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fix ptr_metadata_ty for DynStar type

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This commit is contained in:
Ralf Jung 2023-09-09 11:47:05 +02:00
parent a38a3bfc6d
commit 4999000da1
1 changed files with 3 additions and 1 deletions
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4
compiler/rustc_middle/src/ty/sty.rs
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@ -2735,6 +2735,8 @@ pub fn ptr_metadata_ty(
| ty::Error(_)
// Extern types have metadata = ().
| ty::Foreign(..)
// `dyn*` has no metadata
| ty::Dynamic(_, _, DynKind::DynStar)
// If returned by `struct_tail_without_normalization` this is a unit struct
// without any fields, or not a struct, and therefore is Sized.
| ty::Adt(..)
@ -2743,7 +2745,7 @@ pub fn ptr_metadata_ty(
| ty::Tuple(..) => (tcx.types.unit, false),
ty::Str | ty::Slice(_) => (tcx.types.usize, false),
ty::Dynamic(..) => {
ty::Dynamic(_, _, DynKind::Dyn) => {
let dyn_metadata = tcx.require_lang_item(LangItem::DynMetadata, None);
(tcx.type_of(dyn_metadata).instantiate(tcx, &[tail.into()]), false)
},