| // RUN: %clang_cc1 -verify -std=c++20 -fsyntax-only %s |
| |
| auto c1(auto f, auto ...fs) { |
| constexpr bool a = true; |
| return [](auto) requires a { |
| constexpr bool b = true; |
| return []() requires a && b { |
| constexpr bool c = true; |
| return [](auto) requires a && b && c { |
| constexpr bool d = true; |
| // expected-note@+2{{because substituted constraint expression is ill-formed: no matching function for call to 'c1'}} |
| // expected-note@+1{{candidate function not viable: constraints not satisfied}} |
| return []() requires a && b && c && d && (c1(fs...)) {}; |
| }; |
| }(); |
| }(1); |
| } |
| |
| void foo() { |
| c1(true)(1.0)(); // expected-error{{no matching function for call to object of type}} |
| } |
