cc004.hs:8:
Ambiguous type variable(s) `a'
in the constraint `PrelGHC.CReturnable a'
arising from the result of the _ccall_ to `f' at cc004.hs:8
In the first argument of `thenADR', namely `_ccall_ f'
cc004.hs:8:
Ambiguous type variable(s) `a'
in the constraint `PrelGHC.CReturnable a'
arising from the result of the _ccall_ to `f' at cc004.hs:8
In the first argument of `thenADR', namely `_ccall_ f'