On 3 July 2017 at 03:12, Andres Freund <and...@anarazel.de> wrote: > Hi, > > On 2017-07-02 20:58:52 +0200, Michal Novotný wrote: >> thank you all for your advice. I've been investigating this a little more >> and finally it turned out it's not a bug in libpq although I got confused >> by going deep as several libpq functions. The bug was really on our side >> after trying to use connection pointer after calling PQfinish(). The code >> is pretty complex so it took some time to investigate however I would like >> to apologize for "blaming" libpq instead of our code. > > Usually using a tool like valgrind is quite helpful to find issues like > that, because it'll show you the call-stack accessing the memory and > *also* the call-stack that lead to the memory being freed.
Yep, huge help. BTW, on Windows, the free tool DrMemory (now 64-bit too, yay) or commercial Purify work great. -- Craig Ringer http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers