v8/test/mjsunit/regress/regress-crbug-523308.js

// Copyright 2015 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.

var error;
try { reference_error(); } catch (e) { error = e; }
toString = error.toString;
error.__proto__ = [];
assertEquals("Error: reference_error is not defined", toString.call(error));