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Dietlibc already has the fopen_unlocked functions.

  - Rene Rebe <rene@exactcode.de>

--- ./libiberty/regex.c~	Fri Nov 16 22:54:17 2001
+++ ./libiberty/regex.c	Sun Dec 29 05:39:31 2002
@@ -302,7 +302,7 @@
 
 /* Integer type for pointers.  */
 # if !defined _LIBC && !defined HAVE_UINTPTR_T
-typedef unsigned long int uintptr_t;
+/*typedef unsigned long int uintptr_t;*/
 # endif
 
 /* Should we use malloc or alloca?  If REGEX_MALLOC is not defined, we
--- gcc-4.0.2/libiberty/fopen_unlocked.c.vanilla	2005-10-11 19:52:08.000000000 +0200
+++ gcc-4.0.2/libiberty/fopen_unlocked.c	2005-10-11 19:52:44.000000000 +0200
@@ -104,6 +104,8 @@
   unlock_1 (stderr);
 }
 
+#ifndef __dietlibc__
+
 FILE *
 fopen_unlocked (path, mode)
      const char *path;
@@ -134,3 +136,5 @@
   unlock_1 (fp);
   return fp;
 }
+
+#endif