v8/test/mjsunit/regress/regress-4320.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: --allow-natives-syntax --expose-debug-as debug
var Debug = debug.Debug;
function f() { g(); }
function g() { }
f();
f();
%OptimizeFunctionOnNextCall(f);
f();
Debug.setListener(function() {});
Debug.setBreakPoint(g, 0);
f();