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+/* exit() function.
+ Copyright (C) 1995, 2001 Free Software Foundation, Inc.
+
+ 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef _EXIT_H
+#define _EXIT_H
+
+/* Get exit() declaration. */
+#include <stdlib.h>
+
+/* Some systems do not define EXIT_*, despite otherwise supporting C89. */
+#ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+#endif
+#ifndef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
+
+#endif /* _EXIT_H */