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Fix test for default body with impl

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This commit is contained in:
Michael Goulet 2022-10-05 04:16:05 +00:00
parent 21047f1a1c
commit 79450360d2
4 changed files with 28 additions and 8 deletions
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16
compiler/rustc_privacy/src/lib.rs
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@ -122,8 +122,20 @@ where
&mut self,
projection: ty::ProjectionTy<'tcx>,
) -> ControlFlow<V::BreakTy> {
let (trait_ref, assoc_substs) =
projection.trait_ref_and_own_substs(self.def_id_visitor.tcx());
let tcx = self.def_id_visitor.tcx();
let (trait_ref, assoc_substs) = if tcx.def_kind(projection.item_def_id)
!= DefKind::ImplTraitPlaceholder
{
projection.trait_ref_and_own_substs(tcx)
} else {
// HACK(RPITIT): Remove this when RPITITs are lowered to regular assoc tys
let def_id = tcx.impl_trait_in_trait_parent(projection.item_def_id);
let trait_generics = tcx.generics_of(def_id);
(
ty::TraitRef { def_id, substs: projection.substs.truncate_to(tcx, trait_generics) },
&projection.substs[trait_generics.count()..],
)
};
self.visit_trait(trait_ref)?;
if self.def_id_visitor.shallow() {
ControlFlow::CONTINUE