bug#29170: 26.0.90; Emacs freezes when capturing an org-template

[Grégoire Jadi]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Grégoire Jadi <gjadi@omecha.info> writes:
>
>> So we think it is safe to backport this change upstream.
>
> [...]
>
>>    dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
>> -  hpux* | nacl | openbsd | solaris | unixware )
>> +  hpux* | nacl | solaris | unixware )
>
> Thanks; I've now applied this to Emacs 28.

Thanks !

>
>> Please note that the real issue is not fixed.  The issue is in the
>> broken SIGIO code itself.  I was able to reproduce the bug by enabling
>> emacs_broken_SIGIO on Ubuntu LTS 20.04.  I didn't take the time to find
>> a fix though.
>
> The remaining operating systems that uses the broken_SIGIO code paths
> are pretty obscure -- I guess Solaris is still used to some degree.
>
> Hm, let's see...  I guess the code paths that are exercised are the ones
> where USABLE_SIGIO is undefined?  Do you have a simple test case for
> this (on Ubuntu, for instance)?  I think it might make sense to open a
> new bug report for this.

Yes, the same snippet used to trigger the bug on OpenBSD can be used:

> (let ((value 'SECONDARY)
>       (x-selection-timeout 2000))
>   ;;; from org-get-x-clipboard in lisp/org-compat.el
>   (gui-get-selection value 'UTF8_STRING)
>   (gui-get-selection value 'COMPOUND_TEXT)
>   (gui-get-selection value 'STRING)
>   (gui-get-selection value 'TEXT))


Best regards,

-- 
gjadi
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