forked from OSchip/llvm-project
78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
// RUN: %clang_cc1 -std=c++20 -verify %s
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template <int N>
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struct A {
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~A() = delete; // expected-note {{explicitly marked deleted}}
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~A() requires(N == 1) = delete; // expected-note {{explicitly marked deleted}}
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};
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// FIXME: We should probably make it illegal to mix virtual and non-virtual methods
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// this way. See CWG2488 and some discussion in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105699.
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template <int N>
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struct B {
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~B() requires(N == 1) = delete; // expected-note {{explicitly marked deleted}}
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virtual ~B() = delete; // expected-note {{explicitly marked deleted}}
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};
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template <int N>
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concept CO1 = N == 1;
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template <int N>
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concept CO2 = N >
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0;
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template <int N>
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struct C {
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~C() = delete; // expected-note {{explicitly marked deleted}}
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~C() requires(CO1<N>) = delete;
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~C() requires(CO1<N> &&CO2<N>) = delete; // expected-note {{explicitly marked deleted}}
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};
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template <int N>
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struct D {
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~D() requires(N != 0) = delete; // expected-note {{explicitly marked deleted}}
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// expected-note@-1 {{candidate function has been explicitly deleted}}
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// expected-note@-2 {{candidate function not viable: constraints not satisfied}}
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// expected-note@-3 {{evaluated to false}}
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~D() requires(N == 1) = delete;
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// expected-note@-1 {{candidate function has been explicitly deleted}}
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// expected-note@-2 {{candidate function not viable: constraints not satisfied}}
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// expected-note@-3 {{evaluated to false}}
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};
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template <class T>
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concept Foo = requires(T t) {
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{t.foo()};
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};
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template <int N>
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struct E {
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void foo();
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~E();
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~E() requires Foo<E> = delete; // expected-note {{explicitly marked deleted}}
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};
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template struct A<1>;
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template struct A<2>;
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template struct B<1>;
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template struct B<2>;
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template struct C<1>;
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template struct C<2>;
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template struct D<0>; // expected-error {{no viable destructor found for class 'D<0>'}} expected-note {{in instantiation of template}}
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template struct D<1>; // expected-error {{destructor of class 'D<1>' is ambiguous}} expected-note {{in instantiation of template}}
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template struct D<2>;
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template struct E<1>;
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int main() {
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A<1> a1; // expected-error {{attempt to use a deleted function}}
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A<2> a2; // expected-error {{attempt to use a deleted function}}
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B<1> b1; // expected-error {{attempt to use a deleted function}}
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B<2> b2; // expected-error {{attempt to use a deleted function}}
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C<1> c1; // expected-error {{attempt to use a deleted function}}
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C<2> c2; // expected-error {{attempt to use a deleted function}}
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D<0> d0;
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D<1> d1;
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D<2> d2; // expected-error {{attempt to use a deleted function}}
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E<1> e1; // expected-error {{attempt to use a deleted function}}
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}
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