deleted-function.cpp
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -fcxx-exceptions %s
int i = delete; // expected-error {{only functions can have deleted definitions}}
void fn() = delete; // expected-note {{candidate function has been explicitly deleted}}
void fn2(); // expected-note {{previous declaration is here}}
void fn2() = delete; // expected-error {{deleted definition must be first declaration}}
void fn3() = delete; // expected-note {{previous definition is here}}
void fn3() { // expected-error {{redefinition}}
}
void ov(int) {} // expected-note {{candidate function}}
void ov(double) = delete; // expected-note {{candidate function has been explicitly deleted}}
struct WithDel {
WithDel() = delete; // expected-note {{'WithDel' has been explicitly marked deleted here}}
void fn() = delete; // expected-note {{'fn' has been explicitly marked deleted here}}
operator int() = delete; // expected-note {{'operator int' has been explicitly marked deleted here}}
void operator +(int) = delete;
int i = delete; // expected-error {{only functions can have deleted definitions}}
};
void test() {
fn(); // expected-error {{call to deleted function 'fn'}}
ov(1);
ov(1.0); // expected-error {{call to deleted function 'ov'}}
WithDel dd; // expected-error {{call to deleted constructor of 'WithDel'}}
WithDel *d = 0;
d->fn(); // expected-error {{attempt to use a deleted function}}
int i = *d; // expected-error {{invokes a deleted function}}
}
struct DelDtor {
~DelDtor() = delete; // expected-note 9{{here}}
};
void f() {
DelDtor *p = new DelDtor[3]; // expected-error {{attempt to use a deleted function}}
delete [] p; // expected-error {{attempt to use a deleted function}}
const DelDtor &dd2 = DelDtor(); // expected-error {{attempt to use a deleted function}}
DelDtor dd; // expected-error {{attempt to use a deleted function}}
throw dd; // expected-error {{attempt to use a deleted function}}
}
struct X : DelDtor {
~X() {} // expected-error {{attempt to use a deleted function}}
};
struct Y {
DelDtor dd;
~Y() {} // expected-error {{attempt to use a deleted function}}
};
struct Z : virtual DelDtor {
~Z() {} // expected-error {{attempt to use a deleted function}}
};
DelDtor dd; // expected-error {{attempt to use a deleted function}}
template<typename> void test2() = delete;
template void test2<int>();
template<typename> void test3() = delete;
template<typename> void test3();
template void test3<int>();
void test4() {} // expected-note {{previous definition is here}}
void test4() = delete; // expected-error {{redefinition of 'test4'}}
struct DelCtor { // expected-note 4{{implicit}}
DelCtor(int) = delete; // expected-note 14{{deleted}}
// ensure the class is not an aggregate
DelCtor(int, int, int, int);
};
DelCtor dc1 = 0; // expected-error {{deleted}}
DelCtor dc2(0); // expected-error {{deleted}}
DelCtor dc3 = {0}; // expected-error {{deleted}}
DelCtor dc4{0}; // expected-error {{deleted}}
DelCtor dc5 = (DelCtor)0; // expected-error {{deleted}}
DelCtor dc6 = DelCtor(0); // expected-error {{deleted}}
DelCtor dc7 = DelCtor{0}; // expected-error {{deleted}}
DelCtor *dc8 = new DelCtor(0); // expected-error {{deleted}}
DelCtor *dc9 = new DelCtor{0}; // expected-error {{deleted}}
DelCtor dc10[] = {0}; // expected-error {{deleted}}
int use_dc(DelCtor); // expected-note 2{{here}}
int dc11 = use_dc(0); // expected-error {{deleted}}
int dc12 = use_dc({0}); // expected-error {{deleted}}
int use_dcr(const DelCtor &); // expected-note {{here}}
int dc13 = use_dcr(0); // expected-error {{deleted}}
int dc14 = use_dcr({0}); // expected-error {{deleted}}
struct DelCtorTemplate {
template<typename T> DelCtorTemplate(T) = delete; // expected-note {{deleted}}
};
int use_dct(const DelCtorTemplate &);
int dc15 = use_dct(0); // expected-error {{deleted}}