-/* ----------------------------------------------------------------------------
- * $Id$
- * ----------------------------------------------------------------------------
- * Public Domain C Library - http://pdclib.sourceforge.net
- * This code is Public Domain. Use, modify, and redistribute at will.
- * --------------------------------------------------------------------------*/
-
-void exit( int status ) { /* TODO */ };
+/* $Id$ */
+
+/* Release $Name$ */
+
+/* exit( int )
+
+ This file is part of the Public Domain C Library (PDCLib).
+ Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdlib.h>
+
+#ifndef REGTEST
+
+/* TODO - "except that a function is called after any previously registered
+ functions that had already been called at the time it was registered.
+*/
+
+struct _PDCLIB_exitfunc_t * regstack = NULL;
+
+void exit( int status )
+{
+ struct _PDCLIB_exitfunc_t * next = regstack;
+ while ( next != NULL )
+ {
+ next->func();
+ regstack = next->next;
+ free( next );
+ next = regstack;
+ }
+ _Exit( status );
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main()
+{
+ BEGIN_TESTS;
+ /* Unwinding of regstack tested in atexit(). */
+ return TEST_RESULTS;
+}
+
+#endif