clang/test/SemaTemplate/GH75426.cpp

   1 // RUN: %clang_cc1 -std=c++20 -fsyntax-only -verify %s
   2 // expected-no-diagnostics
   3
   4 template<typename T> concept C = true;
   5
   6 struct A {
   7     template<C T> void f();
   8 };
   9
  10 auto L = []<C T>{};
  11
  12 template<typename X>
  13 class Friends {
  14     template<C T> friend void A::f();
  15     template<C T> friend void decltype(L)::operator()();
  16 };