Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

instantiate-friend-class.cpp
// RUN: %clang_cc1 -fsyntax-only -verify %s
// expected-no-diagnostics
// PR4794

template <class T> class X
{
  friend class Y;
};
X<int> y;