bug#29661: 27.0.50; emacs crashing on exchange-point-and-mark

[Robert Marshall]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Robert Marshall <robert.marshall@codethink.co.uk>
>> Date: Thu, 14 Dec 2017 08:35:21 +0000
>> Cc: 29661@debbugs.gnu.org
>> 
>> I assume the windows failure to crash is because there isn't an X failure.
>
> Do you perhaps have some utility installed that attempts to manage the
> X clipboard and selections?  If so, can you disable it and see if the
> problem goes away?
>
> Basically, the question is why does X fail or close the connection
> with Emacs.

I'm running the standard kde desktop which comes with klipper. If I
stop klipper - at the moment! - I can no longer replicate the error

When running klipper from the command line and replicating the problem I
see

QClipboardWatcher::empty: Internal error: Application owns the selection

Robert