GNU findutils package version 4.1FINDUTILS-4_1FINDUTILS

1 files changed, 95 insertions, 0 deletions

diff --git a/lib/xmalloc.c b/lib/xmalloc.c
new file mode 100644
index 00000000..9f701111
--- /dev/null
+++ b/lib/xmalloc.c
@@ -0,0 +1,95 @@
+/* xmalloc.c -- malloc with out of memory checking
+   Copyright (C) 1990, 91, 92, 93, 94 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#if __STDC__
+#define VOID void
+#else
+#define VOID char
+#endif
+
+#include <sys/types.h>
+
+#if STDC_HEADERS
+#include <stdlib.h>
+#else
+VOID *malloc ();
+VOID *realloc ();
+void free ();
+#endif
+
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif
+
+/* Exit value when the requested amount of memory is not available.
+   The caller may set it to some other value.  */
+int xmalloc_exit_failure = EXIT_FAILURE;
+
+#if __STDC__ && (HAVE_VPRINTF || HAVE_DOPRNT)
+void error (int, int, const char *, ...);
+#else
+void error ();
+#endif
+
+static VOID *
+fixup_null_alloc (n)
+     size_t n;
+{
+  VOID *p;
+
+  p = 0;
+  if (n == 0)
+    p = malloc ((size_t) 1);
+  if (p == 0)
+    error (xmalloc_exit_failure, 0, "memory exhausted");
+  return p;
+}
+
+/* Allocate N bytes of memory dynamically, with error checking.  */
+
+VOID *
+xmalloc (n)
+     size_t n;
+{
+  VOID *p;
+
+  p = malloc (n);
+  if (p == 0)
+    p = fixup_null_alloc (n);
+  return p;
+}
+
+/* Change the size of an allocated block of memory P to N bytes,
+   with error checking.
+   If P is NULL, run xmalloc.  */
+
+VOID *
+xrealloc (p, n)
+     VOID *p;
+     size_t n;
+{
+  if (p == 0)
+    return xmalloc (n);
+  p = realloc (p, n);
+  if (p == 0)
+    p = fixup_null_alloc (n);
+  return p;
+}