1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/concat/Array.prototype.concat_array-like-to-length-throws.js b/js/src/tests/test262/built-ins/Array/prototype/concat/Array.prototype.concat_array-like-to-length-throws.js
new file mode 100644
index 0000000000..8aef650339
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/concat/Array.prototype.concat_array-like-to-length-throws.js
@@ -0,0 +1,31 @@
+// Copyright (c) 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.concat
+description: Array.prototype.concat array like to length throws
+features: [Symbol.isConcatSpreadable]
+---*/
+var spreadableWithBrokenLength = {
+  "length": {
+    valueOf: null,
+    toString: null
+  },
+  "1": "A",
+  "3": "B",
+  "5": "C"
+};
+spreadableWithBrokenLength[Symbol.isConcatSpreadable] = true;
+var obj2 = {
+  length: 3,
+  "0": "0",
+  "1": "1",
+  "2": "2"
+};
+var arr = ["X", "Y", "Z"];
+assert.throws(TypeError, function() {
+  Array.prototype.concat.call(spreadableWithBrokenLength, obj2, arr);
+}, 'Array.prototype.concat.call(spreadableWithBrokenLength, obj2, arr) throws a TypeError exception');
+
+reportCompare(0, 0);