Roundtrip test failed

AST 1:

Module () (Just (ModuleHead () (ModuleName () "BlockArguments") Nothing Nothing)) [LanguagePragma () [Ident () "BlockArguments"]] [] [PatBind () (PVar () (Ident () "foo")) (UnGuardedRhs () (App () (App () (Var () (UnQual () (Ident () "when"))) (Paren () (InfixApp () (Var () (UnQual () (Ident () "x"))) (QVarOp () (UnQual () (Symbol () ">"))) (Lit () (Int () 0 "0"))))) (Do () [Qualifier () (App () (Var () (UnQual () (Ident () "print"))) (Var () (UnQual () (Ident () "x")))),Qualifier () (Var () (UnQual () (Ident () "exitFailure")))]))) Nothing,PatBind () (PVar () (Ident () "bar")) (UnGuardedRhs () (App () (App () (Var () (UnQual () (Ident () "withForeignPtr"))) (Var () (UnQual () (Ident () "fptr")))) (Lambda () [PVar () (Ident () "ptr")] (App () (App () (App () (Var () (UnQual () (Ident () "c_memcpy"))) (Var () (UnQual () (Ident () "buf")))) (Var () (UnQual () (Ident () "ptr")))) (Var () (UnQual () (Ident () "size"))))))) Nothing,FunBind () [Match () (Ident () "baz") [PVar () (Ident () "arg1"),PVar () (Ident () "arg2"),PVar () (Ident () "arg3"),PVar () (Ident () "arg4")] (UnGuardedRhs () (InfixApp () (InfixApp () (Var () (UnQual () (Ident () "initialValue"))) (QVarOp () (UnQual () (Symbol () "&"))) (App () (App () (Var () (UnQual () (Ident () "someFunction"))) (Var () (UnQual () (Ident () "arg1")))) (Var () (UnQual () (Ident () "arg2"))))) (QVarOp () (UnQual () (Symbol () ">>="))) (App () (Var () (UnQual () (Ident () "traverse"))) (Lambda () [PTuple () Boxed [PVar () (Ident () "x"),PVar () (Ident () "y")]] (InfixApp () (Do () [Generator () (PVar () (Ident () "a")) (App () (Var () (UnQual () (Ident () "f"))) (Var () (UnQual () (Ident () "x")))),Generator () (PVar () (Ident () "b")) (App () (Var () (UnQual () (Ident () "g"))) (Var () (UnQual () (Ident () "y")))),Qualifier () (App () (App () (Var () (UnQual () (Ident () "h"))) (Var () (UnQual () (Ident () "a")))) (Var () (UnQual () (Ident () "b"))))]) (QVarOp () (UnQual () (Symbol () ">>="))) (App () (App () (Var () (UnQual () (Ident () "anotherFunction"))) (Var () (UnQual () (Ident () "arg3")))) (Var () (UnQual () (Ident () "arg4"))))))))) Nothing]]

AST 2:

Module () (Just (ModuleHead () (ModuleName () "BlockArguments") Nothing Nothing)) [LanguagePragma () [Ident () "BlockArguments"]] [] [PatBind () (PVar () (Ident () "foo")) (UnGuardedRhs () (App () (App () (Var () (UnQual () (Ident () "when"))) (Paren () (InfixApp () (Var () (UnQual () (Ident () "x"))) (QVarOp () (UnQual () (Symbol () ">"))) (Lit () (Int () 0 "0"))))) (Paren () (Do () [Qualifier () (App () (Var () (UnQual () (Ident () "print"))) (Var () (UnQual () (Ident () "x")))),Qualifier () (Var () (UnQual () (Ident () "exitFailure")))])))) Nothing,PatBind () (PVar () (Ident () "bar")) (UnGuardedRhs () (App () (App () (Var () (UnQual () (Ident () "withForeignPtr"))) (Var () (UnQual () (Ident () "fptr")))) (Paren () (Lambda () [PVar () (Ident () "ptr")] (App () (App () (App () (Var () (UnQual () (Ident () "c_memcpy"))) (Var () (UnQual () (Ident () "buf")))) (Var () (UnQual () (Ident () "ptr")))) (Var () (UnQual () (Ident () "size")))))))) Nothing,FunBind () [Match () (Ident () "baz") [PVar () (Ident () "arg1"),PVar () (Ident () "arg2"),PVar () (Ident () "arg3"),PVar () (Ident () "arg4")] (UnGuardedRhs () (InfixApp () (InfixApp () (Var () (UnQual () (Ident () "initialValue"))) (QVarOp () (UnQual () (Symbol () "&"))) (App () (App () (Var () (UnQual () (Ident () "someFunction"))) (Var () (UnQual () (Ident () "arg1")))) (Var () (UnQual () (Ident () "arg2"))))) (QVarOp () (UnQual () (Symbol () ">>="))) (App () (Var () (UnQual () (Ident () "traverse"))) (Paren () (Lambda () [PTuple () Boxed [PVar () (Ident () "x"),PVar () (Ident () "y")]] (InfixApp () (Do () [Generator () (PVar () (Ident () "a")) (App () (Var () (UnQual () (Ident () "f"))) (Var () (UnQual () (Ident () "x")))),Generator () (PVar () (Ident () "b")) (App () (Var () (UnQual () (Ident () "g"))) (Var () (UnQual () (Ident () "y")))),Qualifier () (App () (App () (Var () (UnQual () (Ident () "h"))) (Var () (UnQual () (Ident () "a")))) (Var () (UnQual () (Ident () "b"))))]) (QVarOp () (UnQual () (Symbol () ">>="))) (App () (App () (Var () (UnQual () (Ident () "anotherFunction"))) (Var () (UnQual () (Ident () "arg3")))) (Var () (UnQual () (Ident () "arg4")))))))))) Nothing]]