v8/test/mjsunit/regress/regress-crbug-491943.js

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// 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.
// Flags: --expose-debug-as debug
var Debug = debug.Debug;
var receiver = null;
Debug.setListener(function(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
receiver = exec_state.frame(0).evaluate('this').value();
});
function f() {
var context_local = 1;
(function() { return context_local; })();
debugger;
}
var expected = {};
f.call(expected);
assertEquals(expected, receiver);