From: Warren Young
Date: April 25 2005 11:21am
Subject: Re: Core dump with query->store()
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Alex Vishnev wrote:

> Thanks for a reply. I am not quite sure why "this" is showing as 0x0 in the
> backtrace below. Query::store is being defined by this complicated macro
> inside the query.h (query_define1 - I believe). In any case, in my example I
> print the address of query object being constructed and connection object
> reference inside query object and both are valid. 

Have you run valgrind or some other memory usage debugger on your program?