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diff --git a/Build/source/texk/web2c/mpdir/avlstuff.c b/Build/source/texk/web2c/mpdir/avlstuff.c
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+++ b/Build/source/texk/web2c/mpdir/avlstuff.c
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+/*
+Copyright (c) 2004-2005 Han The Thanh, <thanh@pdftex.org>
+
+This file is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by Free
+Software Foundation; either version 2 of the License, or (at your option)
+any later version.
+
+This file 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 file; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+$Id: avlstuff.c,v 1.12 2005/07/11 20:27:39 hahe Exp hahe $
+
+*/
+
+#include "mplib.h"
+#include <kpathsea/c-vararg.h>
+#include <kpathsea/c-proto.h>
+#include "avl.h"
+
+static const char perforce_id[] =
+ "$Id: avlstuff.c,v 1.12 2005/07/11 20:27:39 hahe Exp hahe $";
+
+/* memory management functions for avl */
+
+void *avl_xmalloc (struct libavl_allocator *allocator, size_t size)
+{
+ assert (allocator != NULL && size > 0);
+ return xmalloc (size);
+}
+
+void avl_xfree (struct libavl_allocator *allocator, void *block)
+{
+ assert (allocator != NULL && block != NULL);
+ xfree (block);
+}
+
+struct libavl_allocator avl_xallocator = {
+ avl_xmalloc,
+ avl_xfree
+};
+
+
+/**********************************************************************/