1*f4a2713aSLionel Sambuc void f() __attribute__((unavailable)); 2*f4a2713aSLionel Sambuc void g(); 3*f4a2713aSLionel Sambuc #define g() f() 4*f4a2713aSLionel Sambuc #define h() f() 5*f4a2713aSLionel Sambuc #define x x 6*f4a2713aSLionel Sambuc #define h2() f() 7*f4a2713aSLionel Sambuc 8*f4a2713aSLionel Sambuc #define h3() 9*f4a2713aSLionel Sambuc #undef h3 10