Hi, On Wed, Jan 19, 2022 at 7:41 PM Martin Storsjö <[email protected]> wrote: > > Hi Matthew, > > On Wed, 19 Jan 2022, Matthew Brett wrote: > > > We've run into a problem over at > > https://github.com/rgommers/scipy/issues/118 > > > > The essence of the problem is that the *compiler* warns when we use > > the '%zd' format code to 'printf', even though the UCRT run-time does, > > in fact, support this code. > > I think this is a case of > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95130 (and > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92292). > > I think https://gcc.gnu.org/pipermail/gcc-patches/2022-January/588341.html > contains the most up to date patch to fix this issue (it's plausible it > gets included in GCC 13.x, but if it applies on older versions too, it > should hopefully help there too).
Thank you - that's very helpful. Is there anything us interested parties can do to help? > > The compiler (correctly) *does not* warn for the `%lld` code, > > presumably because of the guards at > > https://github.com/mirror/mingw-w64/blob/master/mingw-w64-headers/crt/inttypes.h#L33 > > . However, there are no such guards for the `%zd` flag, hence the > > spurious warning. > > No, those don't affect anything here; those macros aren't used here. It's > all about how the compiler interprets the format attributes on the printf > function declarations, see the bug references above. Thanks for the correction - you've rightly detected that I was out of my depth trying to diagnose the problem! And the bugs you've pointed to explain it well. Cheers, Matthew _______________________________________________ Mingw-w64-public mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
