[Bug gdb/27710] remote-notif.c:113: internal-error: void remote_async_get_pending_events_handler(gdb_client_data): Assertion `target_is_non_stop_p ()' failed

["simark at simark dot ca" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=27710

--- Comment #10 from Simon Marchi <simark at simark dot ca> ---
(In reply to Tom de Vries from comment #5)
> We have:
> ...
> bool
> target_can_async_p ()
> {
>   return current_inferior ()->top_target ()->can_async_p ();
> }
> ...
> 
> AFAIU, current_inferior ()->top_target () translates to:
> ...
> (gdb) p
> current_inferior_.m_obj.m_target_stack.m_stack[current_inferior_.m_obj.
> m_target_stack.m_top]
> $16 = (target_ops *) 0x16c6cd0 <exec_ops>
> ...
> 
> Exec_ops has type exec_target, which subclasses target_ops without
> implementing a can_async_p override, so we have the default:
> ...
>     virtual bool can_async_p ()
>       TARGET_DEFAULT_RETURN (false);
> ...

Since the test is related to multi-inferior, my first question would be, is the
current inferior the right one (one that belongs to the remote target receiving
the notification)?

We have the remote target in notif_state->remote_target, so maybe we need to
switch to it before calling target_is_non_stop_p.  From a quick look, it
doesn't seem like remote_notif_process cares about the current inferior though.

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