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var before = ''; var after = ''; function g(b) { for (var i = 0; i < 10; ++i) { } } function f(xa_arg) { var xa = xa_arg; for (var i = 0; i < 5; ++i) { var j = i + xa[i]; before += j + ','; g(); after += j + ','; } } f([ 0, 1, 2, 3, 4 ]); assertEq(before, after);