Roger Pack <rogerdpack2 / gmail.com> wrote:
> Hello.  I noticed with 2.1.0 RBIGNUM_DIGITS is present in ruby.h file.
> However, with 2.2.0 it no longer appears to be.  Could someone please
> confirm this is expected, and/or suggest a workaround?

Yes, it's expected, see: https://bugs.ruby-lang.org/issues/6083

(Found via pickaxe: git log -SRBIGNUM_DIGITS include)