Variadic macro warning

[Roberto Fichera <robyf@xxxxxxxxxxxxx>]

Hi All,

I'm trying to remove, in a clean way, the warning reported below.
I've tried by adding -std=c99 but I think that's is a non standard
way to solve it, the -std=c99 macro should be a C switch right ?

So, how can I remove the warning in clean way ?

Please reply directly, I'm not subcribed on the list.

That's the simple program

#include <stdio.h>

#define X(...) __VA_ARGS__


int main (int argc, char *argv)
{
  int x = X(0);

  printf( "x=%d\n", x );
}

compiled with

[robyf@robyf tmp]# g++ -Wall -pedantic -v -o p p.cc

Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2.2/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--disable-checking --with-system-zlib --enable-__cxa_atexit
--host=i386-redhat-linux
Thread model: posix
gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)
 /usr/lib/gcc-lib/i386-redhat-linux/3.2.2/cc1plus -v -D__GNUC__=3
-D__GNUC_MINOR__=2 -D__GNUC_PATCHLEVEL__=2 -D__GXX_ABI_VERSION=102 -D__ELF__
-Dunix -D__gnu_linux__ -Dlinux -D__ELF__ -D__unix__ -D__gnu_linux__
-D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__
-D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386
-D__i386__ -D__tune_i386__ p.cc -D__GNUG__=3 -D__DEPRECATED -D__EXCEPTIONS
-quiet -dumpbase p.cc -Wall -pedantic -version -o /tmp/ccqnMcfQ.s
GNU CPP version 3.2.2 20030222 (Red Hat Linux 3.2.2-5) (cpplib) (i386
Linux/ELF)
GNU C++ version 3.2.2 20030222 (Red Hat Linux 3.2.2-5) (i386-redhat-linux)
        compiled by GNU C version 3.2.2 20030222 (Red Hat Linux 3.2.2-5).
ignoring nonexistent directory "/usr/i386-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/3.2.2
 /usr/include/c++/3.2.2/i386-redhat-linux
 /usr/include/c++/3.2.2/backward
 /usr/local/include
 /usr/lib/gcc-lib/i386-redhat-linux/3.2.2/include
 /usr/include
End of search list.
---------->>>>>>>>> p.cc:3:15: warning: anonymous variadic macros were 
introduced in C99
 as -V -Qy -o /tmp/cc4AousF.o /tmp/ccqnMcfQ.s
GNU assembler version 2.13.90.0.18 (i386-redhat-linux) using BFD version
2.13.90.0.18 20030206
 /usr/lib/gcc-lib/i386-redhat-linux/3.2.2/collect2 --eh-frame-hdr -m
elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o p
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../../crt1.o
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../../crti.o
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/crtbegin.o
-L/usr/lib/gcc-lib/i386-redhat-linux/3.2.2
-L/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../.. /tmp/cc4AousF.o -lstdc++
-lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/crtend.o
/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../../crtn.o
[robyf@robyf tmp]#

Thanks in advance,

Roberto Fichera.