[fpc-pascal] Re: SQLDB/Firebird unable to open table with more than 128 fields

Funky Beast funkybeast at pacific.net.sg
Sun Mar 22 11:40:15 CET 2009

Joost van der Sluis wrote:
> Op zondag 22-03-2009 om 17:37 uur [tijdzone +0800], schreef Funky Beast:
>> I found the culprit.
>> In TIBConnection.PrepareStatement's variable section, x was declared
>> as a shortint
>> which would cause problem when its used for allocating memmory for the
>> SQLVAR elements,
>> when there are more than 128 fields.
>> Also same as above in TIBConnection.FreeSQLDABuffer.
>> I changed var x in both location into smallint and everything worked
>> fine for me.
> You are sure that a smallint is large enough in all cases? 

I'm not sure, but according to:
the approximation of maximum 16,384 integer fields could be allowed per table,
and smallint has a range of -32768..32767, double of whats stated.
Unless someone has more columns of smaller size data.

Please let me know the ideal type before I prepare the patch.

>> I'm not sure weather it will impact any parts of TIBConnection, so
>> I will leave it to the fcl-db governors to decide. 
> Can you attach a patch to the bug-report? And maybe give your real name
> so we can add that to the svn-log? (In the case that 'Funky Beast' is
> your real name, my apologies. ;) )
> Joost.

Should the patch be created for trunk or fixes_22 (I was using fixes_22 to test).

Funky Beast

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