GNU bug report logs - #19061
[PATCH] dfa: building superset, access to unallocated memory

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Norihiro Tanaka <noritnk <at> kcn.ne.jp>
Subject: bug#19061: closed (Re: bug#19061: [PATCH] dfa: building superset,
 access to unallocated memory)
Date: Sun, 16 Nov 2014 15:50:04 +0000

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Your bug report

#19061: [PATCH] dfa: building superset, access to unallocated memory

which was filed against the grep package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 19061 <at> debbugs.gnu.org.

-- 
19061: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=19061
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Jim Meyering <jim <at> meyering.net>
To: Norihiro Tanaka <noritnk <at> kcn.ne.jp>
Cc: 19061 <19061-done <at> debbugs.gnu.org>
Subject: Re: bug#19061: [PATCH] dfa: building superset,
 access to unallocated memory
Date: Sun, 16 Nov 2014 07:49:37 -0800

I have pushed that change and am preparing another snapshot.

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From: Norihiro Tanaka <noritnk <at> kcn.ne.jp>
To: bug-grep <at> gnu.org
Subject: [PATCH] dfa: building superset, access to unallocated memory
Date: Sat, 15 Nov 2014 18:11:32 +0900

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If original DFA does not have any CSETs, no memory allocated for CSET.
Even then DFA try to copy CSET from original DFA to the superset.  As
a result, it is caused to access to unallocated memory.  We have no test
case so that it is very difficult that we always reproduce this bug, as
CSET may be added only one in building superset.

[0001-dfa-building-superset-access-to-unallocated-memory.patch (text/plain, attachment)]

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