Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
; RUN: not llvm-link %s %p/unnamed-addr-err-b.ll -S -o - 2>&1 | FileCheck %s @foo = appending unnamed_addr global [1 x i32] [i32 42] ; CHECK: Appending variables with different unnamed_addr need to be linked