Issue #9015 has been updated by mame (Yusuke Endoh). Thank you, but I think you forgot to attach your patch. -- Yusuke Endoh <mame / tsg.ne.jp> ---------------------------------------- Backport #9015: r42282 (parse.y: fix build error with bison-3.0) https://bugs.ruby-lang.org/issues/9015#change-42432 Author: felipec (Felipe Contreras) Status: Open Priority: Normal Assignee: Category: Target version: Without this patch the compilation of Ruby 1.9 fails with Bison 3.0. -- http://bugs.ruby-lang.org/