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Create bidirectional bounds between original and duplicated parameters.

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This commit is contained in:
Camille GILLOT
2022-11-11 18:08:55 +00:00
parent 49a5aa4f0c
commit c5949c8bee
5 changed files with 94 additions and 66 deletions
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18
compiler/rustc_ast_lowering/src/lib.rs
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@@ -61,8 +61,8 @@ use rustc_hir::def_id::{LocalDefId, CRATE_DEF_ID};
use rustc_hir::definitions::DefPathData;
use rustc_hir::{ConstArg, GenericArg, ItemLocalId, ParamName, TraitCandidate};
use rustc_index::vec::{Idx, IndexVec};
use rustc_middle::span_bug;
use rustc_middle::ty::{ResolverAstLowering, TyCtxt};
use rustc_middle::{bug, span_bug};
use rustc_session::parse::feature_err;
use rustc_span::hygiene::MacroKind;
use rustc_span::source_map::DesugaringKind;
@@ -1457,17 +1457,11 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
// frequently opened issues show.
let opaque_ty_span = self.mark_span_with_reason(DesugaringKind::OpaqueTy, span, None);
let opaque_ty_def_id = match origin {
hir::OpaqueTyOrigin::TyAlias => self.create_def(
self.current_hir_id_owner.def_id,
opaque_ty_node_id,
DefPathData::ImplTrait,
),
hir::OpaqueTyOrigin::FnReturn(fn_def_id) => {
self.create_def(fn_def_id, opaque_ty_node_id, DefPathData::ImplTrait)
}
hir::OpaqueTyOrigin::AsyncFn(..) => bug!("unreachable"),
};
let opaque_ty_def_id = self.create_def(
self.current_hir_id_owner.def_id,
opaque_ty_node_id,
DefPathData::ImplTrait,
);
debug!(?opaque_ty_def_id);
// Contains the new lifetime definitions created for the TAIT (if any).