* c-decl.c (mesg_implicit_function_declaration): Init to -1.

	(implicit_decl_warning): New function.
	(implicitly_declare): Use it.
	* c-typeck.c (build_external_ref): Use implicit_decl_warning
	to complain about implicit decls of builtins.

	* c-lang.c (lang_init): Set mesg_implicit_function_declaration
	based on pedantic && flag_isoc99, if not already set.
	* c-tree.h: Declare mesg_implicit_function_declaration.
	Prototype implicit_decl_warning.

	* gcc.dg/c99-impl-decl-1.c: No longer XFAIL.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@35385 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 3 deletions

diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c
index 17cdedd7279..e6fc2494da6 100644
--- a/gcc/c-typeck.c
+++ b/gcc/c-typeck.c
@@ -1417,9 +1417,10 @@ build_external_ref (id, fun)
 	      /* Implicit declaration of built-in function.  Don't
 		 change the built-in declaration, but don't let this
 		 go by silently, either.  */
-	      pedwarn ("implicit declaration of function `%s'",
-		       IDENTIFIER_POINTER (DECL_NAME (decl)));
-	      C_DECL_ANTICIPATED (decl) = 0;  /* only issue this warning once */
+	      implicit_decl_warning (id);
+
+	      /* only issue this warning once */
+	      C_DECL_ANTICIPATED (decl) = 0;
 	      ref = decl;
 	    }
 	}