On 10/19/2017 02:39 PM, Pedro Alves wrote:

> No good reason.  Sounds like you found a bug.

Currently gdbserver installs SIGIO handler just once, in initialize_async_io ()
called from captured_main (), and this handler is removed when remote_desc
is closed in remote_close (). Next, when a new instance of remote_desc is
fetched from accept () and has '\003' arrived, input_interrupt () is never
called because it is not registered as SIGIO handler.

Probably the fix is to (re)install SIGIO handler each time when a new
async-served descriptor gets hooked into an event loop, for example,
in enable_async_notification ().

Dmitry