js/src/jit-test/tests/basic/bug631305.js


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var n = 0;
var a = [];
for (var i = 0; i < 20; i++)
    a[i] = {};
a[18].watch("p", function () { n++; });
delete a[18].p;
for (var i = 0; i < 20; i++)
    a[i].p = 0;
assertEq(n, 1);