diff --git a/src/librustc_middle/mir/query.rs b/src/librustc_middle/mir/query.rs index d82faf3e5fbaa..1aae97cc2a894 100644 --- a/src/librustc_middle/mir/query.rs +++ b/src/librustc_middle/mir/query.rs @@ -244,6 +244,6 @@ pub enum ClosureOutlivesSubject<'tcx> { /// The constituent parts of an ADT or array. #[derive(Copy, Clone, Debug, HashStable)] pub struct DestructuredConst<'tcx> { - pub variant: VariantIdx, + pub variant: Option, pub fields: &'tcx [&'tcx ty::Const<'tcx>], } diff --git a/src/librustc_middle/ty/layout.rs b/src/librustc_middle/ty/layout.rs index 80f919d0c0329..68af22569e353 100644 --- a/src/librustc_middle/ty/layout.rs +++ b/src/librustc_middle/ty/layout.rs @@ -2001,6 +2001,8 @@ where } let fields = match this.ty.kind { + ty::Adt(def, _) if def.variants.is_empty() => + bug!("for_variant called on zero-variant enum"), ty::Adt(def, _) => def.variants[variant_index].fields.len(), _ => bug!(), }; diff --git a/src/librustc_middle/ty/mod.rs b/src/librustc_middle/ty/mod.rs index 93ef73171993c..51d4d75fb3a0a 100644 --- a/src/librustc_middle/ty/mod.rs +++ b/src/librustc_middle/ty/mod.rs @@ -2339,6 +2339,7 @@ impl<'tcx> AdtDef { /// Alternatively, if there is no explicit discriminant, returns the /// inferred discriminant directly. pub fn discriminant_def_for_variant(&self, variant_index: VariantIdx) -> (Option, u32) { + assert!(!self.variants.is_empty()); let mut explicit_index = variant_index.as_u32(); let expr_did; loop { diff --git a/src/librustc_middle/ty/print/pretty.rs b/src/librustc_middle/ty/print/pretty.rs index 17203fcce5e59..1a08639a533d5 100644 --- a/src/librustc_middle/ty/print/pretty.rs +++ b/src/librustc_middle/ty/print/pretty.rs @@ -1177,8 +1177,13 @@ pub trait PrettyPrinter<'tcx>: } p!(write(")")); } + ty::Adt(def, substs) if def.variants.is_empty() => { + p!(print_value_path(def.did, substs)); + } ty::Adt(def, substs) => { - let variant_def = &def.variants[contents.variant]; + let variant_id = + contents.variant.expect("destructed const of adt without variant id"); + let variant_def = &def.variants[variant_id]; p!(print_value_path(variant_def.def_id, substs)); match variant_def.ctor_kind { diff --git a/src/librustc_middle/ty/sty.rs b/src/librustc_middle/ty/sty.rs index cf11adb0285ac..b0addcb2bb683 100644 --- a/src/librustc_middle/ty/sty.rs +++ b/src/librustc_middle/ty/sty.rs @@ -2099,6 +2099,9 @@ impl<'tcx> TyS<'tcx> { variant_index: VariantIdx, ) -> Option> { match self.kind { + TyKind::Adt(adt, _) if adt.variants.is_empty() => { + bug!("discriminant_for_variant called on zero variant enum"); + } TyKind::Adt(adt, _) if adt.is_enum() => { Some(adt.discriminant_for_variant(tcx, variant_index)) } diff --git a/src/librustc_mir/const_eval/mod.rs b/src/librustc_mir/const_eval/mod.rs index 3539ccf5de038..ed992a5983954 100644 --- a/src/librustc_mir/const_eval/mod.rs +++ b/src/librustc_mir/const_eval/mod.rs @@ -30,8 +30,10 @@ pub(crate) fn const_caller_location( ConstValue::Scalar(loc_place.ptr) } -// this function uses `unwrap` copiously, because an already validated constant -// must have valid fields and can thus never fail outside of compiler bugs +/// This function uses `unwrap` copiously, because an already validated constant +/// must have valid fields and can thus never fail outside of compiler bugs. However, it is +/// invoked from the pretty printer, where it can receive enums with no variants and e.g. +/// `read_discriminant` needs to be able to handle that. pub(crate) fn destructure_const<'tcx>( tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, @@ -41,17 +43,21 @@ pub(crate) fn destructure_const<'tcx>( let ecx = mk_eval_cx(tcx, DUMMY_SP, param_env, false); let op = ecx.eval_const_to_op(val, None).unwrap(); - let variant = ecx.read_discriminant(op).unwrap().1; - // We go to `usize` as we cannot allocate anything bigger anyway. - let field_count = match val.ty.kind { - ty::Array(_, len) => usize::try_from(len.eval_usize(tcx, param_env)).unwrap(), - ty::Adt(def, _) => def.variants[variant].fields.len(), - ty::Tuple(substs) => substs.len(), + let (field_count, variant, down) = match val.ty.kind { + ty::Array(_, len) => (usize::try_from(len.eval_usize(tcx, param_env)).unwrap(), None, op), + ty::Adt(def, _) if def.variants.is_empty() => { + return mir::DestructuredConst { variant: None, fields: tcx.arena.alloc_slice(&[]) }; + } + ty::Adt(def, _) => { + let variant = ecx.read_discriminant(op).unwrap().1; + let down = ecx.operand_downcast(op, variant).unwrap(); + (def.variants[variant].fields.len(), Some(variant), down) + } + ty::Tuple(substs) => (substs.len(), None, op), _ => bug!("cannot destructure constant {:?}", val), }; - let down = ecx.operand_downcast(op, variant).unwrap(); let fields_iter = (0..field_count).map(|i| { let field_op = ecx.operand_field(down, i).unwrap(); let val = op_to_const(&ecx, field_op); diff --git a/src/librustc_mir_build/hair/pattern/_match.rs b/src/librustc_mir_build/hair/pattern/_match.rs index 4a4de6c420bd8..6ac5d41ec6135 100644 --- a/src/librustc_mir_build/hair/pattern/_match.rs +++ b/src/librustc_mir_build/hair/pattern/_match.rs @@ -800,7 +800,11 @@ impl<'tcx> Constructor<'tcx> { assert!(!adt.is_enum()); VariantIdx::new(0) } - ConstantValue(c) => cx.tcx.destructure_const(cx.param_env.and(c)).variant, + ConstantValue(c) => cx + .tcx + .destructure_const(cx.param_env.and(c)) + .variant + .expect("destructed const of adt without variant id"), _ => bug!("bad constructor {:?} for adt {:?}", self, adt), } } diff --git a/src/librustc_mir_build/hair/pattern/const_to_pat.rs b/src/librustc_mir_build/hair/pattern/const_to_pat.rs index 1aed8e844b60b..6dd7e0871b45e 100644 --- a/src/librustc_mir_build/hair/pattern/const_to_pat.rs +++ b/src/librustc_mir_build/hair/pattern/const_to_pat.rs @@ -275,7 +275,9 @@ impl<'a, 'tcx> ConstToPat<'a, 'tcx> { PatKind::Variant { adt_def, substs, - variant_index: destructured.variant, + variant_index: destructured + .variant + .expect("destructed const of adt without variant id"), subpatterns: field_pats(destructured.fields), } } diff --git a/src/test/mir-opt/issue-72181-1.rs b/src/test/mir-opt/issue-72181-1.rs new file mode 100644 index 0000000000000..6d65f847a2c63 --- /dev/null +++ b/src/test/mir-opt/issue-72181-1.rs @@ -0,0 +1,21 @@ +// compile-flags: -Z mir-opt-level=1 +// Regression test for #72181, this ICE requires `-Z mir-opt-level=1` flags. + +#![feature(never_type)] +#![allow(unused, invalid_value)] + +enum Void {} + +// EMIT_MIR rustc.f.mir_map.0.mir +fn f(v: Void) -> ! { + match v {} +} + +// EMIT_MIR rustc.main.mir_map.0.mir +fn main() { + let v: Void = unsafe { + std::mem::transmute::<(), Void>(()) + }; + + f(v); +} diff --git a/src/test/mir-opt/issue-72181-1/rustc.f.mir_map.0.mir b/src/test/mir-opt/issue-72181-1/rustc.f.mir_map.0.mir new file mode 100644 index 0000000000000..1821365898e53 --- /dev/null +++ b/src/test/mir-opt/issue-72181-1/rustc.f.mir_map.0.mir @@ -0,0 +1,37 @@ +// MIR for `f` 0 mir_map + +fn f(_1: Void) -> ! { + debug v => _1; // in scope 0 at $DIR/issue-72181-1.rs:10:6: 10:7 + let mut _0: !; // return place in scope 0 at $DIR/issue-72181-1.rs:10:18: 10:19 + let mut _2: !; // in scope 0 at $DIR/issue-72181-1.rs:10:20: 12:2 + let mut _3: !; // in scope 0 at $DIR/issue-72181-1.rs:11:5: 11:15 + + bb0: { + StorageLive(_2); // scope 0 at $DIR/issue-72181-1.rs:10:20: 12:2 + StorageLive(_3); // scope 0 at $DIR/issue-72181-1.rs:11:5: 11:15 + FakeRead(ForMatchedPlace, _1); // scope 0 at $DIR/issue-72181-1.rs:11:11: 11:12 + unreachable; // scope 0 at $DIR/issue-72181-1.rs:11:11: 11:12 + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181-1.rs:10:1: 12:2 + } + + bb2: { + unreachable; // scope 0 at $DIR/issue-72181-1.rs:11:5: 11:15 + } + + bb3: { + StorageDead(_3); // scope 0 at $DIR/issue-72181-1.rs:11:14: 11:15 + unreachable; // scope 0 at $DIR/issue-72181-1.rs:10:20: 12:2 + } + + bb4: { + StorageDead(_2); // scope 0 at $DIR/issue-72181-1.rs:12:1: 12:2 + goto -> bb5; // scope 0 at $DIR/issue-72181-1.rs:12:2: 12:2 + } + + bb5: { + return; // scope 0 at $DIR/issue-72181-1.rs:12:2: 12:2 + } +} diff --git a/src/test/mir-opt/issue-72181-1/rustc.main.mir_map.0.mir b/src/test/mir-opt/issue-72181-1/rustc.main.mir_map.0.mir new file mode 100644 index 0000000000000..b87d0294fb87b --- /dev/null +++ b/src/test/mir-opt/issue-72181-1/rustc.main.mir_map.0.mir @@ -0,0 +1,67 @@ +// MIR for `main` 0 mir_map + +| User Type Annotations +| 0: Canonical { max_universe: U0, variables: [], value: Ty(Void) } at $DIR/issue-72181-1.rs:16:12: 16:16 +| 1: Canonical { max_universe: U0, variables: [], value: Ty(Void) } at $DIR/issue-72181-1.rs:16:12: 16:16 +| +fn main() -> () { + let mut _0: (); // return place in scope 0 at $DIR/issue-72181-1.rs:15:11: 15:11 + let mut _1: !; // in scope 0 at $DIR/issue-72181-1.rs:15:11: 21:2 + let _2: Void as UserTypeProjection { base: UserType(0), projs: [] }; // in scope 0 at $DIR/issue-72181-1.rs:16:9: 16:10 + let mut _3: (); // in scope 0 at $DIR/issue-72181-1.rs:17:41: 17:43 + let _4: !; // in scope 0 at $DIR/issue-72181-1.rs:20:5: 20:9 + let mut _5: Void; // in scope 0 at $DIR/issue-72181-1.rs:20:7: 20:8 + scope 1 { + debug v => _2; // in scope 1 at $DIR/issue-72181-1.rs:16:9: 16:10 + } + scope 2 { + } + + bb0: { + StorageLive(_2); // scope 0 at $DIR/issue-72181-1.rs:16:9: 16:10 + StorageLive(_3); // scope 2 at $DIR/issue-72181-1.rs:17:41: 17:43 + _3 = (); // scope 2 at $DIR/issue-72181-1.rs:17:41: 17:43 + _2 = const std::intrinsics::transmute::<(), Void>(move _3) -> [return: bb2, unwind: bb1]; // scope 2 at $DIR/issue-72181-1.rs:17:9: 17:44 + // ty::Const + // + ty: unsafe extern "rust-intrinsic" fn(()) -> Void {std::intrinsics::transmute::<(), Void>} + // + val: Value(Scalar()) + // mir::Constant + // + span: $DIR/issue-72181-1.rs:17:9: 17:40 + // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(()) -> Void {std::intrinsics::transmute::<(), Void>}, val: Value(Scalar()) } + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181-1.rs:15:1: 21:2 + } + + bb2: { + StorageDead(_3); // scope 2 at $DIR/issue-72181-1.rs:17:43: 17:44 + FakeRead(ForLet, _2); // scope 0 at $DIR/issue-72181-1.rs:16:9: 16:10 + AscribeUserType(_2, o, UserTypeProjection { base: UserType(1), projs: [] }); // scope 0 at $DIR/issue-72181-1.rs:16:12: 16:16 + StorageLive(_4); // scope 1 at $DIR/issue-72181-1.rs:20:5: 20:9 + StorageLive(_5); // scope 1 at $DIR/issue-72181-1.rs:20:7: 20:8 + _5 = move _2; // scope 1 at $DIR/issue-72181-1.rs:20:7: 20:8 + const f(move _5) -> bb1; // scope 1 at $DIR/issue-72181-1.rs:20:5: 20:9 + // ty::Const + // + ty: fn(Void) -> ! {f} + // + val: Value(Scalar()) + // mir::Constant + // + span: $DIR/issue-72181-1.rs:20:5: 20:6 + // + literal: Const { ty: fn(Void) -> ! {f}, val: Value(Scalar()) } + } + + bb3: { + StorageDead(_5); // scope 1 at $DIR/issue-72181-1.rs:20:8: 20:9 + StorageDead(_4); // scope 1 at $DIR/issue-72181-1.rs:20:9: 20:10 + StorageDead(_2); // scope 0 at $DIR/issue-72181-1.rs:21:1: 21:2 + unreachable; // scope 0 at $DIR/issue-72181-1.rs:15:11: 21:2 + } + + bb4: { + goto -> bb5; // scope 0 at $DIR/issue-72181-1.rs:21:2: 21:2 + } + + bb5: { + return; // scope 0 at $DIR/issue-72181-1.rs:21:2: 21:2 + } +} diff --git a/src/test/mir-opt/issue-72181.rs b/src/test/mir-opt/issue-72181.rs new file mode 100644 index 0000000000000..9373ce12032b9 --- /dev/null +++ b/src/test/mir-opt/issue-72181.rs @@ -0,0 +1,28 @@ +// compile-flags: -Z mir-opt-level=1 +// Regression test for #72181, this ICE requires `-Z mir-opt-level=1` flags. + +use std::mem; + +#[derive(Copy, Clone)] +enum Never {} + +union Foo { + a: u64, + b: Never +} + +// EMIT_MIR_FOR_EACH_BIT_WIDTH +// EMIT_MIR rustc.foo.mir_map.0.mir +fn foo(xs: [(Never, u32); 1]) -> u32 { xs[0].1 } + +// EMIT_MIR rustc.bar.mir_map.0.mir +fn bar([(_, x)]: [(Never, u32); 1]) -> u32 { x } + +// EMIT_MIR_FOR_EACH_BIT_WIDTH +// EMIT_MIR rustc.main.mir_map.0.mir +fn main() { + let _ = mem::size_of::(); + + let f = [Foo { a: 42 }, Foo { a: 10 }]; + let _ = unsafe { f[0].a }; +} diff --git a/src/test/mir-opt/issue-72181/32bit/rustc.bar.mir_map.0.mir b/src/test/mir-opt/issue-72181/32bit/rustc.bar.mir_map.0.mir new file mode 100644 index 0000000000000..29654c2b1f83b --- /dev/null +++ b/src/test/mir-opt/issue-72181/32bit/rustc.bar.mir_map.0.mir @@ -0,0 +1,25 @@ +// MIR for `bar` 0 mir_map + +fn bar(_1: [(Never, u32); 1]) -> u32 { + let mut _0: u32; // return place in scope 0 at $DIR/issue-72181.rs:19:40: 19:43 + let _2: u32; // in scope 0 at $DIR/issue-72181.rs:19:13: 19:14 + scope 1 { + debug x => _2; // in scope 1 at $DIR/issue-72181.rs:19:13: 19:14 + } + + bb0: { + StorageLive(_2); // scope 0 at $DIR/issue-72181.rs:19:13: 19:14 + _2 = (_1[0 of 1].1: u32); // scope 0 at $DIR/issue-72181.rs:19:13: 19:14 + _0 = _2; // scope 1 at $DIR/issue-72181.rs:19:46: 19:47 + StorageDead(_2); // scope 0 at $DIR/issue-72181.rs:19:48: 19:49 + goto -> bb2; // scope 0 at $DIR/issue-72181.rs:19:49: 19:49 + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181.rs:19:1: 19:49 + } + + bb2: { + return; // scope 0 at $DIR/issue-72181.rs:19:49: 19:49 + } +} diff --git a/src/test/mir-opt/issue-72181/32bit/rustc.foo.mir_map.0.mir b/src/test/mir-opt/issue-72181/32bit/rustc.foo.mir_map.0.mir new file mode 100644 index 0000000000000..776eb61a5264f --- /dev/null +++ b/src/test/mir-opt/issue-72181/32bit/rustc.foo.mir_map.0.mir @@ -0,0 +1,37 @@ +// MIR for `foo` 0 mir_map + +fn foo(_1: [(Never, u32); 1]) -> u32 { + debug xs => _1; // in scope 0 at $DIR/issue-72181.rs:16:8: 16:10 + let mut _0: u32; // return place in scope 0 at $DIR/issue-72181.rs:16:34: 16:37 + let _2: usize; // in scope 0 at $DIR/issue-72181.rs:16:43: 16:44 + let mut _3: usize; // in scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + let mut _4: bool; // in scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + + bb0: { + StorageLive(_2); // scope 0 at $DIR/issue-72181.rs:16:43: 16:44 + _2 = const 0usize; // scope 0 at $DIR/issue-72181.rs:16:43: 16:44 + // ty::Const + // + ty: usize + // + val: Value(Scalar(0x00000000)) + // mir::Constant + // + span: $DIR/issue-72181.rs:16:43: 16:44 + // + literal: Const { ty: usize, val: Value(Scalar(0x00000000)) } + _3 = Len(_1); // scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + _4 = Lt(_2, _3); // scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + assert(move _4, "index out of bounds: the len is {} but the index is {}", move _3, _2) -> [success: bb2, unwind: bb1]; // scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181.rs:16:1: 16:49 + } + + bb2: { + _0 = (_1[_2].1: u32); // scope 0 at $DIR/issue-72181.rs:16:40: 16:47 + StorageDead(_2); // scope 0 at $DIR/issue-72181.rs:16:48: 16:49 + goto -> bb3; // scope 0 at $DIR/issue-72181.rs:16:49: 16:49 + } + + bb3: { + return; // scope 0 at $DIR/issue-72181.rs:16:49: 16:49 + } +} diff --git a/src/test/mir-opt/issue-72181/32bit/rustc.main.mir_map.0.mir b/src/test/mir-opt/issue-72181/32bit/rustc.main.mir_map.0.mir new file mode 100644 index 0000000000000..aa44dcd8eaee3 --- /dev/null +++ b/src/test/mir-opt/issue-72181/32bit/rustc.main.mir_map.0.mir @@ -0,0 +1,93 @@ +// MIR for `main` 0 mir_map + +fn main() -> () { + let mut _0: (); // return place in scope 0 at $DIR/issue-72181.rs:23:11: 23:11 + let mut _1: usize; // in scope 0 at $DIR/issue-72181.rs:24:13: 24:34 + let mut _3: Foo; // in scope 0 at $DIR/issue-72181.rs:26:14: 26:27 + let mut _4: Foo; // in scope 0 at $DIR/issue-72181.rs:26:29: 26:42 + let mut _5: u64; // in scope 0 at $DIR/issue-72181.rs:27:13: 27:30 + let _6: usize; // in scope 0 at $DIR/issue-72181.rs:27:24: 27:25 + let mut _7: usize; // in scope 0 at $DIR/issue-72181.rs:27:22: 27:26 + let mut _8: bool; // in scope 0 at $DIR/issue-72181.rs:27:22: 27:26 + scope 1 { + let _2: [Foo; 2]; // in scope 1 at $DIR/issue-72181.rs:26:9: 26:10 + scope 2 { + debug f => _2; // in scope 2 at $DIR/issue-72181.rs:26:9: 26:10 + scope 3 { + } + scope 4 { + } + } + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/issue-72181.rs:24:13: 24:34 + _1 = const std::mem::size_of::() -> [return: bb2, unwind: bb1]; // scope 0 at $DIR/issue-72181.rs:24:13: 24:34 + // ty::Const + // + ty: fn() -> usize {std::mem::size_of::} + // + val: Value(Scalar()) + // mir::Constant + // + span: $DIR/issue-72181.rs:24:13: 24:32 + // + literal: Const { ty: fn() -> usize {std::mem::size_of::}, val: Value(Scalar()) } + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181.rs:23:1: 28:2 + } + + bb2: { + StorageDead(_1); // scope 0 at $DIR/issue-72181.rs:24:34: 24:35 + StorageLive(_2); // scope 1 at $DIR/issue-72181.rs:26:9: 26:10 + StorageLive(_3); // scope 1 at $DIR/issue-72181.rs:26:14: 26:27 + _3 = Foo { a: const 42u64 }; // scope 1 at $DIR/issue-72181.rs:26:14: 26:27 + // ty::Const + // + ty: u64 + // + val: Value(Scalar(0x000000000000002a)) + // mir::Constant + // + span: $DIR/issue-72181.rs:26:23: 26:25 + // + literal: Const { ty: u64, val: Value(Scalar(0x000000000000002a)) } + StorageLive(_4); // scope 1 at $DIR/issue-72181.rs:26:29: 26:42 + _4 = Foo { a: const 10u64 }; // scope 1 at $DIR/issue-72181.rs:26:29: 26:42 + // ty::Const + // + ty: u64 + // + val: Value(Scalar(0x000000000000000a)) + // mir::Constant + // + span: $DIR/issue-72181.rs:26:38: 26:40 + // + literal: Const { ty: u64, val: Value(Scalar(0x000000000000000a)) } + _2 = [move _3, move _4]; // scope 1 at $DIR/issue-72181.rs:26:13: 26:43 + StorageDead(_4); // scope 1 at $DIR/issue-72181.rs:26:42: 26:43 + StorageDead(_3); // scope 1 at $DIR/issue-72181.rs:26:42: 26:43 + FakeRead(ForLet, _2); // scope 1 at $DIR/issue-72181.rs:26:9: 26:10 + StorageLive(_5); // scope 2 at $DIR/issue-72181.rs:27:13: 27:30 + StorageLive(_6); // scope 4 at $DIR/issue-72181.rs:27:24: 27:25 + _6 = const 0usize; // scope 4 at $DIR/issue-72181.rs:27:24: 27:25 + // ty::Const + // + ty: usize + // + val: Value(Scalar(0x00000000)) + // mir::Constant + // + span: $DIR/issue-72181.rs:27:24: 27:25 + // + literal: Const { ty: usize, val: Value(Scalar(0x00000000)) } + _7 = Len(_2); // scope 4 at $DIR/issue-72181.rs:27:22: 27:26 + _8 = Lt(_6, _7); // scope 4 at $DIR/issue-72181.rs:27:22: 27:26 + assert(move _8, "index out of bounds: the len is {} but the index is {}", move _7, _6) -> [success: bb3, unwind: bb1]; // scope 4 at $DIR/issue-72181.rs:27:22: 27:26 + } + + bb3: { + _5 = (_2[_6].0: u64); // scope 4 at $DIR/issue-72181.rs:27:22: 27:28 + StorageDead(_6); // scope 2 at $DIR/issue-72181.rs:27:30: 27:31 + StorageDead(_5); // scope 2 at $DIR/issue-72181.rs:27:30: 27:31 + _0 = const (); // scope 0 at $DIR/issue-72181.rs:23:11: 28:2 + // ty::Const + // + ty: () + // + val: Value(Scalar()) + // mir::Constant + // + span: $DIR/issue-72181.rs:23:11: 28:2 + // + literal: Const { ty: (), val: Value(Scalar()) } + StorageDead(_2); // scope 1 at $DIR/issue-72181.rs:28:1: 28:2 + goto -> bb4; // scope 0 at $DIR/issue-72181.rs:28:2: 28:2 + } + + bb4: { + return; // scope 0 at $DIR/issue-72181.rs:28:2: 28:2 + } +} diff --git a/src/test/mir-opt/issue-72181/64bit/rustc.bar.mir_map.0.mir b/src/test/mir-opt/issue-72181/64bit/rustc.bar.mir_map.0.mir new file mode 100644 index 0000000000000..29654c2b1f83b --- /dev/null +++ b/src/test/mir-opt/issue-72181/64bit/rustc.bar.mir_map.0.mir @@ -0,0 +1,25 @@ +// MIR for `bar` 0 mir_map + +fn bar(_1: [(Never, u32); 1]) -> u32 { + let mut _0: u32; // return place in scope 0 at $DIR/issue-72181.rs:19:40: 19:43 + let _2: u32; // in scope 0 at $DIR/issue-72181.rs:19:13: 19:14 + scope 1 { + debug x => _2; // in scope 1 at $DIR/issue-72181.rs:19:13: 19:14 + } + + bb0: { + StorageLive(_2); // scope 0 at $DIR/issue-72181.rs:19:13: 19:14 + _2 = (_1[0 of 1].1: u32); // scope 0 at $DIR/issue-72181.rs:19:13: 19:14 + _0 = _2; // scope 1 at $DIR/issue-72181.rs:19:46: 19:47 + StorageDead(_2); // scope 0 at $DIR/issue-72181.rs:19:48: 19:49 + goto -> bb2; // scope 0 at $DIR/issue-72181.rs:19:49: 19:49 + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181.rs:19:1: 19:49 + } + + bb2: { + return; // scope 0 at $DIR/issue-72181.rs:19:49: 19:49 + } +} diff --git a/src/test/mir-opt/issue-72181/64bit/rustc.foo.mir_map.0.mir b/src/test/mir-opt/issue-72181/64bit/rustc.foo.mir_map.0.mir new file mode 100644 index 0000000000000..639019eaf9ccc --- /dev/null +++ b/src/test/mir-opt/issue-72181/64bit/rustc.foo.mir_map.0.mir @@ -0,0 +1,37 @@ +// MIR for `foo` 0 mir_map + +fn foo(_1: [(Never, u32); 1]) -> u32 { + debug xs => _1; // in scope 0 at $DIR/issue-72181.rs:16:8: 16:10 + let mut _0: u32; // return place in scope 0 at $DIR/issue-72181.rs:16:34: 16:37 + let _2: usize; // in scope 0 at $DIR/issue-72181.rs:16:43: 16:44 + let mut _3: usize; // in scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + let mut _4: bool; // in scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + + bb0: { + StorageLive(_2); // scope 0 at $DIR/issue-72181.rs:16:43: 16:44 + _2 = const 0usize; // scope 0 at $DIR/issue-72181.rs:16:43: 16:44 + // ty::Const + // + ty: usize + // + val: Value(Scalar(0x0000000000000000)) + // mir::Constant + // + span: $DIR/issue-72181.rs:16:43: 16:44 + // + literal: Const { ty: usize, val: Value(Scalar(0x0000000000000000)) } + _3 = Len(_1); // scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + _4 = Lt(_2, _3); // scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + assert(move _4, "index out of bounds: the len is {} but the index is {}", move _3, _2) -> [success: bb2, unwind: bb1]; // scope 0 at $DIR/issue-72181.rs:16:40: 16:45 + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181.rs:16:1: 16:49 + } + + bb2: { + _0 = (_1[_2].1: u32); // scope 0 at $DIR/issue-72181.rs:16:40: 16:47 + StorageDead(_2); // scope 0 at $DIR/issue-72181.rs:16:48: 16:49 + goto -> bb3; // scope 0 at $DIR/issue-72181.rs:16:49: 16:49 + } + + bb3: { + return; // scope 0 at $DIR/issue-72181.rs:16:49: 16:49 + } +} diff --git a/src/test/mir-opt/issue-72181/64bit/rustc.main.mir_map.0.mir b/src/test/mir-opt/issue-72181/64bit/rustc.main.mir_map.0.mir new file mode 100644 index 0000000000000..4098e0e295c5d --- /dev/null +++ b/src/test/mir-opt/issue-72181/64bit/rustc.main.mir_map.0.mir @@ -0,0 +1,93 @@ +// MIR for `main` 0 mir_map + +fn main() -> () { + let mut _0: (); // return place in scope 0 at $DIR/issue-72181.rs:23:11: 23:11 + let mut _1: usize; // in scope 0 at $DIR/issue-72181.rs:24:13: 24:34 + let mut _3: Foo; // in scope 0 at $DIR/issue-72181.rs:26:14: 26:27 + let mut _4: Foo; // in scope 0 at $DIR/issue-72181.rs:26:29: 26:42 + let mut _5: u64; // in scope 0 at $DIR/issue-72181.rs:27:13: 27:30 + let _6: usize; // in scope 0 at $DIR/issue-72181.rs:27:24: 27:25 + let mut _7: usize; // in scope 0 at $DIR/issue-72181.rs:27:22: 27:26 + let mut _8: bool; // in scope 0 at $DIR/issue-72181.rs:27:22: 27:26 + scope 1 { + let _2: [Foo; 2]; // in scope 1 at $DIR/issue-72181.rs:26:9: 26:10 + scope 2 { + debug f => _2; // in scope 2 at $DIR/issue-72181.rs:26:9: 26:10 + scope 3 { + } + scope 4 { + } + } + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/issue-72181.rs:24:13: 24:34 + _1 = const std::mem::size_of::() -> [return: bb2, unwind: bb1]; // scope 0 at $DIR/issue-72181.rs:24:13: 24:34 + // ty::Const + // + ty: fn() -> usize {std::mem::size_of::} + // + val: Value(Scalar()) + // mir::Constant + // + span: $DIR/issue-72181.rs:24:13: 24:32 + // + literal: Const { ty: fn() -> usize {std::mem::size_of::}, val: Value(Scalar()) } + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181.rs:23:1: 28:2 + } + + bb2: { + StorageDead(_1); // scope 0 at $DIR/issue-72181.rs:24:34: 24:35 + StorageLive(_2); // scope 1 at $DIR/issue-72181.rs:26:9: 26:10 + StorageLive(_3); // scope 1 at $DIR/issue-72181.rs:26:14: 26:27 + _3 = Foo { a: const 42u64 }; // scope 1 at $DIR/issue-72181.rs:26:14: 26:27 + // ty::Const + // + ty: u64 + // + val: Value(Scalar(0x000000000000002a)) + // mir::Constant + // + span: $DIR/issue-72181.rs:26:23: 26:25 + // + literal: Const { ty: u64, val: Value(Scalar(0x000000000000002a)) } + StorageLive(_4); // scope 1 at $DIR/issue-72181.rs:26:29: 26:42 + _4 = Foo { a: const 10u64 }; // scope 1 at $DIR/issue-72181.rs:26:29: 26:42 + // ty::Const + // + ty: u64 + // + val: Value(Scalar(0x000000000000000a)) + // mir::Constant + // + span: $DIR/issue-72181.rs:26:38: 26:40 + // + literal: Const { ty: u64, val: Value(Scalar(0x000000000000000a)) } + _2 = [move _3, move _4]; // scope 1 at $DIR/issue-72181.rs:26:13: 26:43 + StorageDead(_4); // scope 1 at $DIR/issue-72181.rs:26:42: 26:43 + StorageDead(_3); // scope 1 at $DIR/issue-72181.rs:26:42: 26:43 + FakeRead(ForLet, _2); // scope 1 at $DIR/issue-72181.rs:26:9: 26:10 + StorageLive(_5); // scope 2 at $DIR/issue-72181.rs:27:13: 27:30 + StorageLive(_6); // scope 4 at $DIR/issue-72181.rs:27:24: 27:25 + _6 = const 0usize; // scope 4 at $DIR/issue-72181.rs:27:24: 27:25 + // ty::Const + // + ty: usize + // + val: Value(Scalar(0x0000000000000000)) + // mir::Constant + // + span: $DIR/issue-72181.rs:27:24: 27:25 + // + literal: Const { ty: usize, val: Value(Scalar(0x0000000000000000)) } + _7 = Len(_2); // scope 4 at $DIR/issue-72181.rs:27:22: 27:26 + _8 = Lt(_6, _7); // scope 4 at $DIR/issue-72181.rs:27:22: 27:26 + assert(move _8, "index out of bounds: the len is {} but the index is {}", move _7, _6) -> [success: bb3, unwind: bb1]; // scope 4 at $DIR/issue-72181.rs:27:22: 27:26 + } + + bb3: { + _5 = (_2[_6].0: u64); // scope 4 at $DIR/issue-72181.rs:27:22: 27:28 + StorageDead(_6); // scope 2 at $DIR/issue-72181.rs:27:30: 27:31 + StorageDead(_5); // scope 2 at $DIR/issue-72181.rs:27:30: 27:31 + _0 = const (); // scope 0 at $DIR/issue-72181.rs:23:11: 28:2 + // ty::Const + // + ty: () + // + val: Value(Scalar()) + // mir::Constant + // + span: $DIR/issue-72181.rs:23:11: 28:2 + // + literal: Const { ty: (), val: Value(Scalar()) } + StorageDead(_2); // scope 1 at $DIR/issue-72181.rs:28:1: 28:2 + goto -> bb4; // scope 0 at $DIR/issue-72181.rs:28:2: 28:2 + } + + bb4: { + return; // scope 0 at $DIR/issue-72181.rs:28:2: 28:2 + } +} diff --git a/src/test/mir-opt/issue-72181/rustc.bar.mir_map.0.mir b/src/test/mir-opt/issue-72181/rustc.bar.mir_map.0.mir new file mode 100644 index 0000000000000..3b6dc46d055cd --- /dev/null +++ b/src/test/mir-opt/issue-72181/rustc.bar.mir_map.0.mir @@ -0,0 +1,25 @@ +// MIR for `bar` 0 mir_map + +fn bar(_1: [(Never, u32); 1]) -> u32 { + let mut _0: u32; // return place in scope 0 at $DIR/issue-72181.rs:18:40: 18:43 + let _2: u32; // in scope 0 at $DIR/issue-72181.rs:18:13: 18:14 + scope 1 { + debug x => _2; // in scope 1 at $DIR/issue-72181.rs:18:13: 18:14 + } + + bb0: { + StorageLive(_2); // scope 0 at $DIR/issue-72181.rs:18:13: 18:14 + _2 = (_1[0 of 1].1: u32); // scope 0 at $DIR/issue-72181.rs:18:13: 18:14 + _0 = _2; // scope 1 at $DIR/issue-72181.rs:18:46: 18:47 + StorageDead(_2); // scope 0 at $DIR/issue-72181.rs:18:48: 18:49 + goto -> bb2; // scope 0 at $DIR/issue-72181.rs:18:49: 18:49 + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181.rs:18:1: 18:49 + } + + bb2: { + return; // scope 0 at $DIR/issue-72181.rs:18:49: 18:49 + } +} diff --git a/src/test/mir-opt/issue-72181/rustc.foo.mir_map.0.mir b/src/test/mir-opt/issue-72181/rustc.foo.mir_map.0.mir new file mode 100644 index 0000000000000..2941e282cf42b --- /dev/null +++ b/src/test/mir-opt/issue-72181/rustc.foo.mir_map.0.mir @@ -0,0 +1,37 @@ +// MIR for `foo` 0 mir_map + +fn foo(_1: [(Never, u32); 1]) -> u32 { + debug xs => _1; // in scope 0 at $DIR/issue-72181.rs:15:8: 15:10 + let mut _0: u32; // return place in scope 0 at $DIR/issue-72181.rs:15:34: 15:37 + let _2: usize; // in scope 0 at $DIR/issue-72181.rs:15:43: 15:44 + let mut _3: usize; // in scope 0 at $DIR/issue-72181.rs:15:40: 15:45 + let mut _4: bool; // in scope 0 at $DIR/issue-72181.rs:15:40: 15:45 + + bb0: { + StorageLive(_2); // scope 0 at $DIR/issue-72181.rs:15:43: 15:44 + _2 = const 0usize; // scope 0 at $DIR/issue-72181.rs:15:43: 15:44 + // ty::Const + // + ty: usize + // + val: Value(Scalar(0x0000000000000000)) + // mir::Constant + // + span: $DIR/issue-72181.rs:15:43: 15:44 + // + literal: Const { ty: usize, val: Value(Scalar(0x0000000000000000)) } + _3 = Len(_1); // scope 0 at $DIR/issue-72181.rs:15:40: 15:45 + _4 = Lt(_2, _3); // scope 0 at $DIR/issue-72181.rs:15:40: 15:45 + assert(move _4, "index out of bounds: the len is {} but the index is {}", move _3, _2) -> [success: bb2, unwind: bb1]; // scope 0 at $DIR/issue-72181.rs:15:40: 15:45 + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181.rs:15:1: 15:49 + } + + bb2: { + _0 = (_1[_2].1: u32); // scope 0 at $DIR/issue-72181.rs:15:40: 15:47 + StorageDead(_2); // scope 0 at $DIR/issue-72181.rs:15:48: 15:49 + goto -> bb3; // scope 0 at $DIR/issue-72181.rs:15:49: 15:49 + } + + bb3: { + return; // scope 0 at $DIR/issue-72181.rs:15:49: 15:49 + } +} diff --git a/src/test/mir-opt/issue-72181/rustc.main.mir_map.0.mir b/src/test/mir-opt/issue-72181/rustc.main.mir_map.0.mir new file mode 100644 index 0000000000000..65f4de0e23545 --- /dev/null +++ b/src/test/mir-opt/issue-72181/rustc.main.mir_map.0.mir @@ -0,0 +1,93 @@ +// MIR for `main` 0 mir_map + +fn main() -> () { + let mut _0: (); // return place in scope 0 at $DIR/issue-72181.rs:21:11: 21:11 + let mut _1: usize; // in scope 0 at $DIR/issue-72181.rs:22:13: 22:34 + let mut _3: Foo; // in scope 0 at $DIR/issue-72181.rs:24:14: 24:27 + let mut _4: Foo; // in scope 0 at $DIR/issue-72181.rs:24:29: 24:42 + let mut _5: u64; // in scope 0 at $DIR/issue-72181.rs:25:13: 25:30 + let _6: usize; // in scope 0 at $DIR/issue-72181.rs:25:24: 25:25 + let mut _7: usize; // in scope 0 at $DIR/issue-72181.rs:25:22: 25:26 + let mut _8: bool; // in scope 0 at $DIR/issue-72181.rs:25:22: 25:26 + scope 1 { + let _2: [Foo; 2]; // in scope 1 at $DIR/issue-72181.rs:24:9: 24:10 + scope 2 { + debug f => _2; // in scope 2 at $DIR/issue-72181.rs:24:9: 24:10 + scope 3 { + } + scope 4 { + } + } + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/issue-72181.rs:22:13: 22:34 + _1 = const std::mem::size_of::() -> [return: bb2, unwind: bb1]; // scope 0 at $DIR/issue-72181.rs:22:13: 22:34 + // ty::Const + // + ty: fn() -> usize {std::mem::size_of::} + // + val: Value(Scalar()) + // mir::Constant + // + span: $DIR/issue-72181.rs:22:13: 22:32 + // + literal: Const { ty: fn() -> usize {std::mem::size_of::}, val: Value(Scalar()) } + } + + bb1 (cleanup): { + resume; // scope 0 at $DIR/issue-72181.rs:21:1: 26:2 + } + + bb2: { + StorageDead(_1); // scope 0 at $DIR/issue-72181.rs:22:34: 22:35 + StorageLive(_2); // scope 1 at $DIR/issue-72181.rs:24:9: 24:10 + StorageLive(_3); // scope 1 at $DIR/issue-72181.rs:24:14: 24:27 + _3 = Foo { a: const 42u64 }; // scope 1 at $DIR/issue-72181.rs:24:14: 24:27 + // ty::Const + // + ty: u64 + // + val: Value(Scalar(0x000000000000002a)) + // mir::Constant + // + span: $DIR/issue-72181.rs:24:23: 24:25 + // + literal: Const { ty: u64, val: Value(Scalar(0x000000000000002a)) } + StorageLive(_4); // scope 1 at $DIR/issue-72181.rs:24:29: 24:42 + _4 = Foo { a: const 10u64 }; // scope 1 at $DIR/issue-72181.rs:24:29: 24:42 + // ty::Const + // + ty: u64 + // + val: Value(Scalar(0x000000000000000a)) + // mir::Constant + // + span: $DIR/issue-72181.rs:24:38: 24:40 + // + literal: Const { ty: u64, val: Value(Scalar(0x000000000000000a)) } + _2 = [move _3, move _4]; // scope 1 at $DIR/issue-72181.rs:24:13: 24:43 + StorageDead(_4); // scope 1 at $DIR/issue-72181.rs:24:42: 24:43 + StorageDead(_3); // scope 1 at $DIR/issue-72181.rs:24:42: 24:43 + FakeRead(ForLet, _2); // scope 1 at $DIR/issue-72181.rs:24:9: 24:10 + StorageLive(_5); // scope 2 at $DIR/issue-72181.rs:25:13: 25:30 + StorageLive(_6); // scope 4 at $DIR/issue-72181.rs:25:24: 25:25 + _6 = const 0usize; // scope 4 at $DIR/issue-72181.rs:25:24: 25:25 + // ty::Const + // + ty: usize + // + val: Value(Scalar(0x0000000000000000)) + // mir::Constant + // + span: $DIR/issue-72181.rs:25:24: 25:25 + // + literal: Const { ty: usize, val: Value(Scalar(0x0000000000000000)) } + _7 = Len(_2); // scope 4 at $DIR/issue-72181.rs:25:22: 25:26 + _8 = Lt(_6, _7); // scope 4 at $DIR/issue-72181.rs:25:22: 25:26 + assert(move _8, "index out of bounds: the len is {} but the index is {}", move _7, _6) -> [success: bb3, unwind: bb1]; // scope 4 at $DIR/issue-72181.rs:25:22: 25:26 + } + + bb3: { + _5 = (_2[_6].0: u64); // scope 4 at $DIR/issue-72181.rs:25:22: 25:28 + StorageDead(_6); // scope 2 at $DIR/issue-72181.rs:25:30: 25:31 + StorageDead(_5); // scope 2 at $DIR/issue-72181.rs:25:30: 25:31 + _0 = const (); // scope 0 at $DIR/issue-72181.rs:21:11: 26:2 + // ty::Const + // + ty: () + // + val: Value(Scalar()) + // mir::Constant + // + span: $DIR/issue-72181.rs:21:11: 26:2 + // + literal: Const { ty: (), val: Value(Scalar()) } + StorageDead(_2); // scope 1 at $DIR/issue-72181.rs:26:1: 26:2 + goto -> bb4; // scope 0 at $DIR/issue-72181.rs:26:2: 26:2 + } + + bb4: { + return; // scope 0 at $DIR/issue-72181.rs:26:2: 26:2 + } +}