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function testHolePushing() {
var a = ["foobar", "baz"];
for (var i = 0; i < 5; i++)
a = [, "overwritten", "new"];
var s = "[";
for (i = 0; i < a.length; i++) {
s += (i in a) ? a[i] : "<hole>";
if (i != a.length - 1)
s += ",";
}
return s + "], " + (0 in a);
}
assertEq(testHolePushing(), "[<hole>,overwritten,new], false");