> i use green-card with ghc's FFI export to sth like
>
> Haskell -----> C ------> Haskell
>
> the program is just arithmatic operations. the program "seg fault"
> in the callback from C to Haskell. anyone whether it is a bug?
There aren't any known bugs, but there are many known pitfalls. You'll
need to give us more information, at least: the code that causes the
crash (preferably a small example), the exact GHC command lines used to
compile it, your GHC version, your machine and OS version.
Cheers,
Simon
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