bjoernager/rust
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wf-check RPITs

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This commit is contained in:
lcnr 2024-02-27 15:00:22 +01:00
parent 91cae1dcdc
commit 93bc7a428c
10 changed files with 184 additions and 34 deletions
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13
compiler/rustc_ty_utils/src/implied_bounds.rs
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@ -121,18 +121,7 @@ fn assumed_wf_types<'tcx>(tcx: TyCtxt<'tcx>, def_id: LocalDefId) -> &'tcx [(Ty<'
}
}
DefKind::AssocConst | DefKind::AssocTy => tcx.assumed_wf_types(tcx.local_parent(def_id)),
DefKind::OpaqueTy => match tcx.def_kind(tcx.local_parent(def_id)) {
DefKind::TyAlias => ty::List::empty(),
DefKind::AssocTy => tcx.assumed_wf_types(tcx.local_parent(def_id)),
// Nested opaque types only occur in associated types:
// ` type Opaque<T> = impl Trait<&'static T, AssocTy = impl Nested>; `
// assumed_wf_types should include those of `Opaque<T>`, `Opaque<T>` itself
// and `&'static T`.
DefKind::OpaqueTy => bug!("unimplemented implied bounds for nested opaque types"),
def_kind => {
bug!("unimplemented implied bounds for opaque types with parent {def_kind:?}")
}
},
DefKind::OpaqueTy => bug!("implied bounds are not defined for opaques"),
DefKind::Mod
| DefKind::Struct
| DefKind::Union