1f (double *ty) 2{ 3 *ty = -1.0; 4} 5 6main () 7{ 8 double foo[6]; 9 double tx = 0.0, ty, d; 10 11 f (&ty); 12 13 if (ty < 0) 14 ty = -ty; 15 d = (tx > ty) ? tx : ty; 16 if (ty != d) 17 abort (); 18 exit (0); 19} 20