Ruby Issue Tracking System

03/17/2026

10:25 PM Ruby Bug #21856: Massive performance degradation of `rb_obj_free` for `T_CLASS` since Ruby 4.0

👋 I'm the maintainer of Nokogiri and Loofah.
Nokogiri has a "decorator" feature that allows modules to be mixed into node objects dynamically. When a document has decorators registered, Nokogiri calls `node.extend(mod)` on each `Node`... mdalessio (Mike Dalessio)

02/09/2026

08:09 PM Ruby Bug #21873: `UnboundMethod#==` returns false for methods from included/extended modules

A potential fix for this might be:
```diff
diff --git a/proc.c b/proc.c
index f0cdcae7..67963a1b 100644
--- a/proc.c
+++ b/proc.c
@@ -2006,6 +2006,8 @@ method_eq(VALUE method, VALUE other)
klass1 = method_entry_defined_class(m1->m... mdalessio (Mike Dalessio)

08:08 PM Ruby Bug #21873 (Closed): `UnboundMethod#==` returns false for methods from included/extended modules

## Description
`UnboundMethod#==` returns `false` when comparing a module's instance method against the same method obtained via `Method#unbind` on a class that includes or extends that module, despite having the same owner and source... mdalessio (Mike Dalessio)

01/09/2026

03:13 PM Ruby Misc #21804: Getting setup-ruby Earlier

> > > #844 got merged the same day, what would you expect?
> ...
Of course not. I can see that you're feeling attacked here, and that was not my intention, and I apologize. I'm thankful for all the work that you do.
But the fact of... mdalessio (Mike Dalessio)

12/30/2025

03:51 PM Ruby Misc #21804: Getting setup-ruby Earlier

> Maybe it'd make sense and possibly safe enough to automatically merge PRs by ruby-builder-bot, after they pass CI of course ... if someone is interested, please make a PR to setup-ruby.
I've opened https://github.com/ruby/setup-ruby... mdalessio (Mike Dalessio)

03:04 PM Ruby Misc #21804: Getting setup-ruby Earlier

> https://github.com/ruby/setup-ruby/pull/844 got merged the same day, what would you expect?
A counter-example, though, is that the PR for windows support (https://github.com/ruby/setup-ruby/pull/847) took 3 days to get merged.
I thi... mdalessio (Mike Dalessio)

12/19/2025

05:32 PM Ruby Bug #21792: 4.0.0-preview3: Build fails with `--with-ext=` when ENABLE_SHARED=yes: ruby/digest.h not found for rubyspec CAPI extensions

> > I don't think the installation script works with no extensions because it loads rubygems that require monitor
> ...
Ah, I see, is this because logger relies on monitor, and logger is no longer part of the stdlib (it is a bundled gem... mdalessio (Mike Dalessio)

05:16 PM Ruby Bug #21792: 4.0.0-preview3: Build fails with `--with-ext=` when ENABLE_SHARED=yes: ruby/digest.h not found for rubyspec CAPI extensions

> I don't think the installation script works with no extensions because it loads rubygems that require monitor
@nobu Is this something that changed since Ruby 3.4? `rake-compiler` has been using the `--with-ext=` (empty) option since... mdalessio (Mike Dalessio)

12/17/2025

10:34 PM Ruby Bug #21792: 4.0.0-preview3: Build fails with `--with-ext=` when ENABLE_SHARED=yes: ruby/digest.h not found for rubyspec CAPI extensions

I've proposed a potential fix at https://github.com/ruby/ruby/pull/15617 mdalessio (Mike Dalessio)

10:14 PM Ruby Bug #21792: 4.0.0-preview3: Build fails with `--with-ext=` when ENABLE_SHARED=yes: ruby/digest.h not found for rubyspec CAPI extensions

Note that this also reproduces in the source tree for 656de67d / 4.0.0-preview3. mdalessio (Mike Dalessio)