Where did you get this example? The straightforward answer is that "TheAnswer" appears to be undefined. In this context, 'ffiCall:' is expecting a valid C expression that indicates the type of a formal argument, followed by the formal argument.
Based on the examples in the UFFI booklet, I would expect that to be something like 'int -42' rather than "TheAnswer". But knowing more of the context of where you got your code would help... -t -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
