1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/for-of/semantics-02.js b/js/src/jit-test/tests/for-of/semantics-02.js
new file mode 100644
index 0000000000..27b1323298
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/semantics-02.js
@@ -0,0 +1,12 @@
+// Replacing Array.prototype.iterator with something non-callable makes for-of throw.
+
+load(libdir + "asserts.js");
+load(libdir + "iteration.js");
+
+function test(v) {
+    Array.prototype[Symbol.iterator] = v;
+    assertThrowsInstanceOf(function () { for (var x of []) ; }, TypeError);
+}
+test(undefined);
+test(null);
+test({});