Rustup to rust-lang/rust#84373, rust-lang/rust#87867, and rust-lang/r…

…ust#88677

README.md

@@ -27,13 +27,13 @@ repository and compiled from source or installed from
 of the nightly toolchain is supported at any given time.
 
 <!-- NOTE: Keep in sync with nightly date on rust-toolchain. -->
-It's recommended to use `nightly-2021-09-10` toolchain.
-You can install it by using `rustup install nightly-2021-09-10` if you already have rustup.
+It's recommended to use `nightly-2021-09-20` toolchain.
+You can install it by using `rustup install nightly-2021-09-20` if you already have rustup.
 Then you can do:
 
 ```sh
-$ rustup component add rustc-dev llvm-tools-preview --toolchain nightly-2021-09-10
-$ cargo +nightly-2021-09-10 install --git https://github.com/rust-lang/rust-semverver
+$ rustup component add rustc-dev llvm-tools-preview --toolchain nightly-2021-09-20
+$ cargo +nightly-2021-09-20 install --git https://github.com/rust-lang/rust-semverver
 ```
 
 You'd also need `cmake` for some dependencies, and a few common libraries (if you hit

rust-toolchain

@@ -1,4 +1,4 @@
 # NOTE: Keep in sync with nightly date on README
 [toolchain]
-channel = "nightly-2021-09-10"
+channel = "nightly-2021-09-20"
 components = ["llvm-tools-preview", "rustc-dev"]

src/changes.rs

@@ -1230,7 +1230,7 @@ pub mod tests {
     use std::cmp::{max, min};
 
     use rustc_span::hygiene::SyntaxContext;
-    use rustc_span::symbol::Interner;
+    use rustc_span::symbol::sym;
     use rustc_span::BytePos;
 
     /// A wrapper for `Span` that can be randomly generated.
@@ -1239,7 +1239,12 @@ pub mod tests {
 
     impl Span_ {
         pub fn inner(self) -> Span {
-            Span::new(BytePos(self.0), BytePos(self.1), SyntaxContext::root())
+            Span::new(
+                BytePos(self.0),
+                BytePos(self.1),
+                SyntaxContext::root(),
+                None,
+            )
         }
     }
 
@@ -1460,8 +1465,7 @@ pub mod tests {
         output: bool,
         changes: Vec<(ChangeType_, Option<Span_>)>,
     ) -> Change<'a> {
-        let mut interner = Interner::default();
-        let mut change = Change::new(Name::Symbol(RSymbol(interner.intern("test"))), s1, output);
+        let mut change = Change::new(Name::Symbol(RSymbol(sym::test)), s1, output);
 
         for (type_, span) in changes {
             change.insert(type_.inner(), span.map(|s| s.inner()));
@@ -1475,8 +1479,7 @@ pub mod tests {
 
     /// Construct `PathChange`s from things that can be generated.
     fn build_path_change(s1: Span, spans: Vec<(bool, Span)>) -> PathChange {
-        let mut interner = Interner::default();
-        let mut change = PathChange::new(interner.intern("test"), s1);
+        let mut change = PathChange::new(sym::test, s1);
 
         for (add, span) in spans {
             change.insert(span, add);
@@ -1546,8 +1549,7 @@ pub mod tests {
             rustc_span::create_default_session_globals_then(|| {
             let mut set = ChangeSet::default();
 
-            let mut interner = Interner::default();
-            let name = interner.intern("test");
+            let name = sym::test;
 
             let max = changes
                 .iter()
@@ -1579,8 +1581,7 @@ pub mod tests {
             rustc_span::create_default_session_globals_then(|| {
             let mut set = ChangeSet::default();
 
-            let mut interner = Interner::default();
-            let name = interner.intern("test");
+            let name = sym::test;
 
             let max = changes
                 .iter()
@@ -1614,8 +1615,7 @@ pub mod tests {
             rustc_span::create_default_session_globals_then(|| {
             let mut set = ChangeSet::default();
 
-            let mut interner = Interner::default();
-            let name = interner.intern("test");
+            let name = sym::test;
 
             let max = pchanges
                 .iter()

src/mapping.rs

@@ -325,7 +325,7 @@ impl IdMapping {
 }
 
 /// An export that could be missing from one of the crate versions.
-type OptionalExport = Option<Export<HirId>>;
+type OptionalExport = Option<Export>;
 
 /// A mapping from names to pairs of old and new exports.
 ///
@@ -343,11 +343,11 @@ pub struct NameMapping {
 
 impl NameMapping {
     /// Insert a single export in the appropriate map, at the appropriate position.
-    fn insert(&mut self, item: Export<HirId>, old: bool) {
+    fn insert(&mut self, item: Export, old: bool) {
         use rustc_hir::def::DefKind::*;
         use rustc_hir::def::Res::*;
 
-        let map = match item.res {
+        let map = match item.res.expect_non_local::<HirId>() {
             Def(kind, _) => match kind {
                 Mod |
                 Struct |
@@ -396,7 +396,7 @@ impl NameMapping {
     }
 
     /// Add all items from two vectors of old/new exports.
-    pub fn add(&mut self, old_items: Vec<Export<HirId>>, new_items: Vec<Export<HirId>>) {
+    pub fn add(&mut self, old_items: Vec<Export>, new_items: Vec<Export>) {
         for item in old_items {
             self.insert(item, true);
         }
@@ -407,9 +407,7 @@ impl NameMapping {
     }
 
     /// Drain the item pairs being stored.
-    pub fn drain(
-        &mut self,
-    ) -> impl Iterator<Item = (Option<Export<HirId>>, Option<Export<HirId>>)> + '_ {
+    pub fn drain(&mut self) -> impl Iterator<Item = (Option<Export>, Option<Export>)> + '_ {
         self.type_map
             .drain()
             .chain(self.value_map.drain())

src/traverse.rs

@@ -68,7 +68,7 @@ pub fn run_analysis(tcx: TyCtxt, old: DefId, new: DefId) -> ChangeSet {
 }
 
 // Get the visibility of the inner item, given the outer item's visibility.
-fn get_vis(outer_vis: Visibility, def: Export<HirId>) -> Visibility {
+fn get_vis(outer_vis: Visibility, def: Export) -> Visibility {
     if outer_vis == Public {
         def.vis
     } else {
@@ -156,7 +156,8 @@ fn diff_structure<'tcx>(
             match items {
                 // an item pair is found
                 (Some(o), Some(n)) => {
-                    if let (Def(Mod, o_def_id), Def(Mod, n_def_id)) = (o.res, n.res) {
+                    let (o_res, n_res) = (o.res.expect_non_local(), n.res.expect_non_local());
+                    if let (Def(Mod, o_def_id), Def(Mod, n_def_id)) = (o_res, n_res) {
                         if visited.insert((o_def_id, n_def_id)) {
                             let o_vis = get_vis(old_vis, o);
                             let n_vis = get_vis(new_vis, n);
@@ -182,16 +183,16 @@ fn diff_structure<'tcx>(
 
                             mod_queue.push_back((o_def_id, n_def_id, o_vis, n_vis));
                         }
-                    } else if id_mapping.add_export(o.res, n.res) {
+                    } else if id_mapping.add_export(o_res, n_res) {
                         // struct constructors are weird/hard - let's go shopping!
                         if let (Def(Ctor(CtorOf::Struct, _), _), Def(Ctor(CtorOf::Struct, _), _)) =
-                            (o.res, n.res)
+                            (o_res, n_res)
                         {
                             continue;
                         }
 
-                        let o_def_id = o.res.def_id();
-                        let n_def_id = n.res.def_id();
+                        let o_def_id = o_res.def_id();
+                        let n_def_id = n_res.def_id();
                         let o_vis = get_vis(old_vis, o);
                         let n_vis = get_vis(new_vis, n);
 
@@ -211,7 +212,7 @@ fn diff_structure<'tcx>(
                             changes.add_change(ChangeType::ItemMadePublic, o_def_id, None);
                         }
 
-                        let (o_kind, n_kind) = match (o.res, n.res) {
+                        let (o_kind, n_kind) = match (o_res, n_res) {
                             (Res::Def(o_kind, _), Res::Def(n_kind, _)) => (o_kind, n_kind),
                             _ => {
                                 // a non-matching item pair (seriously broken though) -
@@ -257,7 +258,7 @@ fn diff_structure<'tcx>(
                             // that need to be compared
                             (Fn, Fn) => {
                                 diff_generics(changes, id_mapping, tcx, true, o_def_id, n_def_id);
-                                diff_fn(changes, tcx, o.res, n.res);
+                                diff_fn(changes, tcx, o_res, n_res);
                             }
                             // type aliases can declare generics, too
                             (TyAlias, TyAlias) => {
@@ -268,7 +269,7 @@ fn diff_structure<'tcx>(
                             // fields
                             (Struct, Struct) | (Union, Union) | (Enum, Enum) => {
                                 diff_generics(changes, id_mapping, tcx, false, o_def_id, n_def_id);
-                                diff_adts(changes, id_mapping, tcx, o.res, n.res);
+                                diff_adts(changes, id_mapping, tcx, o_res, n_res);
                             }
                             // trait definitions can declare generics and require us to check
                             // for trait item addition and removal, as well as changes to their
@@ -298,7 +299,7 @@ fn diff_structure<'tcx>(
                 // only an old item is found
                 (Some(o), None) => {
                     // struct constructors are weird/hard - let's go shopping!
-                    if let Def(Ctor(CtorOf::Struct, _), _) = o.res {
+                    if let Def(Ctor(CtorOf::Struct, _), _) = o.res.expect_non_local::<HirId>() {
                         continue;
                     }
 
@@ -310,7 +311,7 @@ fn diff_structure<'tcx>(
                 // only a new item is found
                 (None, Some(n)) => {
                     // struct constructors are weird/hard - let's go shopping!
-                    if let Def(Ctor(CtorOf::Struct, _), _) = n.res {
+                    if let Def(Ctor(CtorOf::Struct, _), _) = n.res.expect_non_local::<HirId>() {
                         continue;
                     }
 
@@ -327,7 +328,7 @@ fn diff_structure<'tcx>(
 
     // finally, process item additions and removals
     for n in additions {
-        let n_def_id = n.res.def_id();
+        let n_def_id = n.res.expect_non_local::<HirId>().def_id();
 
         if !id_mapping.contains_new_id(n_def_id) {
             id_mapping.add_non_mapped(n_def_id);
@@ -338,7 +339,7 @@ fn diff_structure<'tcx>(
     }
 
     for o in removals {
-        let o_def_id = o.res.def_id();
+        let o_def_id = o.res.expect_non_local::<HirId>().def_id();
 
         // reuse an already existing path change entry, if possible
         if id_mapping.contains_old_id(o_def_id) {