X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fxmalloc.c;h=3b5f86cdca11571c5326d9833d3597413e3e4425;hb=86627bb14a123f183bd094e582e4cd9f2aca489a;hp=b1f6993e3d603b2905bc4aed3198e8f817ad4563;hpb=34ebad3df7a99eea326f9170f2517b5d23873d1b;p=gnulib.git

diff --git a/lib/xmalloc.c b/lib/xmalloc.c
index b1f6993e3..3b5f86cdc 100644
--- a/lib/xmalloc.c
+++ b/lib/xmalloc.c
@@ -1,8 +1,6 @@
 /* xmalloc.c -- malloc with out of memory checking
 
-   Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2002, 2003, 2004, 2005, 2006, 2008 Free Software Foundation,
-   Inc.
+   Copyright (C) 1990-2000, 2002-2006, 2008-2012 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
@@ -28,14 +26,10 @@
 #include <stdlib.h>
 #include <string.h>
 
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
-
 /* 1 if calloc is known to be compatible with GNU calloc.  This
    matters if we are not also using the calloc module, which defines
-   HAVE_CALLOC and supports the GNU API even on non-GNU platforms.  */
-#if defined HAVE_CALLOC || defined __GLIBC__
+   HAVE_CALLOC_GNU and supports the GNU API even on non-GNU platforms.  */
+#if defined HAVE_CALLOC_GNU || (defined __GLIBC__ && !defined __UCLIBC__)
 enum { HAVE_GNU_CALLOC = 1 };
 #else
 enum { HAVE_GNU_CALLOC = 0 };
@@ -58,8 +52,16 @@ xmalloc (size_t n)
 void *
 xrealloc (void *p, size_t n)
 {
+  if (!n && p)
+    {
+      /* The GNU and C99 realloc behaviors disagree here.  Act like
+         GNU, even if the underlying realloc is C99.  */
+      free (p);
+      return NULL;
+    }
+
   p = realloc (p, n);
-  if (!p && n != 0)
+  if (!p && n)
     xalloc_die ();
   return p;
 }
@@ -113,24 +115,6 @@ xmemdup (void const *p, size_t s)
   return memcpy (xmalloc (s), p, s);
 }
 
-/* Clone an object P of size S, with error checking, and include a
-   terminating NUL byte.
-
-   The terminating NUL makes it safe to use strlen or rawmemchr to
-   check for embedded NUL; it also speeds up algorithms such as escape
-   sequence processing on arbitrary memory, by making it always safe
-   to read the byte after the escape character rather than having to
-   check if each escape character is the last byte in the object.  */
-
-void *
-xmemdup0 (void const *p, size_t s)
-{
-  char *result = xcharalloc (s + 1);
-  memcpy (result, p, s);
-  result[s] = 0;
-  return result;
-}
-
 /* Clone STRING.  */
 
 char *