1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testArgumentsOptimizationFailCornerCase.js b/js/src/jit-test/tests/basic/testArgumentsOptimizationFailCornerCase.js
new file mode 100644
index 0000000000..90f4f11c94
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testArgumentsOptimizationFailCornerCase.js
@@ -0,0 +1,23 @@
+Object.prototype.blah = 42;
+
+function g(a,b,c) {
+    assertEq(a, 1);
+    assertEq(b, 2);
+    assertEq(c, 3);
+    return 43;
+}
+
+function f() {
+    var a = arguments;
+    var b = a;
+    var s = "blah";
+    assertEq(a[s], 42);
+    assertEq(b[s], 42);
+    assertEq(a[s], 42);
+    assertEq(b.length, 3);
+    assertEq(a.length, 3);
+    assertEq(g.apply(null, b), 43);
+}
+
+for (var i = 0; i < 10; ++i)
+    f(1,2,3);