Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s // expected-no-diagnostics template<typename T> using U = T; // The name of the alias template is a template-name. U<char> x; void f(U<int>); typedef U<U<U<U<int>>>> I;