diff --git a/gcc/testsuite/rust/compile/closure_in_closure.rs b/gcc/testsuite/rust/compile/closure_in_closure.rs
new file mode 100644
index 000000000000..1a003070f6a7
--- /dev/null
+++ b/gcc/testsuite/rust/compile/closure_in_closure.rs
@@ -0,0 +1,8 @@
+// { dg-additional-options "-frust-compile-until=ast" }
+//
+// Do not reformat this test! The default rust format settings will insert a
+// space between closure parameter lists.
+fn main() {
+    let f = |_||x, y| x+y;
+    assert_eq!(f(())(1, 2), 3);
+}