ref: 4eb0595fdcfb5064a5f81b1ffe4fb2de4c6a3dd3 dir: /tests/execute/0065-ifdef.c/
#ifdef FOO XXX #ifdef BAR XXX #endif XXX #endif #define FOO 1 #ifdef FOO #ifdef FOO int x = 0; #endif int main() { return x; } #endif