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Allow the elaborator to only filter to real supertraits

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This commit is contained in:
Michael Goulet 2023-02-02 21:22:02 +00:00
parent 4560b61cd1
commit 7ec72efe10
7 changed files with 106 additions and 47 deletions
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5
compiler/rustc_trait_selection/src/solve/assembly/mod.rs
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@ -498,7 +498,10 @@ impl<'tcx> EvalCtxt<'_, 'tcx> {
let tcx = self.tcx();
let own_bounds: FxIndexSet<_> =
bounds.iter().map(|bound| bound.with_self_ty(tcx, self_ty)).collect();
for assumption in elaborate(tcx, own_bounds.iter().copied()) {
for assumption in elaborate(tcx, own_bounds.iter().copied())
// we only care about bounds that match the `Self` type
.filter_only_self()
{
// FIXME: Predicates are fully elaborated in the object type's existential bounds
// list. We want to only consider these pre-elaborated projections, and not other
// projection predicates that we reach by elaborating the principal trait ref,