args-redefine-iterator-1.js

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function t()

  var a = arguments;

  Object.defineProperty(a, Symbol.iterator, { });

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

    assertEq(a[Symbol.iterator], Array.prototype[Symbol.iterator]);

  var desc = Object.getOwnPropertyDescriptor(a, Symbol.iterator);

  assertEq(desc.value, Array.prototype[Symbol.iterator]);

  assertEq(desc.writable, true);

  assertEq(desc.enumerable, false);

  assertEq(desc.configurable, true);

t();