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var a, b;
function f(str) {
var n;
var k;
for (var i = 0; i < 18; ++i) {
n = str;
k = n++;
if (k) { }
}
return [k, n];
}
[a, b] = f("10");
assertEq(a, 10);
assertEq(b, 11);
[a, b] = f("5");
assertEq(a, 5);
assertEq(b, 6);