Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// Based on C++20 10.2 example 3. // RUN: %clang_cc1 -std=c++20 -emit-module-interface %s -o %t export module M; struct S; export using T = S; // OK, exports name T denoting type S // expected-no-diagnostics