On 23.07.2015 at 13:07, Christoph Becker wrote: > PHP7 supports PCRE's JIT compilation of patterns by default, which > mostly works fine. However, there are issues when the matching exceeds > the JIT stack limit, see bug #70110[1]. > > I'm not sure how to solve this best. Basically, I see two possible > solutions: either we fall back to non JIT matching, if pcre_exec() fails > with PCRE_ERROR_JIT_STACKLIMIT, or we use a custom JIT stack and make > its size a configurable ini setting (similar to pcre.backtrack_limit), > and raise E_WARNING if the matching fails due to limited stack size. > > Thoughts? > > [1] <https://bugs.php.net/bug.php?id=70110>
Zoltán Herczeg just told me that the size of the JIT stack doesn't have to be fixed, but rather allows to dynamically grow up to a maximum given size (preallocated by mmap/VirtualAlloc). I'll do some testing and report back later. -- Christoph M. Becker -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
