Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 %s -emit-llvm -o - typedef double Al1Double __attribute__((aligned(1))); struct x { int a:23; Al1Double v; }; struct x X = { 5, 3.0 }; double foo(void) { return X.v; }