introduce enter_forall

2024-01-30 01:27:06 +00:00
parent af88f7db51
commit ac559af98f
15 changed files with 524 additions and 446 deletions
--- a/compiler/rustc_trait_selection/src/traits/coherence.rs
+++ b/compiler/rustc_trait_selection/src/traits/coherence.rs
@@ -971,7 +971,7 @@ impl<'a, 'tcx> ProofTreeVisitor<'tcx> for AmbiguityCausesVisitor<'a, 'tcx> {

        let Goal { param_env, predicate } = goal.goal();

-        // For bound predicates we simply call `infcx.instantiate_binder_with_placeholders`
+        // For bound predicates we simply call `infcx.enter_forall`
        // and then prove the resulting predicate as a nested goal.
        let trait_ref = match predicate.kind().no_bound_vars() {
            Some(ty::PredicateKind::Clause(ty::ClauseKind::Trait(tr))) => tr.trait_ref,