Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 %s -triple %itanium_abi_triple -emit-llvm-only // PR6294 class A { public: virtual ~A(); }; class B { class C; }; class B::C : public A { C(); }; B::C::C() {}