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Re: [HACKERS] Core dump in regression tests.

From: "Thomas A(dot) Szybist" <szybist(at)boxhill(dot)com>
To: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
Cc: emkxp01(at)mtcc(dot)demon(dot)co(dot)uk, hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] Core dump in regression tests.
Date: 1998-08-31 15:51:39
Message-ID: 199808311551.LAA08819@carmina.boxhill (view raw or flat)
Thread:
Lists: pgsql-hackers
In message <199808302324(dot)TAA28018(at)candle(dot)pha(dot)pa(dot)us>, Bruce Momjian writes:
> > I recompiled the latest cvs with -O2 and found that the crash on
> > table creation was NOT now failing so I'm a little confused :-(
> > 
> > I'm just updating my cvs, and will do another build and see how
> > things go.
> > 
> > If only I had the same failures as before I'd be able to confirm
> > your suspicions on indexing.c
> > 
> > Til Later,
> > Keith.
> > 
> > 
> > 
> 
> OK, I am applying my patch now.  I certainly fixes a potential problem,
> so I suspect it will fix the problems you are seeing.
> 
> Thomas, perhaps it will fix the regression problems too.  No way to
> know.
> 
> Here is the new while loop.  Much better.
> 
> ---------------------------------------------------------------------------
> 
> 
>     sd = index_beginscan(idesc, false, num_keys, skey);
>     while (indexRes = index_getnext(sd, ForwardScanDirection))
>     {
>         ItemPointer iptr;
> 
>         iptr = &indexRes->heap_iptr;
>         tuple = heap_fetch(heapRelation, SnapshotNow, iptr, &buffer);
>         pfree(indexRes);
>         if (HeapTupleIsValid(tuple))
>             break;
>     }
> 
> -- 
> Bruce Momjian                          |  830 Blythe Avenue
> maillist(at)candle(dot)pha(dot)pa(dot)us              |  Drexel Hill, Pennsylvania 19026
>   +  If your life is a hard drive,     |  (610) 353-9879(w)
>   +  Christ can be your backup.        |  (610) 853-3000(h)
> 

I tried patching indexing.c with this new loop--no luck.  I just
checked out a fresh copy, still no luck.  I don't understand why it now
works for Keith. 

Yesterday I tried this on Solaris, but I was bitten by not having
flock.

Tom Szybist
szybist(at)boxhill(dot)com

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Next:From: Bruce MomjianDate: 1998-08-31 16:07:57
Subject: Re: [HACKERS] other changes
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Subject: Re: [HACKERS] flock patch breaks things here

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