clang/test/SemaTemplate/PR77189.cpp

   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
  19 int main() {
  20     static constexpr int v = 42;
  21     static_assert(test<v, 0>::value);
  22 }