From: Oliver Fischer <nexus@fileseeker.net>
To: Alfred Perlstein <bright@wintelcom.net>
Cc: pgsql-interfaces@postgresql.org
Subject: Re: PQclear() causes coredump
Date: Mon, 16 Oct 2000 08:48:16 +0200
Message-ID: <003001c0373d$0ff8cbf0$0fed54d4@leveld.de> (raw)
References: <005501c036d4$6e37c810$0fed54d4@leveld.de>
<20001015132509.J272@fw.wintelcom.net>
Hy,
I found the bug this night. The reason was the call to PQclear()
in the destructor of my class. In some places I used a assingment
like:
QtResultSet obj = otherQtResultSetObj;
So, the destruktor of otherQtResultObj was called. The coredump
occured within obj when PQclaer was called another time.
Byem
Oliver
----- Original Message -----
From: "Alfred Perlstein" <bright@wintelcom.net>
To: "Oliver Fischer" <nexus@fileseeker.net>
Cc: <pgsql-interfaces@postgresql.org>
Sent: Sunday, October 15, 2000 10:25 PM
Subject: Re: [INTERFACES] PQclear() causes coredump
> * Oliver Fischer <nexus@fileseeker.net> [001015 11:19] wrote:
> > Hi Folks,
> >
> > I write a program in c++ using PostgreSQL 7.0 at the moment.
> > During this, I have
> > written some small classes for accessing the database. One of
> > this classes is QtResultSet. I use them to manage my
statments.
> >
> > To avoid memory leaks, I use the dtor to free the resultset
with
> > PQclear(). Unfortunaly every call to PQclear causes a
coredump.
> > What is my mistake?
> >
> > === QtResultSet.h ===
>
> [snip]
>
> Perhaps you can post us a traceback from your coredump? If you
could
> also give a relatively simple way to reproduce the bug with a
driver
> program that uses your class it would be helpful.
>
> -Alfred
>
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To: pgsql-interfaces@postgresql.org
Cc: nexus@fileseeker.net, bright@wintelcom.net
Subject: Re: PQclear() causes coredump
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