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-rw-r--r--src/test/ui/impl-trait/where-allowed.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/test/ui/impl-trait/where-allowed.rs b/src/test/ui/impl-trait/where-allowed.rs
index 2891cd59e3e..69f6d202f14 100644
--- a/src/test/ui/impl-trait/where-allowed.rs
+++ b/src/test/ui/impl-trait/where-allowed.rs
@@ -125,7 +125,7 @@ trait InTraitDefnReturn {
 // Allowed and disallowed in trait impls
 trait DummyTrait {
     type Out;
-    fn in_trait_impl_parameter(impl Debug);
+    fn in_trait_impl_parameter(_: impl Debug);
     fn in_trait_impl_return() -> Self::Out;
 }
 impl DummyTrait for () {