Index: c-decl.c
===================================================================
RCS file: /usr/download/ncvs/src/contrib/gcc/c-decl.c,v
retrieving revision 1.1.1.18
diff -u -r1.1.1.18 c-decl.c
--- c-decl.c	21 Jun 2004 23:47:45 -0000	1.1.1.18
+++ c-decl.c	22 Jul 2004 01:55:22 -0000
@@ -19,6 +19,8 @@
 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 02111-1307, USA.  */
 
+/* $FreeBSD: src/contrib/gcc/c-decl.c,v 1.16 2004/06/21 23:54:19 kan Exp $ */
+
 /* Process declarations and symbol lookup for C front end.
    Also constructs types; the standard scalar types at initialization,
    and structure, union, array and enum types when they are declared.  */
@@ -1253,6 +1255,9 @@
 	 definition.  */
       && !(TREE_CODE (newdecl) == FUNCTION_DECL
 	   && DECL_INITIAL (newdecl) && !DECL_INITIAL (olddecl))
+      /* Don't warn about redundant redeclarations of builtins. */
+      && !(TREE_CODE (newdecl) == FUNCTION_DECL
+	   && !DECL_BUILT_IN (newdecl) && DECL_BUILT_IN (olddecl))
       /* Don't warn about an extern followed by a definition.  */
       && !(DECL_EXTERNAL (olddecl) && !DECL_EXTERNAL (newdecl))
       /* Don't warn about forward parameter decls.  */