1 files changed, 12 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-18711.rs b/tests/ui/issues/issue-18711.rs
new file mode 100644
index 000000000..435841877
--- /dev/null
+++ b/tests/ui/issues/issue-18711.rs
@@ -0,0 +1,12 @@
+// run-pass
+// Test that we don't panic on a RefCell borrow conflict in certain
+// code paths involving unboxed closures.
+
+// pretty-expanded FIXME #23616
+
+// aux-build:issue-18711.rs
+extern crate issue_18711 as issue;
+
+fn main() {
+    (|| issue::inner(()))();
+}