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 */ # define XRECORD(x, c_name) e##c (x, __LINE__) int ec(int, int); void x(void) { XRECORD (XRECORD (1, 1), 1); }