1 // RUN: %clang_cc1 -x c++ -verify -fsyntax-only %s 2 3 void f1(); 4 5 struct S { 6 static void f2(); 7 }; 8 9 extern void f3() __attribute__((weak_import)); 10 11 struct S2 { 12 static void f4() __attribute__((weak_import)); 13 }; 14 15 bool f5(); 16 bool f6(int); 17 bar()18void bar() { 19 bool b; 20 21 b = f1; // expected-warning {{address of function 'f1' will always evaluate to 'true'}} \ 22 expected-note {{prefix with the address-of operator to silence this warning}} 23 if (f1) {} // expected-warning {{address of function 'f1' will always evaluate to 'true'}} \ 24 expected-note {{prefix with the address-of operator to silence this warning}} 25 b = S::f2; // expected-warning {{address of function 'S::f2' will always evaluate to 'true'}} \ 26 expected-note {{prefix with the address-of operator to silence this warning}} 27 if (S::f2) {} // expected-warning {{address of function 'S::f2' will always evaluate to 'true'}} \ 28 expected-note {{prefix with the address-of operator to silence this warning}} 29 b = f5; // expected-warning {{address of function 'f5' will always evaluate to 'true'}} \ 30 expected-note {{prefix with the address-of operator to silence this warning}} \ 31 expected-note {{suffix with parentheses to turn this into a function call}} 32 b = f6; // expected-warning {{address of function 'f6' will always evaluate to 'true'}} \ 33 expected-note {{prefix with the address-of operator to silence this warning}} 34 35 // implicit casts of weakly imported symbols are ok: 36 b = f3; 37 if (f3) {} 38 b = S2::f4; 39 if (S2::f4) {} 40 } 41