[fpc-pascal] question on generics for 3.2.2

[P Padil]

Was trying to code a recursive generic function but kept getting an error:
"Error: Global Generic template references static symtable
A generic declared in the interface section of a unit must not reference symbols that belong solely to the implementation section of that unit.”

Is there a trick to this and I missed the memo, or just not allowed? Resorted to concrete types to get it to compile.

Thanks
Pete