1 files changed, 78 insertions, 0 deletions
diff --git a/xmalloc.c b/xmalloc.c
new file mode 100644
index 0000000..4f6dc76
--- /dev/null
+++ b/xmalloc.c
@@ -0,0 +1,78 @@
+/* xmalloc.c -- safe versions of malloc and realloc */
+
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+
+   This file is part of GNU Readline, a library for reading lines
+   of text with interactive input and history editing.
+
+   Readline 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 1, or (at your option) any
+   later version.
+
+   Readline 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 Readline; see the file COPYING.  If not, write to the Free
+   Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if defined (ALREADY_HAVE_XMALLOC)
+#else
+#include <stdio.h>
+
+#if defined (HAVE_STDLIB_H)
+#  include <stdlib.h>
+#else
+#  include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+static void memory_error_and_abort ();
+
+/* **************************************************************** */
+/*								    */
+/*		   Memory Allocation and Deallocation.		    */
+/*								    */
+/* **************************************************************** */
+
+/* Return a pointer to free()able block of memory large enough
+   to hold BYTES number of bytes.  If the memory cannot be allocated,
+   print an error message and abort. */
+char *
+xmalloc (bytes)
+     int bytes;
+{
+  char *temp = (char *)malloc (bytes);
+
+  if (!temp)
+    memory_error_and_abort ("xmalloc");
+  return (temp);
+}
+
+char *
+xrealloc (pointer, bytes)
+     char *pointer;
+     int bytes;
+{
+  char *temp;
+
+  if (!pointer)
+    temp = (char *)malloc (bytes);
+  else
+    temp = (char *)realloc (pointer, bytes);
+
+  if (!temp)
+    memory_error_and_abort ("xrealloc");
+  return (temp);
+}
+
+static void
+memory_error_and_abort (fname)
+     char *fname;
+{
+  fprintf (stderr, "%s: Out of virtual memory!\n", fname);
+  abort ();
+}
+#endif /* !ALREADY_HAVE_XMALLOC */