From 4a15157baddb266af94a58a0b9c88cf6f5c6540c Mon Sep 17 00:00:00 2001
From: Jack Wrenn <jack@wrenn.fyi>
Date: Thu, 21 Jul 2022 17:38:25 +0000
Subject: [PATCH] safe transmute: don't mark user impls as unambiguous

ref: https://github.com/rust-lang/rust/pull/92268#discussion_r925243794
---
 .../src/traits/select/candidate_assembly.rs                      | 1 -
 1 file changed, 1 deletion(-)

diff --git a/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs b/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs
index a18b835e70c..a60ce0f3437 100644
--- a/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs
+++ b/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs
@@ -884,7 +884,6 @@ fn assemble_candidates_for_transmutability(
         candidates: &mut SelectionCandidateSet<'tcx>,
     ) {
         if obligation.has_param_types_or_consts() {
-            candidates.ambiguous = false;
             return;
         }
 
-- 
2.44.0