1 files changed, 11 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/arrow-functions/const-1.js b/js/src/jit-test/tests/arrow-functions/const-1.js
new file mode 100644
index 000000000..f8e7fce4c
--- /dev/null
+++ b/js/src/jit-test/tests/arrow-functions/const-1.js
@@ -0,0 +1,11 @@
+// Arguments with default parameters can shadow const locals.
+
+"use strict";
+
+function f() {
+    const x = 1;
+    return (x = 0) => x;
+}
+
+var g = f();
+assertEq(g(), 0);