Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -std=c++11 -verify %s -Wno-tautological-compare template <typename T> void f(void(*pf)(), T(*ptf)(T)) { (void)*pf; (void)*ptf; } // expected-no-diagnostics