Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

cxx-extern-c-array.cpp
// RUN: %clang_cc1 -fsyntax-only -verify %s
// expected-no-diagnostics

extern "C" int myarray[];
int myarray[12] = {0};

extern "C" int anotherarray[][3];
int anotherarray[2][3] = {1,2,3,4,5,6};