*** ./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	2019-03-27 00:59:18 +0000
+++ ./utf8.c	2019-03-27 01:01:02 +0000
@@ -599,6 +599,10 @@
 	);
 }
 
+#ifndef SIZE_MAX
+# define SIZE_MAX ((size_t) -1)
+#endif
+
 /*
  * Returns first character length in bytes for multi-byte `text` according to
  * `encoding`.