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changeset 5462:5ebd8ce9b57f

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(rpl_realloc): Call 'free' if n==0, since realloc might fail. Problem reported by Yoann Vandoorselaere.
author Paul Eggert <eggert@cs.ucla.edu>
date Wed, 17 Nov 2004 22:48:23 +0000
parents b195039b9848
children 8044da4f6750
files lib/realloc.c
diffstat 1 files changed, 11 insertions(+), 4 deletions(-) [+]
line wrap: on
line diff
--- a/lib/realloc.c
+++ b/lib/realloc.c
@@ -1,5 +1,5 @@
-/* Work around bug on some systems where realloc (NULL, 0) fails.
-   Copyright (C) 1997, 2003 Free Software Foundation, Inc.
+/* realloc() function that is glibc compatible.
+   Copyright (C) 1997, 2003, 2004 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
@@ -32,8 +32,15 @@
 rpl_realloc (void *p, size_t n)
 {
   if (n == 0)
-    n = 1;
-  if (p == 0)
+    {
+      n = 1;
+
+      /* In theory realloc might fail, so don't rely on it to free.  */
+      free (p);
+      p = NULL;
+    }
+
+  if (p == NULL)
     return malloc (n);
   return realloc (p, n);
 }