derek.holloway
7502bf64a4
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189 lines
3.5 KiB
C++
189 lines
3.5 KiB
C++
// RUN: %clang_cc1 -std=c++20 -verify %s
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template<typename T>
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concept D = true;
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template<typename T>
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struct A { // expected-note {{defined here}}
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template<typename U, bool V>
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void f() requires V;
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template<>
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void f<short, true>();
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template<D U>
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void g();
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template<typename U, bool V> requires V
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struct B;
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// expected-note@-2 {{previous template declaration is here}}
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template<typename U, bool V> requires V
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struct B<U*, V>;
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template<>
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struct B<short, true>;
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template<D U>
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struct C;
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// expected-note@-2 {{previous template declaration is here}}
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template<D U>
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struct C<U*>;
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template<typename U, bool V> requires V
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static int x;
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// expected-note@-2 {{previous template declaration is here}}
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template<typename U, bool V> requires V
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static int x<U*, V>;
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template<>
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int x<short, true>;
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template<D U>
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static int y;
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// expected-note@-2 {{previous template declaration is here}}
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template<D U>
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static int y<U*>;
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};
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template<typename T>
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template<typename U, bool V>
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void A<T>::f() requires V { }
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template<typename T>
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template<D U>
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void A<T>::g() { }
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template<typename T>
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template<typename U, bool V> requires V
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struct A<T>::B { };
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template<typename T>
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template<typename U, bool V> requires V
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struct A<T>::B<U*, V> { };
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template<typename T>
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template<typename U, bool V> requires V
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struct A<T>::B<U&, V> { };
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template<typename T>
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template<D U>
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struct A<T>::C { };
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template<typename T>
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template<D U>
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struct A<T>::C<U*> { };
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template<typename T>
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template<typename U, bool V> requires V
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int A<T>::x = 0;
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template<typename T>
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template<typename U, bool V> requires V
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int A<T>::x<U*, V> = 0;
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template<typename T>
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template<typename U, bool V> requires V
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int A<T>::x<U&, V> = 0;
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template<typename T>
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template<D U>
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int A<T>::y = 0;
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template<typename T>
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template<D U>
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int A<T>::y<U*> = 0;
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// FIXME: This should be accepted.
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template<>
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template<typename U, bool V>
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void A<short>::f() requires V;
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// expected-error@-1 {{out-of-line declaration of 'f' does not match any declaration in 'A<short>'}}
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template<>
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template<>
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void A<short>::f<int, true>();
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template<>
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template<>
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void A<void>::f<int, true>();
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template<>
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template<D U>
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void A<short>::g();
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// FIXME: This should be accepted.
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template<>
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template<typename U, bool V> requires V
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struct A<int>::B;
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// expected-error@-2 {{requires clause differs in template redeclaration}}
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template<>
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template<>
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struct A<int>::B<int, true>;
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template<>
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template<>
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struct A<void>::B<int, true>;
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template<>
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template<typename U, bool V> requires V
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struct A<int>::B<U*, V>;
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template<>
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template<typename U, bool V> requires V
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struct A<int>::B<U&, V>;
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// FIXME: This should be accepted.
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template<>
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template<D U>
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struct A<int>::C;
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// expected-error@-2 {{type constraint differs in template redeclaration}}
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template<>
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template<D U>
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struct A<int>::C<U*>;
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template<>
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template<D U>
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struct A<int>::C<U&>;
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// FIXME: This should be accepted.
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template<>
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template<typename U, bool V> requires V
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int A<long>::x;
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// expected-error@-2 {{requires clause differs in template redeclaration}}
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template<>
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template<>
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int A<long>::x<int, true>;
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template<>
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template<>
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int A<void>::x<int, true>;
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template<>
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template<typename U, bool V> requires V
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int A<long>::x<U*, V>;
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template<>
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template<typename U, bool V> requires V
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int A<long>::x<U&, V>;
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// FIXME: This should be accepted.
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template<>
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template<D U>
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int A<long>::y;
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// expected-error@-2 {{type constraint differs in template redeclaration}}
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template<>
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template<D U>
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int A<long>::y<U*>;
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template<>
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template<D U>
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int A<long>::y<U&>;
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