1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 %s -emit-llvm -o - 2*f4a2713aSLionel Sambuc 3*f4a2713aSLionel Sambuc struct s { 4*f4a2713aSLionel Sambuc unsigned long int field[0]; 5*f4a2713aSLionel Sambuc }; 6*f4a2713aSLionel Sambuc 7*f4a2713aSLionel Sambuc #define OFFS \ 8*f4a2713aSLionel Sambuc (((char *) &((struct s *) 0)->field[0]) - (char *) 0) 9*f4a2713aSLionel Sambuc 10*f4a2713aSLionel Sambuc int foo[OFFS]; 11*f4a2713aSLionel Sambuc 12*f4a2713aSLionel Sambuc 13