Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

i386-linux-android.c
// RUN: %clang_cc1 -triple i386-linux-android -fsyntax-only -verify %s
// expected-no-diagnostics

extern int a1_0[sizeof(long double) == 8 ? 1 : -1];
extern int a1_i[__alignof(long double) == 4 ? 1 : -1];