1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/ui/did_you_mean/replace-impl-infer-ty-from-trait.rs b/src/test/ui/did_you_mean/replace-impl-infer-ty-from-trait.rs
new file mode 100644
index 000000000..ddf39c9c8
--- /dev/null
+++ b/src/test/ui/did_you_mean/replace-impl-infer-ty-from-trait.rs
@@ -0,0 +1,15 @@
+// run-rustfix
+#![allow(unused)]
+
+trait Foo<T>: Sized {
+    fn bar(i: i32, t: T, s: &Self) -> (T, i32);
+}
+
+impl Foo<usize> for () {
+    fn bar(i: _, t: _, s: _) -> _ {
+        //~^ ERROR the placeholder `_` is not allowed within types on item signatures for functions
+        (1, 2)
+    }
+}
+
+fn main() {}