1 files changed, 19 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/regress/regress-crbug-640497.js b/deps/v8/test/mjsunit/regress/regress-crbug-640497.js
new file mode 100644
index 0000000000..c637badb66
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+++ b/deps/v8/test/mjsunit/regress/regress-crbug-640497.js
@@ -0,0 +1,19 @@
+// 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 --turbo --turbo-escape
+
+// Warm up {g} with arrays and strings.
+function g(v) { return v.length; }
+assertEquals(1, g("x"));
+assertEquals(2, g("xy"));
+assertEquals(1, g([1]));
+assertEquals(2, g([1,2]));
+
+// Inline into {f}, where we see only an array.
+function f() { assertEquals(0, g([])); }
+f();
+f();
+%OptimizeFunctionOnNextCall(f);
+f();