Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

t3.cpp
// This tests whether the global module would be created when the program don't declare it explicitly.
// RUN: %clang_cc1 -std=c++20 %s -verify
// expected-no-diagnostics
export module x;

extern "C" void foo();
extern "C++" class CPP {};