Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: cp %s %t.extrasuffix // RUN: %clang_cc1 -fixit=fixed -x c %t.extrasuffix // RUN: %clang_cc1 -Werror -pedantic -x c %t.fixed.extrasuffix _Complex cd;