I did some tests with cl_demo and found following:
In DocumentsWriter destructor postingsFreeCountDW is 5888 and the length of
postingsFreeListDW.values
is 7424. Maybe I'm wrong but if I understand the logic implemented in
getPostings and recyclePostings well,
the postingsFreeListDW.values above postingsFreeCountDW shouldn't be considered
a valid pointers
But they are by ArrayBase destructor, and delete attempt can (and will) cause
crash.
To test this, I simply added (yes it might be done more efficient way using
memset)
for ( size_t i = this->postingsFreeCountDW; i< this->postingsFreeListDW.length;
i++ ){
this->postingsFreeListDW.values[i] = NULL;
}
and cl_demo runs correctly.
Of course I could miss something important in code and produce memory leaks
instead of fixing bug....
Borek
> -----Original Message-----
> From: Itamar Syn-Hershko [mailto:[email protected]]
> Sent: Sunday, June 27, 2010 11:50 PM
> To: [email protected]
> Cc: [email protected]; Kostka Bořivoj; [email protected]
> Subject: Re: [CLucene-dev] vector subscript outofrangeexceptionduringindexing
>
> Hi all,
>
> Just to let you know Borek was right. The error you all hit was related
> to a typo (or rather, an incorrect port of code). I committed a fix to
> master [1].
>
> However, this introduced a new issue with double deletion of the
> postings array (DocumentsWriter::postingsFreeListDW). Some code tracking
> needs to be done here to decide on the best action. I'm done for today
> and I'm not sure when I'll be back on it again, so if you guys can have
> a look and see if you can come up with something, that'd be ideal.
>
> Itamar.
>
> [1]
> http://clucene.git.sourceforge.net/git/gitweb.cgi?p=clucene/clucene;a=commitdiff;h=6e
> a11164d92569a742ce01588e821a82fcff9f48
>
> On 25/6/2010 2:43 PM, Kostka Bořivoj wrote:
> > Thanks for the patch. Ufortunatelly the original problem is probably not
> > related to
> JIRA 1072 issue.
> > Any idea how to continue to tracing this? I'm ready to help but as my
> > knowledge of
> CLucene core
> > is limited I can't figure out what to trace.
> >
> > Borek
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