Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

threadsafe-statics.clcpp
// RUN: %clang -### -c -DNO_THREADSAFE_STATICS %s 2>&1 | FileCheck --check-prefix=CHECK-NO-THREADSAFE-STATICS %s
// RUN: %clang -### -fno-threadsafe-statics -DNO_THREADSAFE_STATICS -c %s 2>&1 | FileCheck --check-prefix=CHECK-NO-THREADSAFE-STATICS %s

// CHECK-NO-THREADSAFE-STATICS: "-cc1"
// CHECK-NO-THREADSAFE-STATICS: "-fno-threadsafe-statics"
// CHECK-NO-THREADSAFE-STATICS-NOT: "-fthreadsafe-statics"

// RUN: %clang -### -fthreadsafe-statics -DTHREADSAFE_STATICS -c %s 2>&1 | FileCheck --check-prefix=CHECK-THREADSAFE-STATICS %s

// CHECK-THREADSAFE-STATICS: "-cc1"
// CHECK-THREADSAFE-STATICS-NOT: "-fno-threadsafe-statics"