gdb in non-stop/sync mode connects to gdbserver

[Yao Qi]

On 11/23/2012 02:16 AM, Pedro Alves wrote:
> "non-stop and sync mode" is really not supported.  non-stop is defined to
> work only with async on.  There are many such assumptions in the code.  That the
> test works in sync mode on native is just an accident.

I had a vague impression that "non-stop" works on top of async mode 
before.  However, I was misled by the code that 'target_can_async_p' is 
checked on 'non-stop' path, and accordingly think "non-stop may work on 
sync mode".  Anyway, thanks for confirming this.

-- 
Yao (齐尧)