| // RUN: %clang_cc1 -std=c++2a -x c++ -verify %s |
| |
| template<typename T> requires (sizeof(T) >= 4) |
| // expected-note@-1{{similar constraint expressions not considered equivalent}} |
| bool a = false; // expected-note{{template is declared here}} |
| |
| template<typename T> requires (sizeof(T) >= 4 && sizeof(T) <= 10) |
| // expected-note@-1{{similar constraint expression here}} |
| bool a<T> = true; // expected-error{{variable template partial specialization is not more specialized than the primary template}} |
| |
| template<typename T> |
| concept C1 = sizeof(T) >= 4; |
| |
| template<typename T> requires C1<T> |
| bool b = false; |
| |
| template<typename T> requires (C1<T> && sizeof(T) <= 10) |
| bool b<T> = true; |
| |
| template<typename T> |
| concept C2 = sizeof(T) > 1 && sizeof(T) <= 8; |
| |
| template<typename T> |
| bool c = false; |
| |
| template<typename T> requires C1<T> |
| bool c<T> = true; |
| |
| template<typename T> |
| bool d = false; |
| |
| template<typename T> |
| 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}} |
| |
| template<typename T> requires C1<T> |
| bool e = false; |
| |
| template<typename T> |
| 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}} |
| |
| template<typename T> |
| constexpr int f = 1; |
| |
| template<typename T> requires C1<T> && C2<T> |
| constexpr int f<T> = 2; |
| |
| template<typename T> requires C1<T> || C2<T> |
| constexpr int f<T> = 3; |
| |
| static_assert(f<unsigned> == 2); |
| static_assert(f<char[10]> == 3); |
| static_assert(f<char> == 1); |
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