{ Copy-paste of https://github.com/mingw-w64/mingw-w64/issues/102 }Hello all! I found two issues when digging in the mingw crt/stdio code, and I wonder if this is something you would like a patch for. First issue : emu__vscwprintf (in mingw-w64-crt/stdio/_vscwprintf.c) _vsnwprintf expects to receive a buffer size in number of wchar_t, but the size being passed is in bytes (hence, the actual buffer is 2x or 4x too small vs what expected : Thanks ASan!) Second issue : mingw_pformat.c does not honor some Microsoft specific format behavior for strings, in relation to Unicode/WideChar. per https://learn.microsoft.com/en-us/cpp/c-runtime-library/format-specification-syntax-printf-and-wprintf-functions?view=msvc-170 For historical reasons, the wprintf functions use c and s to refer to wchar_t characters, and C and S specify narrow characters. In short, %s is the 'native' wideness for the format function, and %S is the opposite. So, for wide function : %s is wide, %S is narrow, and for narrow function : %s is narrow, and %S is wide. (idem for %c %C) The 'w' size prefix is also not supported (same a 'l'). Are those changes you will be interested to receive a PR for? (I would not change the behavior if __BUILD_WIDEAPI_ISO is defined) Regards, and thanks for this amazing project. Julien _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
