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-rw-r--r--readline/xmalloc.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/readline/xmalloc.c b/readline/xmalloc.c
new file mode 100644
index 0000000..4160651
--- /dev/null
+++ b/readline/xmalloc.c
@@ -0,0 +1,87 @@
+/* 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 (HAVE_CONFIG_H)
+#include <config.h>
+#endif
+
+#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;
+
+ temp = (char *)malloc (bytes);
+ if (temp == 0)
+ memory_error_and_abort ("xmalloc");
+ return (temp);
+}
+
+char *
+xrealloc (pointer, bytes)
+ char *pointer;
+ int bytes;
+{
+ char *temp;
+
+ temp = pointer ? (char *)realloc (pointer, bytes) : (char *)malloc (bytes);
+
+ if (temp == 0)
+ 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);
+ exit (2);
+}
+
+/* Use this as the function to call when adding unwind protects so we
+ don't need to know what free() returns. */
+void
+xfree (string)
+ char *string;
+{
+ if (string)
+ free (string);
+}