From 66ac5a2d6380778e6ca29924e1c7f8287cb851a9 Mon Sep 17 00:00:00 2001
From: LeSeulArtichaut <leseulartichaut@gmail.com>
Date: Mon, 19 Oct 2020 23:14:28 +0200
Subject: [PATCH] Do not ICE on pattern that uses a binding multiple times in
 generator

---
 compiler/rustc_typeck/src/check/generator_interior.rs | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/compiler/rustc_typeck/src/check/generator_interior.rs b/compiler/rustc_typeck/src/check/generator_interior.rs
index 3fc5f02a4a4..4473aa2081f 100644
--- a/compiler/rustc_typeck/src/check/generator_interior.rs
+++ b/compiler/rustc_typeck/src/check/generator_interior.rs
@@ -250,10 +250,7 @@ impl<'a, 'tcx> Visitor<'tcx> for InteriorVisitor<'a, 'tcx> {
             let mut scope_var_ids =
                 self.guard_bindings.pop().expect("should have pushed at least one earlier");
             for var_id in scope_var_ids.drain(..) {
-                assert!(
-                    self.guard_bindings_set.remove(&var_id),
-                    "variable should be placed in scope earlier"
-                );
+                self.guard_bindings_set.remove(&var_id);
             }
         }
         self.visit_expr(body);