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diff --git a/sos-code-article6.5/sos/assert.h b/sos-code-article6.5/sos/assert.h
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+++ b/sos-code-article6.5/sos/assert.h
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+/* Copyright (C) 2004  The KOS Team
+
+   This program 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.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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. 
+*/
+#ifndef _SOS_ASSERT_H_
+#define _SOS_ASSERT_H_
+
+
+void sos_display_fatal_error(const char *format, /* args */...)
+     __attribute__ ((format (printf, 1, 2), noreturn));
+
+
+/**
+ * If the expr is FALSE, print a message and halt the machine
+ */
+#define SOS_ASSERT_FATAL(expr) \
+   ({ \
+     int __res=(int)(expr); \
+     if (! __res) \
+       sos_display_fatal_error("%s@%s:%d Assertion " # expr " failed", \
+			       __PRETTY_FUNCTION__, __FILE__, __LINE__); \
+   })
+
+
+#define SOS_FATAL_ERROR(fmt,args...) \
+   ({ \
+      sos_display_fatal_error("%s@%s:%d FATAL: " fmt, \
+			      __PRETTY_FUNCTION__, __FILE__, __LINE__, \
+                              ##args); \
+   })
+
+#endif /* _SOS_ASSERT_H_ */