FreeTDS Development Group

[Frediano Ziglio <freddy77 AT gmail.com>]

Well... the fact that occurs even in no-optimized code is fine, it means
that is not a compiler or stack overflow problem. dummyTS is used for
TEXT as timestamp... however timestamp is stored in another place... not
into text buffer so how could dummyTS finish in text output buffer?
Probably this is due to a varchar(max) field which is not supported by
TDS protocol 7.1 so is returned like a TEXT field... have you other
varchar/text fields in your result? 

I'll look deeper...

freddy77

Il giorno lun, 07/12/2009 alle 16.24 +0100, Michal Seliga ha scritto:
> update - it happened with not optimized version of odbc library too :( only 
> this
> time garbage is not so random, if there is problem then there is text 
> 'dummyTS'
> appended to the end of result. i don't know where it came from
> 
> Michal Seliga wrote:
> > this problem is strange and i am not able to find out what happens
> > 
> > i am using freetds + iodbc + qt and i am connection to mssql 2005 database
> > 
> > *sometimes* i get wrong result from long varchar field. usually its good 
> > when
> > query is launched at the beginning and it suddnly stop working when it 
> > happens
> > later, when application is running for several minutes.
> > 
> > when i compiled libtdsodbc.c without optimalizations (-O0 instead of -O2 
> > in
> > Makefile in odbc directory) then everything started to behave well and 
> > this
> > didn't happened anymore
> > 
> > it looks to me that something wasn't initialized properly with 
> > optimalizations
> > enabled, but i am not able to find out what exactly it could be. when 
> > library
> > was compiled with -O2 there were some warnings, maybe they were related, 
> > maybe
> > not, i don't know.
> > 
> > i tried to do some tracing, but with -O0 there is no problem and with -O2
> > tracing is not very useful so i learned nothing.... i hope developers 
> > will have
> > more luck
> > 
> > 
> > 
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