[Python-Dev] va_list redefinition warning (original) (raw)

Skip Montanaro skip@pobox.com
Wed, 2 Jul 2003 15:26:59 -0500

SF is completely down at the moment, otherwise I'd file a bug report.

Building 2.3b2 on a Solaris 8 system using gcc 2.95.3 I see many warnings about a redefinition of the va_list macro. Here's one example:

gcc -c  -DNDEBUG -g -O3 -Wall -Wstrict-prototypes -I. -I./Include  -DPy_BUILD_CORE -o Modules/main.o Modules/main.c
In file included from Include/stringobject.h:10,
                 from Include/Python.h:83,
                 from Modules/main.c:3:
/usr/local/lib/gcc-lib/sparc-sun-solaris2.8/2.95.3/include/stdarg.h:170: warning: redefinition of `va_list'
/usr/include/stdio.h:120: warning: `va_list' previously declared here

Is this a problem which the Python installation can solve or do I just need to live with the warnings? The comments in the two header files suggest that stdio.h is the culprit (sort of). In /usr/include/stdio.h I see

/*

In .../stdarg.h I see

/* We deliberately do not define va_list when called from stdio.h, because ANSI C says that stdio.h is not supposed to define va_list. stdio.h needs to have access to that data type, but must not use that name. It should use the name __gnuc_va_list, which is safe because it is reserved for the implementation. */

Skip