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-rw-r--r--compiler/rustc_trait_selection/src/traits/coherence.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/coherence.rs b/compiler/rustc_trait_selection/src/traits/coherence.rs
index 595337b2e91..63aacbe2e85 100644
--- a/compiler/rustc_trait_selection/src/traits/coherence.rs
+++ b/compiler/rustc_trait_selection/src/traits/coherence.rs
@@ -366,6 +366,7 @@ fn negative_impl_exists<'cx, 'tcx>(
         return true;
     }
 
+    // FIXME we should implement an `assemble_neg_candidates` fn
     for o in util::elaborate_predicates(infcx.tcx, iter::once(o.predicate)) {
         if resolve_negative_obligation(infcx, param_env, region_context, &o) {
             return true;