From fd22e87afc9082522bc7b52e32d25d43c64594e6 Mon Sep 17 00:00:00 2001
From: Bastian Kauschke <bastian_kauschke@hotmail.de>
Date: Fri, 18 Sep 2020 22:13:07 +0200
Subject: [PATCH] fix flag computation for `ExistentialPredicate::Projection`

---
 compiler/rustc_middle/src/ty/flags.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/compiler/rustc_middle/src/ty/flags.rs b/compiler/rustc_middle/src/ty/flags.rs
index c9a4022330a..e116f650c8d 100644
--- a/compiler/rustc_middle/src/ty/flags.rs
+++ b/compiler/rustc_middle/src/ty/flags.rs
@@ -160,9 +160,7 @@ impl FlagComputation {
                     match predicate {
                         ty::ExistentialPredicate::Trait(tr) => computation.add_substs(tr.substs),
                         ty::ExistentialPredicate::Projection(p) => {
-                            let mut proj_computation = FlagComputation::new();
-                            proj_computation.add_existential_projection(&p);
-                            self.add_bound_computation(proj_computation);
+                            computation.add_existential_projection(&p);
                         }
                         ty::ExistentialPredicate::AutoTrait(_) => {}
                     }