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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Craig James <craig_james@emolecules.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: libgcc double-free, backend won't die
Date: Tue, 11 Dec 2007 11:19:27 -0500
Message-ID: <16428.1197389967@sss.pgh.pa.us> (raw)
In-Reply-To: <475EB26B.5050702@emolecules.com>
References: <C34DDC3D.43F60%llonergan@greenplum.com>
	<7EB0D6C0-48E2-4155-8559-9113D3BD2785@ketema.net>
	<4728CF7B.7040306@gmail.com>
	<4728FB3E.3070709@shaw.ca>
	<472978BE.9@hagander.net>
	<4729B1E9.2080306@gmail.com>
	<475E4133.5080009@emolecules.com>
	<7891.1197385633@sss.pgh.pa.us>
	<475EA8D1.1060001@emolecules.com>
	<15262.1197387786@sss.pgh.pa.us>
	<475EB26B.5050702@emolecules.com>

Craig James <craig_james@emolecules.com> writes:
>> Please show that stuff you snipped --- it might have some relevant
>> information.  The stack trace looks a bit like a threading problem...

> Using host libthread_db library "/lib/libthread_db.so.1".

That's pretty suspicious, but not quite a smoking gun.  Does "info
threads" report more than 1 thread?

> Reading symbols from /usr/lib/libstdc++.so.6...done.
> Loaded symbols for /usr/lib/libstdc++.so.6

Hmm, I wonder whether *this* is the problem, rather than OpenBabel
per se.  Trying to use C++ inside the PG backend is another minefield
of things that don't work.

			regards, tom lane



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