commit 97afea48fd328304d74fc174c742518175063ab7
author Yann Ylavic <ylavic@apache.org> Fri Jul 15 10:46:37 2022 +0000
committer Yann Ylavic <ylavic@apache.org> Fri Jul 15 10:46:37 2022 +0000
tree ba36314205a3d0e13d12f153dc5786a267c6f15c
parent f589ecaa68cfe3be8694042035efc8343715e25c

util_pcre: Restore nmatch < ncaps behaviour with PCRE1 (only).

When the requested nmatch is below the number of captures for the regex (i.e.
nmatch is zero if the user does not care about the captures), with PCRE1 we can
pass a smaller ovector to pcre_exec() (or even NULL) which allows for somes
optimizations (less or even no recursion) internally in pcre.

This might avoid crashes due to stack usage/exhaustion with pathological
patterns (see BZ 66119).



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1902732 13f79535-47bb-0310-9956-ffa450edef68