On Wednesday 25 June 2025 23:04:58 Martin Storsjö wrote: > On Wed, 25 Jun 2025, Pali Rohár wrote: > > > One proposal from my side: Add support for UCRT compile time macros > > _CRT_STDIO_ISO_WIDE_SPECIFIERS and _CRT_STDIO_LEGACY_WIDE_SPECIFIERS > > by which application can decide if wants C99 behavior or MS behavior. > > It would indeed be nice if we could make this work, somehow. We do have the > mechanism for setting the options for the UCRT stdio functions, since > 3f5c5d854234971909e86d03a8351494db68f615 - but setting it up to react to > these macros is a bit trickier. > > > We can provide two mingw-w64 wide print functions and our stdio.h can > > redirect via __MINGW_ASM_CALL() to correct function based on those > > macros. > > No, I don't think we should do that. > > One core target, at least for me, is that we use the CRT's printfs by > default, at least in UCRT mode. > > On a higher level, I want us to statically link less code into our binaries, > not more.
UCRT printf functions have flags which specify in what kind of mode the function should work. So we can use UCRT printf function with proper flags to work also in C99 mode. Just it is needed to write a small wrapper for it, either as static inline function or as external function. If it is as static inline function, we can use #ifdef based on _CRT_STDIO_ISO_WIDE_SPECIFIERS and _CRT_STDIO_LEGACY_WIDE_SPECIFIERS. If it would be small external function then it can be redirected via __MINGW_ASM_CALL. > So I'd rather have this use the UCRT stdio setting mechanism, somehow (I > don't know offhand how), not make it switch back to the mingw statically > linked printfs. > > // Martin Ok, that is the UCRT part. And how to solve it with msvcrt builds? _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
