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diff --git a/deps/v8/test/mjsunit/regress/regress-4945.js b/deps/v8/test/mjsunit/regress/regress-4945.js
new file mode 100644
index 0000000000..8e595e6fde
--- /dev/null
+++ b/deps/v8/test/mjsunit/regress/regress-4945.js
@@ -0,0 +1,10 @@
+// Copyright 2016 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* g(o) {
+ yield 'x' in o;
+}
+
+assertTrue(g({x: 1}).next().value);
+assertFalse(g({}).next().value);