The code in the attached test used to work correctly in PHP 8.0, but not
in 8.1+. This is because PHP 8.1+ uses a more modern version of pcre2
than PHP 8.0, and that pcre2 versions has a regression.
While upgrading pcre2lib seems to be only done for the master branch, it
is possible to backport upstream fixes to stable branches. This has been
already done in the past in for JIT regressions [1], so it is not
unprecedented.
We backport the upstream pcre2 fix [2].
[1] 788a701e22
[2] https://github.com/PCRE2Project/pcre2/pull/135
Closes GH-12108.
We backport the respective upstream fix[1] to our bundled pcre2lib plus
the follow-up fix[2] for a functional regression.
[1] <dc5f966635>
[2] <e7af7efaa1>
Closes GH-7573.
Excerpt from the release news:
Version 10.37 26-May-2021
-------------------------
A few more bug fixes and tidies. The only change of real note is the removal of
the actual POSIX names regcomp etc. from the POSIX wrapper library because
these have caused issues for some applications (see 10.33 #2 below).
Version 10.36 04-December-2020
------------------------------
Again, mainly bug fixes and tidies. The only enhancements are the addition of
GNU grep's -m (aka --max-count) option to pcre2grep, and also unifying the
handling of substitution strings for both -O and callouts in pcre2grep, with
the addition of $x{...} and $o{...} to allow for characters whose code points
are greater than 255 in Unicode mode.
NOTE: there is an outstanding issue with JIT support for MacOS on arm64
hardware. For details, please see Bugzilla issue #2618.
Signed-off-by: Anatol Belski <ab@php.net>
