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update TypeFlags to deal with missing ct substs

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This commit is contained in:
lcnr
2021-07-17 18:48:07 +02:00
parent cc47998e28
commit ab9108b70f
44 changed files with 305 additions and 166 deletions
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2
compiler/rustc_trait_selection/src/traits/mod.rs
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@@ -450,7 +450,7 @@ fn subst_and_check_impossible_predicates<'tcx>(
debug!("subst_and_check_impossible_predicates(key={:?})", key);
let mut predicates = tcx.predicates_of(key.0).instantiate(tcx, key.1).predicates;
predicates.retain(|predicate| !predicate.needs_subst());
predicates.retain(|predicate| !predicate.needs_subst(tcx));
let result = impossible_predicates(tcx, predicates);
debug!("subst_and_check_impossible_predicates(key={:?}) = {:?}", key, result);