C that setjmps -> haskell -> C that might longjmp

[Tyson Whitehead]

If I have the following call sequence

C code -> Haskell code -> various C code bits

where the various C code bits on the right might do a longjmp (their version 
of an exception) and jumping back to the C code on the left.

Is it possible to have C code on the left then somehow tell GHC to cleanup the 
aborted Haskell code/resume executing it with an exception, or is the only 
option to setjmp wrap all the various C code bits on the right?

Thanks!  -Tyson
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