src/v8/test/debugger/debug/regress/regress-1170187.js

// Copyright 2008 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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// Make sure that the retreival of local variables are performed correctly even
// when an adapter frame is present.

Debug = debug.Debug

let listenerCalled = false;
let exceptionThrown = false;


function checkName(name) {
  const validNames = new Set([ 'a', 'b', 'c', 'x', 'y' ]);
  assertTrue(validNames.has(name));
}


function checkValue(value) {
  assertEquals(void 0, value);
}


function listener(event, exec_state, event_data, data) {
  try {
    if (event == Debug.DebugEvent.Break) {
      var local0Name = exec_state.frame(0).localName(0);
      var local1Name = exec_state.frame(0).localName(1);
      var local2Name = exec_state.frame(0).localName(2);
      checkName(local0Name);
      checkName(local1Name);
      checkName(local2Name);
      var local0Value = exec_state.frame(0).localValue(0).value();
      var local1Value = exec_state.frame(0).localValue(1).value();
      var local2Value = exec_state.frame(0).localValue(2).value();
      checkValue(local0Value);
      checkValue(local1Value);
      checkValue(local2Value);
      listenerCalled = true;
    }
  } catch (e) {
    exceptionThrown = true;
  };
};

// Add the debug event listener.
Debug.setListener(listener);

// Call a function with local variables passing a different number parameters
// that the number of arguments.
(function(x,y){
  var a,b,c;
  // Make sure a, b, and c are used.
  a,b,c;
  debugger;
  return 3
})()

// Make sure that the debug event listener vas invoked (again).
assertTrue(listenerCalled);
assertFalse(exceptionThrown, "exception in listener")