On Fri, Oct 26, 2018 at 11:58 PM Mateusz <mateu...@poczta.onet.pl> wrote: > > W dniu 26.10.2018 o 22:35, Tom Ritter pisze: > > This is not really a MinGW problem, but MinGW does diverge from other > > compilers and it caused Firefox to crash. > > > > MinGW defines a lot of I64[foo] format specifiers in inttypes.h. > > clang and clang-cl don't use I64[foo] they use ll[foo]. (I64[foo] is > > valid according to Microsoft. MinGW mentions "MS runtime does not yet > > understand C9x standard "ll"" but at some point they started > > supporting ll[foo]. And as I mentioned, that's what clang[-cl] uses. > > > > Mozilla has our own implementation of printf that does the format > > specifier parsing. We don't support I64[foo]. So using it caused data > > corruption and general bad behavior. Switching to ll[foo] fixed it. > > > > I have a patch here: > > https://hg.mozilla.org/try/raw-file/eaae7782a1dd/build/build-clang/mingw-int.patch > > You can try to define > __USE_MINGW_ANSI_STDIO > instead of patching mingw-w64
i've mesure a significant performance loss when using printf functions with __USE_MINGW_ANSI_STDIO cmopared to the ones in msvcrt.dll is it normal ? Vincent Torri _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
