Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -x objective-c %s -fsyntax-only -verify // expected-no-diagnostics // rdar://9362887 typedef __typeof__(((int*)0)-((int*)0)) ptrdiff_t; extern id objc_assign_ivar(id value, id dest, ptrdiff_t offset);