| // RUN: %clang_cc1 -std=c++20 -fsyntax-only -verify %s | |
| export module m3; | |
| export template <class> struct X { | |
| template <class Self> friend void f(Self &&self) { | |
| (Self&)self; // expected-warning {{expression result unused}} | |
| } | |
| }; | |
| void g() { f(X<void>{}); } // expected-note {{in instantiation of function template specialization}} |