*** ./vcs-svn/svndiff.c.ORIG	Sun Apr 15 20:00:26 2012
--- ./vcs-svn/svndiff.c	Sun Apr 15 20:01:44 2012
***************
*** 8,13 ****
--- 8,21 ----
  #include "line_buffer.h"
  #include "svndiff.h"
  
+ #ifdef _AIX51
+ #if (__64BIT__)
+ #define SIZE_MAX        UINT64_MAX
+ #else
+ #define SIZE_MAX        UINT32_MAX
+ #endif
+ #endif
+ 
  /*
   * svndiff0 applier
   *
*** ./utf8.c.ORIG	Thu May 30 00:09:05 2013
--- ./utf8.c	Thu May 30 00:09:17 2013
***************
*** 590,595 ****
--- 590,599 ----
  }
  #endif
  
+ #ifndef SIZE_MAX
+ # define SIZE_MAX ((size_t) -1)
+ #endif
+ 
  /*
   * Returns first character length in bytes for multi-byte `text` according to
   * `encoding`.