Hi Mike, the issue is that formatter-width specifier %ll isn't supported for all msvcrt-DLL versions, therefore gcc warns about its use. The variant for specifying 64-bit integer-scalar-width in formatter for msvcrt in a backward-compatible way is by using %I64.
Regards, Kai 2012/4/11 Mike Hommey <[email protected]>: > Hi, > > I recently downloaded mingw-w64-gcc-4.6.3-runtime-2.0.1-static-ada-20120321.7z > and when compiling some things with it, I end up with unexpected warnings for > format strings. The problem can be reproduced with the following: > > ---->8----- > #include <stdio.h> > int main() { > size_t a = 1; > printf("%llu %llu\n", a, sizeof(a)); > return 0; > } > -----8<---- > > $ x86_64-w64-mingw32-gcc -o test test.c -Wall > test.c: In function 'main': > test.c:4:1: warning: unknown conversion type character 'l' in format > [-Wformat] > test.c:4:1: warning: unknown conversion type character 'l' in format > [-Wformat] > test.c:4:1: warning: too many arguments for format [-Wformat-extra-args] > > > The resulting binary however works just fine. > > Sure, I could use %Iu, but it's less portable: with %llu, I only have to care > about 32 vs 64 bits size_t... > > Mike > > ------------------------------------------------------------------------------ > For Developers, A Lot Can Happen In A Second. > Boundary is the first to Know...and Tell You. > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > http://p.sf.net/sfu/Boundary-d2dvs2 > _______________________________________________ > Mingw-w64-public mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/mingw-w64-public -- | (\_/) This is Bunny. Copy and paste | (='.'=) Bunny into your signature to help | (")_(") him gain world domination ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Mingw-w64-public mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
