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Re: dejagnu version update?

From: Rainer Orth
Subject: Re: dejagnu version update?
Date: Thu, 14 May 2020 16:08:50 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (usg-unix-v)

Hi Maciej,

> On Wed, 13 May 2020, Rainer Orth wrote:
>> > I'm in favour of requiring 1.5.3 or later, so 1.6 would be OK for me.
>> If we go beyond 1.5.x, we need to go all the way up to 1.6.2: 1.6 and
>> 1.6.1 have an ugly bug that can miss timeouts, causing tests to hang
>> indefinitely until one manually kills them.
>  Would you mind sharing a reference such as a DejaGNU Git commit ID of the 
> fix for the bug you mean?
>  Versions 1.6 and 1.6.1 seem ubiquitous and coincidentally earlier this 
> very week I have been chasing a phenomenon with Expect's `wait' semantics 
> causing a reliable hang in remote testing if `ssh' to the target board 
> stops responding for whatever reason.  I have come up with a solution 
> (that I'd be happy to upstream, except that DejaGNU maintenance seems to 
> have been dead for like a year now), which I have also confirmed to be 
> required with current DejaGNU Git master so it must be a different one, 
> and I would like to know how it might be related to the bug you mention.

I believe it's

commit b4e61f85ae26d215e8ad5d6e9fcda6c0745096a1
Author: Richard Biener <address@hidden>
Date:   Fri Jul 6 21:35:29 2018 +1000

            * lib/remote.exp (close_wait_program): Use separate kill command
            for each pid.

Richard pointed me at the 1.6.2 release when I mentioned the issue
somewhere on a gcc list, and it's his patch, so it's likely to be the

It went into DejaGnu immediately after the 1.6.1. release ;-(


Rainer Orth, Center for Biotechnology, Bielefeld University

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