Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

recursive_visibility.mm
// RUN: rm -rf %t
// RUN: %clang_cc1 -x objective-c++ -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs %s -verify -std=c++11

// expected-no-diagnostics

@import recursive_visibility_c;

template<typename T> struct Z { typedef T type; };
template void g<Z>();