I found it in the manual, for anyone's reference the issue is a
collision with the new internal function called lower

On 18/03/2008, Nick Upson <nick.upson@...> wrote:
> fb2.0.3 on fedora
>
> SET SQL DIALECT 3;
> CREATE DATABASE 'localhost:/opt/unb/db/unbsl.fdb'
> PAGE_SIZE 8192
> DEFAULT CHARACTER SET UTF8;
>
> DECLARE EXTERNAL FUNCTION lower
> CSTRING(255)
> RETURNS CSTRING(255) FREE_IT
> ENTRY_POINT 'IB_UDF_lower' MODULE_NAME 'ib_udf';
>
> Statement failed, SQLCODE = -104
> Dynamic SQL Error
> -SQL error code = -104
> -Token unknown - line 1, column 27
> -lower
> At line 454 in file unbsl.ddl.sql
>