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freetds - Re: [freetds] segmentation fault when null field encountered

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  • From: "Adam Perks" <adamperks81 AT gmail.com>
  • To: <freetds AT lists.ibiblio.org>
  • Subject: Re: [freetds] segmentation fault when null field encountered
  • Date: Wed, 12 Jul 2006 10:42:37 +1000


----- Original Message ----- From: "ZIGLIO, Frediano, VF-IT" <Frediano.Ziglio AT vodafone.com>
To: "Adam Perks" <adamperks81 AT gmail.com>; "FreeTDS Development Group" <freetds AT lists.ibiblio.org>
Sent: Saturday, July 08, 2006 12:19 AM
Subject: RE: [freetds] segmentation fault when null field encountered



Hi All,

I have FreeTDS working on two machines: and i386 and an x64
both running Fedora Core 4 32bit and 64bit versions
respectively. The i386 machine works fine, however the x64
crashes when a null result is returned with $whatever =
odbc_result($result, 1);

Both PCs are set up the same, and I installed the FC4 FreeTDS
packages in the same way. isql & tsql also work perfectly
with both and I have configured the FreeTDS configuration &
unixODBC configurations the same. The necessary PHP modules
have also been installed and configured correctly.



Well, so you are using a PHP script with a stack like

PHP <=> php_odbc <=> ODBC <=> FreeTDS <=> sql server

I suspect a bug in one of the first 4... probably from php_odbc to
FreeTDS.

I would
- simplify script at minimun
- be able to execute script from command line
- enale core (ulimit -c unlimited)
- launch script (php script.php)
- load core with gdb (gdb $(which php) core.xxx)
- dump stack (bt)

Does this seem like a problem relating the 64bit FC4 package
or something else?

Any help would be greatly appreciated- I have spent three
days trying to get this to work!

Currently I don't have a x64 environment to play with :)

freddy77





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