Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -fsyntax-only -verify %s // expected-no-diagnostics @protocol fproto @end @protocol p1 @end @class cl; int main(void) { Protocol *proto = @protocol(p1); Protocol *fproto = @protocol(fproto); }