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Auto merge of #106938 - GuillaumeGomez:normalize-projection-field-ty, r=oli-obk

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Add missing normalization for union fields types

Overshadows https://github.com/rust-lang/rust/pull/106808.
From the experiment https://github.com/rust-lang/rust/pull/103985.

In short, it allows to use projections as a type for union's fields.

cc `@compiler-errors`
r? `@oli-obk`
This commit is contained in:
bors 2023-02-09 07:08:19 +00:00
commit c40919b7a7
6 changed files with 81 additions and 1 deletions
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2
compiler/rustc_hir_analysis/src/check/check.rs
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@ -121,7 +121,7 @@ fn check_union_fields(tcx: TyCtxt<'_>, span: Span, item_def_id: LocalDefId) -> b
let param_env = tcx.param_env(item_def_id);
for field in &def.non_enum_variant().fields {
let field_ty = field.ty(tcx, substs);
let field_ty = tcx.normalize_erasing_regions(param_env, field.ty(tcx, substs));
if !allowed_union_field(field_ty, tcx, param_env) {
let (field_span, ty_span) = match tcx.hir().get_if_local(field.did) {