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).
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.
// Martin _______________________________________________ Mingw-w64-public mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
