// Test for "contextually converted to bool" // { dg-do compile { target c++11 } } struct A { explicit operator bool(); }; void f (bool); struct B { bool b; }; struct C { operator int(); }; struct D { operator int(); }; int main() { A a; C c; D d; // These contexts use an explicit bool conversion. if (a) {} for (; a; ) {} do {} while (a); while (a) {} a ? 1 : 0; a || true; a && true; !a; a ? c : 1; a ? c : d; // These do not. switch (a); // { dg-error "" } bool b = a; // { dg-error "" } f(a); // { dg-error "" } B b2 = { a }; // { dg-error "" } a + true; // { dg-error "5:no match" } b ? a : true; // { dg-error "5:no match" } a ? a : true; // { dg-error "5:no match" } }