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function test(m) {
do {
if (m = arr[0]) break;
m = 0;
}
while (0);
arr[1] = m;
}
arr = new Float64Array(2);
// run function a lot to trigger methodjit compile
for(var i=0; i<200; i++)
test(0);
// should return 0, not NaN
assertEq(arr[1], 0)