bjoernager/rust
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Add AliasKind::Weak for type aliases.

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Only use it when the type alias contains an opaque type.

Also does wf-checking on such type aliases.
This commit is contained in:
Oli Scherer 2023-03-07 12:03:11 +00:00
parent 4fdd07fe88
commit f3b7dd6388
86 changed files with 474 additions and 199 deletions
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1
compiler/rustc_const_eval/src/util/type_name.rs
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@ -63,6 +63,7 @@ impl<'tcx> Printer<'tcx> for AbsolutePathPrinter<'tcx> {
| ty::Generator(def_id, substs, _) => self.print_def_path(def_id, substs),
ty::Foreign(def_id) => self.print_def_path(def_id, &[]),
ty::Alias(ty::Weak, _) => bug!("type_name: unexpected weak projection"),
ty::Alias(ty::Inherent, _) => bug!("type_name: unexpected inherent projection"),
ty::GeneratorWitness(_) => bug!("type_name: unexpected `GeneratorWitness`"),
ty::GeneratorWitnessMIR(..) => bug!("type_name: unexpected `GeneratorWitnessMIR`"),