Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
RUN: llvm-cxxfilt -n < %s | FileCheck --match-full-lines %s ; Full test suite for dlang demangling at ; llvm/unittests/Demangle/DLangDemangleTest.cpp CHECK: D main _Dmain CHECK: _DDD _DDD