do ... while is broken in callbacks mode

[bjouhier]

Following test fails because s is "134" instead of "1234" at end of loop:

asyncTest("do while", 1, function(_) {
    var i = 0;
    function read(_) {
        return delay(_, ++i); 
    }
    var s = "";
    var v = read(_);
    do {
        s += v;
    } while ((v = read(_)) < 5);
    strictEqual(s, "1234");
    start();
});

[bjouhier]

I hit this one while testing the CSV transform of the ez-streams module. I'm surprised that nobody ran into it before.

do ... while ... loops must be seldom used!