Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

debug-info-wchar.cpp
// RUN: %clang_cc1 -emit-llvm -debug-info-kind=limited %s -o -| FileCheck %s
void foo() {
// CHECK: !DIBasicType(name: "wchar_t"
  const wchar_t w = L'x';
}