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function foo(a,n) { var x = {a:[]}; for (var i = 0; i < n; ) { a[i]; x.a[i]; a[++i]; } } var a = [1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0]; var n = a.length; foo(a,n);