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+++ This bug was initially created as a clone of Bug #1161587 +++

As reported to upstream <http://bugs.exim.org/show_bug.cgi?id=1537>:

$ pcretest  
PCRE version 8.36 2014-09-26

  re> /(?:((abcd))|(((?:(?:(?:(?:abc|(?:abcdef))))b)abcdefghi)abc)|((*ACCEPT)))/
data> 1234abcd
 0:
 1:
 2:
 3:
 4:
 5:
data>

Which should return "unset" groups 1--4. The library forgets to set those offsets to -1.

Fixed by upstream:

commit e2eeaf85f1b5d6c4669b621d309ff904cbf96f4b
Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
Date:   Wed Nov 5 15:08:03 2014 +0000

    Fix bug when there are unset groups prior to (*ACCEPT) within a capturing
    group.
    
    
    git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1510 2f5784b3-3f2a-0410-8824-cb99058d5e15

[...]
--- Additional comment from Petr Pisar on 2014-11-07 12:28:00 GMT ---

Simpler reproducer:

Was:

  re> /(x)|((*ACCEPT))/
data> abcd
 0: 
 1: 
 2: 

Should be:

  re> /(x)|((*ACCEPT))/
data> abcd
 0: 
 1: <unset>
 2: 
data>

----

RHEL-7 is affected (pcre-8.32-13.el7).

Created attachment 954919 [details]
Upstream fix ported to 8.32

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2142.html