Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -fsyntax-only -verify -std=c2x %s // expected-no-diagnostics // FIXME: Test the correct value once C23 ships. _Static_assert(__STDC_VERSION__ > 201710L, "Incorrect __STDC_VERSION__");