Upload Kmake

deps/v8/test/mjsunit/regress/regress-crbug-881247.js

@@ -0,0 +1,24 @@
+// Copyright 2018 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.
+
+// Flags: --allow-natives-syntax
+
+const resolvedPromise = Promise.resolve();
+
+function spread() {
+  const result = { ...resolvedPromise };
+  %HeapObjectVerify(result);
+  return result;
+}
+
+resolvedPromise[undefined] =  {a:1};
+%HeapObjectVerify(resolvedPromise);
+
+spread();
+
+resolvedPromise[undefined] = undefined;
+%HeapObjectVerify(resolvedPromise);
+
+spread();
+%HeapObjectVerify(resolvedPromise);