Upload Kmake

deps/v8/test/mjsunit/regress/regress-crbug-722783.js

@@ -0,0 +1,21 @@
+// Copyright 2017 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.
+
+function set_x(v) {
+  x = v;
+}
+
+var o = {};
+set_x(o);
+set_x(o);
+assertEquals(o, x);
+Object.defineProperty(this, "x", { value:5, writable:false, configurable:true });
+assertEquals(5, x);
+set_x(o);
+set_x(o);
+assertEquals(5, x);
+Object.defineProperty(this, "x", { value:42, writable:true, configurable:true });
+assertEquals(42, x);
+set_x(o);
+assertEquals(o, x);