* emacs.c (DEFINE_DUMMY_FUNCTION): New macro.

(__do_global_ctors, __do_global_ctors_aux, __do_global_dtors, __main):
Use it.

src/ChangeLog

 2011-03-14  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* emacs.c (init_cmdargs): Rename local to avoid shadowing.
+	(DEFINE_DUMMY_FUNCTION): New macro.
+	(__do_global_ctors, __do_global_ctors_aux, __do_global_dtors, __main):
+	Use it.
 
 	* lisp.h (fatal_error_signal): Add decl, since it's exported.
 

src/emacs.c

@@ -547,21 +547,22 @@ static char dump_tz[] = "UtC0";
    Provide dummy definitions to avoid error.
    (We don't have any real constructors or destructors.)  */
 #ifdef __GNUC__
+
+/* Define a dummy function F.  Declare F too, to pacify gcc
+   -Wmissing-prototypes.  */
+#define DEFINE_DUMMY_FUNCTION(f) void f (void); void f (void) {}
+
 #ifndef GCC_CTORS_IN_LIBC
-void __do_global_ctors (void)
-{}
-void __do_global_ctors_aux (void)
-{}
-void __do_global_dtors (void)
-{}
+DEFINE_DUMMY_FUNCTION (__do_global_ctors)
+DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux)
+DEFINE_DUMMY_FUNCTION (__do_global_dtors)
 /* GNU/Linux has a bug in its library; avoid an error.  */
 #ifndef GNU_LINUX
 char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
 #endif
 char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
 #endif /* GCC_CTORS_IN_LIBC */
-void __main (void)
-{}
+DEFINE_DUMMY_FUNCTION (__main)
 #endif /* __GNUC__ */
 #endif /* ORDINARY_LINK */