bjoernager/rust
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Add debug statements.

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This commit is contained in:
Camille GILLOT 2022-05-04 22:46:24 +02:00
parent 364bf39e31
commit bb6b433958
3 changed files with 7 additions and 1 deletions
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3
compiler/rustc_trait_selection/src/traits/util.rs
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@ -118,13 +118,14 @@ impl<'tcx> TraitAliasExpander<'tcx> {
// Get components of trait alias.
let predicates = tcx.super_predicates_of(trait_ref.def_id());
debug!(?predicates);
let items = predicates.predicates.iter().rev().filter_map(|(pred, span)| {
pred.subst_supertrait(tcx, &trait_ref)
.to_opt_poly_trait_pred()
.map(|trait_ref| item.clone_and_push(trait_ref.map_bound(|t| t.trait_ref), *span))
});
debug!("expand_trait_aliases: items={:?}", items.clone());
debug!("expand_trait_aliases: items={:?}", items.clone().collect::<Vec<_>>());
self.stack.extend(items);