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Michael Sperber wrote: felix> Note that the Chicken FFI (for example) does not allow GC during the felix> invocation of foreign code,
Sure, and that *greatly* simplifies a lot of issues. It's also an unacceptable restriction for many Scheme systems.
Well, I wonder what that should be. Could you provide an example? (Note that callbacks can GC, so I don't see the slightest reason why this should be a restricition, condidering that it once and for all solves most hairy issues). cheers, felix