src/v8/test/mjsunit/regress/regress-507980.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.

__v_1 = new Float64Array(1);
__v_8 = { valueOf: function() { __v_13.y = "bar"; return 42; }};
__v_13 = __v_1;
__v_13[0] = __v_8;