While I found this issue using my very old compiler, it seems reasonable since that is where ULONG_MAX has been defined for a long time. (Since clearly no one else is running into this).
[[[ For those of us with somewhat deficient compilers that don't provide ULONG_MAX unless <limits.h> is explicitly included. * subversion/include/svn_types.h (includes): Add include of limits.h ]]] Index: subversion/include/svn_types.h =================================================================== --- subversion/include/svn_types.h (revision 1460195) +++ subversion/include/svn_types.h (working copy) @@ -29,6 +29,7 @@ /* ### this should go away, but it causes too much breakage right now */ #include <stdlib.h> +#include <limits.h> /* for ULONG_MAX */ #include <apr.h> /* for apr_size_t, apr_int64_t, ... */ #include <apr_errno.h> /* for apr_status_t */