RE: Opinions Wanted: List API loop logic

[Scott Klement <klemscot@xxxxxxxxxxxx>]

Hi Charles,

> Actually, not only did I suggest it.  I tested it before posting it; thus my
> post points out that it doesn't work.
> The compiler doesn't like pointers as FOR loop index variables.

And even if the compiler did let you use a pointer as a loop index, you'd
still have the risk of an MCH0601, because a FOR loop always increments
the index one extra time.

Here's a really trivial example that illustrates this:

     D x               s             10I 0
     c                   for       x = 1 to 10
     c                   endfor
     c                   dsply                   x
     c                   eval      *inlr = *on

What will the value of X be when it does the DSPLY?   It'll be 11.  One
higher than the end of the loop...  When you do that with a pointer, you
run the risk of the MCH0601, which is what Barbara was warning me against.

I suppose I could write my own FOR-like op-code :)