Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -std=c++11 -fsyntax-only %s constexpr unsigned oddfac(unsigned n) { return n == 1 ? 1 : n * oddfac(n-2); } constexpr unsigned k = oddfac(123); using A = int[k % 256]; using A = int[43];