Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify @interface A @end void test_result_type() { auto l1 = [] () -> A { }; // expected-error{{interface type 'A' cannot be returned by value; did you forget * in 'A'?}} }