Christoph Kottke writes: > hi, > > i've installed the latest cvs revisions for libdbi and libdbi-driver and > when ever i try to fetch more than > 3 row from an firebird table it's end in an segfault. > > but when i revert the "bull patch" in dbi_result.c it works like a charm. > Hi,
thanks for the bug report. This one barely came in time to stop me from packaging the long-awaited 0.9 releases :-/ Unfortunately, I haven't been able to make firebird operational on my FreeBSD box for at least two years so I cannot do any real debugging here. I plan to set up a Debian box shortly which may be a better platform for this database engine. It took me a couple of hours to more or less understand what's going on in theory. In any case, I've got a hunch. I assume the "bull patch" was correct as it fixed a memory leak shown by valgrind, without causing any problems with the drivers that I can test over here. What if the firebird driver just happened to work ok as long as libdbi prevented one particular bordercase to occur, at the expense of some bits of leaked memory? In that case it would be wrong to revert the patch. Instead, someone in the know (Christian please ???) would have to review the result fetching code of the firebird driver with an eye on numrows_matched. According to what I've seen in the driver code, firebird makes it particularly hard to get things right. Also, Christoph, did you run make check? If that didn't crash, we need extra tests to discover problems like these. regards, Markus -- Markus Hoenicka http://www.mhoenicka.de AQ score 38 ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ libdbi-users mailing list libdbi-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libdbi-users
