1 files changed, 10 insertions, 0 deletions
diff --git a/src/test/ui/unboxed-closures/issue-18652.rs b/src/test/ui/unboxed-closures/issue-18652.rs
new file mode 100644
index 000000000..59aa01568
--- /dev/null
+++ b/src/test/ui/unboxed-closures/issue-18652.rs
@@ -0,0 +1,10 @@
+// run-pass
+// Tests multiple free variables being passed by value into an unboxed
+// once closure as an optimization by codegen.  This used to hit an
+// incorrect assert.
+
+fn main() {
+    let x = 2u8;
+    let y = 3u8;
+    assert_eq!((move || x + y)(), 5);
+}