[GIT-PULLS] [php-src] PR #23322: Keep compiled RuleBasedBreakIterator rules alive for the iterator

[email protected] (iliaal)
Newsgroups php.git-pulls
Message-ID <[email protected]> 
Pull Request: https://github.com/php/php-src/pull/23322
Author: iliaal

ICU's compiled-rules constructor aliases the caller buffer. PHP passed a temporary string and did not keep it, so setText/next after that string is released can use freed memory. The object now holds a zend_string copy, released in free_obj and addref'd on clone.
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