17 lines · cpp
1// RUN: %clang_cc1 -std=c++20 -fsyntax-only -verify %s2// expected-no-diagnostics3 4template<typename T> concept C = true;5 6struct A {7 template<C T> void f();8};9 10auto L = []<C T>{};11 12template<typename X>13class Friends {14 template<C T> friend void A::f();15 template<C T> friend void decltype(L)::operator()();16};17