14 lines · c
1#ifndef _LIBCPP_TYPE_TRAITS2#define _LIBCPP_TYPE_TRAITS3 4 5template <class _Tp>6struct underlying_type7{8 typedef __underlying_type(_Tp) type;9};10 11#endif // _LIBCPP_TYPE_TRAITS12 13#include "B.h"14 1#ifndef _LIBCPP_TYPE_TRAITS2#define _LIBCPP_TYPE_TRAITS3 4 5template <class _Tp>6struct underlying_type7{8 typedef __underlying_type(_Tp) type;9};10 11#endif // _LIBCPP_TYPE_TRAITS12 13#include "B.h"14