用于进行gcc测试

				// PR c++/15165								struct S 				{ 				    template  S(const T &e);				};				int operator *(const double, const S &); 				template 				struct X { 				    enum { SIXTY_FOUR=64 }; 				    struct node {				      unsigned char *ptr[sizeof(T)*SIXTY_FOUR];				        void d() {}				    };				    node *head; 				};				template struct X;