Re: Detecting glibc getopt?

Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> How about copying the entire argv[] array to a new location before the
> very first call to getopt(). Then you can use getopt() without hackery
> and can do anything you want to the "real" argv area. That should be a
> lot safer. (We don't know yet what other platforms might play
> optimization tricks in getopt().)

Well, mumble --- strictly speaking, there is *NO* way to use getopt
over multiple cycles "without hackery". The standard for getopt
(http://www.opengroup.org/onlinepubs/7908799/xsh/getopt.html)
doesn't say you're allowed to scribble on optind in the first place.
But you're probably right that having a read-only copy of the argv
vector will make things safer. Will do it that way.

regards, tom lane