__export ShouldSucceed B{op2} C{op1};
1 class {C a}  => B a where {op2 :: a -> a -> a} ;
1 class C a where {op1 :: a -> a} ;
1 zddmop1 :: __forall [a] => {C a} -> a -> a ;
1 zddmop2 :: __forall [a] => {B a} -> a -> a -> a ;