1 files changed, 21 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-18685.rs b/tests/ui/issues/issue-18685.rs
new file mode 100644
index 00000000000..bfe24b663f6
--- /dev/null
+++ b/tests/ui/issues/issue-18685.rs
@@ -0,0 +1,21 @@
+// run-pass
+// Test that the self param space is not used in a conflicting
+// manner by unboxed closures within a default method on a trait
+
+// pretty-expanded FIXME #23616
+
+trait Tr {
+    fn foo(&self);
+
+    fn bar(&self) {
+        (|| { self.foo() })()
+    }
+}
+
+impl Tr for () {
+    fn foo(&self) {}
+}
+
+fn main() {
+    ().bar();
+}