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 struct A{}; template <typename T> void f(int* pi, A* pa, T* pt) { (void)+pi; (void)+pa; (void)+pt; } // expected-no-diagnostics