document inconsistant?

[Joe Buck]

> Thanks for your suggestion, but as I said, one question is that I notice my
> problem is not that *random*, but related to what options I give to the
> compiler.

Perhaps my use of the word "random" confused you: the behavior will be
fixed for any given compiler setting.

You need to debug your program.  If you're stuck, you'll need to send in
the exact source so others can debug it.