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)