On 6/11/2013 15:55, Koehne Kai wrote: > > >> -----Original Message----- >> From: Jim Michaels [mailto:jmich...@yahoo.com] >> Sent: Tuesday, June 11, 2013 9:23 AM >> To: mingw-w64-public@lists.sourceforge.net >> Subject: Re: [Mingw-w64-public] PRIu64 and uint64_t >> >> >> why would I want to use __mingw_printf? what exactly is it? why shouldn't I >> just use printf like I think I should (end-user's prospective)? normally I >> would >> see that and assume it's some sort of internal compiler-use thing and avoid >> it >> and just stick with the the standard c library or c++ library stuff. > > http://sourceforge.net/apps/trac/mingw-w64/wiki/gnu%20printf >
libstdc++ (GCC C++ implementation) REQUIRES C99, especially to support
C++11, so these are staying whether used by the user or not.
The proper macro selection is done automatically, and in my case,
correctly depending on which feature set is requested. Example:
#include <inttypes.h>
#include <stdio.h>
int main(){
printf("%" PRId64 "\n", __INT64_MAX__);
printf("9223372036854775807LL\n");
return 0;
}
Notice PRId64 is replaced with C99 equivalents:
$ x86_64-w64-mingw32-gcc printf64.c -posix -E |tail
...
int main(){
printf("%" "lld" "\n", 9223372036854775807LL);
printf("9223372036854775807LL\n");
return 0;
}
Notice the default is still the MS %I64d for compatibility:
$ x86_64-w64-mingw32-gcc printf64.c -E |tail
...
int main(){
printf("%" "I64d" "\n", 9223372036854775807LL);
printf("9223372036854775807LL\n");
return 0;
}
>>
>> this is news to me, and I have been working with mingw-w64 for a few years
>> now - lost count. new feature?
>
> I think that's an old problem.
Old news, more than a few years old by now.
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