1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1629503-1.js b/js/src/jit-test/tests/ion/bug1629503-1.js
new file mode 100644
index 0000000000..06508e7487
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1629503-1.js
@@ -0,0 +1,13 @@
+// |jit-test| error: TypeError: invalid assignment to const
+function f() {
+    const g = newGlobal({newCompartment: true});
+    const dbg = new Debugger(g);
+    g.eval(`function f() {}`);
+    dbg.onEnterFrame = function(frame) {
+        [x, dbg] = [];
+    }
+    for (var i = 0; i < 5; i++) {
+        g.eval("f()");
+    }
+}
+f();