Ruby Issue Tracking System

06/29/2026

10:11 AM Ruby Revision 07836e0b (git): Avoid reading TypedData type after dfree

[Bug #22101] (Backport) rwstauner (Randy Stauner)

06/26/2026

09:26 PM Ruby Bug #21996: Crash when modifying instance variables during inspect or Marshal dump

ruby_4_0 commit:6fd2ae629a40353a3f377718544e1a3ee7a1ab65 merged revision(s) commit:f2d0ef269b47af7d0e658016903bd8917c32899a. rwstauner (Randy Stauner)

09:18 PM Ruby Bug #21882: IO::Buffer#locked leaves the buffer locked when the block raises

Backport PR for ruby_4_0 (4.0) opened: https://github.com/ruby/ruby/pull/17513 rwstauner (Randy Stauner)

09:16 PM Ruby Bug #22124: void value missed in parse.y

Backport PR for ruby_4_0 (4.0) opened: https://github.com/ruby/ruby/pull/17512 rwstauner (Randy Stauner)

08:41 PM Ruby Bug #22126: Stack underflow for partial DCE and loops

Backport PR for ruby_4_0 (4.0) opened: https://github.com/ruby/ruby/pull/17511 rwstauner (Randy Stauner)

08:18 PM Ruby Bug #22127: parse.y regexp crash on invalid encoding

Backport PR for 4.0 opened: https://github.com/ruby/ruby/pull/17510 rwstauner (Randy Stauner)

08:06 PM Ruby Bug #22120: Segfault caused by ar_find_entry_hint() not checking for conversion to st_table

ruby_4_0 commit:37ab334cd72e027d03e7d9e71eea766ac4d1f174 merged revision(s) commit:c88430e1878f. rwstauner (Randy Stauner)

06/25/2026

06:33 PM Ruby Bug #22129: error_highlight raises NotImplementedError for ArgumentErrors that get wrapped

Backport PR for 4.0: https://github.com/ruby/ruby/pull/17480 rwstauner (Randy Stauner)

06/24/2026

08:04 PM Ruby Bug #22129 (Closed): error_highlight raises NotImplementedError for ArgumentErrors that get wrapped

With code like
```ruby
def x(y:) = y
begin
x
rescue => e
p e.exception("wat").detailed_message
end
```
a NotImplementedError is raised on ruby 4.0+
```
/Users/rwstauner/.rubies/4.0.2/lib/ruby/4.0.0/error_highlight/... rwstauner (Randy Stauner)

06/22/2026

04:57 PM Ruby Revision 5c33033b (git): ZJIT: Register builtin CMEs before prelude to avoid prepend crash

Split rb_zjit_init into rb_zjit_init_builtin_cmes (called before
ruby_init_prelude) and rb_zjit_init (called after). The prelude may
load bundler via BUNDLER_SETUP which can call Kernel.prepend, moving
core methods to an origin iclass. R... rwstauner (Randy Stauner)