Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -rewrite-objc -fobjc-runtime=macosx-fragile-10.5 %s -o - @implementation Intf { id ivar; id ivar1[12]; id **ivar3; id (*ivar4) (id, id); } @end