[Pharo-users] Passing nil with FFI

Hi, I am having trouble passing nil to a function with FFI (i.e. NULL, i.e. 0). For example: SDL2 glCreateContext: nil. The function expects a subclass of FFIExternalObject, so calls instVarAt: 1 but nil has no such field! Am I missing something? (like a special nil instance of FFIExternalObject) Note however that putting nil works when FFI expects a String. Cheers, Thibault Raffaillac