Re: conn = PQconnectdb(conninfo);

Peter Kroon <plakroon(at)gmail(dot)com> writes:
> Every now and then my program will abort.
> IAnd this is because: conn = PQconnectdb(conninfo);
> The error given:
> *** Error in `./server_prog': malloc(): smallbin double linked list
> corrupted: 0x092c10a0 ***

This looks like malloc() complaining because something has corrupted its
bookkeeping data, which generally means that something previously wrote
past the end of a malloc'd data chunk, or tried to write into an
already-freed chunk. The odds are very high that the bug is in your
program rather than libpq, though, because no such problems have been
found within libpq recently.

valgrind is a fairly useful tool for tracking down such issues.

regards, tom lane