[php-maint] preg_match: Segmentation fault

[Florian Weimer]

* sean finney:

>> the following code causes a segmentation fault with the latest stable php5:
>> preg_match("/(?:a|bb)*/", str_repeat("a", 5000));
>
> i believe this is a known limitation in php, any version.  try looking
> through bugs.php.net and you'll probably find similar reports.

Is preg_match implemented using PCRE?  There's a compile-time option in
PCRE that would avoid the stack overflow.

AFAICT, this is bug #400121.