diff -urNbB mysql-5.0.13-rc.org/sql/mysqld.cc mysql-5.0.13-rc/sql/mysqld.cc
--- mysql-5.0.13-rc.org/sql/mysqld.cc	2005-09-22 21:39:56.000000000 +0200
+++ mysql-5.0.13-rc/sql/mysqld.cc	2005-09-29 19:29:59.991454000 +0200
@@ -3183,7 +3183,7 @@
   init_ssl();
 
 #ifdef HAVE_LIBWRAP
-  libwrapName= my_progname+dirname_length(my_progname);
+  libwrapName= (char *)my_progname+dirname_length(my_progname);
   openlog(libwrapName, LOG_PID, LOG_AUTH);
 #endif