Re: gnupg-2.2.42-r2 [Was: Emacs master: Some tests are hanging.]

[Alan Mackenzie <acm@muc.de>]

Hello, Sam.

On Thu, Feb 15, 2024 at 21:40:17 +0000, Sam James wrote:

> Alan Mackenzie <acm@muc.de> writes:

> > Hello, Emacs.

> > On Thu, Feb 15, 2024 at 15:53:12 +0000, Alan Mackenzie wrote:
> >> With the Emacs master, updated today:

> >> On a Gentoo GNU/Linux system, when I do

> >>     make -j17 check

> >> , the tests don't finish.  This happens both on a Linux console and in X
> >> Windows on xfce-4-terminal.

> >> The tests which hang are
> >> (i) test/lisp/epg-tests.el (epg-roundtrip-1).
> >> (ii) test/lisp/gnus/mml-sec-tests.el (unknown sub-test).

> >> The hang in (i) is caused by a sub-process running gpg failing to
> >> finish, or to finish cleanly.


> We can try compare the output of the failing command with old/new, as
> fortunately for debugging, gpg's protocol is simple. See below but it's
> probably another subtle state machine change :(

> >> I have been seeing this for quite some time (?2 or 3 weeks at least), so
> >> it isn't anything which has just been committed.

> >> Before I raise a proper bug report, has anybody else experienced this?

> Can you CC me on anything you end up filing?

Yes, I'll do that.  Though I don't think I'll be raising an Emacs bug for
this, since the issue is already known.

> > Right after posting the original post, I tried going back to the
> > previous version of gnupg, namely gnupg-2.2.41.  All tests then worked
> > on master, with no hangs.

> > The version which doesn't work well together with Emacs is
> > gnupg-2.2.42-r2.  (I've a feeling that the "-r2" there is a purely
> > Gentoo label).

> Yeah, it's "ebuild revision".

OK, I didn't know that, thanks!

> > So it seems that some interface to gnupg has changed, possibly
> > unintentionally.

> > I don't know this part of Emacs at all well, that is gnupg and
> > sub-processes, so would anybody help me on sorting out what's going
> > wrong, here?  Thanks!

> Ugh. We previously had https://bugs.gentoo.org/907839 and
> https://dev.gnupg.org/T6481 but I wasn't aware of new issues again
> (AFAIK those issues only affected 2.4.x and we backported a fix for it
> in Gentoo).

As I said, I see the bug with gnupg-2.2.42-r2.  I can get by with 2.2.41
for now, until 2.4.4 gets stabilised in Gentoo.

-- 
Alan Mackenzie (Nuremberg, Germany).