- | RErr | RInt _ | RBool _ -> "-1", "int "
- | RInt64 _ -> "-1", "int64_t "
- | RConstString _ | RConstOptString _ -> "NULL", "const char *"
- | RString _ | RBufferOut _ -> "NULL", "char *"
- | RStringList _ | RHashtable _ -> "NULL", "char **"
- | RStruct (_, typ) -> "NULL", sprintf "struct guestfs_%s *" typ
+ | RErr | RInt _ | RBool _ -> "int "
+ | RInt64 _ -> "int64_t "
+ | RConstString _ | RConstOptString _ -> "const char *"
+ | RString _ | RBufferOut _ -> "char *"
+ | RStringList _ | RHashtable _ -> "char **"
+ | RStruct (_, typ) -> sprintf "struct guestfs_%s *" typ