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