1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1629503-2.js b/js/src/jit-test/tests/ion/bug1629503-2.js
new file mode 100644
index 0000000000..a51e7fced5
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1629503-2.js
@@ -0,0 +1,10 @@
+// |jit-test| error: TypeError: invalid assignment to const
+function f() {
+    const x60 = [0, 1];
+    const y81 = [...x60];
+    {
+        const x60 = [0, 1];
+        [...x60] = [42];
+    }
+}
+f();