, _) = self.infcx.tcx.hir().body(id).value.kind { for stmt in block.stmts { diff --git a/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs b/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs index 4f66468a865f8..716d30c5a485d 100644 --- a/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs +++ b/compiler/rustc_borrowck/src/diagnostics/explain_borrow.rs @@ -87,7 +87,7 @@ impl<'tcx> BorrowExplanation<'tcx> { if let hir::ExprKind::Path(hir::QPath::Resolved(None, p)) = expr.kind && let [hir::PathSegment { ident, args: None, .. }] = p.segments && let hir::def::Res::Local(hir_id) = p.res - && let Some(hir::Node::Pat(pat)) = tcx.opt_hir_node(hir_id) + && let hir::Node::Pat(pat) = tcx.hir_node(hir_id) { err.span_label(pat.span, format!("binding `{ident}` declared here")); } diff --git a/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs b/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs index 0a6b758efa564..04ac9cd4c4fa9 100644 --- a/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs +++ b/compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs @@ -396,7 +396,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> { let upvar_hir_id = captured_place.get_root_variable(); - if let Some(Node::Pat(pat)) = self.infcx.tcx.opt_hir_node(upvar_hir_id) + if let Node::Pat(pat) = self.infcx.tcx.hir_node(upvar_hir_id) && let hir::PatKind::Binding(hir::BindingAnnotation::NONE, _, upvar_ident, _) = pat.kind { @@ -688,15 +688,15 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> { break; } f_in_trait_opt.and_then(|f_in_trait| { - match self.infcx.tcx.opt_hir_node(f_in_trait) { - Some(Node::TraitItem(hir::TraitItem { + match self.infcx.tcx.hir_node(f_in_trait) { + Node::TraitItem(hir::TraitItem { kind: hir::TraitItemKind::Fn( hir::FnSig { decl: hir::FnDecl { inputs, .. }, .. }, _, ), .. - })) => { + }) => { let hir::Ty { span, .. } = inputs[local.index() - 1]; Some(span) } @@ -759,10 +759,10 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> { // // `let &b = a;` -> `let &(mut b) = a;` if let Some(hir_id) = hir_id - && let Some(hir::Node::Local(hir::Local { + && let hir::Node::Local(hir::Local { pat: hir::Pat { kind: hir::PatKind::Ref(_, _), .. }, .. - })) = self.infcx.tcx.opt_hir_node(hir_id) + }) = self.infcx.tcx.hir_node(hir_id) && let Ok(name) = self.infcx.tcx.sess.source_map().span_to_snippet(local_decl.source_info.span) { @@ -1206,7 +1206,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> { }; if let Some(hir_id) = hir_id - && let Some(hir::Node::Local(local)) = self.infcx.tcx.opt_hir_node(hir_id) + && let hir::Node::Local(local) = self.infcx.tcx.hir_node(hir_id) { let tables = self.infcx.tcx.typeck(def_id.as_local().unwrap()); if let Some(clone_trait) = self.infcx.tcx.lang_items().clone_trait() diff --git a/compiler/rustc_hir/src/intravisit.rs b/compiler/rustc_hir/src/intravisit.rs index 27c834d848fc4..574b372be2ba5 100644 --- a/compiler/rustc_hir/src/intravisit.rs +++ b/compiler/rustc_hir/src/intravisit.rs @@ -108,8 +108,8 @@ impl<'a> FnKind<'a> { /// An abstract representation of the HIR `rustc_middle::hir::map::Map`. pub trait Map<'hir> { - /// Retrieves the `Node` corresponding to `id`, returning `None` if cannot be found. - fn find(&self, hir_id: HirId) -> Option>; + /// Retrieves the `Node` corresponding to `id`. + fn hir_node(&self, hir_id: HirId) -> Node<'hir>; fn body(&self, id: BodyId) -> &'hir Body<'hir>; fn item(&self, id: ItemId) -> &'hir Item<'hir>; fn trait_item(&self, id: TraitItemId) -> &'hir TraitItem<'hir>; @@ -119,7 +119,7 @@ pub trait Map<'hir> { // Used when no map is actually available, forcing manual implementation of nested visitors. impl<'hir> Map<'hir> for ! { - fn find(&self, _: HirId) -> Option> { + fn hir_node(&self, _: HirId) -> Node<'hir> { *self; } fn body(&self, _: BodyId) -> &'hir Body<'hir> { diff --git a/compiler/rustc_hir_analysis/src/check/entry.rs b/compiler/rustc_hir_analysis/src/check/entry.rs index 649ac6c5aebbf..3d803258c8e5e 100644 --- a/compiler/rustc_hir_analysis/src/check/entry.rs +++ b/compiler/rustc_hir_analysis/src/check/entry.rs @@ -43,8 +43,8 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { return None; } let hir_id = tcx.local_def_id_to_hir_id(def_id.expect_local()); - match tcx.opt_hir_node(hir_id) { - Some(Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, generics, _), .. })) => { + match tcx.hir_node(hir_id) { + Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, generics, _), .. }) => { generics.params.is_empty().not().then_some(generics.span) } _ => { @@ -58,8 +58,8 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { return None; } let hir_id = tcx.local_def_id_to_hir_id(def_id.expect_local()); - match tcx.opt_hir_node(hir_id) { - Some(Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, generics, _), .. })) => { + match tcx.hir_node(hir_id) { + Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, generics, _), .. }) => { Some(generics.where_clause_span) } _ => { @@ -80,8 +80,8 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) { return None; } let hir_id = tcx.local_def_id_to_hir_id(def_id.expect_local()); - match tcx.opt_hir_node(hir_id) { - Some(Node::Item(hir::Item { kind: hir::ItemKind::Fn(fn_sig, _, _), .. })) => { + match tcx.hir_node(hir_id) { + Node::Item(hir::Item { kind: hir::ItemKind::Fn(fn_sig, _, _), .. }) => { Some(fn_sig.decl.output.span()) } _ => { @@ -202,7 +202,7 @@ fn check_start_fn_ty(tcx: TyCtxt<'_>, start_def_id: DefId) { let start_t = tcx.type_of(start_def_id).instantiate_identity(); match start_t.kind() { ty::FnDef(..) => { - if let Some(Node::Item(it)) = tcx.opt_hir_node(start_id) { + if let Node::Item(it) = tcx.hir_node(start_id) { if let hir::ItemKind::Fn(sig, generics, _) = &it.kind { let mut error = false; if !generics.params.is_empty() { diff --git a/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs b/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs index 501915d2e7e53..3b1ee2975fd97 100644 --- a/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs +++ b/compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs @@ -771,8 +771,7 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> { ); if let Some(parent_node) = self.tcx.hir().opt_parent_id(self.path_segment.hir_id) - && let Some(parent_node) = self.tcx.opt_hir_node(parent_node) - && let hir::Node::Expr(expr) = parent_node + && let hir::Node::Expr(expr) = self.tcx.hir_node(parent_node) { match &expr.kind { hir::ExprKind::Path(qpath) => self diff --git a/compiler/rustc_hir_pretty/src/lib.rs b/compiler/rustc_hir_pretty/src/lib.rs index 95f8a754664b7..32d91b596b0bd 100644 --- a/compiler/rustc_hir_pretty/src/lib.rs +++ b/compiler/rustc_hir_pretty/src/lib.rs @@ -23,7 +23,7 @@ use std::cell::Cell; use std::vec; pub fn id_to_string(map: &dyn rustc_hir::intravisit::Map<'_>, hir_id: hir::HirId) -> String { - to_string(&map, |s| s.print_node(map.find(hir_id).unwrap())) + to_string(&map, |s| s.print_node(map.hir_node(hir_id))) } pub enum AnnNode<'a> { diff --git a/compiler/rustc_hir_typeck/src/coercion.rs b/compiler/rustc_hir_typeck/src/coercion.rs index ca636ebcade04..2beabc0835db1 100644 --- a/compiler/rustc_hir_typeck/src/coercion.rs +++ b/compiler/rustc_hir_typeck/src/coercion.rs @@ -1715,8 +1715,8 @@ impl<'tcx, 'exprs, E: AsCoercionSite> CoerceMany<'tcx, 'exprs, E> { let ret_msg = "return a value for the case when the loop has zero elements to iterate on"; let ret_ty_msg = "otherwise consider changing the return type to account for that possibility"; - if let Some(node) = tcx.opt_hir_node(item.into()) - && let Some(body_id) = node.body_id() + let node = tcx.hir_node(item.into()); + if let Some(body_id) = node.body_id() && let Some(sig) = node.fn_sig() && let hir::ExprKind::Block(block, _) = hir.body(body_id).value.kind && !ty.is_never() diff --git a/compiler/rustc_hir_typeck/src/demand.rs b/compiler/rustc_hir_typeck/src/demand.rs index b6dfc34d3ac19..d8974251de040 100644 --- a/compiler/rustc_hir_typeck/src/demand.rs +++ b/compiler/rustc_hir_typeck/src/demand.rs @@ -561,11 +561,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let mut parent; 'outer: loop { // Climb the HIR tree to see if the current `Expr` is part of a `break;` statement. - let Some( - hir::Node::Stmt(hir::Stmt { kind: hir::StmtKind::Semi(&ref p), .. }) - | hir::Node::Block(hir::Block { expr: Some(&ref p), .. }) - | hir::Node::Expr(&ref p), - ) = self.tcx.opt_hir_node(parent_id) + let (hir::Node::Stmt(hir::Stmt { kind: hir::StmtKind::Semi(&ref p), .. }) + | hir::Node::Block(hir::Block { expr: Some(&ref p), .. }) + | hir::Node::Expr(&ref p)) = self.tcx.hir_node(parent_id) else { break; }; @@ -578,20 +576,20 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let mut direct = false; loop { // Climb the HIR tree to find the (desugared) `loop` this `break` corresponds to. - let parent = match self.tcx.opt_hir_node(parent_id) { - Some(hir::Node::Expr(&ref parent)) => { + let parent = match self.tcx.hir_node(parent_id) { + hir::Node::Expr(&ref parent) => { parent_id = self.tcx.hir().parent_id(parent.hir_id); parent } - Some(hir::Node::Stmt(hir::Stmt { + hir::Node::Stmt(hir::Stmt { hir_id, kind: hir::StmtKind::Semi(&ref parent) | hir::StmtKind::Expr(&ref parent), .. - })) => { + }) => { parent_id = self.tcx.hir().parent_id(*hir_id); parent } - Some(hir::Node::Block(_)) => { + hir::Node::Block(_) => { parent_id = self.tcx.hir().parent_id(parent_id); parent } @@ -680,17 +678,15 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { error: Option>, ) { let parent = self.tcx.hir().parent_id(expr.hir_id); - match (self.tcx.opt_hir_node(parent), error) { - (Some(hir::Node::Local(hir::Local { ty: Some(ty), init: Some(init), .. })), _) + match (self.tcx.hir_node(parent), error) { + (hir::Node::Local(hir::Local { ty: Some(ty), init: Some(init), .. }), _) if init.hir_id == expr.hir_id => { // Point at `let` assignment type. err.span_label(ty.span, "expected due to this"); } ( - Some(hir::Node::Expr(hir::Expr { - kind: hir::ExprKind::Assign(lhs, rhs, _), .. - })), + hir::Node::Expr(hir::Expr { kind: hir::ExprKind::Assign(lhs, rhs, _), .. }), Some(TypeError::Sorts(ExpectedFound { expected, .. })), ) if rhs.hir_id == expr.hir_id && !expected.is_closure() => { // We ignore closures explicitly because we already point at them elsewhere. @@ -725,7 +721,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { None, hir::Path { res: hir::def::Res::Local(hir_id), .. }, )) => { - if let Some(hir::Node::Pat(pat)) = self.tcx.opt_hir_node(*hir_id) { + if let hir::Node::Pat(pat) = self.tcx.hir_node(*hir_id) { primary_span = pat.span; secondary_span = pat.span; match self.tcx.hir().find_parent(pat.hir_id) { @@ -774,9 +770,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { } } ( - Some(hir::Node::Expr(hir::Expr { - kind: hir::ExprKind::Binary(_, lhs, rhs), .. - })), + hir::Node::Expr(hir::Expr { kind: hir::ExprKind::Binary(_, lhs, rhs), .. }), Some(TypeError::Sorts(ExpectedFound { expected, .. })), ) if rhs.hir_id == expr.hir_id && self.typeck_results.borrow().expr_ty_adjusted_opt(lhs) == Some(expected) => @@ -797,8 +791,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let Some(TypeError::Sorts(ExpectedFound { expected, .. })) = error else { return; }; - let Some(hir::Node::Expr(hir::Expr { kind: hir::ExprKind::Assign(lhs, rhs, _), .. })) = - self.tcx.opt_hir_node(parent) + let hir::Node::Expr(hir::Expr { kind: hir::ExprKind::Assign(lhs, rhs, _), .. }) = + self.tcx.hir_node(parent) else { return; }; @@ -1022,13 +1016,12 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { hir::Path { res: hir::def::Res::Local(bind_hir_id), .. }, )) = expr.kind { - let bind = self.tcx.opt_hir_node(*bind_hir_id); - let parent = self.tcx.opt_hir_node(self.tcx.hir().parent_id(*bind_hir_id)); - if let Some(hir::Node::Pat(hir::Pat { - kind: hir::PatKind::Binding(_, _hir_id, _, _), - .. - })) = bind - && let Some(hir::Node::Pat(hir::Pat { default_binding_modes: false, .. })) = parent + let bind = self.tcx.hir_node(*bind_hir_id); + let parent = self.tcx.hir_node(self.tcx.hir().parent_id(*bind_hir_id)); + if let hir::Node::Pat(hir::Pat { + kind: hir::PatKind::Binding(_, _hir_id, _, _), .. + }) = bind + && let hir::Node::Pat(hir::Pat { default_binding_modes: false, .. }) = parent { return true; } diff --git a/compiler/rustc_hir_typeck/src/expr.rs b/compiler/rustc_hir_typeck/src/expr.rs index 2bbef11fa2450..aeb849527278a 100644 --- a/compiler/rustc_hir_typeck/src/expr.rs +++ b/compiler/rustc_hir_typeck/src/expr.rs @@ -1017,7 +1017,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { then: impl FnOnce(&hir::Expr<'_>), ) { let mut parent = self.tcx.hir().parent_id(original_expr_id); - while let Some(node) = self.tcx.opt_hir_node(parent) { + loop { + let node = self.tcx.hir_node(parent); match node { hir::Node::Expr(hir::Expr { kind: @@ -1471,8 +1472,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { }; if let hir::TyKind::Array(_, length) = ty.peel_refs().kind && let hir::ArrayLen::Body(hir::AnonConst { hir_id, .. }) = length - && let Some(span) = self.tcx.hir().opt_span(hir_id) { + let span = self.tcx.hir().span(hir_id); match self.dcx().steal_diagnostic(span, StashKey::UnderscoreForArrayLengths) { Some(mut err) => { err.span_suggestion( diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs index d30c7a4fb3899..35b3f27d79127 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs @@ -2060,7 +2060,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let node = self .tcx .opt_local_def_id_to_hir_id(self.tcx.hir().get_parent_item(call_expr.hir_id)) - .and_then(|hir_id| self.tcx.opt_hir_node(hir_id)); + .map(|hir_id| self.tcx.hir_node(hir_id)); match node { Some(hir::Node::Item(item)) => call_finder.visit_item(item), Some(hir::Node::TraitItem(item)) => call_finder.visit_trait_item(item), diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs index a83bd715849fc..af3e0aaa05d5b 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs @@ -680,8 +680,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // is and we were expecting a Box, ergo Pin>, we // can suggest Box::pin. let parent = self.tcx.hir().parent_id(expr.hir_id); - let Some(Node::Expr(Expr { kind: ExprKind::Call(fn_name, _), .. })) = - self.tcx.opt_hir_node(parent) + let Node::Expr(Expr { kind: ExprKind::Call(fn_name, _), .. }) = + self.tcx.hir_node(parent) else { return false; }; @@ -906,9 +906,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let ty::Param(expected_ty_as_param) = expected.kind() else { return }; - let fn_node = self.tcx.opt_hir_node(fn_id); + let fn_node = self.tcx.hir_node(fn_id); - let Some(hir::Node::Item(hir::Item { + let hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn( hir::FnSig { @@ -919,7 +919,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { _body_id, ), .. - })) = fn_node + }) = fn_node else { return; }; @@ -1051,8 +1051,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { }; let ty = self.normalize(expr.span, ty); if self.can_coerce(found, ty) { - if let Some(node) = self.tcx.opt_hir_node(fn_id) - && let Some(owner_node) = node.as_owner() + if let Some(owner_node) = self.tcx.hir_node(fn_id).as_owner() && let Some(span) = expr.span.find_ancestor_inside(*owner_node.span()) { err.multipart_suggestion( @@ -1682,15 +1681,11 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { None, hir::Path { segments: [_], res: crate::Res::Local(binding), .. }, )) => { - let Some(hir::Node::Pat(hir::Pat { hir_id, .. })) = self.tcx.opt_hir_node(*binding) - else { - return expr; - }; - let Some(parent) = self.tcx.opt_hir_node(self.tcx.hir().parent_id(*hir_id)) else { + let hir::Node::Pat(hir::Pat { hir_id, .. }) = self.tcx.hir_node(*binding) else { return expr; }; - match parent { + match self.tcx.hir_node(self.tcx.hir().parent_id(*hir_id)) { // foo.clone() hir::Node::Local(hir::Local { init: Some(init), .. }) => { self.note_type_is_not_clone_inner_expr(init) @@ -1701,8 +1696,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { kind: hir::PatKind::Tuple(pats, ..), .. }) => { - let Some(hir::Node::Local(hir::Local { init: Some(init), .. })) = - self.tcx.opt_hir_node(self.tcx.hir().parent_id(*pat_hir_id)) + let hir::Node::Local(hir::Local { init: Some(init), .. }) = + self.tcx.hir_node(self.tcx.hir().parent_id(*pat_hir_id)) else { return expr; }; @@ -1734,10 +1729,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { call_expr_kind && let hir::Path { segments: [_], res: crate::Res::Local(binding), .. } = call_expr_path - && let Some(hir::Node::Pat(hir::Pat { hir_id, .. })) = - self.tcx.opt_hir_node(*binding) - && let Some(closure) = self.tcx.opt_hir_node(self.tcx.hir().parent_id(*hir_id)) - && let hir::Node::Local(hir::Local { init: Some(init), .. }) = closure + && let hir::Node::Pat(hir::Pat { hir_id, .. }) = self.tcx.hir_node(*binding) + && let hir::Node::Local(hir::Local { init: Some(init), .. }) = + self.tcx.hir_node(self.tcx.hir().parent_id(*hir_id)) && let Expr { kind: hir::ExprKind::Closure(hir::Closure { body: body_id, .. }), .. @@ -1977,20 +1971,18 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // Unroll desugaring, to make sure this works for `for` loops etc. loop { parent = self.tcx.hir().parent_id(id); - if let Some(parent_span) = self.tcx.hir().opt_span(parent) { - if parent_span.find_ancestor_inside(expr.span).is_some() { - // The parent node is part of the same span, so is the result of the - // same expansion/desugaring and not the 'real' parent node. - id = parent; - continue; - } + let parent_span = self.tcx.hir().span(parent); + if parent_span.find_ancestor_inside(expr.span).is_some() { + // The parent node is part of the same span, so is the result of the + // same expansion/desugaring and not the 'real' parent node. + id = parent; + continue; } break; } - if let Some(hir::Node::Block(&hir::Block { - span: block_span, expr: Some(e), .. - })) = self.tcx.opt_hir_node(parent) + if let hir::Node::Block(&hir::Block { span: block_span, expr: Some(e), .. }) = + self.tcx.hir_node(parent) { if e.hir_id == id { if let Some(span) = expr.span.find_ancestor_inside(block_span) { @@ -2218,30 +2210,29 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { }; let local_parent = self.tcx.hir().parent_id(local_id); - let Some(Node::Param(hir::Param { hir_id: param_hir_id, .. })) = - self.tcx.opt_hir_node(local_parent) + let Node::Param(hir::Param { hir_id: param_hir_id, .. }) = self.tcx.hir_node(local_parent) else { return None; }; let param_parent = self.tcx.hir().parent_id(*param_hir_id); - let Some(Node::Expr(hir::Expr { + let Node::Expr(hir::Expr { hir_id: expr_hir_id, kind: hir::ExprKind::Closure(hir::Closure { fn_decl: closure_fn_decl, .. }), .. - })) = self.tcx.opt_hir_node(param_parent) + }) = self.tcx.hir_node(param_parent) else { return None; }; let expr_parent = self.tcx.hir().parent_id(*expr_hir_id); - let hir = self.tcx.opt_hir_node(expr_parent); + let hir = self.tcx.hir_node(expr_parent); let closure_params_len = closure_fn_decl.inputs.len(); let ( - Some(Node::Expr(hir::Expr { + Node::Expr(hir::Expr { kind: hir::ExprKind::MethodCall(method_path, receiver, ..), .. - })), + }), 1, ) = (hir, closure_params_len) else { @@ -2672,10 +2663,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { fn is_else_if_block(&self, expr: &hir::Expr<'_>) -> bool { if let hir::ExprKind::If(..) = expr.kind { let parent_id = self.tcx.hir().parent_id(expr.hir_id); - if let Some(Node::Expr(hir::Expr { - kind: hir::ExprKind::If(_, _, Some(else_expr)), - .. - })) = self.tcx.opt_hir_node(parent_id) + if let Node::Expr(hir::Expr { + kind: hir::ExprKind::If(_, _, Some(else_expr)), .. + }) = self.tcx.hir_node(parent_id) { return else_expr.hir_id == expr.hir_id; } @@ -3065,7 +3055,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { return; }; let parent = self.tcx.hir().parent_id(expr.hir_id); - if let Some(hir::Node::ExprField(_)) = self.tcx.opt_hir_node(parent) { + if let hir::Node::ExprField(_) = self.tcx.hir_node(parent) { // Ignore `Foo { field: a..Default::default() }` return; } @@ -3144,7 +3134,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let hir::def::Res::Local(hir_id) = path.res else { return; }; - let Some(hir::Node::Pat(pat)) = self.tcx.opt_hir_node(hir_id) else { + let hir::Node::Pat(pat) = self.tcx.hir_node(hir_id) else { return; }; let Some(hir::Node::Local(hir::Local { ty: None, init: Some(init), .. })) = diff --git a/compiler/rustc_hir_typeck/src/method/suggest.rs b/compiler/rustc_hir_typeck/src/method/suggest.rs index 6c9501e93fa11..007b26119f6da 100644 --- a/compiler/rustc_hir_typeck/src/method/suggest.rs +++ b/compiler/rustc_hir_typeck/src/method/suggest.rs @@ -229,7 +229,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { } if let hir::ExprKind::Path(hir::QPath::Resolved(None, path)) = kind && let hir::def::Res::Local(hir_id) = path.res - && let Some(hir::Node::Pat(b)) = self.tcx.opt_hir_node(hir_id) + && let hir::Node::Pat(b) = self.tcx.hir_node(hir_id) && let Some(hir::Node::Param(p)) = self.tcx.hir().find_parent(b.hir_id) && let Some(node) = self.tcx.hir().find_parent(p.hir_id) && let Some(decl) = node.fn_decl() @@ -2003,7 +2003,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { visitor.visit_body(body); let parent = self.tcx.hir().parent_id(seg1.hir_id); - if let Some(Node::Expr(call_expr)) = self.tcx.opt_hir_node(parent) + if let Node::Expr(call_expr) = self.tcx.hir_node(parent) && let Some(expr) = visitor.result && let Some(self_ty) = self.node_ty_opt(expr.hir_id) { @@ -3253,7 +3253,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { } let parent = self.tcx.hir().parent_id(expr.hir_id); - if let Some(Node::Expr(call_expr)) = self.tcx.opt_hir_node(parent) + if let Node::Expr(call_expr) = self.tcx.hir_node(parent) && let hir::ExprKind::MethodCall( hir::PathSegment { ident: method_name, .. }, self_expr, diff --git a/compiler/rustc_hir_typeck/src/rvalue_scopes.rs b/compiler/rustc_hir_typeck/src/rvalue_scopes.rs index b9b3ed53dae8f..34ce0ab1f8b98 100644 --- a/compiler/rustc_hir_typeck/src/rvalue_scopes.rs +++ b/compiler/rustc_hir_typeck/src/rvalue_scopes.rs @@ -73,9 +73,7 @@ pub fn resolve_rvalue_scopes<'a, 'tcx>( debug!("start resolving rvalue scopes, def_id={def_id:?}"); debug!("rvalue_scope: rvalue_candidates={:?}", scope_tree.rvalue_candidates); for (&hir_id, candidate) in &scope_tree.rvalue_candidates { - let Some(Node::Expr(expr)) = tcx.opt_hir_node(hir_id) else { - bug!("hir node does not exist") - }; + let Node::Expr(expr) = tcx.hir_node(hir_id) else { bug!("hir node does not exist") }; record_rvalue_scope(&mut rvalue_scopes, expr, candidate); } rvalue_scopes diff --git a/compiler/rustc_hir_typeck/src/upvar.rs b/compiler/rustc_hir_typeck/src/upvar.rs index 82c5e566f161c..e480d6aa83bfd 100644 --- a/compiler/rustc_hir_typeck/src/upvar.rs +++ b/compiler/rustc_hir_typeck/src/upvar.rs @@ -840,9 +840,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { if let Ok(mut s) = self.tcx.sess.source_map().span_to_snippet(closure_body_span) { if s.starts_with('$') { // Looks like a macro fragment. Try to find the real block. - if let Some(hir::Node::Expr(&hir::Expr { + if let hir::Node::Expr(&hir::Expr { kind: hir::ExprKind::Block(block, ..), .. - })) = self.tcx.opt_hir_node(body_id.hir_id) { + }) = self.tcx.hir_node(body_id.hir_id) { // If the body is a block (with `{..}`), we use the span of that block. // E.g. with a `|| $body` expanded from a `m!({ .. })`, we use `{ .. }`, and not `$body`. // Since we know it's a block, we know we can insert the `let _ = ..` without diff --git a/compiler/rustc_infer/src/infer/error_reporting/mod.rs b/compiler/rustc_infer/src/infer/error_reporting/mod.rs index b8344310d5dfd..399c8cc2836ea 100644 --- a/compiler/rustc_infer/src/infer/error_reporting/mod.rs +++ b/compiler/rustc_infer/src/infer/error_reporting/mod.rs @@ -2179,8 +2179,8 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { if let Some(tykind) = tykind && let hir::TyKind::Array(_, length) = tykind && let hir::ArrayLen::Body(hir::AnonConst { hir_id, .. }) = length - && let Some(span) = self.tcx.hir().opt_span(*hir_id) { + let span = self.tcx.hir().span(*hir_id); Some(TypeErrorAdditionalDiags::ConsiderSpecifyingLength { span, length: sz.found }) } else { None diff --git a/compiler/rustc_infer/src/infer/opaque_types.rs b/compiler/rustc_infer/src/infer/opaque_types.rs index db46b39ce25fc..a89c4a99f6311 100644 --- a/compiler/rustc_infer/src/infer/opaque_types.rs +++ b/compiler/rustc_infer/src/infer/opaque_types.rs @@ -676,7 +676,7 @@ fn may_define_opaque_type(tcx: TyCtxt<'_>, def_id: LocalDefId, opaque_hir_id: hi let res = hir_id == scope; trace!( "may_define_opaque_type(def={:?}, opaque_node={:?}) = {}", - tcx.opt_hir_node(hir_id), + tcx.hir_node(hir_id), tcx.hir_node(opaque_hir_id), res ); diff --git a/compiler/rustc_infer/src/traits/error_reporting/mod.rs b/compiler/rustc_infer/src/traits/error_reporting/mod.rs index eabc1b953af1c..ed551658d91a9 100644 --- a/compiler/rustc_infer/src/traits/error_reporting/mod.rs +++ b/compiler/rustc_infer/src/traits/error_reporting/mod.rs @@ -5,7 +5,6 @@ use rustc_data_structures::fx::FxIndexSet; use rustc_errors::{codes::*, struct_span_code_err, Applicability, DiagnosticBuilder, MultiSpan}; use rustc_hir as hir; use rustc_hir::def_id::{DefId, LocalDefId}; -use rustc_hir::intravisit::Map; use rustc_middle::ty::print::with_no_trimmed_paths; use rustc_middle::ty::{self, TyCtxt}; use rustc_span::Span; @@ -62,7 +61,7 @@ pub fn report_object_safety_error<'tcx>( err.span_label(span, format!("`{trait_str}` cannot be made into an object")); if let Some(hir_id) = hir_id - && let Some(hir::Node::Ty(ty)) = tcx.hir().find(hir_id) + && let hir::Node::Ty(ty) = tcx.hir_node(hir_id) && let hir::TyKind::TraitObject([trait_ref, ..], ..) = ty.kind { let mut hir_id = hir_id; diff --git a/compiler/rustc_middle/src/hir/map/mod.rs b/compiler/rustc_middle/src/hir/map/mod.rs index 64e19e0946fd0..dea61faef4af3 100644 --- a/compiler/rustc_middle/src/hir/map/mod.rs +++ b/compiler/rustc_middle/src/hir/map/mod.rs @@ -157,21 +157,15 @@ impl<'tcx> TyCtxt<'tcx> { self.hir_owner_nodes(owner_id).node() } - /// Retrieves the `hir::Node` corresponding to `id`, returning `None` if cannot be found. - pub fn opt_hir_node(self, id: HirId) -> Option> { - Some(self.hir_owner_nodes(id.owner).nodes[id.local_id].node) - } - /// Retrieves the `hir::Node` corresponding to `id`, returning `None` if cannot be found. #[inline] pub fn opt_hir_node_by_def_id(self, id: LocalDefId) -> Option> { - self.opt_hir_node(self.opt_local_def_id_to_hir_id(id)?) + Some(self.hir_node(self.opt_local_def_id_to_hir_id(id)?)) } - /// Retrieves the `hir::Node` corresponding to `id`, panicking if it cannot be found. - #[track_caller] + /// Retrieves the `hir::Node` corresponding to `id`. pub fn hir_node(self, id: HirId) -> Node<'tcx> { - self.opt_hir_node(id).unwrap_or_else(|| bug!("couldn't find HIR node for hir id {id:?}")) + self.hir_owner_nodes(id.owner).nodes[id.local_id].node } /// Retrieves the `hir::Node` corresponding to `id`, panicking if it cannot be found. @@ -250,11 +244,12 @@ impl<'hir> Map<'hir> { } pub fn find_parent(self, hir_id: HirId) -> Option> { - self.tcx.opt_hir_node(self.opt_parent_id(hir_id)?) + Some(self.tcx.hir_node(self.opt_parent_id(hir_id)?)) } pub fn get_if_local(self, id: DefId) -> Option> { - id.as_local().and_then(|id| self.tcx.opt_hir_node(self.tcx.opt_local_def_id_to_hir_id(id)?)) + id.as_local() + .and_then(|id| Some(self.tcx.hir_node(self.tcx.opt_local_def_id_to_hir_id(id)?))) } pub fn get_generics(self, id: LocalDefId) -> Option<&'hir Generics<'hir>> { @@ -283,20 +278,12 @@ impl<'hir> Map<'hir> { #[track_caller] pub fn fn_decl_by_hir_id(self, hir_id: HirId) -> Option<&'hir FnDecl<'hir>> { - if let Some(node) = self.tcx.opt_hir_node(hir_id) { - node.fn_decl() - } else { - bug!("no node for hir_id `{}`", hir_id) - } + self.tcx.hir_node(hir_id).fn_decl() } #[track_caller] pub fn fn_sig_by_hir_id(self, hir_id: HirId) -> Option<&'hir FnSig<'hir>> { - if let Some(node) = self.tcx.opt_hir_node(hir_id) { - node.fn_sig() - } else { - bug!("no node for hir_id `{}`", hir_id) - } + self.tcx.hir_node(hir_id).fn_sig() } #[track_caller] @@ -315,10 +302,7 @@ impl<'hir> Map<'hir> { /// item (possibly associated), a closure, or a `hir::AnonConst`. pub fn body_owner(self, BodyId { hir_id }: BodyId) -> HirId { let parent = self.parent_id(hir_id); - assert!( - self.tcx.opt_hir_node(parent).is_some_and(|n| is_body_owner(n, hir_id)), - "{hir_id:?}" - ); + assert!(is_body_owner(self.tcx.hir_node(parent), hir_id), "{hir_id:?}"); parent } @@ -570,7 +554,7 @@ impl<'hir> Map<'hir> { /// until the crate root is reached. Prefer this over your own loop using `parent_id`. #[inline] pub fn parent_iter(self, current_id: HirId) -> impl Iterator)> { - self.parent_id_iter(current_id).filter_map(move |id| Some((id, self.tcx.opt_hir_node(id)?))) + self.parent_id_iter(current_id).map(move |id| (id, self.tcx.hir_node(id))) } /// Returns an iterator for the nodes in the ancestor tree of the `current_id` @@ -622,7 +606,7 @@ impl<'hir> Map<'hir> { pub fn get_return_block(self, id: HirId) -> Option { let mut iter = self.parent_iter(id).peekable(); let mut ignore_tail = false; - if let Some(Node::Expr(Expr { kind: ExprKind::Ret(_), .. })) = self.tcx.opt_hir_node(id) { + if let Node::Expr(Expr { kind: ExprKind::Ret(_), .. }) = self.tcx.hir_node(id) { // When dealing with `return` statements, we don't care about climbing only tail // expressions. ignore_tail = true; @@ -775,8 +759,8 @@ impl<'hir> Map<'hir> { } pub fn expect_variant(self, id: HirId) -> &'hir Variant<'hir> { - match self.tcx.opt_hir_node(id) { - Some(Node::Variant(variant)) => variant, + match self.tcx.hir_node(id) { + Node::Variant(variant) => variant, _ => bug!("expected variant, found {}", self.node_to_string(id)), } } @@ -794,18 +778,18 @@ impl<'hir> Map<'hir> { } pub fn expect_expr(self, id: HirId) -> &'hir Expr<'hir> { - match self.tcx.opt_hir_node(id) { - Some(Node::Expr(expr)) => expr, + match self.tcx.hir_node(id) { + Node::Expr(expr) => expr, _ => bug!("expected expr, found {}", self.node_to_string(id)), } } #[inline] fn opt_ident(self, id: HirId) -> Option { - match self.tcx.opt_hir_node(id)? { + match self.tcx.hir_node(id) { Node::Pat(&Pat { kind: PatKind::Binding(_, _, ident, _), .. }) => Some(ident), // A `Ctor` doesn't have an identifier itself, but its parent - // struct/variant does. Compare with `hir::Map::opt_span`. + // struct/variant does. Compare with `hir::Map::span`. Node::Ctor(..) => match self.find_parent(id)? { Node::Item(item) => Some(item.ident), Node::Variant(variant) => Some(variant.ident), @@ -843,11 +827,6 @@ impl<'hir> Map<'hir> { /// Gets the span of the definition of the specified HIR node. /// This is used by `tcx.def_span`. pub fn span(self, hir_id: HirId) -> Span { - self.opt_span(hir_id) - .unwrap_or_else(|| bug!("hir::map::Map::span: id not in map: {:?}", hir_id)) - } - - pub fn opt_span(self, hir_id: HirId) -> Option { fn until_within(outer: Span, end: Span) -> Span { if let Some(end) = end.find_ancestor_inside(outer) { outer.with_hi(end.hi()) @@ -871,7 +850,7 @@ impl<'hir> Map<'hir> { } } - let span = match self.tcx.opt_hir_node(hir_id)? { + let span = match self.tcx.hir_node(hir_id) { // Function-like. Node::Item(Item { kind: ItemKind::Fn(sig, ..), span: outer_span, .. }) | Node::TraitItem(TraitItem { @@ -943,7 +922,7 @@ impl<'hir> Map<'hir> { ForeignItemKind::Fn(decl, _, _) => until_within(item.span, decl.output.span()), _ => named_span(item.span, item.ident, None), }, - Node::Ctor(_) => return self.opt_span(self.parent_id(hir_id)), + Node::Ctor(_) => return self.span(self.parent_id(hir_id)), Node::Expr(Expr { kind: ExprKind::Closure(Closure { fn_decl_span, .. }), span, @@ -955,7 +934,7 @@ impl<'hir> Map<'hir> { _ => self.span_with_body(hir_id), }; debug_assert_eq!(span.ctxt(), self.span_with_body(hir_id).ctxt()); - Some(span) + span } /// Like `hir.span()`, but includes the body of items @@ -1058,8 +1037,8 @@ impl<'hir> Map<'hir> { } impl<'hir> intravisit::Map<'hir> for Map<'hir> { - fn find(&self, hir_id: HirId) -> Option> { - self.tcx.opt_hir_node(hir_id) + fn hir_node(&self, hir_id: HirId) -> Node<'hir> { + self.tcx.hir_node(hir_id) } fn body(&self, id: BodyId) -> &'hir Body<'hir> { @@ -1176,8 +1155,8 @@ fn hir_id_to_string(map: Map<'_>, id: HirId) -> String { let span_str = || map.tcx.sess.source_map().span_to_snippet(map.span(id)).unwrap_or_default(); let node_str = |prefix| format!("{id} ({prefix} `{}`)", span_str()); - match map.tcx.opt_hir_node(id) { - Some(Node::Item(item)) => { + match map.tcx.hir_node(id) { + Node::Item(item) => { let item_str = match item.kind { ItemKind::ExternCrate(..) => "extern crate", ItemKind::Use(..) => "use", @@ -1205,10 +1184,10 @@ fn hir_id_to_string(map: Map<'_>, id: HirId) -> String { }; format!("{id} ({item_str} {})", path_str(item.owner_id.def_id)) } - Some(Node::ForeignItem(item)) => { + Node::ForeignItem(item) => { format!("{id} (foreign item {})", path_str(item.owner_id.def_id)) } - Some(Node::ImplItem(ii)) => { + Node::ImplItem(ii) => { let kind = match ii.kind { ImplItemKind::Const(..) => "assoc const", ImplItemKind::Fn(..) => "method", @@ -1216,7 +1195,7 @@ fn hir_id_to_string(map: Map<'_>, id: HirId) -> String { }; format!("{id} ({kind} `{}` in {})", ii.ident, path_str(ii.owner_id.def_id)) } - Some(Node::TraitItem(ti)) => { + Node::TraitItem(ti) => { let kind = match ti.kind { TraitItemKind::Const(..) => "assoc constant", TraitItemKind::Fn(..) => "trait method", @@ -1225,41 +1204,40 @@ fn hir_id_to_string(map: Map<'_>, id: HirId) -> String { format!("{id} ({kind} `{}` in {})", ti.ident, path_str(ti.owner_id.def_id)) } - Some(Node::Variant(variant)) => { + Node::Variant(variant) => { format!("{id} (variant `{}` in {})", variant.ident, path_str(variant.def_id)) } - Some(Node::Field(field)) => { + Node::Field(field) => { format!("{id} (field `{}` in {})", field.ident, path_str(field.def_id)) } - Some(Node::AnonConst(_)) => node_str("const"), - Some(Node::ConstBlock(_)) => node_str("const"), - Some(Node::Expr(_)) => node_str("expr"), - Some(Node::ExprField(_)) => node_str("expr field"), - Some(Node::Stmt(_)) => node_str("stmt"), - Some(Node::PathSegment(_)) => node_str("path segment"), - Some(Node::Ty(_)) => node_str("type"), - Some(Node::TypeBinding(_)) => node_str("type binding"), - Some(Node::TraitRef(_)) => node_str("trait ref"), - Some(Node::Pat(_)) => node_str("pat"), - Some(Node::PatField(_)) => node_str("pattern field"), - Some(Node::Param(_)) => node_str("param"), - Some(Node::Arm(_)) => node_str("arm"), - Some(Node::Block(_)) => node_str("block"), - Some(Node::Infer(_)) => node_str("infer"), - Some(Node::Local(_)) => node_str("local"), - Some(Node::Ctor(ctor)) => format!( + Node::AnonConst(_) => node_str("const"), + Node::ConstBlock(_) => node_str("const"), + Node::Expr(_) => node_str("expr"), + Node::ExprField(_) => node_str("expr field"), + Node::Stmt(_) => node_str("stmt"), + Node::PathSegment(_) => node_str("path segment"), + Node::Ty(_) => node_str("type"), + Node::TypeBinding(_) => node_str("type binding"), + Node::TraitRef(_) => node_str("trait ref"), + Node::Pat(_) => node_str("pat"), + Node::PatField(_) => node_str("pattern field"), + Node::Param(_) => node_str("param"), + Node::Arm(_) => node_str("arm"), + Node::Block(_) => node_str("block"), + Node::Infer(_) => node_str("infer"), + Node::Local(_) => node_str("local"), + Node::Ctor(ctor) => format!( "{id} (ctor {})", ctor.ctor_def_id().map_or("".into(), |def_id| path_str(def_id)), ), - Some(Node::Lifetime(_)) => node_str("lifetime"), - Some(Node::GenericParam(param)) => { + Node::Lifetime(_) => node_str("lifetime"), + Node::GenericParam(param) => { format!("{id} (generic_param {})", path_str(param.def_id)) } - Some(Node::Crate(..)) => String::from("(root_crate)"), - Some(Node::WhereBoundPredicate(_)) => node_str("where bound predicate"), - Some(Node::ArrayLenInfer(_)) => node_str("array len infer"), - Some(Node::Err(_)) => node_str("error"), - None => format!("{id} (unknown node)"), + Node::Crate(..) => String::from("(root_crate)"), + Node::WhereBoundPredicate(_) => node_str("where bound predicate"), + Node::ArrayLenInfer(_) => node_str("array len infer"), + Node::Err(_) => node_str("error"), } } diff --git a/compiler/rustc_middle/src/hir/mod.rs b/compiler/rustc_middle/src/hir/mod.rs index b54e438f6144d..ff5e0459aad36 100644 --- a/compiler/rustc_middle/src/hir/mod.rs +++ b/compiler/rustc_middle/src/hir/mod.rs @@ -12,7 +12,7 @@ use rustc_data_structures::sync::{try_par_for_each_in, DynSend, DynSync}; use rustc_hir::def::DefKind; use rustc_hir::def_id::{DefId, LocalDefId, LocalModDefId}; use rustc_hir::*; -use rustc_span::{ErrorGuaranteed, ExpnId, DUMMY_SP}; +use rustc_span::{ErrorGuaranteed, ExpnId}; /// Gather the LocalDefId for each item-like within a module, including items contained within /// bodies. The Ids are in visitor order. This is used to partition a pass between modules. @@ -149,10 +149,7 @@ pub fn provide(providers: &mut Providers) { providers.hir_attrs = |tcx, id| { tcx.hir_crate(()).owners[id.def_id].as_owner().map_or(AttributeMap::EMPTY, |o| &o.attrs) }; - providers.def_span = |tcx, def_id| { - let hir_id = tcx.local_def_id_to_hir_id(def_id); - tcx.hir().opt_span(hir_id).unwrap_or(DUMMY_SP) - }; + providers.def_span = |tcx, def_id| tcx.hir().span(tcx.local_def_id_to_hir_id(def_id)); providers.def_ident_span = |tcx, def_id| { let hir_id = tcx.local_def_id_to_hir_id(def_id); tcx.hir().opt_ident_span(hir_id) diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs index 0f0027db01dc2..23a94b1744a46 100644 --- a/compiler/rustc_passes/src/check_attr.rs +++ b/compiler/rustc_passes/src/check_attr.rs @@ -828,10 +828,11 @@ impl<'tcx> CheckAttrVisitor<'tcx> { self.doc_attr_str_error(meta, "keyword"); return false; } - match self.tcx.opt_hir_node(hir_id).and_then(|node| match node { + let item_kind = match self.tcx.hir_node(hir_id) { hir::Node::Item(item) => Some(&item.kind), _ => None, - }) { + }; + match item_kind { Some(ItemKind::Mod(module)) => { if !module.item_ids.is_empty() { self.dcx().emit_err(errors::DocKeywordEmptyMod { span: meta.span() }); @@ -854,10 +855,11 @@ impl<'tcx> CheckAttrVisitor<'tcx> { } fn check_doc_fake_variadic(&self, meta: &NestedMetaItem, hir_id: HirId) -> bool { - match self.tcx.opt_hir_node(hir_id).and_then(|node| match node { + let item_kind = match self.tcx.hir_node(hir_id) { hir::Node::Item(item) => Some(&item.kind), _ => None, - }) { + }; + match item_kind { Some(ItemKind::Impl(i)) => { let is_valid = matches!(&i.self_ty.kind, hir::TyKind::Tup([_])) || if let hir::TyKind::BareFn(bare_fn_ty) = &i.self_ty.kind { @@ -2231,8 +2233,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> { } } else { // special case when `#[macro_export]` is applied to a macro 2.0 - let (macro_definition, _) = - self.tcx.opt_hir_node(hir_id).unwrap().expect_item().expect_macro(); + let (macro_definition, _) = self.tcx.hir_node(hir_id).expect_item().expect_macro(); let is_decl_macro = !macro_definition.macro_rules; if is_decl_macro { diff --git a/compiler/rustc_passes/src/loops.rs b/compiler/rustc_passes/src/loops.rs index 0f8cc583b03cf..e10a22cdf31b9 100644 --- a/compiler/rustc_passes/src/loops.rs +++ b/compiler/rustc_passes/src/loops.rs @@ -134,7 +134,7 @@ impl<'a, 'hir> Visitor<'hir> for CheckLoopVisitor<'a, 'hir> { Err(hir::LoopIdError::UnresolvedLabel) => None, }; - if let Some(Node::Block(_)) = loop_id.and_then(|id| self.tcx.opt_hir_node(id)) { + if let Some(Node::Block(_)) = loop_id.map(|id| self.tcx.hir_node(id)) { return; } @@ -186,7 +186,7 @@ impl<'a, 'hir> Visitor<'hir> for CheckLoopVisitor<'a, 'hir> { match destination.target_id { Ok(loop_id) => { - if let Node::Block(block) = self.tcx.opt_hir_node(loop_id).unwrap() { + if let Node::Block(block) = self.tcx.hir_node(loop_id) { self.sess.dcx().emit_err(ContinueLabeledBlock { span: e.span, block_span: block.span, diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs index 5bab57ca56cb4..d31c01f80429b 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs @@ -19,7 +19,7 @@ use rustc_errors::{ use rustc_hir as hir; use rustc_hir::def::{DefKind, Res}; use rustc_hir::def_id::DefId; -use rustc_hir::intravisit::{Map, Visitor}; +use rustc_hir::intravisit::Visitor; use rustc_hir::is_range_literal; use rustc_hir::lang_items::LangItem; use rustc_hir::{CoroutineDesugaring, CoroutineKind, CoroutineSource, Expr, HirId, Node}; @@ -774,7 +774,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { if steps > 0 { // Don't care about `&mut` because `DerefMut` is used less // often and user will not expect that an autoderef happens. - if let Some(hir::Node::Expr(hir::Expr { + if let hir::Node::Expr(hir::Expr { kind: hir::ExprKind::AddrOf( hir::BorrowKind::Ref, @@ -782,7 +782,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { expr, ), .. - })) = self.tcx.opt_hir_node(*arg_hir_id) + }) = self.tcx.hir_node(*arg_hir_id) { let derefs = "*".repeat(steps); err.span_suggestion_verbose( @@ -1199,7 +1199,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { let Res::Local(hir_id) = path.res else { return; }; - let Some(hir::Node::Pat(pat)) = self.tcx.opt_hir_node(hir_id) else { + let hir::Node::Pat(pat) = self.tcx.hir_node(hir_id) else { return; }; let Some(hir::Node::Local(hir::Local { ty: None, init: Some(init), .. })) = @@ -1786,7 +1786,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { } if let hir::ExprKind::Path(hir::QPath::Resolved(None, path)) = expr.kind && let Res::Local(hir_id) = path.res - && let Some(hir::Node::Pat(binding)) = self.tcx.opt_hir_node(hir_id) + && let hir::Node::Pat(binding) = self.tcx.hir_node(hir_id) && let Some(hir::Node::Local(local)) = self.tcx.hir().find_parent(binding.hir_id) && let None = local.ty && let Some(binding_expr) = local.init @@ -2198,7 +2198,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { let ty::FnPtr(found) = found.kind() else { return; }; - let Some(Node::Expr(arg)) = self.tcx.opt_hir_node(*arg_hir_id) else { + let Node::Expr(arg) = self.tcx.hir_node(*arg_hir_id) else { return; }; let hir::ExprKind::Path(path) = arg.kind else { @@ -3165,8 +3165,8 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { } ObligationCauseCode::VariableType(hir_id) => { let parent_node = tcx.hir().parent_id(hir_id); - match tcx.opt_hir_node(parent_node) { - Some(Node::Local(hir::Local { ty: Some(ty), .. })) => { + match tcx.hir_node(parent_node) { + Node::Local(hir::Local { ty: Some(ty), .. }) => { err.span_suggestion_verbose( ty.span.shrink_to_lo(), "consider borrowing here", @@ -3175,10 +3175,10 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { ); err.note("all local variables must have a statically known size"); } - Some(Node::Local(hir::Local { + Node::Local(hir::Local { init: Some(hir::Expr { kind: hir::ExprKind::Index(..), span, .. }), .. - })) => { + }) => { // When encountering an assignment of an unsized trait, like // `let x = ""[..];`, provide a suggestion to borrow the initializer in // order to use have a slice instead. @@ -3190,7 +3190,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { ); err.note("all local variables must have a statically known size"); } - Some(Node::Param(param)) => { + Node::Param(param) => { err.span_suggestion_verbose( param.ty_span.shrink_to_lo(), "function arguments must have a statically known size, borrowed types \ @@ -3212,7 +3212,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { let borrowed_msg = "function arguments must have a statically known size, borrowed \ types always have a known size"; if let Some(hir_id) = hir_id - && let Some(hir::Node::Param(param)) = self.tcx.hir().find(hir_id) + && let hir::Node::Param(param) = self.tcx.hir_node(hir_id) && let Some(item) = self.tcx.hir().find_parent(hir_id) && let Some(decl) = item.fn_decl() && let Some(t) = decl.inputs.iter().find(|t| param.ty_span.contains(t.span)) @@ -3226,7 +3226,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { // param._ty_span ty = Some(t); } else if let Some(hir_id) = hir_id - && let Some(hir::Node::Ty(t)) = self.tcx.hir().find(hir_id) + && let hir::Node::Ty(t) = self.tcx.hir_node(hir_id) { ty = Some(t); } @@ -3937,7 +3937,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { call_hir_id: HirId, ) { let tcx = self.tcx; - if let Some(Node::Expr(expr)) = tcx.opt_hir_node(arg_hir_id) + if let Node::Expr(expr) = tcx.hir_node(arg_hir_id) && let Some(typeck_results) = &self.typeck_results { if let hir::Expr { kind: hir::ExprKind::Block(block, _), .. } = expr { @@ -4053,9 +4053,9 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { } if let hir::ExprKind::Path(hir::QPath::Resolved(None, path)) = expr.kind && let hir::Path { res: Res::Local(hir_id), .. } = path - && let Some(hir::Node::Pat(binding)) = self.tcx.opt_hir_node(*hir_id) + && let hir::Node::Pat(binding) = self.tcx.hir_node(*hir_id) && let parent_hir_id = self.tcx.hir().parent_id(binding.hir_id) - && let Some(hir::Node::Local(local)) = self.tcx.opt_hir_node(parent_hir_id) + && let hir::Node::Local(local) = self.tcx.hir_node(parent_hir_id) && let Some(binding_expr) = local.init { // If the expression we're calling on is a binding, we want to point at the @@ -4066,17 +4066,16 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { self.point_at_chain(expr, typeck_results, type_diffs, param_env, err); } } - let call_node = tcx.opt_hir_node(call_hir_id); - if let Some(Node::Expr(hir::Expr { - kind: hir::ExprKind::MethodCall(path, rcvr, ..), .. - })) = call_node + let call_node = tcx.hir_node(call_hir_id); + if let Node::Expr(hir::Expr { kind: hir::ExprKind::MethodCall(path, rcvr, ..), .. }) = + call_node { if Some(rcvr.span) == err.span.primary_span() { err.replace_span_with(path.ident.span, true); } } - if let Some(Node::Expr(expr)) = tcx.opt_hir_node(call_hir_id) { + if let Node::Expr(expr) = tcx.hir_node(call_hir_id) { if let hir::ExprKind::Call(hir::Expr { span, .. }, _) | hir::ExprKind::MethodCall( hir::PathSegment { ident: Ident { span, .. }, .. }, @@ -4313,7 +4312,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { if let hir::ExprKind::Path(hir::QPath::Resolved(None, path)) = expr.kind && let hir::Path { res: Res::Local(hir_id), .. } = path - && let Some(hir::Node::Pat(binding)) = self.tcx.opt_hir_node(*hir_id) + && let hir::Node::Pat(binding) = self.tcx.hir_node(*hir_id) && let Some(parent) = self.tcx.hir().find_parent(binding.hir_id) { // We've reached the root of the method call chain... diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/type_err_ctxt_ext.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/type_err_ctxt_ext.rs index dee3e14f3c918..388f04e03bb21 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/type_err_ctxt_ext.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/type_err_ctxt_ext.rs @@ -993,13 +993,13 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { ) -> Result<(), ErrorGuaranteed> { if let ObligationCauseCode::FunctionArgumentObligation { arg_hir_id, .. } = obligation.cause.code() - && let Some(Node::Expr(arg)) = self.tcx.opt_hir_node(*arg_hir_id) + && let Node::Expr(arg) = self.tcx.hir_node(*arg_hir_id) && let arg = arg.peel_borrows() && let hir::ExprKind::Path(hir::QPath::Resolved( None, hir::Path { res: hir::def::Res::Local(hir_id), .. }, )) = arg.kind - && let Some(Node::Pat(pat)) = self.tcx.opt_hir_node(*hir_id) + && let Node::Pat(pat) = self.tcx.hir_node(*hir_id) && let Some((preds, guar)) = self.reported_trait_errors.borrow().get(&pat.span) && preds.contains(&obligation.predicate) { @@ -1037,10 +1037,8 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { } } let hir_id = self.tcx.local_def_id_to_hir_id(obligation.cause.body_id); - let body_id = match self.tcx.opt_hir_node(hir_id) { - Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, _, body_id), .. })) => { - body_id - } + let body_id = match self.tcx.hir_node(hir_id) { + hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, _, body_id), .. }) => body_id, _ => return false, }; let mut v = V { search_span: span, found: None }; @@ -1163,7 +1161,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { if let hir::ExprKind::Path(hir::QPath::Resolved(None, path)) = expr.kind && let hir::Path { res: hir::def::Res::Local(hir_id), .. } = path - && let Some(hir::Node::Pat(binding)) = self.tcx.opt_hir_node(*hir_id) + && let hir::Node::Pat(binding) = self.tcx.hir_node(*hir_id) && let Some(parent) = self.tcx.hir().find_parent(binding.hir_id) { // We've reached the root of the method call chain... diff --git a/src/librustdoc/html/render/span_map.rs b/src/librustdoc/html/render/span_map.rs index b055e355b788a..8ee35db56f8dd 100644 --- a/src/librustdoc/html/render/span_map.rs +++ b/src/librustdoc/html/render/span_map.rs @@ -94,7 +94,7 @@ impl<'tcx> SpanMapVisitor<'tcx> { /// Used to generate links on items' definition to go to their documentation page. pub(crate) fn extract_info_from_hir_id(&mut self, hir_id: HirId) { - if let Some(Node::Item(item)) = self.tcx.opt_hir_node(hir_id) { + if let Node::Item(item) = self.tcx.hir_node(hir_id) { if let Some(span) = self.tcx.def_ident_span(item.owner_id) { let cspan = clean::Span::new(span); // If the span isn't from the current crate, we ignore it. @@ -199,7 +199,7 @@ impl<'tcx> Visitor<'tcx> for SpanMapVisitor<'tcx> { if !span.overlaps(m.spans.inner_span) { // Now that we confirmed it's a file import, we want to get the span for the module // name only and not all the "mod foo;". - if let Some(Node::Item(item)) = self.tcx.opt_hir_node(id) { + if let Node::Item(item) = self.tcx.hir_node(id) { self.matches.insert( item.ident.span, LinkFromSrc::Local(clean::Span::new(m.spans.inner_span)), diff --git a/src/tools/clippy/clippy_lints/src/absolute_paths.rs b/src/tools/clippy/clippy_lints/src/absolute_paths.rs index 3822b83b4bc64..8ba661afeeb6f 100644 --- a/src/tools/clippy/clippy_lints/src/absolute_paths.rs +++ b/src/tools/clippy/clippy_lints/src/absolute_paths.rs @@ -62,7 +62,7 @@ impl LateLintPass<'_> for AbsolutePaths { } = self; if !path.span.from_expansion() - && let Some(node) = cx.tcx.opt_hir_node(hir_id) + && let node = cx.tcx.hir_node(hir_id) && !matches!(node, Node::Item(item) if matches!(item.kind, ItemKind::Use(_, _))) && let [first, rest @ ..] = path.segments // Handle `::std` diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_slice_different_sizes.rs b/src/tools/clippy/clippy_lints/src/casts/cast_slice_different_sizes.rs index 91bad8256ecb1..0f29743856ac9 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_slice_different_sizes.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_slice_different_sizes.rs @@ -68,9 +68,8 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'tcx>, msrv: &Msrv fn is_child_of_cast(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool { let map = cx.tcx.hir(); - if let Some(parent_id) = map.opt_parent_id(expr.hir_id) - && let Some(parent) = cx.tcx.opt_hir_node(parent_id) - { + if let Some(parent_id) = map.opt_parent_id(expr.hir_id) { + let parent = cx.tcx.hir_node(parent_id); let expr = match parent { Node::Block(block) => { if let Some(parent_expr) = block.expr { diff --git a/src/tools/clippy/clippy_lints/src/casts/unnecessary_cast.rs b/src/tools/clippy/clippy_lints/src/casts/unnecessary_cast.rs index bb86b6f30759c..81d0def4322d3 100644 --- a/src/tools/clippy/clippy_lints/src/casts/unnecessary_cast.rs +++ b/src/tools/clippy/clippy_lints/src/casts/unnecessary_cast.rs @@ -144,8 +144,7 @@ pub(super) fn check<'tcx>( if cast_from.kind() == cast_to.kind() && !in_external_macro(cx.sess(), expr.span) { if let Some(id) = path_to_local(cast_expr) - && let Some(span) = cx.tcx.hir().opt_span(id) - && !span.eq_ctxt(cast_expr.span) + && !cx.tcx.hir().span(id).eq_ctxt(cast_expr.span) { // Binding context is different than the identifiers context. // Weird macro wizardry could be involved here. diff --git a/src/tools/clippy/clippy_lints/src/derivable_impls.rs b/src/tools/clippy/clippy_lints/src/derivable_impls.rs index 6b0423200d765..b0f46f5c646cf 100644 --- a/src/tools/clippy/clippy_lints/src/derivable_impls.rs +++ b/src/tools/clippy/clippy_lints/src/derivable_impls.rs @@ -195,7 +195,7 @@ impl<'tcx> LateLintPass<'tcx> for DerivableImpls { && let Some(def_id) = trait_ref.trait_def_id() && cx.tcx.is_diagnostic_item(sym::Default, def_id) && let impl_item_hir = child.id.hir_id() - && let Some(Node::ImplItem(impl_item)) = cx.tcx.opt_hir_node(impl_item_hir) + && let Node::ImplItem(impl_item) = cx.tcx.hir_node(impl_item_hir) && let ImplItemKind::Fn(_, b) = &impl_item.kind && let Body { value: func_expr, .. } = cx.tcx.hir().body(*b) && let &Adt(adt_def, args) = cx.tcx.type_of(item.owner_id).instantiate_identity().kind() diff --git a/src/tools/clippy/clippy_lints/src/empty_drop.rs b/src/tools/clippy/clippy_lints/src/empty_drop.rs index 1d2b907b94821..74db250b3ae92 100644 --- a/src/tools/clippy/clippy_lints/src/empty_drop.rs +++ b/src/tools/clippy/clippy_lints/src/empty_drop.rs @@ -42,7 +42,7 @@ impl LateLintPass<'_> for EmptyDrop { }) = item.kind && trait_ref.trait_def_id() == cx.tcx.lang_items().drop_trait() && let impl_item_hir = child.id.hir_id() - && let Some(Node::ImplItem(impl_item)) = cx.tcx.opt_hir_node(impl_item_hir) + && let Node::ImplItem(impl_item) = cx.tcx.hir_node(impl_item_hir) && let ImplItemKind::Fn(_, b) = &impl_item.kind && let Body { value: func_expr, .. } = cx.tcx.hir().body(*b) && let func_expr = peel_blocks(func_expr) diff --git a/src/tools/clippy/clippy_lints/src/escape.rs b/src/tools/clippy/clippy_lints/src/escape.rs index b7776263060be..218d7c6c01ae1 100644 --- a/src/tools/clippy/clippy_lints/src/escape.rs +++ b/src/tools/clippy/clippy_lints/src/escape.rs @@ -123,11 +123,11 @@ impl<'tcx> LateLintPass<'tcx> for BoxedLocal { // TODO: Replace with Map::is_argument(..) when it's fixed fn is_argument(tcx: TyCtxt<'_>, id: HirId) -> bool { - match tcx.opt_hir_node(id) { - Some(Node::Pat(Pat { + match tcx.hir_node(id) { + Node::Pat(Pat { kind: PatKind::Binding(..), .. - })) => (), + }) => (), _ => return false, } diff --git a/src/tools/clippy/clippy_lints/src/explicit_write.rs b/src/tools/clippy/clippy_lints/src/explicit_write.rs index e8c1e5db35e00..de048fef5f224 100644 --- a/src/tools/clippy/clippy_lints/src/explicit_write.rs +++ b/src/tools/clippy/clippy_lints/src/explicit_write.rs @@ -111,7 +111,7 @@ fn look_in_block<'tcx, 'hir>(cx: &LateContext<'tcx>, kind: &'tcx ExprKind<'hir>) // Find id of the local that expr_end_of_block resolves to && let ExprKind::Path(QPath::Resolved(None, expr_path)) = expr_end_of_block.kind && let Res::Local(expr_res) = expr_path.res - && let Some(Node::Pat(res_pat)) = cx.tcx.opt_hir_node(expr_res) + && let Node::Pat(res_pat) = cx.tcx.hir_node(expr_res) // Find id of the local we found in the block && let PatKind::Binding(BindingAnnotation::NONE, local_hir_id, _ident, None) = local.pat.kind diff --git a/src/tools/clippy/clippy_lints/src/index_refutable_slice.rs b/src/tools/clippy/clippy_lints/src/index_refutable_slice.rs index 5417c13d07967..252be30c4e27d 100644 --- a/src/tools/clippy/clippy_lints/src/index_refutable_slice.rs +++ b/src/tools/clippy/clippy_lints/src/index_refutable_slice.rs @@ -248,7 +248,7 @@ impl<'a, 'tcx> Visitor<'tcx> for SliceIndexLintingVisitor<'a, 'tcx> { // Checking for slice indexing && let parent_id = map.parent_id(expr.hir_id) - && let Some(hir::Node::Expr(parent_expr)) = cx.tcx.opt_hir_node(parent_id) + && let hir::Node::Expr(parent_expr) = cx.tcx.hir_node(parent_id) && let hir::ExprKind::Index(_, index_expr, _) = parent_expr.kind && let Some(Constant::Int(index_value)) = constant(cx, cx.typeck_results(), index_expr) && let Ok(index_value) = index_value.try_into() @@ -256,7 +256,7 @@ impl<'a, 'tcx> Visitor<'tcx> for SliceIndexLintingVisitor<'a, 'tcx> { // Make sure that this slice index is read only && let maybe_addrof_id = map.parent_id(parent_id) - && let Some(hir::Node::Expr(maybe_addrof_expr)) = cx.tcx.opt_hir_node(maybe_addrof_id) + && let hir::Node::Expr(maybe_addrof_expr) = cx.tcx.hir_node(maybe_addrof_id) && let hir::ExprKind::AddrOf(_kind, hir::Mutability::Not, _inner_expr) = maybe_addrof_expr.kind { use_info.index_use.push((index_value, map.span(parent_expr.hir_id))); diff --git a/src/tools/clippy/clippy_lints/src/len_zero.rs b/src/tools/clippy/clippy_lints/src/len_zero.rs index c1ab020117ca6..27d85cde5320a 100644 --- a/src/tools/clippy/clippy_lints/src/len_zero.rs +++ b/src/tools/clippy/clippy_lints/src/len_zero.rs @@ -147,9 +147,9 @@ impl<'tcx> LateLintPass<'tcx> for LenZero { && let Some(output) = parse_len_output(cx, cx.tcx.fn_sig(item.owner_id).instantiate_identity().skip_binder()) { - let (name, kind) = match cx.tcx.opt_hir_node(ty_hir_id) { - Some(Node::ForeignItem(x)) => (x.ident.name, "extern type"), - Some(Node::Item(x)) => match x.kind { + let (name, kind) = match cx.tcx.hir_node(ty_hir_id) { + Node::ForeignItem(x) => (x.ident.name, "extern type"), + Node::Item(x) => match x.kind { ItemKind::Struct(..) => (x.ident.name, "struct"), ItemKind::Enum(..) => (x.ident.name, "enum"), ItemKind::Union(..) => (x.ident.name, "union"), diff --git a/src/tools/clippy/clippy_lints/src/loops/same_item_push.rs b/src/tools/clippy/clippy_lints/src/loops/same_item_push.rs index 920a887a6fd1b..5f015db2b33bf 100644 --- a/src/tools/clippy/clippy_lints/src/loops/same_item_push.rs +++ b/src/tools/clippy/clippy_lints/src/loops/same_item_push.rs @@ -63,7 +63,7 @@ pub(super) fn check<'tcx>( && let PatKind::Binding(bind_ann, ..) = pat.kind && !matches!(bind_ann, BindingAnnotation(_, Mutability::Mut)) && let parent_node = cx.tcx.hir().parent_id(hir_id) - && let Some(Node::Local(parent_let_expr)) = cx.tcx.opt_hir_node(parent_node) + && let Node::Local(parent_let_expr) = cx.tcx.hir_node(parent_node) && let Some(init) = parent_let_expr.init { match init.kind { diff --git a/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs b/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs index 71a83a68db933..e1768c6d97641 100644 --- a/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs +++ b/src/tools/clippy/clippy_lints/src/manual_rem_euclid.rs @@ -76,7 +76,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualRemEuclid { // Also ensures the const is nonzero since zero can't be a divisor && const1 == const2 && const2 == const3 && let Some(hir_id) = path_to_local(expr3) - && let Some(Node::Pat(_)) = cx.tcx.opt_hir_node(hir_id) + && let Node::Pat(_) = cx.tcx.hir_node(hir_id) { // Apply only to params or locals with annotated types match cx.tcx.hir().find_parent(hir_id) { diff --git a/src/tools/clippy/clippy_lints/src/methods/filter_next.rs b/src/tools/clippy/clippy_lints/src/methods/filter_next.rs index 9251130a30549..7339362193e54 100644 --- a/src/tools/clippy/clippy_lints/src/methods/filter_next.rs +++ b/src/tools/clippy/clippy_lints/src/methods/filter_next.rs @@ -44,7 +44,7 @@ pub(super) fn check<'tcx>( // add note if not multi-line span_lint_and_then(cx, FILTER_NEXT, expr.span, msg, |diag| { let (applicability, pat) = if let Some(id) = path_to_local(recv) - && let Some(hir::Node::Pat(pat)) = cx.tcx.opt_hir_node(id) + && let hir::Node::Pat(pat) = cx.tcx.hir_node(id) && let hir::PatKind::Binding(BindingAnnotation(_, Mutability::Not), _, ident, _) = pat.kind { (Applicability::Unspecified, Some((pat.span, ident))) diff --git a/src/tools/clippy/clippy_lints/src/methods/option_map_unwrap_or.rs b/src/tools/clippy/clippy_lints/src/methods/option_map_unwrap_or.rs index 624597ffca949..ab36f854fcb1d 100644 --- a/src/tools/clippy/clippy_lints/src/methods/option_map_unwrap_or.rs +++ b/src/tools/clippy/clippy_lints/src/methods/option_map_unwrap_or.rs @@ -135,7 +135,7 @@ impl<'a, 'tcx> Visitor<'tcx> for UnwrapVisitor<'a, 'tcx> { fn visit_path(&mut self, path: &Path<'tcx>, _: HirId) { if let Res::Local(local_id) = path.res - && let Some(Node::Pat(pat)) = self.cx.tcx.opt_hir_node(local_id) + && let Node::Pat(pat) = self.cx.tcx.hir_node(local_id) && let PatKind::Binding(_, local_id, ..) = pat.kind { self.identifiers.insert(local_id); @@ -166,7 +166,7 @@ impl<'a, 'tcx> Visitor<'tcx> for ReferenceVisitor<'a, 'tcx> { && let ExprKind::Path(ref path) = expr.kind && let QPath::Resolved(_, path) = path && let Res::Local(local_id) = path.res - && let Some(Node::Pat(pat)) = self.cx.tcx.opt_hir_node(local_id) + && let Node::Pat(pat) = self.cx.tcx.hir_node(local_id) && let PatKind::Binding(_, local_id, ..) = pat.kind && self.identifiers.contains(&local_id) { diff --git a/src/tools/clippy/clippy_lints/src/min_ident_chars.rs b/src/tools/clippy/clippy_lints/src/min_ident_chars.rs index 2f9f04832a750..70cc43e266c6d 100644 --- a/src/tools/clippy/clippy_lints/src/min_ident_chars.rs +++ b/src/tools/clippy/clippy_lints/src/min_ident_chars.rs @@ -91,7 +91,7 @@ impl Visitor<'_> for IdentVisitor<'_, '_> { let node = if hir_id.local_id == ItemLocalId::from_u32(0) { // In this case, we can just use `find`, `Owner`'s `node` field is private anyway so we can't // reimplement it even if we wanted to - cx.tcx.opt_hir_node(hir_id) + Some(cx.tcx.hir_node(hir_id)) } else { let owner = cx.tcx.hir_owner_nodes(hir_id.owner); owner.nodes.get(hir_id.local_id).copied().map(|p| p.node) diff --git a/src/tools/clippy/clippy_lints/src/mixed_read_write_in_expression.rs b/src/tools/clippy/clippy_lints/src/mixed_read_write_in_expression.rs index 195ce17629a71..b593e48ae2e16 100644 --- a/src/tools/clippy/clippy_lints/src/mixed_read_write_in_expression.rs +++ b/src/tools/clippy/clippy_lints/src/mixed_read_write_in_expression.rs @@ -213,11 +213,8 @@ fn check_for_unsequenced_reads(vis: &mut ReadVisitor<'_, '_>) { if parent_id == cur_id { break; } - let Some(parent_node) = vis.cx.tcx.opt_hir_node(parent_id) else { - break; - }; - let stop_early = match parent_node { + let stop_early = match vis.cx.tcx.hir_node(parent_id) { Node::Expr(expr) => check_expr(vis, expr), Node::Stmt(stmt) => check_stmt(vis, stmt), Node::Item(_) => { diff --git a/src/tools/clippy/clippy_lints/src/non_copy_const.rs b/src/tools/clippy/clippy_lints/src/non_copy_const.rs index f8365deebd46e..10ab380ba1bc5 100644 --- a/src/tools/clippy/clippy_lints/src/non_copy_const.rs +++ b/src/tools/clippy/clippy_lints/src/non_copy_const.rs @@ -453,7 +453,7 @@ impl<'tcx> LateLintPass<'tcx> for NonCopyConst { if parent_id == cur_expr.hir_id { break; } - if let Some(Node::Expr(parent_expr)) = cx.tcx.opt_hir_node(parent_id) { + if let Node::Expr(parent_expr) = cx.tcx.hir_node(parent_id) { match &parent_expr.kind { ExprKind::AddrOf(..) => { // `&e` => `e` must be referenced. diff --git a/src/tools/clippy/clippy_lints/src/same_name_method.rs b/src/tools/clippy/clippy_lints/src/same_name_method.rs index 7a351dab2d458..07806b182f22b 100644 --- a/src/tools/clippy/clippy_lints/src/same_name_method.rs +++ b/src/tools/clippy/clippy_lints/src/same_name_method.rs @@ -76,8 +76,8 @@ impl<'tcx> LateLintPass<'tcx> for SameNameMethod { match of_trait { Some(trait_ref) => { let mut methods_in_trait: BTreeSet = - if let Some(Node::TraitRef(TraitRef { path, .. })) = - cx.tcx.opt_hir_node(trait_ref.hir_ref_id) + if let Node::TraitRef(TraitRef { path, .. }) = + cx.tcx.hir_node(trait_ref.hir_ref_id) && let Res::Def(DefKind::Trait, did) = path.res { // FIXME: if diff --git a/src/tools/clippy/clippy_lints/src/self_named_constructors.rs b/src/tools/clippy/clippy_lints/src/self_named_constructors.rs index 98f3235af10a0..fc5a45dd56d6b 100644 --- a/src/tools/clippy/clippy_lints/src/self_named_constructors.rs +++ b/src/tools/clippy/clippy_lints/src/self_named_constructors.rs @@ -73,7 +73,7 @@ impl<'tcx> LateLintPass<'tcx> for SelfNamedConstructors { if let Some(self_def) = self_ty.ty_adt_def() && let Some(self_local_did) = self_def.did().as_local() && let self_id = cx.tcx.local_def_id_to_hir_id(self_local_did) - && let Some(Node::Item(x)) = cx.tcx.opt_hir_node(self_id) + && let Node::Item(x) = cx.tcx.hir_node(self_id) && let type_name = x.ident.name.as_str().to_lowercase() && (impl_item.ident.name.as_str() == type_name || impl_item.ident.name.as_str().replace('_', "") == type_name) diff --git a/src/tools/clippy/clippy_utils/src/lib.rs b/src/tools/clippy/clippy_utils/src/lib.rs index 4e499ff4cc612..3f936009e44ec 100644 --- a/src/tools/clippy/clippy_utils/src/lib.rs +++ b/src/tools/clippy/clippy_utils/src/lib.rs @@ -177,10 +177,10 @@ pub fn expr_or_init<'a, 'b, 'tcx: 'b>(cx: &LateContext<'tcx>, mut expr: &'a Expr /// canonical binding `HirId`. pub fn find_binding_init<'tcx>(cx: &LateContext<'tcx>, hir_id: HirId) -> Option<&'tcx Expr<'tcx>> { let hir = cx.tcx.hir(); - if let Some(Node::Pat(pat)) = cx.tcx.opt_hir_node(hir_id) + if let Node::Pat(pat) = cx.tcx.hir_node(hir_id) && matches!(pat.kind, PatKind::Binding(BindingAnnotation::NONE, ..)) && let parent = hir.parent_id(hir_id) - && let Some(Node::Local(local)) = cx.tcx.opt_hir_node(parent) + && let Node::Local(local) = cx.tcx.hir_node(parent) { return local.init; } @@ -1327,7 +1327,7 @@ pub fn get_enclosing_block<'tcx>(cx: &LateContext<'tcx>, hir_id: HirId) -> Optio let map = &cx.tcx.hir(); let enclosing_node = map .get_enclosing_scope(hir_id) - .and_then(|enclosing_id| cx.tcx.opt_hir_node(enclosing_id)); + .map(|enclosing_id| cx.tcx.hir_node(enclosing_id)); enclosing_node.and_then(|node| match node { Node::Block(block) => Some(block), Node::Item(&Item { @@ -2696,10 +2696,10 @@ impl<'tcx> ExprUseNode<'tcx> { )), Self::Return(id) => { let hir_id = cx.tcx.local_def_id_to_hir_id(id.def_id); - if let Some(Node::Expr(Expr { + if let Node::Expr(Expr { kind: ExprKind::Closure(c), .. - })) = cx.tcx.opt_hir_node(hir_id) + }) = cx.tcx.hir_node(hir_id) { match c.fn_decl.output { FnRetTy::DefaultReturn(_) => None, From be77cf86bae2b8a9c94eb93092d1b05230b17e8c Mon Sep 17 00:00:00 2001 From: Nadrieril Date: Thu, 25 Jan 2024 03:37:24 +0100 Subject: [PATCH 14/25] Use a `Vec` instead of a slice in `DeconstructedPat` --- compiler/rustc_pattern_analysis/src/lib.rs | 8 +-- compiler/rustc_pattern_analysis/src/pat.rs | 32 ++++++----- .../rustc_pattern_analysis/src/pat_column.rs | 4 +- compiler/rustc_pattern_analysis/src/rustc.rs | 57 ++++++++----------- .../rustc_pattern_analysis/src/usefulness.rs | 4 +- 5 files changed, 51 insertions(+), 54 deletions(-) diff --git a/compiler/rustc_pattern_analysis/src/lib.rs b/compiler/rustc_pattern_analysis/src/lib.rs index 3d0eb117d174f..cef2fe1621500 100644 --- a/compiler/rustc_pattern_analysis/src/lib.rs +++ b/compiler/rustc_pattern_analysis/src/lib.rs @@ -119,7 +119,7 @@ pub trait TypeCx: Sized + fmt::Debug { /// `DeconstructedPat`. Only invoqued when `pat.ctor()` is `Struct | Variant(_) | UnionField`. fn write_variant_name( f: &mut fmt::Formatter<'_>, - pat: &crate::pat::DeconstructedPat<'_, Self>, + pat: &crate::pat::DeconstructedPat, ) -> fmt::Result; /// Raise a bug. @@ -130,9 +130,9 @@ pub trait TypeCx: Sized + fmt::Debug { /// The default implementation does nothing. fn lint_overlapping_range_endpoints( &self, - _pat: &DeconstructedPat<'_, Self>, + _pat: &DeconstructedPat, _overlaps_on: IntRange, - _overlaps_with: &[&DeconstructedPat<'_, Self>], + _overlaps_with: &[&DeconstructedPat], ) { } } @@ -140,7 +140,7 @@ pub trait TypeCx: Sized + fmt::Debug { /// The arm of a match expression. #[derive(Debug)] pub struct MatchArm<'p, Cx: TypeCx> { - pub pat: &'p DeconstructedPat<'p, Cx>, + pub pat: &'p DeconstructedPat, pub has_guard: bool, pub arm_data: Cx::ArmData, } diff --git a/compiler/rustc_pattern_analysis/src/pat.rs b/compiler/rustc_pattern_analysis/src/pat.rs index c94d8b9353589..0b239b5a36238 100644 --- a/compiler/rustc_pattern_analysis/src/pat.rs +++ b/compiler/rustc_pattern_analysis/src/pat.rs @@ -6,7 +6,7 @@ use std::fmt; use smallvec::{smallvec, SmallVec}; use crate::constructor::{Constructor, Slice, SliceKind}; -use crate::{Captures, TypeCx}; +use crate::TypeCx; use self::Constructor::*; @@ -21,9 +21,9 @@ use self::Constructor::*; /// This happens if a private or `non_exhaustive` field is uninhabited, because the code mustn't /// observe that it is uninhabited. In that case that field is not included in `fields`. Care must /// be taken when converting to/from `thir::Pat`. -pub struct DeconstructedPat<'p, Cx: TypeCx> { +pub struct DeconstructedPat { ctor: Constructor, - fields: &'p [DeconstructedPat<'p, Cx>], + fields: Vec>, ty: Cx::Ty, /// Extra data to store in a pattern. `None` if the pattern is a wildcard that does not /// correspond to a user-supplied pattern. @@ -32,14 +32,20 @@ pub struct DeconstructedPat<'p, Cx: TypeCx> { useful: Cell, } -impl<'p, Cx: TypeCx> DeconstructedPat<'p, Cx> { +impl DeconstructedPat { pub fn wildcard(ty: Cx::Ty) -> Self { - DeconstructedPat { ctor: Wildcard, fields: &[], ty, data: None, useful: Cell::new(false) } + DeconstructedPat { + ctor: Wildcard, + fields: Vec::new(), + ty, + data: None, + useful: Cell::new(false), + } } pub fn new( ctor: Constructor, - fields: &'p [DeconstructedPat<'p, Cx>], + fields: Vec>, ty: Cx::Ty, data: Cx::PatData, ) -> Self { @@ -62,17 +68,17 @@ impl<'p, Cx: TypeCx> DeconstructedPat<'p, Cx> { self.data.as_ref() } - pub fn iter_fields(&self) -> impl Iterator> + Captures<'_> { + pub fn iter_fields<'a>(&'a self) -> impl Iterator> { self.fields.iter() } /// Specialize this pattern with a constructor. /// `other_ctor` can be different from `self.ctor`, but must be covered by it. - pub(crate) fn specialize( - &self, + pub(crate) fn specialize<'a>( + &'a self, other_ctor: &Constructor, ctor_arity: usize, - ) -> SmallVec<[PatOrWild<'p, Cx>; 2]> { + ) -> SmallVec<[PatOrWild<'a, Cx>; 2]> { let wildcard_sub_tys = || (0..ctor_arity).map(|_| PatOrWild::Wild).collect(); match (&self.ctor, other_ctor) { // Return a wildcard for each field of `other_ctor`. @@ -139,7 +145,7 @@ impl<'p, Cx: TypeCx> DeconstructedPat<'p, Cx> { } /// This is best effort and not good enough for a `Display` impl. -impl<'p, Cx: TypeCx> fmt::Debug for DeconstructedPat<'p, Cx> { +impl fmt::Debug for DeconstructedPat { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { let pat = self; let mut first = true; @@ -221,7 +227,7 @@ pub(crate) enum PatOrWild<'p, Cx: TypeCx> { /// A non-user-provided wildcard, created during specialization. Wild, /// A user-provided pattern. - Pat(&'p DeconstructedPat<'p, Cx>), + Pat(&'p DeconstructedPat), } impl<'p, Cx: TypeCx> Clone for PatOrWild<'p, Cx> { @@ -236,7 +242,7 @@ impl<'p, Cx: TypeCx> Clone for PatOrWild<'p, Cx> { impl<'p, Cx: TypeCx> Copy for PatOrWild<'p, Cx> {} impl<'p, Cx: TypeCx> PatOrWild<'p, Cx> { - pub(crate) fn as_pat(&self) -> Option<&'p DeconstructedPat<'p, Cx>> { + pub(crate) fn as_pat(&self) -> Option<&'p DeconstructedPat> { match self { PatOrWild::Wild => None, PatOrWild::Pat(pat) => Some(pat), diff --git a/compiler/rustc_pattern_analysis/src/pat_column.rs b/compiler/rustc_pattern_analysis/src/pat_column.rs index 3cacfc491b981..d5db4bf4a342e 100644 --- a/compiler/rustc_pattern_analysis/src/pat_column.rs +++ b/compiler/rustc_pattern_analysis/src/pat_column.rs @@ -13,7 +13,7 @@ use crate::{Captures, MatchArm, TypeCx}; #[derive(Debug)] pub struct PatternColumn<'p, Cx: TypeCx> { /// This must not contain an or-pattern. `expand_and_push` takes care to expand them. - patterns: Vec<&'p DeconstructedPat<'p, Cx>>, + patterns: Vec<&'p DeconstructedPat>, } impl<'p, Cx: TypeCx> PatternColumn<'p, Cx> { @@ -41,7 +41,7 @@ impl<'p, Cx: TypeCx> PatternColumn<'p, Cx> { pub fn head_ty(&self) -> Option<&Cx::Ty> { self.patterns.first().map(|pat| pat.ty()) } - pub fn iter<'a>(&'a self) -> impl Iterator> + Captures<'a> { + pub fn iter<'a>(&'a self) -> impl Iterator> + Captures<'a> { self.patterns.iter().copied() } diff --git a/compiler/rustc_pattern_analysis/src/rustc.rs b/compiler/rustc_pattern_analysis/src/rustc.rs index ec37e20211860..431b7f4a31265 100644 --- a/compiler/rustc_pattern_analysis/src/rustc.rs +++ b/compiler/rustc_pattern_analysis/src/rustc.rs @@ -1,4 +1,3 @@ -use smallvec::SmallVec; use std::fmt; use std::iter::once; @@ -27,8 +26,7 @@ use crate::constructor::Constructor::*; pub type Constructor<'p, 'tcx> = crate::constructor::Constructor>; pub type ConstructorSet<'p, 'tcx> = crate::constructor::ConstructorSet>; -pub type DeconstructedPat<'p, 'tcx> = - crate::pat::DeconstructedPat<'p, RustcMatchCheckCtxt<'p, 'tcx>>; +pub type DeconstructedPat<'p, 'tcx> = crate::pat::DeconstructedPat>; pub type MatchArm<'p, 'tcx> = crate::MatchArm<'p, RustcMatchCheckCtxt<'p, 'tcx>>; pub type Usefulness<'p, 'tcx> = crate::usefulness::Usefulness<'p, RustcMatchCheckCtxt<'p, 'tcx>>; pub type UsefulnessReport<'p, 'tcx> = @@ -458,21 +456,20 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { /// Note: the input patterns must have been lowered through /// `rustc_mir_build::thir::pattern::check_match::MatchVisitor::lower_pattern`. pub fn lower_pat(&self, pat: &'p Pat<'tcx>) -> DeconstructedPat<'p, 'tcx> { - let singleton = |pat| std::slice::from_ref(self.pattern_arena.alloc(pat)); let cx = self; let ty = cx.reveal_opaque_ty(pat.ty); let ctor; - let fields: &[_]; + let mut fields: Vec<_>; match &pat.kind { PatKind::AscribeUserType { subpattern, .. } | PatKind::InlineConstant { subpattern, .. } => return self.lower_pat(subpattern), PatKind::Binding { subpattern: Some(subpat), .. } => return self.lower_pat(subpat), PatKind::Binding { subpattern: None, .. } | PatKind::Wild => { ctor = Wildcard; - fields = &[]; + fields = vec![]; } PatKind::Deref { subpattern } => { - fields = singleton(self.lower_pat(subpattern)); + fields = vec![self.lower_pat(subpattern)]; ctor = match ty.kind() { // This is a box pattern. ty::Adt(adt, ..) if adt.is_box() => Struct, @@ -484,15 +481,14 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { match ty.kind() { ty::Tuple(fs) => { ctor = Struct; - let mut wilds: SmallVec<[_; 2]> = fs + fields = fs .iter() .map(|ty| cx.reveal_opaque_ty(ty)) .map(|ty| DeconstructedPat::wildcard(ty)) .collect(); for pat in subpatterns { - wilds[pat.field.index()] = self.lower_pat(&pat.pattern); + fields[pat.field.index()] = self.lower_pat(&pat.pattern); } - fields = cx.pattern_arena.alloc_from_iter(wilds); } ty::Adt(adt, args) if adt.is_box() => { // The only legal patterns of type `Box` (outside `std`) are `_` and box @@ -514,7 +510,7 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { DeconstructedPat::wildcard(self.reveal_opaque_ty(args.type_at(0))) }; ctor = Struct; - fields = singleton(pat); + fields = vec![pat]; } ty::Adt(adt, _) => { ctor = match pat.kind { @@ -534,14 +530,12 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { ty }, ); - let mut wilds: SmallVec<[_; 2]> = - tys.map(|ty| DeconstructedPat::wildcard(ty)).collect(); + fields = tys.map(|ty| DeconstructedPat::wildcard(ty)).collect(); for pat in subpatterns { if let Some(i) = field_id_to_id[pat.field.index()] { - wilds[i] = self.lower_pat(&pat.pattern); + fields[i] = self.lower_pat(&pat.pattern); } } - fields = cx.pattern_arena.alloc_from_iter(wilds); } _ => bug!("pattern has unexpected type: pat: {:?}, ty: {:?}", pat, ty), } @@ -553,7 +547,7 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { Some(b) => Bool(b), None => Opaque(OpaqueId::new()), }; - fields = &[]; + fields = vec![]; } ty::Char | ty::Int(_) | ty::Uint(_) => { ctor = match value.try_eval_bits(cx.tcx, cx.param_env) { @@ -569,7 +563,7 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { } None => Opaque(OpaqueId::new()), }; - fields = &[]; + fields = vec![]; } ty::Float(ty::FloatTy::F32) => { ctor = match value.try_eval_bits(cx.tcx, cx.param_env) { @@ -580,7 +574,7 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { } None => Opaque(OpaqueId::new()), }; - fields = &[]; + fields = vec![]; } ty::Float(ty::FloatTy::F64) => { ctor = match value.try_eval_bits(cx.tcx, cx.param_env) { @@ -591,7 +585,7 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { } None => Opaque(OpaqueId::new()), }; - fields = &[]; + fields = vec![]; } ty::Ref(_, t, _) if t.is_str() => { // We want a `&str` constant to behave like a `Deref` pattern, to be compatible @@ -602,16 +596,16 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { // subfields. // Note: `t` is `str`, not `&str`. let ty = self.reveal_opaque_ty(*t); - let subpattern = DeconstructedPat::new(Str(*value), &[], ty, pat); + let subpattern = DeconstructedPat::new(Str(*value), Vec::new(), ty, pat); ctor = Ref; - fields = singleton(subpattern) + fields = vec![subpattern] } // All constants that can be structurally matched have already been expanded // into the corresponding `Pat`s by `const_to_pat`. Constants that remain are // opaque. _ => { ctor = Opaque(OpaqueId::new()); - fields = &[]; + fields = vec![]; } } } @@ -648,7 +642,7 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { } _ => bug!("invalid type for range pattern: {}", ty.inner()), }; - fields = &[]; + fields = vec![]; } PatKind::Array { prefix, slice, suffix } | PatKind::Slice { prefix, slice, suffix } => { let array_len = match ty.kind() { @@ -664,25 +658,22 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { SliceKind::FixedLen(prefix.len() + suffix.len()) }; ctor = Slice(Slice::new(array_len, kind)); - fields = cx.pattern_arena.alloc_from_iter( - prefix.iter().chain(suffix.iter()).map(|p| self.lower_pat(&*p)), - ) + fields = prefix.iter().chain(suffix.iter()).map(|p| self.lower_pat(&*p)).collect(); } PatKind::Or { .. } => { ctor = Or; let pats = expand_or_pat(pat); - fields = - cx.pattern_arena.alloc_from_iter(pats.into_iter().map(|p| self.lower_pat(p))) + fields = pats.into_iter().map(|p| self.lower_pat(p)).collect(); } PatKind::Never => { // FIXME(never_patterns): handle `!` in exhaustiveness. This is a sane default // in the meantime. ctor = Wildcard; - fields = &[]; + fields = vec![]; } PatKind::Error(_) => { ctor = Opaque(OpaqueId::new()); - fields = &[]; + fields = vec![]; } } DeconstructedPat::new(ctor, fields, ty, pat) @@ -887,7 +878,7 @@ impl<'p, 'tcx> TypeCx for RustcMatchCheckCtxt<'p, 'tcx> { fn write_variant_name( f: &mut fmt::Formatter<'_>, - pat: &crate::pat::DeconstructedPat<'_, Self>, + pat: &crate::pat::DeconstructedPat, ) -> fmt::Result { if let ty::Adt(adt, _) = pat.ty().kind() { if adt.is_box() { @@ -906,9 +897,9 @@ impl<'p, 'tcx> TypeCx for RustcMatchCheckCtxt<'p, 'tcx> { fn lint_overlapping_range_endpoints( &self, - pat: &crate::pat::DeconstructedPat<'_, Self>, + pat: &crate::pat::DeconstructedPat, overlaps_on: IntRange, - overlaps_with: &[&crate::pat::DeconstructedPat<'_, Self>], + overlaps_with: &[&crate::pat::DeconstructedPat], ) { let overlap_as_pat = self.hoist_pat_range(&overlaps_on, *pat.ty()); let overlaps: Vec<_> = overlaps_with diff --git a/compiler/rustc_pattern_analysis/src/usefulness.rs b/compiler/rustc_pattern_analysis/src/usefulness.rs index 3d45d032a9934..28600d6309781 100644 --- a/compiler/rustc_pattern_analysis/src/usefulness.rs +++ b/compiler/rustc_pattern_analysis/src/usefulness.rs @@ -848,7 +848,7 @@ impl<'p, Cx: TypeCx> Clone for PatStack<'p, Cx> { } impl<'p, Cx: TypeCx> PatStack<'p, Cx> { - fn from_pattern(pat: &'p DeconstructedPat<'p, Cx>) -> Self { + fn from_pattern(pat: &'p DeconstructedPat) -> Self { PatStack { pats: smallvec![PatOrWild::Pat(pat)], relevant: true } } @@ -1585,7 +1585,7 @@ pub enum Usefulness<'p, Cx: TypeCx> { /// The arm is useful. This additionally carries a set of or-pattern branches that have been /// found to be redundant despite the overall arm being useful. Used only in the presence of /// or-patterns, otherwise it stays empty. - Useful(Vec<&'p DeconstructedPat<'p, Cx>>), + Useful(Vec<&'p DeconstructedPat>), /// The arm is redundant and can be removed without changing the behavior of the match /// expression. Redundant, From f65fe3ba59286710324abb9860667f1ecf805df9 Mon Sep 17 00:00:00 2001 From: Nadrieril Date: Thu, 25 Jan 2024 04:35:09 +0100 Subject: [PATCH 15/25] Remove `pattern_arena` from `RustcMatchCheckCtxt` --- .../rustc_mir_build/src/thir/pattern/check_match.rs | 3 +-- compiler/rustc_pattern_analysis/src/errors.rs | 5 ++++- compiler/rustc_pattern_analysis/src/rustc.rs | 12 +++++------- 3 files changed, 10 insertions(+), 10 deletions(-) diff --git a/compiler/rustc_mir_build/src/thir/pattern/check_match.rs b/compiler/rustc_mir_build/src/thir/pattern/check_match.rs index caf7f4227dbf8..1156e8be13e74 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/check_match.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/check_match.rs @@ -291,7 +291,7 @@ impl<'p, 'tcx> MatchVisitor<'p, 'tcx> { err = err.and(check_never_pattern(cx, pat)); }); err?; - Ok(cx.pattern_arena.alloc(cx.lower_pat(pat))) + Ok(self.pattern_arena.alloc(cx.lower_pat(pat))) } } @@ -388,7 +388,6 @@ impl<'p, 'tcx> MatchVisitor<'p, 'tcx> { typeck_results: self.typeck_results, param_env: self.param_env, module: self.tcx.parent_module(self.lint_level).to_def_id(), - pattern_arena: self.pattern_arena, dropless_arena: self.dropless_arena, match_lint_level: self.lint_level, whole_match_span, diff --git a/compiler/rustc_pattern_analysis/src/errors.rs b/compiler/rustc_pattern_analysis/src/errors.rs index 88770b0c43b37..bdb6cf19eac4e 100644 --- a/compiler/rustc_pattern_analysis/src/errors.rs +++ b/compiler/rustc_pattern_analysis/src/errors.rs @@ -23,7 +23,10 @@ impl<'tcx> Uncovered<'tcx> { span: Span, cx: &RustcMatchCheckCtxt<'p, 'tcx>, witnesses: Vec>, - ) -> Self { + ) -> Self + where + 'tcx: 'p, + { let witness_1 = cx.hoist_witness_pat(witnesses.get(0).unwrap()); Self { span, diff --git a/compiler/rustc_pattern_analysis/src/rustc.rs b/compiler/rustc_pattern_analysis/src/rustc.rs index 431b7f4a31265..5334857343f91 100644 --- a/compiler/rustc_pattern_analysis/src/rustc.rs +++ b/compiler/rustc_pattern_analysis/src/rustc.rs @@ -1,7 +1,7 @@ use std::fmt; use std::iter::once; -use rustc_arena::{DroplessArena, TypedArena}; +use rustc_arena::DroplessArena; use rustc_hir::def_id::DefId; use rustc_hir::HirId; use rustc_index::{Idx, IndexVec}; @@ -62,7 +62,7 @@ impl<'tcx> RevealedTy<'tcx> { } #[derive(Clone)] -pub struct RustcMatchCheckCtxt<'p, 'tcx> { +pub struct RustcMatchCheckCtxt<'p, 'tcx: 'p> { pub tcx: TyCtxt<'tcx>, pub typeck_results: &'tcx ty::TypeckResults<'tcx>, /// The module in which the match occurs. This is necessary for @@ -72,8 +72,6 @@ pub struct RustcMatchCheckCtxt<'p, 'tcx> { /// outside its module and should not be matchable with an empty match statement. pub module: DefId, pub param_env: ty::ParamEnv<'tcx>, - /// To allocate lowered patterns - pub pattern_arena: &'p TypedArena>, /// To allocate the result of `self.ctor_sub_tys()` pub dropless_arena: &'p DroplessArena, /// Lint level at the match. @@ -89,13 +87,13 @@ pub struct RustcMatchCheckCtxt<'p, 'tcx> { pub known_valid_scrutinee: bool, } -impl<'p, 'tcx> fmt::Debug for RustcMatchCheckCtxt<'p, 'tcx> { +impl<'p, 'tcx: 'p> fmt::Debug for RustcMatchCheckCtxt<'p, 'tcx> { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { f.debug_struct("RustcMatchCheckCtxt").finish() } } -impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { +impl<'p, 'tcx: 'p> RustcMatchCheckCtxt<'p, 'tcx> { /// Type inference occasionally gives us opaque types in places where corresponding patterns /// have more specific types. To avoid inconsistencies as well as detect opaque uninhabited /// types, we use the corresponding concrete type if possible. @@ -844,7 +842,7 @@ impl<'p, 'tcx> RustcMatchCheckCtxt<'p, 'tcx> { } } -impl<'p, 'tcx> TypeCx for RustcMatchCheckCtxt<'p, 'tcx> { +impl<'p, 'tcx: 'p> TypeCx for RustcMatchCheckCtxt<'p, 'tcx> { type Ty = RevealedTy<'tcx>; type Error = ErrorGuaranteed; type VariantIdx = VariantIdx; From be80c829fe1ca9191429b658333bcdd5448fc92a Mon Sep 17 00:00:00 2001 From: Vadim Petrochenkov Date: Wed, 31 Jan 2024 21:55:10 +0300 Subject: [PATCH 16/25] hir: Add some FIXMEs for future work --- compiler/rustc_ast_lowering/src/lib.rs | 4 ++++ compiler/rustc_hir/src/hir.rs | 1 + compiler/rustc_hir/src/intravisit.rs | 1 + compiler/rustc_middle/src/hir/map/mod.rs | 3 +++ 4 files changed, 9 insertions(+) diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs index bcd6453523caa..7ccfd51a7c4fe 100644 --- a/compiler/rustc_ast_lowering/src/lib.rs +++ b/compiler/rustc_ast_lowering/src/lib.rs @@ -753,6 +753,10 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> { fn lower_import_res(&mut self, id: NodeId) -> SmallVec<[Res; 3]> { let res = self.resolver.get_import_res(id).present_items(); let res: SmallVec<_> = res.map(|res| self.lower_res(res)).collect(); + // FIXME: The `Res::Err` doesn't necessarily mean an error was reported, it also happens + // for import list stem items with non-empty list. Instead, consider not emitting such + // items into HIR at all, or fill the `import_res_map` tables for them in resolve if that + // is not possible. Then add `span_delayed_bug` here. if !res.is_empty() { res } else { smallvec![Res::Err] } } diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs index 54155dc7a9487..4656b7d75c0d0 100644 --- a/compiler/rustc_hir/src/hir.rs +++ b/compiler/rustc_hir/src/hir.rs @@ -3499,6 +3499,7 @@ pub enum Node<'hir> { Crate(&'hir Mod<'hir>), Infer(&'hir InferArg), WhereBoundPredicate(&'hir WhereBoundPredicate<'hir>), + // FIXME: Merge into `Node::Infer`. ArrayLenInfer(&'hir InferArg), // Span by reference to minimize `Node`'s size #[allow(rustc::pass_by_value)] diff --git a/compiler/rustc_hir/src/intravisit.rs b/compiler/rustc_hir/src/intravisit.rs index 574b372be2ba5..52e1109ff9215 100644 --- a/compiler/rustc_hir/src/intravisit.rs +++ b/compiler/rustc_hir/src/intravisit.rs @@ -669,6 +669,7 @@ pub fn walk_pat_field<'v, V: Visitor<'v>>(visitor: &mut V, field: &'v PatField<' pub fn walk_array_len<'v, V: Visitor<'v>>(visitor: &mut V, len: &'v ArrayLen) { match len { + // FIXME: Use `visit_infer` here. ArrayLen::Infer(InferArg { hir_id, span: _ }) => visitor.visit_id(*hir_id), ArrayLen::Body(c) => visitor.visit_anon_const(c), } diff --git a/compiler/rustc_middle/src/hir/map/mod.rs b/compiler/rustc_middle/src/hir/map/mod.rs index dea61faef4af3..bf72aac10332e 100644 --- a/compiler/rustc_middle/src/hir/map/mod.rs +++ b/compiler/rustc_middle/src/hir/map/mod.rs @@ -222,6 +222,9 @@ impl<'hir> Map<'hir> { /// If calling repeatedly and iterating over parents, prefer [`Map::parent_iter`]. pub fn opt_parent_id(self, id: HirId) -> Option { if id.local_id == ItemLocalId::from_u32(0) { + // FIXME: This function never returns `None` right now, and the parent chain end is + // determined by checking for `parent(id) == id`. This function should return `None` + // for the crate root instead. Some(self.tcx.hir_owner_parent(id.owner)) } else { let owner = self.tcx.hir_owner_nodes(id.owner); From 0e16885abd6997897a28627d1ff514c106261a7f Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Tue, 30 Jan 2024 21:48:54 +0000 Subject: [PATCH 17/25] Use deeply_normalize_with_skipped_universes in when processing type outlives --- compiler/rustc_trait_selection/src/regions.rs | 3 ++- .../traits/next-solver/normalize-region-obligations.rs | 9 ++++++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/compiler/rustc_trait_selection/src/regions.rs b/compiler/rustc_trait_selection/src/regions.rs index e8929f114e165..e5a7b27446b4a 100644 --- a/compiler/rustc_trait_selection/src/regions.rs +++ b/compiler/rustc_trait_selection/src/regions.rs @@ -24,12 +24,13 @@ impl<'tcx> InferCtxtRegionExt<'tcx> for InferCtxt<'tcx> { let ty = self.resolve_vars_if_possible(ty); if self.next_trait_solver() { - crate::solve::deeply_normalize( + crate::solve::deeply_normalize_with_skipped_universes( self.at( &ObligationCause::dummy_with_span(origin.span()), outlives_env.param_env, ), ty, + vec![None; ty.outer_exclusive_binder().as_usize()], ) .map_err(|_| ty) } else { diff --git a/tests/ui/traits/next-solver/normalize-region-obligations.rs b/tests/ui/traits/next-solver/normalize-region-obligations.rs index 13c86b630f60e..d189e4893a320 100644 --- a/tests/ui/traits/next-solver/normalize-region-obligations.rs +++ b/tests/ui/traits/next-solver/normalize-region-obligations.rs @@ -1,4 +1,4 @@ -// revisions: normalize_param_env normalize_obligation +// revisions: normalize_param_env normalize_obligation hrtb // check-pass // compile-flags: -Znext-solver @@ -7,16 +7,23 @@ trait Foo { type Gat<'a> where ::Assoc: 'a; #[cfg(normalize_obligation)] type Gat<'a> where Self: 'a; + #[cfg(hrtb)] + type Gat<'b> where for<'a> >::Assoc: 'b; } trait Mirror { type Assoc: ?Sized; } impl Mirror for T { type Assoc = T; } +trait MirrorRegion<'a> { type Assoc: ?Sized; } +impl<'a, T> MirrorRegion<'a> for T { type Assoc = T; } + impl Foo for T { #[cfg(normalize_param_env)] type Gat<'a> = i32 where T: 'a; #[cfg(normalize_obligation)] type Gat<'a> = i32 where ::Assoc: 'a; + #[cfg(hrtb)] + type Gat<'b> = i32 where Self: 'b; } fn main() {} From 7576b77e50f2f8a4f256876dd38563e5e5becdee Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Tue, 30 Jan 2024 21:49:55 +0000 Subject: [PATCH 18/25] Do process_registered_region_obligations in a loop --- .../src/infer/outlives/obligations.rs | 38 +++++++++++-------- 1 file changed, 22 insertions(+), 16 deletions(-) diff --git a/compiler/rustc_infer/src/infer/outlives/obligations.rs b/compiler/rustc_infer/src/infer/outlives/obligations.rs index b10bf98e8b50a..cf68a60e280d1 100644 --- a/compiler/rustc_infer/src/infer/outlives/obligations.rs +++ b/compiler/rustc_infer/src/infer/outlives/obligations.rs @@ -153,22 +153,28 @@ impl<'tcx> InferCtxt<'tcx> { .try_collect() .map_err(|e| (e, SubregionOrigin::AscribeUserTypeProvePredicate(DUMMY_SP)))?; - let my_region_obligations = self.take_registered_region_obligations(); - - for RegionObligation { sup_type, sub_region, origin } in my_region_obligations { - let sup_type = - deeply_normalize_ty(sup_type, origin.clone()).map_err(|e| (e, origin.clone()))?; - debug!(?sup_type, ?sub_region, ?origin); - - let outlives = &mut TypeOutlives::new( - self, - self.tcx, - outlives_env.region_bound_pairs(), - None, - &normalized_caller_bounds, - ); - let category = origin.to_constraint_category(); - outlives.type_must_outlive(origin, sup_type, sub_region, category); + // Must loop since the process of normalizing may itself register region obligations. + loop { + let my_region_obligations = self.take_registered_region_obligations(); + if my_region_obligations.is_empty() { + break; + } + + for RegionObligation { sup_type, sub_region, origin } in my_region_obligations { + let sup_type = deeply_normalize_ty(sup_type, origin.clone()) + .map_err(|e| (e, origin.clone()))?; + debug!(?sup_type, ?sub_region, ?origin); + + let outlives = &mut TypeOutlives::new( + self, + self.tcx, + outlives_env.region_bound_pairs(), + None, + &normalized_caller_bounds, + ); + let category = origin.to_constraint_category(); + outlives.type_must_outlive(origin, sup_type, sub_region, category); + } } Ok(()) From 7d1fda7b40b580e5d8c7de1e3bfef7e35e997cee Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Tue, 30 Jan 2024 21:50:05 +0000 Subject: [PATCH 19/25] Normalize type outlives obligations in NLL --- .../src/type_check/constraint_conversion.rs | 97 +++++++++++++++---- .../src/type_check/free_region_relations.rs | 72 +++++++++----- compiler/rustc_borrowck/src/type_check/mod.rs | 6 +- .../normalize-type-outlives-in-param-env.rs | 18 ++++ .../next-solver/normalize-type-outlives.rs | 13 +++ 5 files changed, 156 insertions(+), 50 deletions(-) create mode 100644 tests/ui/traits/next-solver/normalize-type-outlives-in-param-env.rs create mode 100644 tests/ui/traits/next-solver/normalize-type-outlives.rs diff --git a/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs b/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs index 52559f9039b65..71035eea5d175 100644 --- a/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs +++ b/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs @@ -5,10 +5,15 @@ use rustc_infer::infer::outlives::obligations::{TypeOutlives, TypeOutlivesDelega use rustc_infer::infer::region_constraints::{GenericKind, VerifyBound}; use rustc_infer::infer::{self, InferCtxt, SubregionOrigin}; use rustc_middle::mir::{ClosureOutlivesSubject, ClosureRegionRequirements, ConstraintCategory}; +use rustc_middle::traits::ObligationCause; use rustc_middle::ty::GenericArgKind; use rustc_middle::ty::{self, TyCtxt}; use rustc_middle::ty::{TypeFoldable, TypeVisitableExt}; use rustc_span::{Span, DUMMY_SP}; +use rustc_trait_selection::solve::deeply_normalize; +use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt; +use rustc_trait_selection::traits::query::type_op::custom::CustomTypeOp; +use rustc_trait_selection::traits::query::type_op::{TypeOp, TypeOpOutput}; use crate::{ constraints::OutlivesConstraint, @@ -33,6 +38,7 @@ pub(crate) struct ConstraintConversion<'a, 'tcx> { /// our special inference variable there, we would mess that up. region_bound_pairs: &'a RegionBoundPairs<'tcx>, implicit_region_bound: ty::Region<'tcx>, + param_env: ty::ParamEnv<'tcx>, known_type_outlives_obligations: &'tcx [ty::PolyTypeOutlivesPredicate<'tcx>], locations: Locations, span: Span, @@ -47,6 +53,7 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { universal_regions: &'a UniversalRegions<'tcx>, region_bound_pairs: &'a RegionBoundPairs<'tcx>, implicit_region_bound: ty::Region<'tcx>, + param_env: ty::ParamEnv<'tcx>, known_type_outlives_obligations: &'tcx [ty::PolyTypeOutlivesPredicate<'tcx>], locations: Locations, span: Span, @@ -59,6 +66,7 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { universal_regions, region_bound_pairs, implicit_region_bound, + param_env, known_type_outlives_obligations, locations, span, @@ -137,36 +145,83 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { // Extract out various useful fields we'll need below. let ConstraintConversion { tcx, + infcx, + param_env, region_bound_pairs, implicit_region_bound, known_type_outlives_obligations, .. } = *self; - let ty::OutlivesPredicate(k1, r2) = predicate; - match k1.unpack() { - GenericArgKind::Lifetime(r1) => { - let r1_vid = self.to_region_vid(r1); - let r2_vid = self.to_region_vid(r2); - self.add_outlives(r1_vid, r2_vid, constraint_category); - } + let mut outlives_predicates = vec![(predicate, constraint_category)]; + while let Some((ty::OutlivesPredicate(k1, r2), constraint_category)) = + outlives_predicates.pop() + { + match k1.unpack() { + GenericArgKind::Lifetime(r1) => { + let r1_vid = self.to_region_vid(r1); + let r2_vid = self.to_region_vid(r2); + self.add_outlives(r1_vid, r2_vid, constraint_category); + } - GenericArgKind::Type(t1) => { - // we don't actually use this for anything, but - // the `TypeOutlives` code needs an origin. - let origin = infer::RelateParamBound(DUMMY_SP, t1, None); + GenericArgKind::Type(mut t1) => { + // Normalize the type we receive from a `TypeOutlives` obligation + // in the new trait solver. + if infcx.next_trait_solver() { + let result = CustomTypeOp::new( + |ocx| { + match deeply_normalize( + ocx.infcx.at( + &ObligationCause::dummy_with_span(self.span), + param_env, + ), + t1, + ) { + Ok(normalized_ty) => { + t1 = normalized_ty; + } + Err(e) => { + infcx.err_ctxt().report_fulfillment_errors(e); + } + } - TypeOutlives::new( - &mut *self, - tcx, - region_bound_pairs, - Some(implicit_region_bound), - known_type_outlives_obligations, - ) - .type_must_outlive(origin, t1, r2, constraint_category); - } + Ok(()) + }, + "normalize type outlives obligation", + ) + .fully_perform(infcx, self.span); + + match result { + Ok(TypeOpOutput { output: (), constraints, .. }) => { + if let Some(constraints) = constraints { + assert!( + constraints.member_constraints.is_empty(), + "FIXME(-Znext-solver): How do I handle these?" + ); + outlives_predicates + .extend(constraints.outlives.iter().copied()); + } + } + Err(_) => {} + } + } - GenericArgKind::Const(_) => unreachable!(), + // we don't actually use this for anything, but + // the `TypeOutlives` code needs an origin. + let origin = infer::RelateParamBound(DUMMY_SP, t1, None); + + TypeOutlives::new( + &mut *self, + tcx, + region_bound_pairs, + Some(implicit_region_bound), + known_type_outlives_obligations, + ) + .type_must_outlive(origin, t1, r2, constraint_category); + } + + GenericArgKind::Const(_) => unreachable!(), + } } } diff --git a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs index d518f54fd2533..4d53a53ee197b 100644 --- a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs +++ b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs @@ -8,8 +8,11 @@ use rustc_infer::infer::region_constraints::GenericKind; use rustc_infer::infer::InferCtxt; use rustc_middle::mir::ConstraintCategory; use rustc_middle::traits::query::OutlivesBound; +use rustc_middle::traits::ObligationCause; use rustc_middle::ty::{self, RegionVid, Ty, TypeVisitableExt}; -use rustc_span::{ErrorGuaranteed, Span, DUMMY_SP}; +use rustc_span::{ErrorGuaranteed, DUMMY_SP}; +use rustc_trait_selection::solve::deeply_normalize_with_skipped_universes; +use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt; use rustc_trait_selection::traits::query::type_op::{self, TypeOp}; use std::rc::Rc; use type_op::TypeOpOutput; @@ -52,7 +55,6 @@ pub(crate) struct CreateResult<'tcx> { pub(crate) fn create<'tcx>( infcx: &InferCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, - known_type_outlives_obligations: &'tcx [ty::PolyTypeOutlivesPredicate<'tcx>], implicit_region_bound: ty::Region<'tcx>, universal_regions: &Rc>, constraints: &mut MirTypeckRegionConstraints<'tcx>, @@ -60,7 +62,6 @@ pub(crate) fn create<'tcx>( UniversalRegionRelationsBuilder { infcx, param_env, - known_type_outlives_obligations, implicit_region_bound, constraints, universal_regions: universal_regions.clone(), @@ -178,7 +179,6 @@ impl UniversalRegionRelations<'_> { struct UniversalRegionRelationsBuilder<'this, 'tcx> { infcx: &'this InferCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, - known_type_outlives_obligations: &'tcx [ty::PolyTypeOutlivesPredicate<'tcx>], universal_regions: Rc>, implicit_region_bound: ty::Region<'tcx>, constraints: &'this mut MirTypeckRegionConstraints<'tcx>, @@ -222,6 +222,35 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> { self.relate_universal_regions(fr, fr_fn_body); } + // Normalize the assumptions we use to borrowck the program. + let mut constraints = vec![]; + let mut known_type_outlives_obligations = vec![]; + for bound in param_env.caller_bounds() { + let Some(outlives) = bound.as_type_outlives_clause() else { continue }; + let ty::OutlivesPredicate(mut ty, region) = outlives.skip_binder(); + + // In the new solver, normalize the type-outlives obligation assumptions. + if self.infcx.next_trait_solver() { + match deeply_normalize_with_skipped_universes( + self.infcx.at(&ObligationCause::misc(span, defining_ty_def_id), self.param_env), + ty, + vec![None; ty.outer_exclusive_binder().as_usize()], + ) { + Ok(normalized_ty) => { + ty = normalized_ty; + } + Err(e) => { + self.infcx.err_ctxt().report_fulfillment_errors(e); + } + } + } + + known_type_outlives_obligations + .push(outlives.rebind(ty::OutlivesPredicate(ty, region))); + } + let known_type_outlives_obligations = + self.infcx.tcx.arena.alloc_slice(&known_type_outlives_obligations); + let unnormalized_input_output_tys = self .universal_regions .unnormalized_input_tys @@ -239,7 +268,6 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> { // the `relations` is built. let mut normalized_inputs_and_output = Vec::with_capacity(self.universal_regions.unnormalized_input_tys.len() + 1); - let mut constraints = vec![]; for ty in unnormalized_input_output_tys { debug!("build: input_or_output={:?}", ty); // We add implied bounds from both the unnormalized and normalized ty. @@ -304,7 +332,19 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> { } for c in constraints { - self.push_region_constraints(c, span); + constraint_conversion::ConstraintConversion::new( + self.infcx, + &self.universal_regions, + &self.region_bound_pairs, + self.implicit_region_bound, + param_env, + known_type_outlives_obligations, + Locations::All(span), + span, + ConstraintCategory::Internal, + self.constraints, + ) + .convert_all(c); } CreateResult { @@ -313,30 +353,12 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> { outlives: self.outlives.freeze(), inverse_outlives: self.inverse_outlives.freeze(), }), - known_type_outlives_obligations: self.known_type_outlives_obligations, + known_type_outlives_obligations, region_bound_pairs: self.region_bound_pairs, normalized_inputs_and_output, } } - #[instrument(skip(self, data), level = "debug")] - fn push_region_constraints(&mut self, data: &QueryRegionConstraints<'tcx>, span: Span) { - debug!("constraints generated: {:#?}", data); - - constraint_conversion::ConstraintConversion::new( - self.infcx, - &self.universal_regions, - &self.region_bound_pairs, - self.implicit_region_bound, - self.known_type_outlives_obligations, - Locations::All(span), - span, - ConstraintCategory::Internal, - self.constraints, - ) - .convert_all(data); - } - /// Update the type of a single local, which should represent /// either the return type of the MIR or one of its arguments. At /// the same time, compute and add any implied bounds that come diff --git a/compiler/rustc_borrowck/src/type_check/mod.rs b/compiler/rustc_borrowck/src/type_check/mod.rs index 59c4d9a6c78ca..c65173baea57f 100644 --- a/compiler/rustc_borrowck/src/type_check/mod.rs +++ b/compiler/rustc_borrowck/src/type_check/mod.rs @@ -156,10 +156,6 @@ pub(crate) fn type_check<'mir, 'tcx>( } = free_region_relations::create( infcx, param_env, - // FIXME(-Znext-solver): These are unnormalized. Normalize them. - infcx.tcx.arena.alloc_from_iter( - param_env.caller_bounds().iter().filter_map(|clause| clause.as_type_outlives_clause()), - ), implicit_region_bound, universal_regions, &mut constraints, @@ -1136,6 +1132,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> { self.borrowck_context.universal_regions, self.region_bound_pairs, self.implicit_region_bound, + self.param_env, self.known_type_outlives_obligations, locations, locations.span(self.body), @@ -2740,6 +2737,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> { self.borrowck_context.universal_regions, self.region_bound_pairs, self.implicit_region_bound, + self.param_env, self.known_type_outlives_obligations, locations, DUMMY_SP, // irrelevant; will be overridden. diff --git a/tests/ui/traits/next-solver/normalize-type-outlives-in-param-env.rs b/tests/ui/traits/next-solver/normalize-type-outlives-in-param-env.rs new file mode 100644 index 0000000000000..7477c56cd5487 --- /dev/null +++ b/tests/ui/traits/next-solver/normalize-type-outlives-in-param-env.rs @@ -0,0 +1,18 @@ +// check-pass +// compile-flags: -Znext-solver + +trait Mirror { + type Assoc; +} + +impl Mirror for T { + type Assoc = T; +} + +fn is_static() {} + +fn test() where ::Assoc: 'static { + is_static::(); +} + +fn main() {} diff --git a/tests/ui/traits/next-solver/normalize-type-outlives.rs b/tests/ui/traits/next-solver/normalize-type-outlives.rs new file mode 100644 index 0000000000000..f50eb6326e239 --- /dev/null +++ b/tests/ui/traits/next-solver/normalize-type-outlives.rs @@ -0,0 +1,13 @@ +// check-pass + +trait Tr<'a> { + type Assoc; +} + +fn outlives<'o, T: 'o>() {} + +fn foo<'a, 'b, T: Tr<'a, Assoc = ()>>() { + outlives::<'b, T::Assoc>(); +} + +fn main() {} From a371059933c11c79f9583ec149d56774e87b940f Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Thu, 1 Feb 2024 18:04:16 +0000 Subject: [PATCH 20/25] Don't hang when there's an infinite loop of outlives obligations --- .../src/type_check/constraint_conversion.rs | 133 ++++++++++-------- .../src/infer/outlives/obligations.rs | 8 +- 2 files changed, 83 insertions(+), 58 deletions(-) diff --git a/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs b/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs index 71035eea5d175..4c224248945b3 100644 --- a/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs +++ b/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs @@ -154,74 +154,93 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { } = *self; let mut outlives_predicates = vec![(predicate, constraint_category)]; - while let Some((ty::OutlivesPredicate(k1, r2), constraint_category)) = - outlives_predicates.pop() - { - match k1.unpack() { - GenericArgKind::Lifetime(r1) => { - let r1_vid = self.to_region_vid(r1); - let r2_vid = self.to_region_vid(r2); - self.add_outlives(r1_vid, r2_vid, constraint_category); - } + for iteration in 0.. { + if outlives_predicates.is_empty() { + break; + } - GenericArgKind::Type(mut t1) => { - // Normalize the type we receive from a `TypeOutlives` obligation - // in the new trait solver. - if infcx.next_trait_solver() { - let result = CustomTypeOp::new( - |ocx| { - match deeply_normalize( - ocx.infcx.at( - &ObligationCause::dummy_with_span(self.span), - param_env, - ), - t1, - ) { - Ok(normalized_ty) => { - t1 = normalized_ty; - } - Err(e) => { - infcx.err_ctxt().report_fulfillment_errors(e); + if !self.tcx.recursion_limit().value_within_limit(iteration) { + bug!( + "FIXME(-Znext-solver): Overflowed when processing region obligations: {outlives_predicates:#?}" + ); + } + + let mut next_outlives_predicates = vec![]; + for (ty::OutlivesPredicate(k1, r2), constraint_category) in outlives_predicates { + match k1.unpack() { + GenericArgKind::Lifetime(r1) => { + let r1_vid = self.to_region_vid(r1); + let r2_vid = self.to_region_vid(r2); + self.add_outlives(r1_vid, r2_vid, constraint_category); + } + + GenericArgKind::Type(mut t1) => { + // Normalize the type we receive from a `TypeOutlives` obligation + // in the new trait solver. + if infcx.next_trait_solver() { + let result = CustomTypeOp::new( + |ocx| { + match deeply_normalize( + ocx.infcx.at( + &ObligationCause::dummy_with_span(self.span), + param_env, + ), + t1, + ) { + Ok(normalized_ty) => { + t1 = normalized_ty; + } + Err(e) => { + infcx.err_ctxt().report_fulfillment_errors(e); + } } - } - Ok(()) - }, - "normalize type outlives obligation", - ) - .fully_perform(infcx, self.span); + Ok(()) + }, + "normalize type outlives obligation", + ) + .fully_perform(infcx, self.span); - match result { - Ok(TypeOpOutput { output: (), constraints, .. }) => { - if let Some(constraints) = constraints { - assert!( - constraints.member_constraints.is_empty(), - "FIXME(-Znext-solver): How do I handle these?" - ); - outlives_predicates - .extend(constraints.outlives.iter().copied()); + match result { + Ok(TypeOpOutput { output: (), constraints, .. }) => { + if let Some(constraints) = constraints { + assert!( + constraints.member_constraints.is_empty(), + "no member constraints expected from normalizing: {:#?}", + constraints.member_constraints + ); + next_outlives_predicates + .extend(constraints.outlives.iter().copied()); + } } + Err(_) => {} } - Err(_) => {} } - } - // we don't actually use this for anything, but - // the `TypeOutlives` code needs an origin. - let origin = infer::RelateParamBound(DUMMY_SP, t1, None); + // we don't actually use this for anything, but + // the `TypeOutlives` code needs an origin. + let origin = infer::RelateParamBound(DUMMY_SP, t1, None); - TypeOutlives::new( - &mut *self, - tcx, - region_bound_pairs, - Some(implicit_region_bound), - known_type_outlives_obligations, - ) - .type_must_outlive(origin, t1, r2, constraint_category); - } + TypeOutlives::new( + &mut *self, + tcx, + region_bound_pairs, + Some(implicit_region_bound), + known_type_outlives_obligations, + ) + .type_must_outlive( + origin, + t1, + r2, + constraint_category, + ); + } - GenericArgKind::Const(_) => unreachable!(), + GenericArgKind::Const(_) => unreachable!(), + } } + + outlives_predicates = next_outlives_predicates; } } diff --git a/compiler/rustc_infer/src/infer/outlives/obligations.rs b/compiler/rustc_infer/src/infer/outlives/obligations.rs index cf68a60e280d1..c36d8556d17dd 100644 --- a/compiler/rustc_infer/src/infer/outlives/obligations.rs +++ b/compiler/rustc_infer/src/infer/outlives/obligations.rs @@ -154,12 +154,18 @@ impl<'tcx> InferCtxt<'tcx> { .map_err(|e| (e, SubregionOrigin::AscribeUserTypeProvePredicate(DUMMY_SP)))?; // Must loop since the process of normalizing may itself register region obligations. - loop { + for iteration in 0.. { let my_region_obligations = self.take_registered_region_obligations(); if my_region_obligations.is_empty() { break; } + if !self.tcx.recursion_limit().value_within_limit(iteration) { + bug!( + "FIXME(-Znext-solver): Overflowed when processing region obligations: {my_region_obligations:#?}" + ); + } + for RegionObligation { sup_type, sub_region, origin } in my_region_obligations { let sup_type = deeply_normalize_ty(sup_type, origin.clone()) .map_err(|e| (e, origin.clone()))?; From e951bcff96ac606aad3b7870c7fa64a4a48aa04b Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Fri, 2 Feb 2024 18:31:35 +0000 Subject: [PATCH 21/25] Normalize the whole PolyTypeOutlivesPredicate, more simplifications --- .../src/type_check/constraint_conversion.rs | 84 +++++++++---------- .../src/type_check/free_region_relations.rs | 17 ++-- .../src/infer/error_reporting/mod.rs | 7 +- .../src/infer/lexical_region_resolve/mod.rs | 2 +- .../rustc_infer/src/infer/outlives/mod.rs | 13 +-- .../src/infer/outlives/obligations.rs | 38 +++++---- compiler/rustc_trait_selection/src/regions.rs | 6 +- .../src/traits/auto_trait.rs | 2 +- .../next-solver/specialization-transmute.rs | 2 +- .../specialization-transmute.stderr | 2 +- 10 files changed, 92 insertions(+), 81 deletions(-) diff --git a/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs b/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs index 4c224248945b3..c97e31701669c 100644 --- a/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs +++ b/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs @@ -5,13 +5,11 @@ use rustc_infer::infer::outlives::obligations::{TypeOutlives, TypeOutlivesDelega use rustc_infer::infer::region_constraints::{GenericKind, VerifyBound}; use rustc_infer::infer::{self, InferCtxt, SubregionOrigin}; use rustc_middle::mir::{ClosureOutlivesSubject, ClosureRegionRequirements, ConstraintCategory}; +use rustc_middle::traits::query::NoSolution; use rustc_middle::traits::ObligationCause; -use rustc_middle::ty::GenericArgKind; -use rustc_middle::ty::{self, TyCtxt}; -use rustc_middle::ty::{TypeFoldable, TypeVisitableExt}; +use rustc_middle::ty::{self, GenericArgKind, Ty, TyCtxt, TypeFoldable, TypeVisitableExt}; use rustc_span::{Span, DUMMY_SP}; use rustc_trait_selection::solve::deeply_normalize; -use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt; use rustc_trait_selection::traits::query::type_op::custom::CustomTypeOp; use rustc_trait_selection::traits::query::type_op::{TypeOp, TypeOpOutput}; @@ -146,7 +144,6 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { let ConstraintConversion { tcx, infcx, - param_env, region_bound_pairs, implicit_region_bound, known_type_outlives_obligations, @@ -178,43 +175,10 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { // Normalize the type we receive from a `TypeOutlives` obligation // in the new trait solver. if infcx.next_trait_solver() { - let result = CustomTypeOp::new( - |ocx| { - match deeply_normalize( - ocx.infcx.at( - &ObligationCause::dummy_with_span(self.span), - param_env, - ), - t1, - ) { - Ok(normalized_ty) => { - t1 = normalized_ty; - } - Err(e) => { - infcx.err_ctxt().report_fulfillment_errors(e); - } - } - - Ok(()) - }, - "normalize type outlives obligation", - ) - .fully_perform(infcx, self.span); - - match result { - Ok(TypeOpOutput { output: (), constraints, .. }) => { - if let Some(constraints) = constraints { - assert!( - constraints.member_constraints.is_empty(), - "no member constraints expected from normalizing: {:#?}", - constraints.member_constraints - ); - next_outlives_predicates - .extend(constraints.outlives.iter().copied()); - } - } - Err(_) => {} - } + t1 = self.normalize_and_add_type_outlives_constraints( + t1, + &mut next_outlives_predicates, + ); } // we don't actually use this for anything, but @@ -306,6 +270,42 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { debug!("add_type_test(type_test={:?})", type_test); self.constraints.type_tests.push(type_test); } + + fn normalize_and_add_type_outlives_constraints( + &self, + ty: Ty<'tcx>, + next_outlives_predicates: &mut Vec<( + ty::OutlivesPredicate, ty::Region<'tcx>>, + ConstraintCategory<'tcx>, + )>, + ) -> Ty<'tcx> { + let result = CustomTypeOp::new( + |ocx| { + deeply_normalize( + ocx.infcx.at(&ObligationCause::dummy_with_span(self.span), self.param_env), + ty, + ) + .map_err(|_| NoSolution) + }, + "normalize type outlives obligation", + ) + .fully_perform(self.infcx, self.span); + + match result { + Ok(TypeOpOutput { output: ty, constraints, .. }) => { + if let Some(constraints) = constraints { + assert!( + constraints.member_constraints.is_empty(), + "no member constraints expected from normalizing: {:#?}", + constraints.member_constraints + ); + next_outlives_predicates.extend(constraints.outlives.iter().copied()); + } + ty + } + Err(_) => ty, + } + } } impl<'a, 'b, 'tcx> TypeOutlivesDelegate<'tcx> for &'a mut ConstraintConversion<'b, 'tcx> { diff --git a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs index 4d53a53ee197b..2e0caf4481902 100644 --- a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs +++ b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs @@ -11,7 +11,7 @@ use rustc_middle::traits::query::OutlivesBound; use rustc_middle::traits::ObligationCause; use rustc_middle::ty::{self, RegionVid, Ty, TypeVisitableExt}; use rustc_span::{ErrorGuaranteed, DUMMY_SP}; -use rustc_trait_selection::solve::deeply_normalize_with_skipped_universes; +use rustc_trait_selection::solve::deeply_normalize; use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt; use rustc_trait_selection::traits::query::type_op::{self, TypeOp}; use std::rc::Rc; @@ -226,18 +226,16 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> { let mut constraints = vec![]; let mut known_type_outlives_obligations = vec![]; for bound in param_env.caller_bounds() { - let Some(outlives) = bound.as_type_outlives_clause() else { continue }; - let ty::OutlivesPredicate(mut ty, region) = outlives.skip_binder(); + let Some(mut outlives) = bound.as_type_outlives_clause() else { continue }; // In the new solver, normalize the type-outlives obligation assumptions. if self.infcx.next_trait_solver() { - match deeply_normalize_with_skipped_universes( + match deeply_normalize( self.infcx.at(&ObligationCause::misc(span, defining_ty_def_id), self.param_env), - ty, - vec![None; ty.outer_exclusive_binder().as_usize()], + outlives, ) { - Ok(normalized_ty) => { - ty = normalized_ty; + Ok(normalized_outlives) => { + outlives = normalized_outlives; } Err(e) => { self.infcx.err_ctxt().report_fulfillment_errors(e); @@ -245,8 +243,7 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> { } } - known_type_outlives_obligations - .push(outlives.rebind(ty::OutlivesPredicate(ty, region))); + known_type_outlives_obligations.push(outlives); } let known_type_outlives_obligations = self.infcx.tcx.arena.alloc_slice(&known_type_outlives_obligations); diff --git a/compiler/rustc_infer/src/infer/error_reporting/mod.rs b/compiler/rustc_infer/src/infer/error_reporting/mod.rs index b8344310d5dfd..f74e13db44795 100644 --- a/compiler/rustc_infer/src/infer/error_reporting/mod.rs +++ b/compiler/rustc_infer/src/infer/error_reporting/mod.rs @@ -71,6 +71,7 @@ use rustc_hir::lang_items::LangItem; use rustc_middle::dep_graph::DepContext; use rustc_middle::ty::print::{with_forced_trimmed_paths, PrintError}; use rustc_middle::ty::relate::{self, RelateResult, TypeRelation}; +use rustc_middle::ty::ToPredicate; use rustc_middle::ty::{ self, error::TypeError, IsSuggestable, List, Region, Ty, TyCtxt, TypeFoldable, TypeSuperVisitable, TypeVisitable, TypeVisitableExt, @@ -519,10 +520,12 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { self.report_placeholder_failure(sup_origin, sub_r, sup_r).emit(); } - RegionResolutionError::CannotNormalize(ty, origin) => { + RegionResolutionError::CannotNormalize(clause, origin) => { + let clause: ty::Clause<'tcx> = + clause.map_bound(ty::ClauseKind::TypeOutlives).to_predicate(self.tcx); self.tcx .dcx() - .struct_span_err(origin.span(), format!("cannot normalize `{ty}`")) + .struct_span_err(origin.span(), format!("cannot normalize `{clause}`")) .emit(); } } diff --git a/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs b/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs index 4a1169e68e087..6137506d4a994 100644 --- a/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs +++ b/compiler/rustc_infer/src/infer/lexical_region_resolve/mod.rs @@ -99,7 +99,7 @@ pub enum RegionResolutionError<'tcx> { Region<'tcx>, // the placeholder `'b` ), - CannotNormalize(Ty<'tcx>, SubregionOrigin<'tcx>), + CannotNormalize(ty::PolyTypeOutlivesPredicate<'tcx>, SubregionOrigin<'tcx>), } impl<'tcx> RegionResolutionError<'tcx> { diff --git a/compiler/rustc_infer/src/infer/outlives/mod.rs b/compiler/rustc_infer/src/infer/outlives/mod.rs index 926e198b21915..a4f9316b5020f 100644 --- a/compiler/rustc_infer/src/infer/outlives/mod.rs +++ b/compiler/rustc_infer/src/infer/outlives/mod.rs @@ -4,8 +4,8 @@ use super::region_constraints::RegionConstraintData; use super::{InferCtxt, RegionResolutionError, SubregionOrigin}; use crate::infer::free_regions::RegionRelations; use crate::infer::lexical_region_resolve; -use rustc_middle::traits::query::OutlivesBound; -use rustc_middle::ty::{self, Ty}; +use rustc_middle::traits::query::{NoSolution, OutlivesBound}; +use rustc_middle::ty; pub mod components; pub mod env; @@ -49,12 +49,15 @@ impl<'tcx> InferCtxt<'tcx> { pub fn resolve_regions_with_normalize( &self, outlives_env: &OutlivesEnvironment<'tcx>, - deeply_normalize_ty: impl Fn(Ty<'tcx>, SubregionOrigin<'tcx>) -> Result, Ty<'tcx>>, + deeply_normalize_ty: impl Fn( + ty::PolyTypeOutlivesPredicate<'tcx>, + SubregionOrigin<'tcx>, + ) -> Result, NoSolution>, ) -> Vec> { match self.process_registered_region_obligations(outlives_env, deeply_normalize_ty) { Ok(()) => {} - Err((ty, origin)) => { - return vec![RegionResolutionError::CannotNormalize(ty, origin)]; + Err((clause, origin)) => { + return vec![RegionResolutionError::CannotNormalize(clause, origin)]; } }; diff --git a/compiler/rustc_infer/src/infer/outlives/obligations.rs b/compiler/rustc_infer/src/infer/outlives/obligations.rs index c36d8556d17dd..7208f17fb340f 100644 --- a/compiler/rustc_infer/src/infer/outlives/obligations.rs +++ b/compiler/rustc_infer/src/infer/outlives/obligations.rs @@ -68,8 +68,9 @@ use crate::infer::{ use crate::traits::{ObligationCause, ObligationCauseCode}; use rustc_data_structures::undo_log::UndoLogs; use rustc_middle::mir::ConstraintCategory; -use rustc_middle::ty::GenericArgKind; +use rustc_middle::traits::query::NoSolution; use rustc_middle::ty::{self, GenericArgsRef, Region, Ty, TyCtxt, TypeVisitableExt}; +use rustc_middle::ty::{GenericArgKind, PolyTypeOutlivesPredicate}; use rustc_span::DUMMY_SP; use smallvec::smallvec; @@ -125,11 +126,15 @@ impl<'tcx> InferCtxt<'tcx> { /// invoked after all type-inference variables have been bound -- /// right before lexical region resolution. #[instrument(level = "debug", skip(self, outlives_env, deeply_normalize_ty))] - pub fn process_registered_region_obligations( + pub fn process_registered_region_obligations( &self, outlives_env: &OutlivesEnvironment<'tcx>, - mut deeply_normalize_ty: impl FnMut(Ty<'tcx>, SubregionOrigin<'tcx>) -> Result, E>, - ) -> Result<(), (E, SubregionOrigin<'tcx>)> { + mut deeply_normalize_ty: impl FnMut( + PolyTypeOutlivesPredicate<'tcx>, + SubregionOrigin<'tcx>, + ) + -> Result, NoSolution>, + ) -> Result<(), (PolyTypeOutlivesPredicate<'tcx>, SubregionOrigin<'tcx>)> { assert!(!self.in_snapshot(), "cannot process registered region obligations in a snapshot"); let normalized_caller_bounds: Vec<_> = outlives_env @@ -137,21 +142,19 @@ impl<'tcx> InferCtxt<'tcx> { .caller_bounds() .iter() .filter_map(|clause| { - let bound_clause = clause.kind(); - let ty::ClauseKind::TypeOutlives(outlives) = bound_clause.skip_binder() else { - return None; - }; + let outlives = clause.as_type_outlives_clause()?; Some( deeply_normalize_ty( - outlives.0, + outlives, SubregionOrigin::AscribeUserTypeProvePredicate(DUMMY_SP), ) - .map(|ty| bound_clause.rebind(ty::OutlivesPredicate(ty, outlives.1))), + // FIXME(-Znext-solver): How do we accurately report an error span here :( + .map_err(|NoSolution| { + (outlives, SubregionOrigin::AscribeUserTypeProvePredicate(DUMMY_SP)) + }), ) }) - // FIXME(-Znext-solver): How do we accurately report an error here :( - .try_collect() - .map_err(|e| (e, SubregionOrigin::AscribeUserTypeProvePredicate(DUMMY_SP)))?; + .try_collect()?; // Must loop since the process of normalizing may itself register region obligations. for iteration in 0.. { @@ -167,8 +170,13 @@ impl<'tcx> InferCtxt<'tcx> { } for RegionObligation { sup_type, sub_region, origin } in my_region_obligations { - let sup_type = deeply_normalize_ty(sup_type, origin.clone()) - .map_err(|e| (e, origin.clone()))?; + let outlives = ty::Binder::dummy(ty::OutlivesPredicate(sup_type, sub_region)); + let ty::OutlivesPredicate(sup_type, sub_region) = + deeply_normalize_ty(outlives, origin.clone()) + .map_err(|NoSolution| (outlives, origin.clone()))? + .no_bound_vars() + .expect("started with no bound vars, should end with no bound vars"); + debug!(?sup_type, ?sub_region, ?origin); let outlives = &mut TypeOutlives::new( diff --git a/compiler/rustc_trait_selection/src/regions.rs b/compiler/rustc_trait_selection/src/regions.rs index e5a7b27446b4a..756db7cc2063f 100644 --- a/compiler/rustc_trait_selection/src/regions.rs +++ b/compiler/rustc_trait_selection/src/regions.rs @@ -1,5 +1,6 @@ use rustc_infer::infer::outlives::env::OutlivesEnvironment; use rustc_infer::infer::{InferCtxt, RegionResolutionError}; +use rustc_middle::traits::query::NoSolution; use rustc_middle::traits::ObligationCause; pub trait InferCtxtRegionExt<'tcx> { @@ -24,15 +25,14 @@ impl<'tcx> InferCtxtRegionExt<'tcx> for InferCtxt<'tcx> { let ty = self.resolve_vars_if_possible(ty); if self.next_trait_solver() { - crate::solve::deeply_normalize_with_skipped_universes( + crate::solve::deeply_normalize( self.at( &ObligationCause::dummy_with_span(origin.span()), outlives_env.param_env, ), ty, - vec![None; ty.outer_exclusive_binder().as_usize()], ) - .map_err(|_| ty) + .map_err(|_| NoSolution) } else { Ok(ty) } diff --git a/compiler/rustc_trait_selection/src/traits/auto_trait.rs b/compiler/rustc_trait_selection/src/traits/auto_trait.rs index 7933654a91546..81c72fc4b7b03 100644 --- a/compiler/rustc_trait_selection/src/traits/auto_trait.rs +++ b/compiler/rustc_trait_selection/src/traits/auto_trait.rs @@ -179,7 +179,7 @@ impl<'tcx> AutoTraitFinder<'tcx> { } let outlives_env = OutlivesEnvironment::new(full_env); - let _ = infcx.process_registered_region_obligations::(&outlives_env, |ty, _| Ok(ty)); + let _ = infcx.process_registered_region_obligations(&outlives_env, |ty, _| Ok(ty)); let region_data = infcx.inner.borrow_mut().unwrap_region_constraints().region_constraint_data().clone(); diff --git a/tests/ui/traits/next-solver/specialization-transmute.rs b/tests/ui/traits/next-solver/specialization-transmute.rs index e7de564877d09..a0855dd1e1714 100644 --- a/tests/ui/traits/next-solver/specialization-transmute.rs +++ b/tests/ui/traits/next-solver/specialization-transmute.rs @@ -1,5 +1,5 @@ // compile-flags: -Znext-solver -//~^ ERROR cannot normalize `::Id` +//~^ ERROR cannot normalize `::Id: '_` #![feature(specialization)] //~^ WARN the feature `specialization` is incomplete diff --git a/tests/ui/traits/next-solver/specialization-transmute.stderr b/tests/ui/traits/next-solver/specialization-transmute.stderr index a1cf5b761e34f..3100a92e3eb4d 100644 --- a/tests/ui/traits/next-solver/specialization-transmute.stderr +++ b/tests/ui/traits/next-solver/specialization-transmute.stderr @@ -8,7 +8,7 @@ LL | #![feature(specialization)] = help: consider using `min_specialization` instead, which is more stable and complete = note: `#[warn(incomplete_features)]` on by default -error: cannot normalize `::Id` +error: cannot normalize `::Id: '_` error[E0282]: type annotations needed --> $DIR/specialization-transmute.rs:14:23 From 9f58cf43c78e77b59479da2beaea0265f529280e Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Sat, 27 Jan 2024 13:47:29 +0100 Subject: [PATCH 22/25] get rid of nontrivial_structural_match lint and custom_eq const qualif --- .../src/transform/check_consts/check.rs | 29 +---- .../src/transform/check_consts/qualifs.rs | 32 +---- compiler/rustc_lint/src/lib.rs | 5 + compiler/rustc_lint_defs/src/builtin.rs | 43 +------ compiler/rustc_middle/src/mir/query.rs | 3 +- .../src/thir/pattern/const_to_pat.rs | 113 +++++------------- .../rustc_mir_build/src/thir/pattern/mod.rs | 18 +-- ...corner_cases.rs => accept_corner_cases.rs} | 11 +- .../const_in_pattern/custom-eq-branch-pass.rs | 3 +- .../const_in_pattern/custom-eq-branch-warn.rs | 38 ------ .../custom-eq-branch-warn.stderr | 14 --- .../const_in_pattern/issue-73431.stderr | 1 - .../const_in_pattern/warn_corner_cases.stderr | 36 ------ ...2307-match-ref-ref-forbidden-without-eq.rs | 2 +- ...-match-ref-ref-forbidden-without-eq.stderr | 2 +- 15 files changed, 53 insertions(+), 297 deletions(-) rename tests/ui/consts/const_in_pattern/{warn_corner_cases.rs => accept_corner_cases.rs} (76%) delete mode 100644 tests/ui/consts/const_in_pattern/custom-eq-branch-warn.rs delete mode 100644 tests/ui/consts/const_in_pattern/custom-eq-branch-warn.stderr delete mode 100644 tests/ui/consts/const_in_pattern/issue-73431.stderr delete mode 100644 tests/ui/consts/const_in_pattern/warn_corner_cases.stderr diff --git a/compiler/rustc_const_eval/src/transform/check_consts/check.rs b/compiler/rustc_const_eval/src/transform/check_consts/check.rs index 89c65d9232586..5ff81615552bf 100644 --- a/compiler/rustc_const_eval/src/transform/check_consts/check.rs +++ b/compiler/rustc_const_eval/src/transform/check_consts/check.rs @@ -20,7 +20,7 @@ use std::mem; use std::ops::{ControlFlow, Deref}; use super::ops::{self, NonConstOp, Status}; -use super::qualifs::{self, CustomEq, HasMutInterior, NeedsDrop, NeedsNonConstDrop}; +use super::qualifs::{self, HasMutInterior, NeedsDrop, NeedsNonConstDrop}; use super::resolver::FlowSensitiveAnalysis; use super::{ConstCx, Qualif}; use crate::const_eval::is_unstable_const_fn; @@ -149,37 +149,10 @@ impl<'mir, 'tcx> Qualifs<'mir, 'tcx> { let return_loc = ccx.body.terminator_loc(return_block); - let custom_eq = match ccx.const_kind() { - // We don't care whether a `const fn` returns a value that is not structurally - // matchable. Functions calls are opaque and always use type-based qualification, so - // this value should never be used. - hir::ConstContext::ConstFn => true, - - // If we know that all values of the return type are structurally matchable, there's no - // need to run dataflow. - // Opaque types do not participate in const generics or pattern matching, so we can safely count them out. - _ if ccx.body.return_ty().has_opaque_types() - || !CustomEq::in_any_value_of_ty(ccx, ccx.body.return_ty()) => - { - false - } - - hir::ConstContext::Const { .. } | hir::ConstContext::Static(_) => { - let mut cursor = FlowSensitiveAnalysis::new(CustomEq, ccx) - .into_engine(ccx.tcx, ccx.body) - .iterate_to_fixpoint() - .into_results_cursor(ccx.body); - - cursor.seek_after_primary_effect(return_loc); - cursor.get().contains(RETURN_PLACE) - } - }; - ConstQualifs { needs_drop: self.needs_drop(ccx, RETURN_PLACE, return_loc), needs_non_const_drop: self.needs_non_const_drop(ccx, RETURN_PLACE, return_loc), has_mut_interior: self.has_mut_interior(ccx, RETURN_PLACE, return_loc), - custom_eq, tainted_by_errors, } } diff --git a/compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs b/compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs index 1efa52df5817b..67fef20807910 100644 --- a/compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs +++ b/compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs @@ -10,7 +10,7 @@ use rustc_middle::mir::*; use rustc_middle::traits::BuiltinImplSource; use rustc_middle::ty::{self, AdtDef, GenericArgsRef, Ty}; use rustc_trait_selection::traits::{ - self, ImplSource, Obligation, ObligationCause, ObligationCtxt, SelectionContext, + ImplSource, Obligation, ObligationCause, ObligationCtxt, SelectionContext, }; use super::ConstCx; @@ -24,7 +24,6 @@ pub fn in_any_value_of_ty<'tcx>( has_mut_interior: HasMutInterior::in_any_value_of_ty(cx, ty), needs_drop: NeedsDrop::in_any_value_of_ty(cx, ty), needs_non_const_drop: NeedsNonConstDrop::in_any_value_of_ty(cx, ty), - custom_eq: CustomEq::in_any_value_of_ty(cx, ty), tainted_by_errors, } } @@ -213,35 +212,6 @@ impl Qualif for NeedsNonConstDrop { } } -/// A constant that cannot be used as part of a pattern in a `match` expression. -pub struct CustomEq; - -impl Qualif for CustomEq { - const ANALYSIS_NAME: &'static str = "flow_custom_eq"; - - fn in_qualifs(qualifs: &ConstQualifs) -> bool { - qualifs.custom_eq - } - - fn in_any_value_of_ty<'tcx>(cx: &ConstCx<'_, 'tcx>, ty: Ty<'tcx>) -> bool { - // If *any* component of a composite data type does not implement `Structural{Partial,}Eq`, - // we know that at least some values of that type are not structural-match. I say "some" - // because that component may be part of an enum variant (e.g., - // `Option::::Some`), in which case some values of this type may be - // structural-match (`Option::None`). - traits::search_for_structural_match_violation(cx.body.span, cx.tcx, ty).is_some() - } - - fn in_adt_inherently<'tcx>( - cx: &ConstCx<'_, 'tcx>, - def: AdtDef<'tcx>, - args: GenericArgsRef<'tcx>, - ) -> bool { - let ty = Ty::new_adt(cx.tcx, def, args); - !ty.is_structural_eq_shallow(cx.tcx) - } -} - // FIXME: Use `mir::visit::Visitor` for the `in_*` functions if/when it supports early return. /// Returns `true` if this `Rvalue` contains qualif `Q`. diff --git a/compiler/rustc_lint/src/lib.rs b/compiler/rustc_lint/src/lib.rs index 0a15671e68692..1c03de410ee7d 100644 --- a/compiler/rustc_lint/src/lib.rs +++ b/compiler/rustc_lint/src/lib.rs @@ -520,6 +520,11 @@ fn register_builtins(store: &mut LintStore) { "illegal_floating_point_literal_pattern", "no longer a warning, float patterns behave the same as `==`", ); + store.register_removed( + "nontrivial_structural_match", + "no longer needed, see RFC #3535 \ + for more information", + ); } fn register_internals(store: &mut LintStore) { diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs index 07c0e75a71c96..e4298a2636f9f 100644 --- a/compiler/rustc_lint_defs/src/builtin.rs +++ b/compiler/rustc_lint_defs/src/builtin.rs @@ -3,6 +3,9 @@ //! These are the built-in lints that are emitted direct in the main //! compiler code, rather than using their own custom pass. Those //! lints are all available in `rustc_lint::builtin`. +//! +//! When removing a lint, make sure to also add a call to `register_removed` in +//! compiler/rustc_lint/src/lib.rs. use crate::{declare_lint, declare_lint_pass, FutureIncompatibilityReason}; use rustc_span::edition::Edition; @@ -66,7 +69,6 @@ declare_lint_pass! { MUST_NOT_SUSPEND, NAMED_ARGUMENTS_USED_POSITIONALLY, NON_EXHAUSTIVE_OMITTED_PATTERNS, - NONTRIVIAL_STRUCTURAL_MATCH, ORDER_DEPENDENT_TRAIT_OBJECTS, OVERLAPPING_RANGE_ENDPOINTS, PATTERNS_IN_FNS_WITHOUT_BODY, @@ -2341,45 +2343,6 @@ declare_lint! { }; } -declare_lint! { - /// The `nontrivial_structural_match` lint detects constants that are used in patterns, - /// whose type is not structural-match and whose initializer body actually uses values - /// that are not structural-match. So `Option` is ok if the constant - /// is just `None`. - /// - /// ### Example - /// - /// ```rust,compile_fail - /// #![deny(nontrivial_structural_match)] - /// - /// #[derive(Copy, Clone, Debug)] - /// struct NoDerive(u32); - /// impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } } - /// impl Eq for NoDerive { } - /// fn main() { - /// const INDEX: Option = [None, Some(NoDerive(10))][0]; - /// match None { Some(_) => panic!("whoops"), INDEX => dbg!(INDEX), }; - /// } - /// ``` - /// - /// {{produces}} - /// - /// ### Explanation - /// - /// Previous versions of Rust accepted constants in patterns, even if those constants' types - /// did not have `PartialEq` derived. Thus the compiler falls back to runtime execution of - /// `PartialEq`, which can report that two constants are not equal even if they are - /// bit-equivalent. - pub NONTRIVIAL_STRUCTURAL_MATCH, - Warn, - "constant used in pattern of non-structural-match type and the constant's initializer \ - expression contains values of non-structural-match types", - @future_incompatible = FutureIncompatibleInfo { - reason: FutureIncompatibilityReason::FutureReleaseErrorDontReportInDeps, - reference: "issue #73448 ", - }; -} - declare_lint! { /// The `const_patterns_without_partial_eq` lint detects constants that are used in patterns, /// whose type does not implement `PartialEq`. diff --git a/compiler/rustc_middle/src/mir/query.rs b/compiler/rustc_middle/src/mir/query.rs index 98642adc19090..90b6df1dd1f5e 100644 --- a/compiler/rustc_middle/src/mir/query.rs +++ b/compiler/rustc_middle/src/mir/query.rs @@ -189,7 +189,7 @@ pub struct BorrowCheckResult<'tcx> { /// The result of the `mir_const_qualif` query. /// -/// Each field (except `error_occurred`) corresponds to an implementer of the `Qualif` trait in +/// Each field (except `tainted_by_errors`) corresponds to an implementer of the `Qualif` trait in /// `rustc_const_eval/src/transform/check_consts/qualifs.rs`. See that file for more information on each /// `Qualif`. #[derive(Clone, Copy, Debug, Default, TyEncodable, TyDecodable, HashStable)] @@ -197,7 +197,6 @@ pub struct ConstQualifs { pub has_mut_interior: bool, pub needs_drop: bool, pub needs_non_const_drop: bool, - pub custom_eq: bool, pub tainted_by_errors: Option, } diff --git a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs index 9d3a9bf6745e7..18a00724c3d0e 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs @@ -1,6 +1,5 @@ use rustc_apfloat::Float; use rustc_hir as hir; -use rustc_hir::def_id::DefId; use rustc_index::Idx; use rustc_infer::infer::{InferCtxt, TyCtxtInferExt}; use rustc_infer::traits::Obligation; @@ -17,8 +16,8 @@ use std::cell::Cell; use super::PatCtxt; use crate::errors::{ - IndirectStructuralMatch, InvalidPattern, NaNPattern, NonPartialEqMatch, - NontrivialStructuralMatch, PointerPattern, TypeNotStructural, UnionPattern, UnsizedPattern, + IndirectStructuralMatch, InvalidPattern, NaNPattern, NonPartialEqMatch, PointerPattern, + TypeNotStructural, UnionPattern, UnsizedPattern, }; impl<'a, 'tcx> PatCtxt<'a, 'tcx> { @@ -33,11 +32,10 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> { cv: mir::Const<'tcx>, id: hir::HirId, span: Span, - check_body_for_struct_match_violation: Option, ) -> Box> { let infcx = self.tcx.infer_ctxt().build(); let mut convert = ConstToPat::new(self, id, span, infcx); - convert.to_pat(cv, check_body_for_struct_match_violation) + convert.to_pat(cv) } } @@ -103,11 +101,7 @@ impl<'tcx> ConstToPat<'tcx> { ty.is_structural_eq_shallow(self.infcx.tcx) } - fn to_pat( - &mut self, - cv: mir::Const<'tcx>, - check_body_for_struct_match_violation: Option, - ) -> Box> { + fn to_pat(&mut self, cv: mir::Const<'tcx>) -> Box> { trace!(self.treat_byte_string_as_slice); // This method is just a wrapper handling a validity check; the heavy lifting is // performed by the recursive `recur` method, which is not meant to be @@ -116,14 +110,6 @@ impl<'tcx> ConstToPat<'tcx> { // once indirect_structural_match is a full fledged error, this // level of indirection can be eliminated - let mir_structural_match_violation = check_body_for_struct_match_violation.map(|def_id| { - // `mir_const_qualif` must be called with the `DefId` of the item where the const is - // defined, not where it is declared. The difference is significant for associated - // constants. - self.tcx().mir_const_qualif(def_id).custom_eq - }); - debug!(?check_body_for_struct_match_violation, ?mir_structural_match_violation); - let have_valtree = matches!(cv, mir::Const::Ty(c) if matches!(c.kind(), ty::ConstKind::Value(_))); let inlined_const_as_pat = match cv { @@ -137,15 +123,15 @@ impl<'tcx> ConstToPat<'tcx> { | ty::ConstKind::Expr(_) => { span_bug!(self.span, "unexpected const in `to_pat`: {:?}", c.kind()) } - ty::ConstKind::Value(valtree) => self - .recur(valtree, cv.ty(), mir_structural_match_violation.unwrap_or(false)) - .unwrap_or_else(|_: FallbackToOpaqueConst| { + ty::ConstKind::Value(valtree) => { + self.recur(valtree, cv.ty()).unwrap_or_else(|_: FallbackToOpaqueConst| { Box::new(Pat { span: self.span, ty: cv.ty(), kind: PatKind::Constant { value: cv }, }) - }), + }) + } }, mir::Const::Unevaluated(_, _) => { span_bug!(self.span, "unevaluated const in `to_pat`: {cv:?}") @@ -160,7 +146,12 @@ impl<'tcx> ConstToPat<'tcx> { if self.saw_const_match_error.get().is_none() { // If we were able to successfully convert the const to some pat (possibly with some // lints, but no errors), double-check that all types in the const implement - // `Structural` and `PartialEq`. + // `PartialEq`. Even if we have a valtree, we may have found something + // in there with non-structural-equality, meaning we match using `PartialEq` + // and we hence have to check that that impl exists. + // This is all messy but not worth cleaning up: at some point we'll emit + // a hard error when we don't have a valtree or when we find something in + // the valtree that is not structural; then this can all be made a lot simpler. let structural = traits::search_for_structural_match_violation(self.span, self.tcx(), cv.ty()); @@ -170,19 +161,12 @@ impl<'tcx> ConstToPat<'tcx> { structural ); - // This can occur because const qualification treats all associated constants as - // opaque, whereas `search_for_structural_match_violation` tries to monomorphize them - // before it runs. - // - // FIXME(#73448): Find a way to bring const qualification into parity with - // `search_for_structural_match_violation`. - if structural.is_none() && mir_structural_match_violation.unwrap_or(false) { - warn!("MIR const-checker found novel structural match violation. See #73448."); - return inlined_const_as_pat; - } - if let Some(non_sm_ty) = structural { if !self.type_has_partial_eq_impl(cv.ty()) { + // This is reachable and important even if we have a valtree: there might be + // non-structural things in a valtree, in which case we fall back to `PartialEq` + // comparison, in which case we better make sure the trait is implemented for + // each inner type (and not just for the surrounding type). let e = if let ty::Adt(def, ..) = non_sm_ty.kind() { if def.is_union() { let err = UnionPattern { span: self.span }; @@ -201,35 +185,18 @@ impl<'tcx> ConstToPat<'tcx> { // We errored. Signal that in the pattern, so that follow up errors can be silenced. let kind = PatKind::Error(e); return Box::new(Pat { span: self.span, ty: cv.ty(), kind }); - } else if let ty::Adt(..) = cv.ty().kind() - && matches!(cv, mir::Const::Val(..)) - { - // This branch is only entered when the current `cv` is `mir::Const::Val`. - // This is because `mir::Const::ty` has already been handled by `Self::recur` - // and the invalid types may be ignored. + } else if !have_valtree { + // Not being structural prevented us from constructing a valtree, + // so this is definitely a case we want to reject. let err = TypeNotStructural { span: self.span, non_sm_ty }; let e = self.tcx().dcx().emit_err(err); let kind = PatKind::Error(e); return Box::new(Pat { span: self.span, ty: cv.ty(), kind }); - } else if !self.saw_const_match_lint.get() { - if let Some(mir_structural_match_violation) = mir_structural_match_violation { - match non_sm_ty.kind() { - ty::Adt(..) if mir_structural_match_violation => { - self.tcx().emit_node_span_lint( - lint::builtin::INDIRECT_STRUCTURAL_MATCH, - self.id, - self.span, - IndirectStructuralMatch { non_sm_ty }, - ); - } - _ => { - debug!( - "`search_for_structural_match_violation` found one, but `CustomEq` was \ - not in the qualifs for that `const`" - ); - } - } - } + } else { + // This could be a violation in an inactive enum variant. + // Since we have a valtree, we trust that we have traversed the full valtree and + // complained about structural match violations there, so we don't + // have to check anything any more. } } else if !have_valtree && !self.saw_const_match_lint.get() { // The only way valtree construction can fail without the structural match @@ -299,7 +266,7 @@ impl<'tcx> ConstToPat<'tcx> { let field = FieldIdx::new(idx); // Patterns can only use monomorphic types. let ty = self.tcx().normalize_erasing_regions(self.param_env, ty); - Ok(FieldPat { field, pattern: self.recur(val, ty, false)? }) + Ok(FieldPat { field, pattern: self.recur(val, ty)? }) }) .collect() } @@ -310,7 +277,6 @@ impl<'tcx> ConstToPat<'tcx> { &self, cv: ValTree<'tcx>, ty: Ty<'tcx>, - mir_structural_match_violation: bool, ) -> Result>, FallbackToOpaqueConst> { let id = self.id; let span = self.span; @@ -395,7 +361,7 @@ impl<'tcx> ConstToPat<'tcx> { prefix: cv .unwrap_branch() .iter() - .map(|val| self.recur(*val, *elem_ty, false)) + .map(|val| self.recur(*val, *elem_ty)) .collect::>()?, slice: None, suffix: Box::new([]), @@ -404,7 +370,7 @@ impl<'tcx> ConstToPat<'tcx> { prefix: cv .unwrap_branch() .iter() - .map(|val| self.recur(*val, *elem_ty, false)) + .map(|val| self.recur(*val, *elem_ty)) .collect::>()?, slice: None, suffix: Box::new([]), @@ -471,7 +437,7 @@ impl<'tcx> ConstToPat<'tcx> { _ => *pointee_ty, }; // References have the same valtree representation as their pointee. - let subpattern = self.recur(cv, pointee_ty, false)?; + let subpattern = self.recur(cv, pointee_ty)?; self.behind_reference.set(old); PatKind::Deref { subpattern } } @@ -512,25 +478,6 @@ impl<'tcx> ConstToPat<'tcx> { } }; - if self.saw_const_match_error.get().is_none() - && !self.saw_const_match_lint.get() - && mir_structural_match_violation - // FIXME(#73448): Find a way to bring const qualification into parity with - // `search_for_structural_match_violation` and then remove this condition. - - // Obtain the actual type that isn't annotated. If we just looked at `cv.ty` we - // could get `Option`, even though `Option` is annotated with derive. - && let Some(non_sm_ty) = traits::search_for_structural_match_violation(span, tcx, ty) - { - self.saw_const_match_lint.set(true); - tcx.emit_node_span_lint( - lint::builtin::NONTRIVIAL_STRUCTURAL_MATCH, - id, - span, - NontrivialStructuralMatch { non_sm_ty }, - ); - } - Ok(Box::new(Pat { span, ty, kind })) } } diff --git a/compiler/rustc_mir_build/src/thir/pattern/mod.rs b/compiler/rustc_mir_build/src/thir/pattern/mod.rs index 2190ad14b5511..1a5cf13e28978 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/mod.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/mod.rs @@ -542,7 +542,7 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> { match const_value { Ok(const_) => { - let pattern = self.const_to_pat(const_, id, span, Some(instance.def_id())); + let pattern = self.const_to_pat(const_, id, span); if !is_associated_const { return pattern; @@ -612,7 +612,7 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> { }; if let Some(lit_input) = lit_input { match tcx.at(expr.span).lit_to_const(lit_input) { - Ok(c) => return self.const_to_pat(Const::Ty(c), id, span, None).kind, + Ok(c) => return self.const_to_pat(Const::Ty(c), id, span).kind, // If an error occurred, ignore that it's a literal // and leave reporting the error up to const eval of // the unevaluated constant below. @@ -635,17 +635,13 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> { if let Ok(Some(valtree)) = self.tcx.const_eval_resolve_for_typeck(self.param_env, ct, Some(span)) { - let subpattern = self.const_to_pat( - Const::Ty(ty::Const::new_value(self.tcx, valtree, ty)), - id, - span, - None, - ); + let subpattern = + self.const_to_pat(Const::Ty(ty::Const::new_value(self.tcx, valtree, ty)), id, span); PatKind::InlineConstant { subpattern, def: def_id } } else { // If that fails, convert it to an opaque constant pattern. match tcx.const_eval_resolve(self.param_env, uneval, Some(span)) { - Ok(val) => self.const_to_pat(mir::Const::Val(val, ty), id, span, None).kind, + Ok(val) => self.const_to_pat(mir::Const::Val(val, ty), id, span).kind, Err(ErrorHandled::TooGeneric(_)) => { // If we land here it means the const can't be evaluated because it's `TooGeneric`. let e = self.tcx.dcx().emit_err(ConstPatternDependsOnGenericParameter { span }); @@ -681,9 +677,7 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> { let lit_input = LitToConstInput { lit: &lit.node, ty: self.typeck_results.expr_ty(expr), neg }; match self.tcx.at(expr.span).lit_to_const(lit_input) { - Ok(constant) => { - self.const_to_pat(Const::Ty(constant), expr.hir_id, lit.span, None).kind - } + Ok(constant) => self.const_to_pat(Const::Ty(constant), expr.hir_id, lit.span).kind, Err(LitToConstError::Reported(e)) => PatKind::Error(e), Err(LitToConstError::TypeError) => bug!("lower_lit: had type error"), } diff --git a/tests/ui/consts/const_in_pattern/warn_corner_cases.rs b/tests/ui/consts/const_in_pattern/accept_corner_cases.rs similarity index 76% rename from tests/ui/consts/const_in_pattern/warn_corner_cases.rs rename to tests/ui/consts/const_in_pattern/accept_corner_cases.rs index 75f1965921c91..d5b3908f35437 100644 --- a/tests/ui/consts/const_in_pattern/warn_corner_cases.rs +++ b/tests/ui/consts/const_in_pattern/accept_corner_cases.rs @@ -2,9 +2,8 @@ // This test is checking our logic for structural match checking by enumerating // the different kinds of const expressions. This test is collecting cases where -// we have accepted the const expression as a pattern in the past but we want -// to begin warning the user that a future version of Rust may start rejecting -// such const expressions. +// we have accepted the const expression as a pattern in the past and wish to +// continue doing so. // The specific corner cases we are exploring here are instances where the // const-evaluator computes a value that *does* meet the conditions for @@ -24,18 +23,12 @@ impl Eq for NoDerive { } fn main() { const INDEX: Option = [None, Some(NoDerive(10))][0]; match None { Some(_) => panic!("whoops"), INDEX => dbg!(INDEX), }; - //~^ WARN must be annotated with `#[derive(PartialEq)]` - //~| WARN this was previously accepted const fn build() -> Option { None } const CALL: Option = build(); match None { Some(_) => panic!("whoops"), CALL => dbg!(CALL), }; - //~^ WARN must be annotated with `#[derive(PartialEq)]` - //~| WARN this was previously accepted impl NoDerive { const fn none() -> Option { None } } const METHOD_CALL: Option = NoDerive::none(); match None { Some(_) => panic!("whoops"), METHOD_CALL => dbg!(METHOD_CALL), }; - //~^ WARN must be annotated with `#[derive(PartialEq)]` - //~| WARN this was previously accepted } diff --git a/tests/ui/consts/const_in_pattern/custom-eq-branch-pass.rs b/tests/ui/consts/const_in_pattern/custom-eq-branch-pass.rs index a38731ceb8a86..ac89b7925ffec 100644 --- a/tests/ui/consts/const_in_pattern/custom-eq-branch-pass.rs +++ b/tests/ui/consts/const_in_pattern/custom-eq-branch-pass.rs @@ -12,6 +12,7 @@ impl PartialEq for CustomEq { } #[derive(PartialEq, Eq)] +#[allow(unused)] enum Foo { Bar, Baz, @@ -21,7 +22,7 @@ enum Foo { const BAR_BAZ: Foo = if 42 == 42 { Foo::Bar } else { - Foo::Baz + Foo::Qux(CustomEq) // dead arm }; fn main() { diff --git a/tests/ui/consts/const_in_pattern/custom-eq-branch-warn.rs b/tests/ui/consts/const_in_pattern/custom-eq-branch-warn.rs deleted file mode 100644 index 34b1422dfb3cb..0000000000000 --- a/tests/ui/consts/const_in_pattern/custom-eq-branch-warn.rs +++ /dev/null @@ -1,38 +0,0 @@ -// check-pass - -struct CustomEq; - -impl Eq for CustomEq {} -impl PartialEq for CustomEq { - fn eq(&self, _: &Self) -> bool { - false - } -} - -#[derive(PartialEq, Eq)] -enum Foo { - Bar, - Baz, - Qux(CustomEq), -} - -// We know that `BAR_BAZ` will always be `Foo::Bar` and thus eligible for structural matching, but -// dataflow will be more conservative. -const BAR_BAZ: Foo = if 42 == 42 { - Foo::Bar -} else { - Foo::Qux(CustomEq) -}; - -fn main() { - match Foo::Qux(CustomEq) { - BAR_BAZ => panic!(), - //~^ WARN must be annotated with `#[derive(PartialEq)]` - //~| NOTE the traits must be derived - //~| NOTE StructuralPartialEq.html for details - //~| WARN this was previously accepted - //~| NOTE see issue #73448 - //~| NOTE `#[warn(nontrivial_structural_match)]` on by default - _ => {} - } -} diff --git a/tests/ui/consts/const_in_pattern/custom-eq-branch-warn.stderr b/tests/ui/consts/const_in_pattern/custom-eq-branch-warn.stderr deleted file mode 100644 index c473c00f8dbbd..0000000000000 --- a/tests/ui/consts/const_in_pattern/custom-eq-branch-warn.stderr +++ /dev/null @@ -1,14 +0,0 @@ -warning: to use a constant of type `CustomEq` in a pattern, the constant's initializer must be trivial or `CustomEq` must be annotated with `#[derive(PartialEq)]` - --> $DIR/custom-eq-branch-warn.rs:29:9 - | -LL | BAR_BAZ => panic!(), - | ^^^^^^^ - | - = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #73448 - = note: the traits must be derived, manual `impl`s are not sufficient - = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details - = note: `#[warn(nontrivial_structural_match)]` on by default - -warning: 1 warning emitted - diff --git a/tests/ui/consts/const_in_pattern/issue-73431.stderr b/tests/ui/consts/const_in_pattern/issue-73431.stderr deleted file mode 100644 index c82dea4aa50df..0000000000000 --- a/tests/ui/consts/const_in_pattern/issue-73431.stderr +++ /dev/null @@ -1 +0,0 @@ -WARN rustc_mir_build::thir::pattern::const_to_pat MIR const-checker found novel structural match violation. See #73448. diff --git a/tests/ui/consts/const_in_pattern/warn_corner_cases.stderr b/tests/ui/consts/const_in_pattern/warn_corner_cases.stderr deleted file mode 100644 index 8ffd035ebec61..0000000000000 --- a/tests/ui/consts/const_in_pattern/warn_corner_cases.stderr +++ /dev/null @@ -1,36 +0,0 @@ -warning: to use a constant of type `NoDerive` in a pattern, the constant's initializer must be trivial or `NoDerive` must be annotated with `#[derive(PartialEq)]` - --> $DIR/warn_corner_cases.rs:26:47 - | -LL | match None { Some(_) => panic!("whoops"), INDEX => dbg!(INDEX), }; - | ^^^^^ - | - = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #73448 - = note: the traits must be derived, manual `impl`s are not sufficient - = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details - = note: `#[warn(nontrivial_structural_match)]` on by default - -warning: to use a constant of type `NoDerive` in a pattern, the constant's initializer must be trivial or `NoDerive` must be annotated with `#[derive(PartialEq)]` - --> $DIR/warn_corner_cases.rs:32:47 - | -LL | match None { Some(_) => panic!("whoops"), CALL => dbg!(CALL), }; - | ^^^^ - | - = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #73448 - = note: the traits must be derived, manual `impl`s are not sufficient - = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details - -warning: to use a constant of type `NoDerive` in a pattern, the constant's initializer must be trivial or `NoDerive` must be annotated with `#[derive(PartialEq)]` - --> $DIR/warn_corner_cases.rs:38:47 - | -LL | match None { Some(_) => panic!("whoops"), METHOD_CALL => dbg!(METHOD_CALL), }; - | ^^^^^^^^^^^ - | - = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #73448 - = note: the traits must be derived, manual `impl`s are not sufficient - = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details - -warning: 3 warnings emitted - diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.rs b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.rs index fdb67bcf2d8e4..374e5d5acd080 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.rs +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.rs @@ -10,7 +10,7 @@ // Issue 62307 pointed out a case where the structural-match checking // was too shallow. -#![warn(indirect_structural_match, nontrivial_structural_match)] +#![warn(indirect_structural_match)] // run-pass #[derive(Debug)] diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr index d0f2b820afa90..3e140a9317ef7 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr @@ -11,7 +11,7 @@ LL | RR_B1 => { println!("CLAIM RR0: {:?} matches {:?}", RR_B1, RR_B0); note: the lint level is defined here --> $DIR/issue-62307-match-ref-ref-forbidden-without-eq.rs:13:9 | -LL | #![warn(indirect_structural_match, nontrivial_structural_match)] +LL | #![warn(indirect_structural_match)] | ^^^^^^^^^^^^^^^^^^^^^^^^^ warning: to use a constant of type `B` in a pattern, `B` must be annotated with `#[derive(PartialEq)]` From 48abca761a3479d0ae5a41a338dcbe742e240d7c Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Sat, 27 Jan 2024 13:52:06 +0100 Subject: [PATCH 23/25] show indirect_structural_match and pointer_structural_match in future compat reports --- compiler/rustc_lint_defs/src/builtin.rs | 4 +- .../match/match-edge-cases_1.stderr | 11 ++ ...ssue-34784-match-on-non-int-raw-ptr.stderr | 60 ++++++++++ .../const_in_pattern/issue-44333.stderr | 30 +++++ .../reject_non_structural.stderr | 17 +++ .../const-partial_eq-fallback-ice.stderr | 18 +++ .../pattern/usefulness/consts-opaque.stderr | 88 ++++++++++++++ ...ide-behind-doubly-indirect-embedded.stderr | 17 +++ ...t-hide-behind-doubly-indirect-param.stderr | 17 +++ ...ide-behind-indirect-struct-embedded.stderr | 17 +++ ...t-hide-behind-indirect-struct-param.stderr | 17 +++ .../fn-ptr-is-structurally-matchable.stderr | 110 ++++++++++++++++++ ...-match-ref-ref-forbidden-without-eq.stderr | 34 ++++++ .../issue-63479-match-fnptr.stderr | 30 +++++ 14 files changed, 468 insertions(+), 2 deletions(-) diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs index e4298a2636f9f..5bd25b4a54b57 100644 --- a/compiler/rustc_lint_defs/src/builtin.rs +++ b/compiler/rustc_lint_defs/src/builtin.rs @@ -2282,7 +2282,7 @@ declare_lint! { Warn, "constant used in pattern contains value of non-structural-match type in a field or a variant", @future_incompatible = FutureIncompatibleInfo { - reason: FutureIncompatibilityReason::FutureReleaseErrorDontReportInDeps, + reason: FutureIncompatibilityReason::FutureReleaseErrorReportInDeps, reference: "issue #62411 ", }; } @@ -2338,7 +2338,7 @@ declare_lint! { Warn, "pointers are not structural-match", @future_incompatible = FutureIncompatibleInfo { - reason: FutureIncompatibilityReason::FutureReleaseErrorDontReportInDeps, + reason: FutureIncompatibilityReason::FutureReleaseErrorReportInDeps, reference: "issue #62411 ", }; } diff --git a/tests/ui/closures/2229_closure_analysis/match/match-edge-cases_1.stderr b/tests/ui/closures/2229_closure_analysis/match/match-edge-cases_1.stderr index c83ba41976bcd..7aa83de84ee71 100644 --- a/tests/ui/closures/2229_closure_analysis/match/match-edge-cases_1.stderr +++ b/tests/ui/closures/2229_closure_analysis/match/match-edge-cases_1.stderr @@ -10,3 +10,14 @@ LL | NUMBER_POINTER => (), warning: 1 warning emitted +Future incompatibility report: Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/match-edge-cases_1.rs:29:13 + | +LL | NUMBER_POINTER => (), + | ^^^^^^^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + diff --git a/tests/ui/consts/const_in_pattern/issue-34784-match-on-non-int-raw-ptr.stderr b/tests/ui/consts/const_in_pattern/issue-34784-match-on-non-int-raw-ptr.stderr index 1546f23908c6f..416343a14dd27 100644 --- a/tests/ui/consts/const_in_pattern/issue-34784-match-on-non-int-raw-ptr.stderr +++ b/tests/ui/consts/const_in_pattern/issue-34784-match-on-non-int-raw-ptr.stderr @@ -41,3 +41,63 @@ LL | STR => {} error: aborting due to 4 previous errors +Future incompatibility report: Future breakage diagnostic: +error: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:10:9 + | +LL | C => {} + | ^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 +note: the lint level is defined here + --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:1:9 + | +LL | #![deny(pointer_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +Future breakage diagnostic: +error: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:18:9 + | +LL | C_INNER => {} + | ^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 +note: the lint level is defined here + --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:1:9 + | +LL | #![deny(pointer_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +Future breakage diagnostic: +error: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:30:9 + | +LL | D => {} + | ^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 +note: the lint level is defined here + --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:1:9 + | +LL | #![deny(pointer_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +Future breakage diagnostic: +error: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:36:9 + | +LL | STR => {} + | ^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 +note: the lint level is defined here + --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:1:9 + | +LL | #![deny(pointer_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + diff --git a/tests/ui/consts/const_in_pattern/issue-44333.stderr b/tests/ui/consts/const_in_pattern/issue-44333.stderr index 441aeecbc6d95..8b62e2a505746 100644 --- a/tests/ui/consts/const_in_pattern/issue-44333.stderr +++ b/tests/ui/consts/const_in_pattern/issue-44333.stderr @@ -23,3 +23,33 @@ LL | BAR => println!("bar"), warning: 2 warnings emitted +Future incompatibility report: Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/issue-44333.rs:19:9 + | +LL | FOO => println!("foo"), + | ^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 +note: the lint level is defined here + --> $DIR/issue-44333.rs:3:9 + | +LL | #![warn(pointer_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/issue-44333.rs:21:9 + | +LL | BAR => println!("bar"), + | ^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 +note: the lint level is defined here + --> $DIR/issue-44333.rs:3:9 + | +LL | #![warn(pointer_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + diff --git a/tests/ui/consts/const_in_pattern/reject_non_structural.stderr b/tests/ui/consts/const_in_pattern/reject_non_structural.stderr index da32b6d698bb5..31202e26044af 100644 --- a/tests/ui/consts/const_in_pattern/reject_non_structural.stderr +++ b/tests/ui/consts/const_in_pattern/reject_non_structural.stderr @@ -97,3 +97,20 @@ LL | #![warn(indirect_structural_match)] error: aborting due to 9 previous errors; 1 warning emitted +Future incompatibility report: Future breakage diagnostic: +warning: to use a constant of type `NoDerive` in a pattern, `NoDerive` must be annotated with `#[derive(PartialEq)]` + --> $DIR/reject_non_structural.rs:98:29 + | +LL | match &Some(NoDerive) { ADDR_OF => dbg!(ADDR_OF), _ => panic!("whoops"), }; + | ^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: the traits must be derived, manual `impl`s are not sufficient + = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details +note: the lint level is defined here + --> $DIR/reject_non_structural.rs:14:9 + | +LL | #![warn(indirect_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + diff --git a/tests/ui/pattern/usefulness/const-partial_eq-fallback-ice.stderr b/tests/ui/pattern/usefulness/const-partial_eq-fallback-ice.stderr index 0b4d99727581b..2c38dc516bf84 100644 --- a/tests/ui/pattern/usefulness/const-partial_eq-fallback-ice.stderr +++ b/tests/ui/pattern/usefulness/const-partial_eq-fallback-ice.stderr @@ -9,3 +9,21 @@ LL | if let CONSTANT = &&MyType { error: aborting due to 1 previous error +Future incompatibility report: Future breakage diagnostic: +warning: to use a constant of type `MyType` in a pattern, `MyType` must be annotated with `#[derive(PartialEq)]` + --> $DIR/const-partial_eq-fallback-ice.rs:14:12 + | +LL | if let CONSTANT = &&MyType { + | ^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: the traits must be derived, manual `impl`s are not sufficient + = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details +note: the lint level is defined here + --> $DIR/const-partial_eq-fallback-ice.rs:1:10 + | +LL | #![allow(warnings)] + | ^^^^^^^^ + = note: `#[allow(indirect_structural_match)]` implied by `#[allow(warnings)]` + diff --git a/tests/ui/pattern/usefulness/consts-opaque.stderr b/tests/ui/pattern/usefulness/consts-opaque.stderr index 0b1a2e2736e1d..ca87f4a2aeec8 100644 --- a/tests/ui/pattern/usefulness/consts-opaque.stderr +++ b/tests/ui/pattern/usefulness/consts-opaque.stderr @@ -166,3 +166,91 @@ LL | WRAPQUUX => {}, Wrap(_) => todo!() error: aborting due to 10 previous errors; 8 warnings emitted For more information about this error, try `rustc --explain E0004`. +Future incompatibility report: Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/consts-opaque.rs:96:9 + | +LL | QUUX => {} + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/consts-opaque.rs:98:9 + | +LL | QUUX => {} + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/consts-opaque.rs:108:9 + | +LL | WRAPQUUX => {} + | ^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/consts-opaque.rs:110:9 + | +LL | WRAPQUUX => {} + | ^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/consts-opaque.rs:117:9 + | +LL | WRAPQUUX => {} + | ^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/consts-opaque.rs:127:9 + | +LL | WRAPQUUX => {} + | ^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/consts-opaque.rs:139:9 + | +LL | WHOKNOWSQUUX => {} + | ^^^^^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/consts-opaque.rs:142:9 + | +LL | WHOKNOWSQUUX => {} + | ^^^^^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-embedded.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-embedded.stderr index 910d491baaf43..fc8dd75af6881 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-embedded.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-embedded.stderr @@ -16,3 +16,20 @@ LL | #![warn(indirect_structural_match)] warning: 1 warning emitted +Future incompatibility report: Future breakage diagnostic: +warning: to use a constant of type `NoDerive` in a pattern, `NoDerive` must be annotated with `#[derive(PartialEq)]` + --> $DIR/cant-hide-behind-doubly-indirect-embedded.rs:24:9 + | +LL | WRAP_DOUBLY_INDIRECT_INLINE => { panic!("WRAP_DOUBLY_INDIRECT_INLINE matched itself"); } + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: the traits must be derived, manual `impl`s are not sufficient + = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details +note: the lint level is defined here + --> $DIR/cant-hide-behind-doubly-indirect-embedded.rs:7:9 + | +LL | #![warn(indirect_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-param.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-param.stderr index cadd9be023c50..7c4c72bf888c6 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-param.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-param.stderr @@ -16,3 +16,20 @@ LL | #![warn(indirect_structural_match)] warning: 1 warning emitted +Future incompatibility report: Future breakage diagnostic: +warning: to use a constant of type `NoDerive` in a pattern, `NoDerive` must be annotated with `#[derive(PartialEq)]` + --> $DIR/cant-hide-behind-doubly-indirect-param.rs:24:9 + | +LL | WRAP_DOUBLY_INDIRECT_PARAM => { panic!("WRAP_DOUBLY_INDIRECT_PARAM matched itself"); } + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: the traits must be derived, manual `impl`s are not sufficient + = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details +note: the lint level is defined here + --> $DIR/cant-hide-behind-doubly-indirect-param.rs:7:9 + | +LL | #![warn(indirect_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-embedded.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-embedded.stderr index e4321cc6a4c71..e0c75c94da307 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-embedded.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-embedded.stderr @@ -16,3 +16,20 @@ LL | #![warn(indirect_structural_match)] warning: 1 warning emitted +Future incompatibility report: Future breakage diagnostic: +warning: to use a constant of type `NoDerive` in a pattern, `NoDerive` must be annotated with `#[derive(PartialEq)]` + --> $DIR/cant-hide-behind-indirect-struct-embedded.rs:24:9 + | +LL | WRAP_INDIRECT_INLINE => { panic!("WRAP_INDIRECT_INLINE matched itself"); } + | ^^^^^^^^^^^^^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: the traits must be derived, manual `impl`s are not sufficient + = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details +note: the lint level is defined here + --> $DIR/cant-hide-behind-indirect-struct-embedded.rs:7:9 + | +LL | #![warn(indirect_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-param.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-param.stderr index decc29ad67cd2..0f815daf8a2eb 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-param.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-param.stderr @@ -16,3 +16,20 @@ LL | #![warn(indirect_structural_match)] warning: 1 warning emitted +Future incompatibility report: Future breakage diagnostic: +warning: to use a constant of type `NoDerive` in a pattern, `NoDerive` must be annotated with `#[derive(PartialEq)]` + --> $DIR/cant-hide-behind-indirect-struct-param.rs:24:9 + | +LL | WRAP_INDIRECT_PARAM => { panic!("WRAP_INDIRECT_PARAM matched itself"); } + | ^^^^^^^^^^^^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: the traits must be derived, manual `impl`s are not sufficient + = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details +note: the lint level is defined here + --> $DIR/cant-hide-behind-indirect-struct-param.rs:7:9 + | +LL | #![warn(indirect_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/fn-ptr-is-structurally-matchable.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/fn-ptr-is-structurally-matchable.stderr index 080bf5885ba75..cebe4a26d31ea 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/fn-ptr-is-structurally-matchable.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/fn-ptr-is-structurally-matchable.stderr @@ -91,3 +91,113 @@ LL | CFOO => count += 1, warning: 10 warnings emitted +Future incompatibility report: Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:43:14 + | +LL | Wrap(CFN1) => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:52:14 + | +LL | Wrap(CFN2) => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:61:14 + | +LL | Wrap(CFN3) => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:70:14 + | +LL | Wrap(CFN4) => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:79:14 + | +LL | Wrap(CFN5) => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:88:14 + | +LL | Wrap(CFN6) => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:97:14 + | +LL | Wrap(CFN7) => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:106:14 + | +LL | Wrap(CFN8) => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:115:14 + | +LL | Wrap(CFN9) => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/fn-ptr-is-structurally-matchable.rs:138:9 + | +LL | CFOO => count += 1, + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: `#[warn(pointer_structural_match)]` on by default + diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr index 3e140a9317ef7..1665a9c8078ad 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr @@ -27,3 +27,37 @@ LL | RR_B1 => { println!("CLAIM RR1: {:?} matches {:?}", RR_B1, RR_B1); warning: 2 warnings emitted +Future incompatibility report: Future breakage diagnostic: +warning: to use a constant of type `B` in a pattern, `B` must be annotated with `#[derive(PartialEq)]` + --> $DIR/issue-62307-match-ref-ref-forbidden-without-eq.rs:31:9 + | +LL | RR_B1 => { println!("CLAIM RR0: {:?} matches {:?}", RR_B1, RR_B0); } + | ^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: the traits must be derived, manual `impl`s are not sufficient + = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details +note: the lint level is defined here + --> $DIR/issue-62307-match-ref-ref-forbidden-without-eq.rs:13:9 + | +LL | #![warn(indirect_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + +Future breakage diagnostic: +warning: to use a constant of type `B` in a pattern, `B` must be annotated with `#[derive(PartialEq)]` + --> $DIR/issue-62307-match-ref-ref-forbidden-without-eq.rs:38:9 + | +LL | RR_B1 => { println!("CLAIM RR1: {:?} matches {:?}", RR_B1, RR_B1); } + | ^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 + = note: the traits must be derived, manual `impl`s are not sufficient + = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details +note: the lint level is defined here + --> $DIR/issue-62307-match-ref-ref-forbidden-without-eq.rs:13:9 + | +LL | #![warn(indirect_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-63479-match-fnptr.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-63479-match-fnptr.stderr index 4fdfce60bb861..fa672f7ef22e6 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-63479-match-fnptr.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-63479-match-fnptr.stderr @@ -23,3 +23,33 @@ LL | TEST2 => println!("matched"), warning: 2 warnings emitted +Future incompatibility report: Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/issue-63479-match-fnptr.rs:36:7 + | +LL | B(TEST) => println!("matched"), + | ^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 +note: the lint level is defined here + --> $DIR/issue-63479-match-fnptr.rs:8:9 + | +LL | #![warn(pointer_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +Future breakage diagnostic: +warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. + --> $DIR/issue-63479-match-fnptr.rs:42:5 + | +LL | TEST2 => println!("matched"), + | ^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #62411 +note: the lint level is defined here + --> $DIR/issue-63479-match-fnptr.rs:8:9 + | +LL | #![warn(pointer_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + From 45d01b81311b0888530cd9a394b62d6af04bd972 Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Sat, 27 Jan 2024 14:22:56 +0100 Subject: [PATCH 24/25] update the tracking issue for structural match violations and bless a test I missed --- compiler/rustc_lint_defs/src/builtin.rs | 4 +- .../match/match-edge-cases_1.stderr | 4 +- ...ssue-34784-match-on-non-int-raw-ptr.stderr | 16 ++++---- .../const_in_pattern/issue-44333.stderr | 8 ++-- .../const_in_pattern/reject_non_structural.rs | 2 +- .../reject_non_structural.stderr | 4 +- tests/ui/consts/issue-89088.stderr | 17 ++++++++ .../const-partial_eq-fallback-ice.stderr | 2 +- .../pattern/usefulness/consts-opaque.stderr | 32 +++++++-------- ...ide-behind-doubly-indirect-embedded.stderr | 4 +- ...t-hide-behind-doubly-indirect-param.stderr | 4 +- ...ide-behind-indirect-struct-embedded.stderr | 4 +- ...t-hide-behind-indirect-struct-param.stderr | 4 +- .../fn-ptr-is-structurally-matchable.stderr | 40 +++++++++---------- ...-match-ref-ref-forbidden-without-eq.stderr | 8 ++-- .../issue-63479-match-fnptr.stderr | 8 ++-- 16 files changed, 89 insertions(+), 72 deletions(-) create mode 100644 tests/ui/consts/issue-89088.stderr diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs index 5bd25b4a54b57..6a2a2c1e48e2a 100644 --- a/compiler/rustc_lint_defs/src/builtin.rs +++ b/compiler/rustc_lint_defs/src/builtin.rs @@ -2283,7 +2283,7 @@ declare_lint! { "constant used in pattern contains value of non-structural-match type in a field or a variant", @future_incompatible = FutureIncompatibleInfo { reason: FutureIncompatibilityReason::FutureReleaseErrorReportInDeps, - reference: "issue #62411 ", + reference: "issue #120362 ", }; } @@ -2339,7 +2339,7 @@ declare_lint! { "pointers are not structural-match", @future_incompatible = FutureIncompatibleInfo { reason: FutureIncompatibilityReason::FutureReleaseErrorReportInDeps, - reference: "issue #62411 ", + reference: "issue #120362 ", }; } diff --git a/tests/ui/closures/2229_closure_analysis/match/match-edge-cases_1.stderr b/tests/ui/closures/2229_closure_analysis/match/match-edge-cases_1.stderr index 7aa83de84ee71..8a2aaade66503 100644 --- a/tests/ui/closures/2229_closure_analysis/match/match-edge-cases_1.stderr +++ b/tests/ui/closures/2229_closure_analysis/match/match-edge-cases_1.stderr @@ -5,7 +5,7 @@ LL | NUMBER_POINTER => (), | ^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default warning: 1 warning emitted @@ -18,6 +18,6 @@ LL | NUMBER_POINTER => (), | ^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default diff --git a/tests/ui/consts/const_in_pattern/issue-34784-match-on-non-int-raw-ptr.stderr b/tests/ui/consts/const_in_pattern/issue-34784-match-on-non-int-raw-ptr.stderr index 416343a14dd27..bc1015c173426 100644 --- a/tests/ui/consts/const_in_pattern/issue-34784-match-on-non-int-raw-ptr.stderr +++ b/tests/ui/consts/const_in_pattern/issue-34784-match-on-non-int-raw-ptr.stderr @@ -5,7 +5,7 @@ LL | C => {} | ^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:1:9 | @@ -19,7 +19,7 @@ LL | C_INNER => {} | ^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 error: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:30:9 @@ -28,7 +28,7 @@ LL | D => {} | ^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 error: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:36:9 @@ -37,7 +37,7 @@ LL | STR => {} | ^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 error: aborting due to 4 previous errors @@ -49,7 +49,7 @@ LL | C => {} | ^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:1:9 | @@ -64,7 +64,7 @@ LL | C_INNER => {} | ^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:1:9 | @@ -79,7 +79,7 @@ LL | D => {} | ^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:1:9 | @@ -94,7 +94,7 @@ LL | STR => {} | ^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-34784-match-on-non-int-raw-ptr.rs:1:9 | diff --git a/tests/ui/consts/const_in_pattern/issue-44333.stderr b/tests/ui/consts/const_in_pattern/issue-44333.stderr index 8b62e2a505746..f5931f0cad08b 100644 --- a/tests/ui/consts/const_in_pattern/issue-44333.stderr +++ b/tests/ui/consts/const_in_pattern/issue-44333.stderr @@ -5,7 +5,7 @@ LL | FOO => println!("foo"), | ^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-44333.rs:3:9 | @@ -19,7 +19,7 @@ LL | BAR => println!("bar"), | ^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: 2 warnings emitted @@ -31,7 +31,7 @@ LL | FOO => println!("foo"), | ^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-44333.rs:3:9 | @@ -46,7 +46,7 @@ LL | BAR => println!("bar"), | ^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-44333.rs:3:9 | diff --git a/tests/ui/consts/const_in_pattern/reject_non_structural.rs b/tests/ui/consts/const_in_pattern/reject_non_structural.rs index 196930baed5de..71d4138104db1 100644 --- a/tests/ui/consts/const_in_pattern/reject_non_structural.rs +++ b/tests/ui/consts/const_in_pattern/reject_non_structural.rs @@ -100,5 +100,5 @@ fn main() { //~| NOTE the traits must be derived //~| NOTE StructuralPartialEq.html for details //~| WARN previously accepted by the compiler but is being phased out - //~| NOTE for more information, see issue #62411 + //~| NOTE for more information, see } diff --git a/tests/ui/consts/const_in_pattern/reject_non_structural.stderr b/tests/ui/consts/const_in_pattern/reject_non_structural.stderr index 31202e26044af..2c7aaf89aa787 100644 --- a/tests/ui/consts/const_in_pattern/reject_non_structural.stderr +++ b/tests/ui/consts/const_in_pattern/reject_non_structural.stderr @@ -86,7 +86,7 @@ LL | match &Some(NoDerive) { ADDR_OF => dbg!(ADDR_OF), _ => panic!("whoops") | ^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here @@ -105,7 +105,7 @@ LL | match &Some(NoDerive) { ADDR_OF => dbg!(ADDR_OF), _ => panic!("whoops") | ^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here diff --git a/tests/ui/consts/issue-89088.stderr b/tests/ui/consts/issue-89088.stderr new file mode 100644 index 0000000000000..d5c5f76b90a01 --- /dev/null +++ b/tests/ui/consts/issue-89088.stderr @@ -0,0 +1,17 @@ +Future incompatibility report: Future breakage diagnostic: +warning: to use a constant of type `Cow<'_, str>` in a pattern, `Cow<'_, str>` must be annotated with `#[derive(PartialEq)]` + --> $DIR/issue-89088.rs:19:9 + | +LL | FOO => todo!(), + | ^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #120362 + = note: the traits must be derived, manual `impl`s are not sufficient + = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details +note: the lint level is defined here + --> $DIR/issue-89088.rs:5:10 + | +LL | #![allow(indirect_structural_match)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + diff --git a/tests/ui/pattern/usefulness/const-partial_eq-fallback-ice.stderr b/tests/ui/pattern/usefulness/const-partial_eq-fallback-ice.stderr index 2c38dc516bf84..59b454d398195 100644 --- a/tests/ui/pattern/usefulness/const-partial_eq-fallback-ice.stderr +++ b/tests/ui/pattern/usefulness/const-partial_eq-fallback-ice.stderr @@ -17,7 +17,7 @@ LL | if let CONSTANT = &&MyType { | ^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here diff --git a/tests/ui/pattern/usefulness/consts-opaque.stderr b/tests/ui/pattern/usefulness/consts-opaque.stderr index ca87f4a2aeec8..6a5bd185e39b3 100644 --- a/tests/ui/pattern/usefulness/consts-opaque.stderr +++ b/tests/ui/pattern/usefulness/consts-opaque.stderr @@ -5,7 +5,7 @@ LL | QUUX => {} | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. @@ -15,7 +15,7 @@ LL | QUUX => {} | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/consts-opaque.rs:108:9 @@ -24,7 +24,7 @@ LL | WRAPQUUX => {} | ^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/consts-opaque.rs:110:9 @@ -33,7 +33,7 @@ LL | WRAPQUUX => {} | ^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/consts-opaque.rs:117:9 @@ -42,7 +42,7 @@ LL | WRAPQUUX => {} | ^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/consts-opaque.rs:127:9 @@ -51,7 +51,7 @@ LL | WRAPQUUX => {} | ^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/consts-opaque.rs:139:9 @@ -60,7 +60,7 @@ LL | WHOKNOWSQUUX => {} | ^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/consts-opaque.rs:142:9 @@ -69,7 +69,7 @@ LL | WHOKNOWSQUUX => {} | ^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 error: unreachable pattern --> $DIR/consts-opaque.rs:48:9 @@ -174,7 +174,7 @@ LL | QUUX => {} | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -185,7 +185,7 @@ LL | QUUX => {} | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -196,7 +196,7 @@ LL | WRAPQUUX => {} | ^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -207,7 +207,7 @@ LL | WRAPQUUX => {} | ^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -218,7 +218,7 @@ LL | WRAPQUUX => {} | ^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -229,7 +229,7 @@ LL | WRAPQUUX => {} | ^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -240,7 +240,7 @@ LL | WHOKNOWSQUUX => {} | ^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -251,6 +251,6 @@ LL | WHOKNOWSQUUX => {} | ^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-embedded.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-embedded.stderr index fc8dd75af6881..9945041113d79 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-embedded.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-embedded.stderr @@ -5,7 +5,7 @@ LL | WRAP_DOUBLY_INDIRECT_INLINE => { panic!("WRAP_DOUBLY_INDIRECT_INLIN | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here @@ -24,7 +24,7 @@ LL | WRAP_DOUBLY_INDIRECT_INLINE => { panic!("WRAP_DOUBLY_INDIRECT_INLIN | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-param.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-param.stderr index 7c4c72bf888c6..6ac261ae81437 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-param.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-doubly-indirect-param.stderr @@ -5,7 +5,7 @@ LL | WRAP_DOUBLY_INDIRECT_PARAM => { panic!("WRAP_DOUBLY_INDIRECT_PARAM | ^^^^^^^^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here @@ -24,7 +24,7 @@ LL | WRAP_DOUBLY_INDIRECT_PARAM => { panic!("WRAP_DOUBLY_INDIRECT_PARAM | ^^^^^^^^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-embedded.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-embedded.stderr index e0c75c94da307..41616fb90fe96 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-embedded.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-embedded.stderr @@ -5,7 +5,7 @@ LL | WRAP_INDIRECT_INLINE => { panic!("WRAP_INDIRECT_INLINE matched itse | ^^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here @@ -24,7 +24,7 @@ LL | WRAP_INDIRECT_INLINE => { panic!("WRAP_INDIRECT_INLINE matched itse | ^^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-param.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-param.stderr index 0f815daf8a2eb..99dea5171d1bc 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-param.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-indirect-struct-param.stderr @@ -5,7 +5,7 @@ LL | WRAP_INDIRECT_PARAM => { panic!("WRAP_INDIRECT_PARAM matched itself | ^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here @@ -24,7 +24,7 @@ LL | WRAP_INDIRECT_PARAM => { panic!("WRAP_INDIRECT_PARAM matched itself | ^^^^^^^^^^^^^^^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/fn-ptr-is-structurally-matchable.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/fn-ptr-is-structurally-matchable.stderr index cebe4a26d31ea..11163ba70ec65 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/fn-ptr-is-structurally-matchable.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/fn-ptr-is-structurally-matchable.stderr @@ -5,7 +5,7 @@ LL | Wrap(CFN1) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. @@ -15,7 +15,7 @@ LL | Wrap(CFN2) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/fn-ptr-is-structurally-matchable.rs:61:14 @@ -24,7 +24,7 @@ LL | Wrap(CFN3) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/fn-ptr-is-structurally-matchable.rs:70:14 @@ -33,7 +33,7 @@ LL | Wrap(CFN4) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/fn-ptr-is-structurally-matchable.rs:79:14 @@ -42,7 +42,7 @@ LL | Wrap(CFN5) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/fn-ptr-is-structurally-matchable.rs:88:14 @@ -51,7 +51,7 @@ LL | Wrap(CFN6) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/fn-ptr-is-structurally-matchable.rs:97:14 @@ -60,7 +60,7 @@ LL | Wrap(CFN7) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/fn-ptr-is-structurally-matchable.rs:106:14 @@ -69,7 +69,7 @@ LL | Wrap(CFN8) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/fn-ptr-is-structurally-matchable.rs:115:14 @@ -78,7 +78,7 @@ LL | Wrap(CFN9) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: function pointers and raw pointers not derived from integers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details. --> $DIR/fn-ptr-is-structurally-matchable.rs:138:9 @@ -87,7 +87,7 @@ LL | CFOO => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: 10 warnings emitted @@ -99,7 +99,7 @@ LL | Wrap(CFN1) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -110,7 +110,7 @@ LL | Wrap(CFN2) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -121,7 +121,7 @@ LL | Wrap(CFN3) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -132,7 +132,7 @@ LL | Wrap(CFN4) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -143,7 +143,7 @@ LL | Wrap(CFN5) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -154,7 +154,7 @@ LL | Wrap(CFN6) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -165,7 +165,7 @@ LL | Wrap(CFN7) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -176,7 +176,7 @@ LL | Wrap(CFN8) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -187,7 +187,7 @@ LL | Wrap(CFN9) => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default Future breakage diagnostic: @@ -198,6 +198,6 @@ LL | CFOO => count += 1, | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: `#[warn(pointer_structural_match)]` on by default diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr index 1665a9c8078ad..d4ab1ce3ba2ad 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr @@ -5,7 +5,7 @@ LL | RR_B1 => { println!("CLAIM RR0: {:?} matches {:?}", RR_B1, RR_B0); | ^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here @@ -21,7 +21,7 @@ LL | RR_B1 => { println!("CLAIM RR1: {:?} matches {:?}", RR_B1, RR_B1); | ^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details @@ -35,7 +35,7 @@ LL | RR_B1 => { println!("CLAIM RR0: {:?} matches {:?}", RR_B1, RR_B0); | ^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here @@ -52,7 +52,7 @@ LL | RR_B1 => { println!("CLAIM RR1: {:?} matches {:?}", RR_B1, RR_B1); | ^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 = note: the traits must be derived, manual `impl`s are not sufficient = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details note: the lint level is defined here diff --git a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-63479-match-fnptr.stderr b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-63479-match-fnptr.stderr index fa672f7ef22e6..0edcf44c4d795 100644 --- a/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-63479-match-fnptr.stderr +++ b/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-63479-match-fnptr.stderr @@ -5,7 +5,7 @@ LL | B(TEST) => println!("matched"), | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-63479-match-fnptr.rs:8:9 | @@ -19,7 +19,7 @@ LL | TEST2 => println!("matched"), | ^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 warning: 2 warnings emitted @@ -31,7 +31,7 @@ LL | B(TEST) => println!("matched"), | ^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-63479-match-fnptr.rs:8:9 | @@ -46,7 +46,7 @@ LL | TEST2 => println!("matched"), | ^^^^^ | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - = note: for more information, see issue #62411 + = note: for more information, see issue #120362 note: the lint level is defined here --> $DIR/issue-63479-match-fnptr.rs:8:9 | From e00df17abd6eabfead30dce439592b1902fd0acd Mon Sep 17 00:00:00 2001 From: Ralf Jung Date: Sun, 28 Jan 2024 10:03:02 +0100 Subject: [PATCH 25/25] merge the accepted-structural-match tests into one --- .../const_in_pattern/accept_corner_cases.rs | 34 ------------------- .../const_in_pattern/accept_structural.rs | 14 ++++++++ 2 files changed, 14 insertions(+), 34 deletions(-) delete mode 100644 tests/ui/consts/const_in_pattern/accept_corner_cases.rs diff --git a/tests/ui/consts/const_in_pattern/accept_corner_cases.rs b/tests/ui/consts/const_in_pattern/accept_corner_cases.rs deleted file mode 100644 index d5b3908f35437..0000000000000 --- a/tests/ui/consts/const_in_pattern/accept_corner_cases.rs +++ /dev/null @@ -1,34 +0,0 @@ -// run-pass - -// This test is checking our logic for structural match checking by enumerating -// the different kinds of const expressions. This test is collecting cases where -// we have accepted the const expression as a pattern in the past and wish to -// continue doing so. - -// The specific corner cases we are exploring here are instances where the -// const-evaluator computes a value that *does* meet the conditions for -// structural-match, but the const expression itself has abstractions (like -// calls to const functions) that may fit better with a type-based analysis -// rather than a commitment to a specific value. - -#![warn(indirect_structural_match)] - -#[derive(Copy, Clone, Debug)] -struct NoDerive(#[allow(dead_code)] u32); - -// This impl makes `NoDerive` irreflexive. -impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } } -impl Eq for NoDerive { } - -fn main() { - const INDEX: Option = [None, Some(NoDerive(10))][0]; - match None { Some(_) => panic!("whoops"), INDEX => dbg!(INDEX), }; - - const fn build() -> Option { None } - const CALL: Option = build(); - match None { Some(_) => panic!("whoops"), CALL => dbg!(CALL), }; - - impl NoDerive { const fn none() -> Option { None } } - const METHOD_CALL: Option = NoDerive::none(); - match None { Some(_) => panic!("whoops"), METHOD_CALL => dbg!(METHOD_CALL), }; -} diff --git a/tests/ui/consts/const_in_pattern/accept_structural.rs b/tests/ui/consts/const_in_pattern/accept_structural.rs index 1f56f581c0270..69b4e75c62236 100644 --- a/tests/ui/consts/const_in_pattern/accept_structural.rs +++ b/tests/ui/consts/const_in_pattern/accept_structural.rs @@ -63,4 +63,18 @@ fn main() { const ADDR_OF: &OND = &None; match &None { ADDR_OF => dbg!(ADDR_OF), _ => panic!("whoops"), }; + + // These ones are more subtle: the final value is fine, but statically analyzing the expression + // that computes the value would likely (incorrectly) have us conclude that this may match on + // values that do not have structural equality. + const INDEX: Option = [None, Some(NoDerive(10))][0]; + match None { Some(_) => panic!("whoops"), INDEX => dbg!(INDEX), }; + + const fn build() -> Option { None } + const CALL: Option = build(); + match None { Some(_) => panic!("whoops"), CALL => dbg!(CALL), }; + + impl NoDerive { const fn none() -> Option { None } } + const METHOD_CALL: Option = NoDerive::none(); + match None { Some(_) => panic!("whoops"), METHOD_CALL => dbg!(METHOD_CALL), }; }