#include #define T(t) (t*)0; #define F(t,n) {t *y = &x.n;} #define C(n) switch(n){case n:;} static void f() { T(clock_t) { struct tms x; F(clock_t,tms_utime) F(clock_t,tms_stime) F(clock_t,tms_cutime) F(clock_t,tms_cstime) } {clock_t(*p)(struct tms*) = times;} }