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Remove unused part of return value from replace_bound_vars_with_placeholders

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This commit is contained in:
Matthew Jasper
2020-06-28 20:27:59 +01:00
parent 1b07991574
commit d4d9e7f67f
5 changed files with 12 additions and 20 deletions
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4
compiler/rustc_trait_selection/src/traits/select/confirmation.rs
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@@ -253,7 +253,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
let trait_obligations: Vec<PredicateObligation<'_>> =
self.infcx.commit_unconditionally(|_| {
let poly_trait_ref = obligation.predicate.to_poly_trait_ref();
let (trait_ref, _) =
let trait_ref =
self.infcx.replace_bound_vars_with_placeholders(&poly_trait_ref);
let cause = obligation.derived_cause(ImplDerivedObligation);
self.impl_or_trait_obligations(
@@ -437,7 +437,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
debug!("confirm_trait_alias_candidate({:?}, {:?})", obligation, alias_def_id);
self.infcx.commit_unconditionally(|_| {
let (predicate, _) =
let predicate =
self.infcx().replace_bound_vars_with_placeholders(&obligation.predicate);
let trait_ref = predicate.trait_ref;
let trait_def_id = trait_ref.def_id;