1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/suggestions/fn-trait-notation.rs b/tests/ui/suggestions/fn-trait-notation.rs
new file mode 100644
index 00000000000..f0bb03315d9
--- /dev/null
+++ b/tests/ui/suggestions/fn-trait-notation.rs
@@ -0,0 +1,19 @@
+// run-rustfix
+fn e0658<F, G, H>(f: F, g: G, h: H) -> i32
+where
+    F: Fn<i32, Output = i32>, //~ ERROR E0658
+    G: Fn<(i32, i32, ), Output = (i32, i32)>, //~ ERROR E0658
+    H: Fn<(i32,), Output = i32>, //~ ERROR E0658
+{
+    f(3);
+    g(3, 4);
+    h(3)
+}
+
+fn main() {
+    e0658(
+        |a| a,
+        |a, b| (b, a),
+        |a| a,
+    );
+}