new Client 2.5.8 to server 2.5.7 server caused problem
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                 Key: CORE-5709
                 URL: http://tracker.firebirdsql.org/browse/CORE-5709
             Project: Firebird Core
          Issue Type: Bug
          Components: API / Client Library
    Affects Versions: 2.5.8
         Environment: Windows 10
            Reporter: Tommi Prami
            Priority: Minor


We accidentally updated 2.5.8 client to environment where is older 2.5.7 
server. 

With field defined as

CREATE DOMAIN CMN_BOOLEAN AS SMALLINT
         CHECK (VALUE IS NULL OR VALUE IN (0, 1));

Now it crashes in our Delphi client application (Using IbDAC from DevArt)  that 
field can't be accessed AsBoolean. (Just fixed from reading it AsInteger to 
AsBoolean to work with new client and server and with pure 2.5.7 environment)

This might be IbDAC issue, or Firebird issue. 

Just filed this ticket to Firebird team can check is there some difference 
reading same field with 2.5.7 or 2.5.8 client when server is 2.5.7. 

I have feeling that using mismatched fbclient.dll have not been much of a 
problem in past versions, (If it is same major version at least)

-Tee-



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