$OpenBSD: patch-gcc_varasm_c,v 1.1.1.1 2009/06/22 22:37:32 sthen Exp $
--- gcc/varasm.c.orig	Sun Feb 15 04:17:54 2009
+++ gcc/varasm.c	Mon Jun 22 00:54:05 2009
@@ -402,7 +402,7 @@ initialize_cold_section_name (void)
 
       stripped_name = targetm.strip_name_encoding (name);
 
-      buffer = ACONCAT ((stripped_name, "_unlikely", NULL));
+      buffer = ACONCAT ((stripped_name, "_unlikely", (char *)0));
       cfun->unlikely_text_section_name = ggc_strdup (buffer);
     }
   else