G_HAVE_ISO_VARARGS broken for gcc -x c++

[Tim Janik <timj gtk org>]

hey owen,

i don't have the time to investigate exactly why,
but the new ISO macro varargs stuff is broken for c++.

#ifdef G_HAVE_ISO_VARARGS
#define g_error(...)    g_log (G_LOG_DOMAIN,         \
                               G_LOG_LEVEL_ERROR,    \
                               __VA_ARGS__)

if you'd like to check this out, module gnome-arts
in the freedesktop.org CVS, but a test case should be
easy enough to cook up, the error messages were:

In file included from /opt/include/glib-2.0/glib.h:49,
                 from /opt/include/gtk-2.0/gdk/gdktypes.h:32,
                 from /opt/include/gtk-2.0/gdk/gdkcolor.h:4,
                 from /opt/include/gtk-2.0/gdk/gdk.h:30,
                 from /opt/include/gtk-2.0/gtk/gtk.h:31,
                 from gartscontrol.cc:18:
/opt/include/glib-2.0/gmessages.h:103: warning: invalid character in macro parameter name
/opt/include/glib-2.0/gmessages.h:103: badly punctuated parameter list in `#define'
/opt/include/glib-2.0/gmessages.h:106: warning: invalid character in macro parameter name
/opt/include/glib-2.0/gmessages.h:106: badly punctuated parameter list in `#define'
/opt/include/glib-2.0/gmessages.h:109: warning: invalid character in macro parameter name
/opt/include/glib-2.0/gmessages.h:109: badly punctuated parameter list in `#define'
/opt/include/glib-2.0/gmessages.h:112: warning: invalid character in macro parameter name
/opt/include/glib-2.0/gmessages.h:112: badly punctuated parameter list in `#define'
make[2]: *** [gartscontrol.o] Error 1

btw, i'd like to make a new release of glib/gtk+ later
this week (with fixed/c++-diable ISO varargs ;), so
stefan and me can make a new release of gnome-arts
depending on that.

---
ciaoTJ