--- gvpe/src/slog.h	2003/03/01 15:53:03	1.1
+++ gvpe/src/slog.h	2005/04/26 00:55:56	1.7
@@ -1,8 +1,10 @@
 /*
     slog.h -- logging
-    Copyright (C) 2003      Marc Lehmannn <pcg@goof.com>
+    Copyright (C) 2003 Marc Lehmann <gvpe@schmorp.de>
  
-    This program is free software; you can redistribute it and/or modify
+    This file is part of GVPE.
+
+    GVPE is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
@@ -13,8 +15,8 @@
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with gvpe; if not, write to the Free Software
+    Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
 #ifndef SLOG_H__
@@ -67,13 +69,16 @@
 
 extern void slog_ (const loglevel l, const char *m, ...);
 
-#ifdef __GNUC__
+#if __GNUC__ > 2
 # define slog(l, ...) do { if ((l) >= log_level) slog_ (l, __VA_ARGS__); } while (0)
 #else
 # define slog slog_
 #endif
 
 extern void fatal (const char *m);
+extern void require_failed (const char *file, int line, const char *info);
+
+#define require(expr) if (!(expr)) require_failed (__FILE__,  __LINE__, #expr)
 
 #endif