Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

PR5834-constructor-conversion.cpp
// RUN: %clang_cc1 -emit-llvm -o - %s

// PR5834
struct ASTMultiMover {};
struct ASTMultiPtr {
  ASTMultiPtr();
  ASTMultiPtr(ASTMultiPtr&);
  ASTMultiPtr(ASTMultiMover mover);
  operator ASTMultiMover();
};
void f1() {
  extern void f0(ASTMultiPtr);
  f0(ASTMultiPtr());
}