1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/js/src/jit-test/tests/for-of/array-holes-1.js Wed Dec 31 06:09:35 2014 +0100 1.3 @@ -0,0 +1,10 @@ 1.4 +// for-of does not skip Array holes. The value at a hole is undefined. 1.5 + 1.6 +var a = [0, , 2, 3]; 1.7 +var log = []; 1.8 +for (var x of a) { 1.9 + assertEq(x, a[log.length]); 1.10 + log.push(x); 1.11 +} 1.12 +assertEq(log[1], undefined); 1.13 +assertEq(log.join(), "0,,2,3");