On Tue, 17 Jun 2025, 16:16 Eregon (Benoit Daloze) via ruby-core, <ruby-core@ml.ruby-lang.org> wrote:

hanazuki (Kasumi Hanazuki) wrote in #note-20:
> FYI: IO::Buffer is now broken (by a recent change)

Which change do you mean? 6012145299cfa4ab561360c78710c7f2941a7e9d ?

Yes. the commit "Mark rb_io_buffer_type references declaratively"