js/src/jit-test/tests/for-of/array-holes-1.js

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1 // for-of does not skip Array holes. The value at a hole is undefined.
2
3 var a = [0, , 2, 3];
4 var log = [];
5 for (var x of a) {
6 assertEq(x, a[log.length]);
7 log.push(x);
8 }
9 assertEq(log[1], undefined);
10 assertEq(log.join(), "0,,2,3");

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