https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71851
--- Comment #6 from Daniel Gutson <daniel.gutson at intel dot com> ---
(In reply to Richard Biener from comment #3)
> (In reply to Jakub Jelinek from comment #2)
> > Any kind of such code goes strongly against build reproduceability,
> > -fcompare-debug etc., so not sure it would be really appreciated, it is a
> > direction against various changes done in gcc lately.
> > I think if you need something like that just pass
> > -DRANDOM=`dd if=/dev/random bs=8 count=1 2>/dev/null | md5sum | awk '{print
> > $1}'`
> > or something similar.
>
> I think he wants to have a new random value each time __RANDOM is "evaluated"
> (during C++ template instantiation - thus a preprocessor macro isn't really
> apppropriate).
Actually I don't. As I mention in my last comment, the macro should have the
same value during all compilation. I already wrote a compile-time PRNG (and
another layer that uses it), but please don't get biased by this fact.
