forked from OSchip/llvm-project
71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
// RUN: %clang_cc1 -std=c++2a -x c++ -verify %s
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template<typename T> requires (sizeof(T) >= 4)
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// expected-note@-1{{similar constraint expressions not considered equivalent}}
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bool a = false; // expected-note{{template is declared here}}
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template<typename T> requires (sizeof(T) >= 4 && sizeof(T) <= 10)
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// expected-note@-1{{similar constraint expression here}}
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bool a<T> = true; // expected-error{{variable template partial specialization is not more specialized than the primary template}}
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template<typename T>
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concept C1 = sizeof(T) >= 4;
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template<typename T> requires C1<T>
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bool b = false;
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template<typename T> requires (C1<T> && sizeof(T) <= 10)
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bool b<T> = true;
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template<typename T>
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concept C2 = sizeof(T) > 1 && sizeof(T) <= 8;
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template<typename T>
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bool c = false;
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template<typename T> requires C1<T>
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bool c<T> = true;
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template<typename T>
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bool d = false;
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template<typename T>
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bool d<T> = true; // expected-error{{variable template partial specialization does not specialize any template argument; to define the primary template, remove the template argument list}}
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template<typename T> requires C1<T>
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bool e = false;
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template<typename T>
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bool e<T> = true; // expected-error{{variable template partial specialization does not specialize any template argument; to define the primary template, remove the template argument list}}
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template<typename T>
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constexpr int f = 1;
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template<typename T> requires C1<T> && C2<T>
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constexpr int f<T> = 2;
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template<typename T> requires C1<T> || C2<T>
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constexpr int f<T> = 3;
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static_assert(f<unsigned> == 2);
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static_assert(f<char[10]> == 3);
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static_assert(f<char> == 1);
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template <int I>
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struct S {
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template <typename T>
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static constexpr int f = 1;
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template <typename T>
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requires C1<T> && C2<T>
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static constexpr int f<T> = 2;
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template <typename T>
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requires C1<T> || C2<T>
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static constexpr int f<T> = 3;
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};
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static_assert(S<1>::f<unsigned> == 2);
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static_assert(S<1>::f<char[10]> == 3);
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static_assert(S<1>::f<char> == 1);
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