1 // RUN: %clang_cc1 -fsyntax-only -std=c++17 -verify %s 2 // RUN: %clang_cc1 -fsyntax-only -std=c++20 -verify %s 3 // expected-no-diagnostics 4 5 struct false_type { 6 static constexpr bool value = false; 7 }; 8 9 struct true_type { 10 static constexpr bool value = true; 11 }; 12 13 template <auto& Value, int> 14 struct test : false_type {}; 15 16 template <auto& Value> 17 struct test<Value, 0> : true_type {}; 18 main()19int main() { 20 static constexpr int v = 42; 21 static_assert(test<v, 0>::value); 22 } 23