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On May 9 12:15, zosrothko wrote: > >On 09/05/14 11:01, zosrothko wrote: > >>Corinna > >>Le 09/05/2014 10:43, Corinna Vinschen a Ãcrit : > >>>Is defining them with only > >>> > >>> #if !defined(__STRICT_ANSI__) > >>> > >>>sufficient? > >>That won't work because of this > >> > >>$ g++ -xc++ -std=c++11 -dM -E - < /dev/null | sort | grep ANSI > >>#define __STRICT_ANSI__ 1 > >> > >>$ g++ -xc++ -std=gnu++11 -dM -E - < /dev/null | sort | grep ANSI > >> > >>$ > >> > >> > >>g++ with -std=gnu++11 does not define __STRICT_ANSI__ while g++ -std=c++11 does and those previous printfs functions and only those should be defined for c++11. The other traditional stdio functions should be defined only for g++11 and for traditional C. > >> > >>People that does not care about compliance will use the gnu++11 version while those that cares about compliance must use the c++11 version and so should be aligned the printfs series from stdio.h > >> > >> > >>Here at http://www.cplusplus.com/reference/clibrary/ is described which functions borrowed from C are included in the new c++11 standard. I worked for now only on the stdio.h functions but all includes should be checked against the strict compliance for c++11. > >>zos > >> > >> > >GNU++11 is C++11 with extensions. I don't see a problem with having the > >i functions in that case. > There is no problem for having the i functions for gnu++11... but not for > c++11 > > Just to emphase on the compliance for c++11: snprintf is part of the c++11 > standard while fprintf, fscanf, printf, scanf, sprintf are not.. fprintf, fscanf, etc. are defined in C++11. The declaration block we're talking about defines only standard functions which are in C++11, or functions which are newlib-only 'i' variations of the printf/scanf families. Corinna -- Corinna Vinschen Cygwin Maintainer Red Hat
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