[fpc-pascal] "Invalid field size" when using UIB with fpc 2.3.1

Lukas Gradl fpc at ssn.at
Tue Sep 9 02:07:08 CEST 2008


Thanks for your help.
I could find the problem in uibdataset.pas and fix it. Already sent a 
Bugreport and a fix to the UIB-Forum.


Joost van der Sluis schrieb:
> Op maandag 08-09-2008 om 16:13 uur [tijdzone +0200], schreef Lukas
> Gradl:
>> Just had to upgrade to fpc 2.3.1 for some reason.
>> But using fpc 2.3.1 UIB produces an "Invalid field size" error when 
>> trying to open a UIBDataset.
> It's a bug in UIB. But it's a bug that most TDataset-descendents suffer
> from. That's because the bug is hidden in Delphi. It is also hidden in
> fpc's released versions, because it causes too much trouble. But this
> "bug" does pop-ups in the development version. Until all
> TDataset-descendents I know of have fixed it, it will be hidden in
> released versions, though.
>> The same program works when using fpc 2.2.3.
>> For demonstrating the problem I created the following program:
>> When trying to open an UIBDataset I get an error: "EDatabaseError : 
>> Invalid field size : 4828"
> Which is true, 4828 is an invalid field-size for an integer-field. I
> guess that UIB doesn't set the field-size properly. In fact, the
> 'field-size' property should contain the amount of decimals in this
> case. So the field-size should be set to 0.
> Maybe you can look it up  in UIB where it's set?
> Joost
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