On Fri, Sep 14, 2012 at 1:32 AM, Daniel Gackle <
danielgackle@gmail.com> wrote:
> I just ran into a strange bug where the gensym'd suffixes on loop
> control variables change to the wrong thing. The bug appears to be
> triggered by a (RETURN) form inside a loop that has more than one
> FOR clause. For each extra clause, the suffixes increase by one.
> I haven't tried to track down the cause of the bug, but I did just push
> a failing test (LOOP-PARALLEL-CLAUSES-WITH-RETURN) to
> illustrate it.
>
> (defun-js foo ()
> (loop :for i :from 0 :below 10 :for x = (* i 10)
> :when (> i 5) :do (return x)
> :collect i))
>
> => (note added comments below):
>
> function foo() {
> return (function () {
> var collect3170 = [];
> var loopResultVarSet3171 = null;
> var loopResultVar3172 = null;
> for (var i = 0; i < 10; i += 1) {
> var x3171 = i * 10;
> if (i > 5) {
> loopResultVarSet3172 = true; // <---- suffix should be
> 3171, not 3172
> loopResultVar3173 = x3171; // <---- suffix should be
> 3172, not 3173
> break;
> };
> collect3170.push(i);
> };
> if (loopResultVarSet3171) {
> return loopResultVar3172;
> };
> return collect3170;
> })();
> };
>
> Daniel
>
>