> We have a hybrid O'Caml/C application in which ML calls C,
> which calls ML, like this:
> The "lower" ML(3) raises an exception, which is dealt with
> by C(2) using one of the callback_exn functions. When the C
> function returns, the "upper" ML function generates a bus
> error on Solaris 8, on writing to a mutable global variable.
> We are using O'Caml 3.04 with the bytecode compiler.
> 
> Is this program structure allowed?

Yes, it is, and if you compile with the native-code compiler ocamlopt,
it works fine.  However, you've hit a bug in the bytecode interpreter
that causes callback_exn to misbehave.  This will be fixed shortly.
Thanks for reporting the problem.

- Xavier Leroy
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