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Created attachment 1020204[details]
Upstream fix ported to 8.33 applicable to 8.32
+++ This bug was initially created as a clone of Bug #1210423 +++
This command never halts:
$ echo -n a | pcregrep '(?<=\Ka)'
Fixed with upstream commit:
commit b4332d7dd831b3547b3f541495de4a79554e538e
Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
Date: Tue Apr 7 15:52:11 2015 +0000
Fix pcregrep loop when \K is used in a lookbehind assertion.
git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1543 2f5784b3-3f2a-0410-8824-cb99058d5e15
Similar bug is in pcretest:
$ printf '%s\n%s\n' '/(?<=\Ka)/g+' 'aaaaa' | pcretest
Fixed with upstream commitL
commit c3579a7581cb8b3ca3c9617d63083afea29de646
Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
Date: Tue Apr 7 16:19:03 2015 +0000
Fix pcretest loop for \K in lookbehind assertion.
git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1544 2f5784b3-3f2a-0410-8824-
cb99058d5e15
All Fedoras are affected.
[...]
------
pcre-8.32-14.el7.x86_64 is affected at pcretest only. The pcregrep looks fine.
I will patch only the pcretest. If somebody can reproduce the infinite loop in pcregrep tool, please speak.