Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

2008-05-07-CrazyOffsetOf.cpp
// RUN: %clang_cc1 -triple=x86_64-unknown-linux -emit-llvm %s -o - | FileCheck %s
// rdar://5914926

struct bork {
  struct bork *next_local;
  char * query;
};
int offset =  (char *) &(((struct bork *) 0x10)->query) - (char *) 0x10;
// CHECK: @offset = global i32 8, align 4