New file. From gnulib.

diff --git a/lib/free.c b/lib/free.c
new file mode 100644 (file)
index 0000000..0fc9d8b
--- /dev/null
+++ b/lib/free.c
@@ -0,0 +1,33 @@
+/* Work around incompatibility on older systems where free (NULL) fails.
+
+   Copyright (C) 2003 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* written by Paul Eggert */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+#undef free
+
+#include <stdlib.h>
+
+void
+rpl_free (void *p)
+{
+  if (p)
+    free (p);
+}