1 files changed, 11 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/arguments/bug633020.js b/js/src/jit-test/tests/arguments/bug633020.js
new file mode 100644
index 0000000000..6e30bd1250
--- /dev/null
+++ b/js/src/jit-test/tests/arguments/bug633020.js
@@ -0,0 +1,11 @@
+var N = 10;
+function f(b) {
+    var a = [];
+    for (var i = 0; i < N; i++)
+        a[i] = {};
+    a[N-1] = arguments;
+    for (var i = 0; i < N; i++)
+        a[i][0] = i;
+    assertEq(b, N - 1);
+}
+f(null);