1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/ui/unnamed_argument_mode.rs b/src/test/ui/unnamed_argument_mode.rs
new file mode 100644
index 000000000..5b7b4002f
--- /dev/null
+++ b/src/test/ui/unnamed_argument_mode.rs
@@ -0,0 +1,14 @@
+// run-pass
+// pretty-expanded FIXME #23616
+
+fn good(_a: &isize) {
+}
+
+// unnamed argument &isize is now parse x: &isize
+
+fn called<F>(_f: F) where F: FnOnce(&isize) {
+}
+
+pub fn main() {
+    called(good);
+}