>>>>> "Diego" == Diego Novillo <dnovi...@google.com> writes:
Diego> +struct GTY(()) vec_prefix Diego> +{ Diego> + unsigned num; Diego> + unsigned alloc; Diego> +}; Diego> + Diego> +/* Vector type, user visible. */ Diego> +template<typename T> Diego> +struct GTY(()) vec_t Diego> +{ Diego> + vec_prefix prefix; Diego> + T GTY((length ("%h.prefix.num"))) vec[1]; Diego> +}; I'm curious why you didn't use inheritance here. template<typename T> struct GTY(()) vec_t : public vec_prefix { ... }; Tom