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--- /dev/null
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@@ -0,0 +1,67 @@
+// unwind-prot.h                                              -*- C++ -*-
+/*
+
+Copyright (C) 1992, 1993 John W. Eaton
+
+This file is part of Octave.
+
+Octave 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.
+
+Octave 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 Octave; see the file COPYING.  If not, write to the Free
+Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#if !defined (_unwind_prot_h)
+#define _unwind_prot_h 1
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+#include <stddef.h>
+
+typedef void (*cleanup_func)(void *ptr);
+
+void add_unwind_protect (cleanup_func fptr, void *ptr);
+void run_unwind_protect (void);
+void discard_unwind_protect (void);
+void begin_unwind_frame (char *tag);
+void run_unwind_frame (char *tag);
+void discard_unwind_frame (char *tag);
+void run_all_unwind_protects (void);
+void discard_all_unwind_protects (void);
+
+void matrix_cleanup (void *m);
+void complex_matrix_cleanup (void *cm);
+
+void unwind_protect_int_internal (int *ptr, int value);
+void unwind_protect_ptr_internal (void **ptr, void *value);
+void unwind_protect_var_internal (void *ptr, void *value, size_t size);
+
+#define unwind_protect_int(i) \
+  unwind_protect_int_internal (&(i), (i))
+
+#define unwind_protect_ptr(p) \
+  unwind_protect_ptr_internal ((void **) &(p), (void *) (p))
+
+#define unwind_protect_var(i) \
+  unwind_protect_var_internal ((void *) &(i), (void *) &(i), sizeof (int))
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/