testLengthOnNonNativeProto.js

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function testLengthOnNonNativeProto()

  var o = {};

  o.__proto__ = [3];

  for (var j = 0; j < 5; j++)

    o[0];

  var o2 = {};

  o2.__proto__ = [];

  for (var j = 0; j < 5; j++)

    o2.length;

  function foo() { }

  foo.__proto__ = [];

  for (var j = 0; j < 5; j++)

    foo.length;

  return "no assertion";

assertEq(testLengthOnNonNativeProto(), "no assertion");