[ruby-core:125998] [Ruby Bug#22127] parse.y regexp crash on invalid encoding

9 Jul 2026


      Issue #22127 has been updated by k0kubun (Takashi Kokubun).

Backport changed from 3.3: DONTNEED, 3.4: DONTNEED, 4.0: REQUIRED to 3.3: DONTNEED, 3.4: DONTNEED, 4.0: DONE

ruby_4_0 commit:d6e6d3e9a7596406a98197668ad61ec6bfe33e57 merged revision(s) commit:66ec908b84a998d67e6134b59062130824f71d85, commit:d6e6d3e9a7596406a98197668ad61ec6bfe33e57.

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Bug #22127: parse.y regexp crash on invalid encoding
https://bugs.ruby-lang.org/issues/22127#change-117976

* Author: kddnewton (Kevin Newton)
* Status: Closed
* Backport: 3.3: DONTNEED, 3.4: DONTNEED, 4.0: DONE
----------------------------------------
```
./ruby --parser=parse.y -e '/#{"\xcd"}/'
```

results in a segfault


-- 
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