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// RUN: %clang_cc1 %s -fsyntax-only -verify -Wcall-to-pure-virtual-from-ctor-dtor
struct A {
A() { f(); } // expected-warning {{call to pure virtual member function 'f' has undefined behavior; overrides of 'f' in subclasses are not available in the constructor of 'A'}}
~A() { f(); } // expected-warning {{call to pure virtual member function 'f' has undefined behavior; overrides of 'f' in subclasses are not available in the destructor of 'A'}}
virtual void f() = 0; // expected-note 2 {{'f' declared here}}
};
// Don't warn (or note) when calling the function on a pointer. (PR10195)
struct B {
A *a;
B() { a->f(); };
~B() { a->f(); };
};
// Don't warn if the call is fully qualified. (PR23215)
struct C {
virtual void f() = 0;
C() {
C::f();
}
};
template <typename T> struct TA {
TA() { f(); } // expected-warning {{call to pure virtual member function 'f' has undefined behavior; overrides of 'f' in subclasses are not available in the constructor of 'TA<float>'}}
~TA() { f(); } // expected-warning {{call to pure virtual member function 'f' has undefined behavior; overrides of 'f' in subclasses are not available in the destructor of 'TA<float>'}}
virtual void f() = 0; // expected-note 2{{'f' declared here}}
};
template <> struct TA<int> {
TA() { f(); }
~TA() { f(); }
void f();
};
template <> struct TA<long> {
TA() { f(); } // expected-warning {{call to pure virtual member function 'f' has undefined behavior; overrides of 'f' in subclasses are not available in the constructor of 'TA<long>'}}
~TA() { f(); } // expected-warning {{call to pure virtual member function 'f' has undefined behavior; overrides of 'f' in subclasses are not available in the destructor of 'TA<long>'}}
virtual void f() = 0; // expected-note 2{{'f' declared here}}
};
struct TB : TA<float> { // expected-note {{in instantiation of member function 'TA<float>::TA' requested here}}
void f() override; // expected-note@-1 {{in instantiation of member function 'TA<float>::~TA' requested here}}
};
TB tb;
struct TC : TA<int> {}; // ok
TC tc; // ok
struct TD : TA<long> {
void f() override;
};
TD td;
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