Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

objc2-warn-weak-decl.m
// RUN: %clang_cc1 -triple i386-apple-darwin9 -fsyntax-only -fobjc-gc -verify %s
// RUN: %clang_cc1 -x objective-c++ -triple i386-apple-darwin9 -fsyntax-only -fobjc-gc -verify %s
struct S {
	__weak id  p;  // expected-warning {{__weak attribute cannot be specified on a field declaration}}
};

int main (void)
{
  __weak id  local;  // expected-warning {{Objective-C GC does not allow weak variables on the stack}}
}