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Validate AggregateKind types in MIR

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This commit is contained in:
Michael Goulet 2024-01-19 19:47:00 +00:00
parent 32ec40c685
commit f26f52c42b
1 changed files with 61 additions and 1 deletions
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62
compiler/rustc_const_eval/src/transform/validate.rs
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@ -796,7 +796,67 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
}; };
} }
match rvalue { match rvalue {
Rvalue::Use(_) | Rvalue::CopyForDeref(_) | Rvalue::Aggregate(..) => {} Rvalue::Use(_) | Rvalue::CopyForDeref(_) => {}
Rvalue::Aggregate(kind, fields) => match **kind {
AggregateKind::Tuple => {}
AggregateKind::Array(dest) => {
for src in fields {
if !self.mir_assign_valid_types(src.ty(self.body, self.tcx), dest) {
self.fail(location, "array field has the wrong type");
}
}
}
AggregateKind::Adt(def_id, idx, args, _, Some(field)) => {
let adt_def = self.tcx.adt_def(def_id);
assert!(adt_def.is_union());
assert_eq!(idx, FIRST_VARIANT);
let dest = adt_def.non_enum_variant().fields[field].ty(self.tcx, args);
if fields.len() != 1 {
self.fail(location, "unions should have one initialized field");
}
if !self.mir_assign_valid_types(fields.raw[0].ty(self.body, self.tcx), dest) {
self.fail(location, "union field has the wrong type");
}
}
AggregateKind::Adt(def_id, idx, args, _, None) => {
let adt_def = self.tcx.adt_def(def_id);
assert!(!adt_def.is_union());
let variant = &adt_def.variants()[idx];
if variant.fields.len() != fields.len() {
self.fail(location, "adt has the wrong number of initialized fields");
}
for (src, dest) in std::iter::zip(fields, &variant.fields) {
if !self.mir_assign_valid_types(
src.ty(self.body, self.tcx),
dest.ty(self.tcx, args),
) {
self.fail(location, "adt field has the wrong type");
}
}
}
AggregateKind::Closure(_, args) => {
let upvars = args.as_closure().upvar_tys();
if upvars.len() != fields.len() {
self.fail(location, "closure has the wrong number of initialized fields");
}
for (src, dest) in std::iter::zip(fields, upvars) {
if !self.mir_assign_valid_types(src.ty(self.body, self.tcx), dest) {
self.fail(location, "closure field has the wrong type");
}
}
}
AggregateKind::Coroutine(_, args) => {
let upvars = args.as_coroutine().upvar_tys();
if upvars.len() != fields.len() {
self.fail(location, "coroutine has the wrong number of initialized fields");
}
for (src, dest) in std::iter::zip(fields, upvars) {
if !self.mir_assign_valid_types(src.ty(self.body, self.tcx), dest) {
self.fail(location, "coroutine field has the wrong type");
}
}
}
},
Rvalue::Ref(_, BorrowKind::Fake, _) => { Rvalue::Ref(_, BorrowKind::Fake, _) => {
if self.mir_phase >= MirPhase::Runtime(RuntimePhase::Initial) { if self.mir_phase >= MirPhase::Runtime(RuntimePhase::Initial) {
self.fail( self.fail(