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function bar(x) { with ({}) {} switch (x) { case 1: foo(2); break; case 2: gczeal(14, 1); break; } return "a sufficiently long string"; } function foo(x) { for (var s in bar(x)) { gczeal(0); } } with ({}) {} for (var i = 0; i < 100; i++) { foo(0); } foo(1);