test/mjsunit/regress/regress-crbug-259300.js

// Copyright 2013 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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//       notice, this list of conditions and the following disclaimer.
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// Flags: --expose-debug-as debug

Debug = debug.Debug;
var listened = false;
var recursion_depth = 0;

function listener(event, exec_state, event_data, data) {
  if (event == Debug.DebugEvent.Break) {
    recursion_depth++;
    var disable_break = (recursion_depth > 2);
    for (var i = 0; i < exec_state.frameCount(); i++) {
      exec_state.frame(i).evaluate("debugger", disable_break);
    }
  }
  listened = true;
}

Debug.setListener(listener);
eval("debugger");
Debug.setListener(null);
assertTrue(listened);