On 05/01/15 23:03, Eric Blake wrote: > Commit cf88e56ab broke the use of PRIdMAX and friends on modern > mingw64 installations. Basically, when requesting > _USE_MINGW_ANSI_STDIO, not only does mingw turn on support for %lld, > it also rewrites <inttypes.h> to provide PRIdMAX as "lld" instead of > "I64d" (but only when <stdio.h> is also included). But if a user is > NOT using the gnulib printf module, gnulib's <stdio.h> was still > giving printf() the system printf attribute, which causes the > compiler to then complain about an unknown %lld specifier, even though > we know we don't need to use the non-standard %I64d. So this patch > adds a configure-time probe that should work with older gcc (which > does not differentiate between printf flavors) and older mingw (where > _USE_MINGW_ANSI_STDIO has no impact on behavior), while fixing the > mismatch in flavors on modern systems. > > * m4/stdio_h.m4 (gl_STDIO_H): Probe for printf flavor via inttypes. > * lib/stdio.in.h (_GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM): Use result > to work with modern mingw.
Very nice. thanks, Pádraig
