1 files changed, 17 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/regress/regress-crbug-642056.js b/deps/v8/test/mjsunit/regress/regress-crbug-642056.js
new file mode 100644
index 0000000000..ca9fc78ef6
--- /dev/null
+++ b/deps/v8/test/mjsunit/regress/regress-crbug-642056.js
@@ -0,0 +1,17 @@
+// 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.
+
+// Flags: --allow-natives-syntax
+
+function f(o) {
+  return o.x instanceof Array;
+}
+
+var o = { x : 1.5 };
+o.x = 0;
+
+f(o);
+f(o);
+%OptimizeFunctionOnNextCall(f);
+f(o);