Hello,

I think I discovered a bug, when using UDFs.
I use several UDFs, which I build by myself. Until I changed to FB1.5
all UDFs worked well as expected, but now I discovered a strange
behavior.
I think IBO interprets the datatype of the paramters passed to the UDF
wrong.
The first and second parameter is interpreted right, but every further
parameter is interpreted as the same type like the 2nd parameter.

I give you an example to understand what I meen:

The Pascal Code of the UDF :

function test_udf (var intparam : integer;
var intparam2 : integer;
var doubleparam : double) : double; stdcall;

begin
doubleparam := (doubleparam + intparam + intparam2) / 2;
result := doubleparam;
end;

The UDF is declared to FB like that:

DECLARE EXTERNAL FUNCTION TEST_UDF
integer,
integer,
double precision
RETURNS double precision BY VALUE
ENTRY_POINT 'test_udf' MODULE_NAME 'testlib'^


When I pass the following statement

select test_udf (1, 2, 2.9) from rdb$database in IBConsole I get the
correct result 2.95

Doing the same in EMS Interbasemanager also brings the same result.

When I now change the statement to
select test_udf (:a, :b, :c) from rdb$database

I will be asked to enter the 3 parameters.

I enter 1 for :a, 2 for :b and 2.9 for :c then I get the result 2.5

The same problem occures, when I use it within my application,
designed with IBO.

I use IBO 4.3 and FB 1.5 RC7

cu
Helmut