[es6] Make sure we do not invoke setter when calling Promise.all

test/mjsunit/es6/promise-internal-setter.js

Index: test/mjsunit/es6/promise-internal-setter.js
diff --git a/test/mjsunit/es6/promise-internal-setter.js b/test/mjsunit/es6/promise-internal-setter.js
new file mode 100644
index 0000000000000000000000000000000000000000..83e473831666822521a28ead1a1f1b2337dfb278
--- /dev/null
+++ b/test/mjsunit/es6/promise-internal-setter.js
@@ -0,0 +1,17 @@
+// Copyright 2015 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.
+
+'use strict';
+
+Object.defineProperties(Object.prototype, {
+  promise: {set: assertUnreachable},
+  reject: {set: assertUnreachable},
+  resolve: {set: assertUnreachable},
+});
+
+class P extends Promise {}
+
+P.all([Promise.resolve('ok')]);
+P.race([Promise.resolve('ok')]);
+P.defer();