Ruby Issue Tracking System

11/14/2026

04:45 PM Ruby Bug #22551 (Open): YJIT: String#<< clears the receiver's coderange

With YJIT, `str << other` leaves `str` with an unknown coderange when both strings have the same encoding. The interpreter keeps the coderange. Any later operation that needs it (`length`, `[]`, `valid_encoding?`) then rescans the whole ... rdil (Reece Dunham)

02:42 AM Ruby Bug #22548: Segfault after calling String#rindex repeatedly

jhawthorn (John Hawthorn) wrote in #note-1:
> Looks like in master this is fixed by https://github.com/ruby/ruby/pull/18658
Just tested and that seems right! Would it be possible to get a backport for that fix to the supported releas... rdil (Reece Dunham)

11/13/2026

11:17 PM Ruby Bug #22548 (Closed): Segfault after calling String#rindex repeatedly

Not sure what's going on, but this seems to be crashing our production application's Ruby instances in certain cases. I've managed to cut it down to just this minimum reproduction:
```
k = []; 3000.times { s = 'a' * 55; k << s; s.rin... rdil (Reece Dunham)