v8/test/mjsunit/regress/regress-1015.js

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// See: http://code.google.com/p/v8/issues/detail?id=1015

// Object and array literals should be created using DefineOwnProperty, and
// therefore not hit setters in the prototype.

function mkFail(message) {
  return function () { assertUnreachable(message); }
}

Object.defineProperty(Object.prototype, "foo",
                      {get: mkFail("oget"), set: mkFail("oset")});
Object.defineProperty(Array.prototype, "2",
                      {get: mkFail("aget"), set: mkFail("aset")});

function inFunction() {
  for (var i = 0; i < 10; i++) {
    // in loop.
    var ja = JSON.parse('[1,2,3,4]');
    var jo = JSON.parse('{"bar": 10, "foo": 20}')
    var jop = JSON.parse('{"bar": 10, "__proto__": { }, "foo": 20}')
    var a = [1,2,3,4];
    var o = { bar: 10, foo: 20 };
    var op = { __proto__: { set bar(v) { assertUnreachable("bset"); } },
               bar: 10 };
  }
}

for (var i = 0; i < 10; i++) {
  // In global scope.
  var ja = JSON.parse('[1,2,3,4]');
  var jo = JSON.parse('{"bar": 10, "foo": 20}')
  var jop = JSON.parse('{"bar": 10, "__proto__": { }, "foo": 20}')
  var a = [1,2,3,4];
  var o = { bar: 10, foo: 20 };
  var op = { __proto__: { set bar(v) { assertUnreachable("bset"); } },
             bar: 10 };
  // In function scope.
  inFunction();
}