bug#41158: `guix` command segfaults after doing Ctrl-C during a frozen `guix pull`

[JoJo]

Sorry, but I changed distro to Arch again some months ago for the time
being, so I can't reproduce this.

Johan

On tor, okt 29 2020, zimoun wrote:

> Dear,
>
> Thank you for the report.
>
> On Sat, 09 May 2020 at 20:38, JoJo <jo@jo.zone> wrote:
>> Due to an unrelated issue, I was updating my system with `guix
>> pull`. During update, the process seemed to freeze / get stuck. My
>> system was responsive and all, but the `guix pull` output was stuck. I
>> don't remember what the last line in the output was, but after
>> studying the output of an application of
>> `/run/current-system/profile/bin/guix`, I think the output stuck at
>> the last step, "building profile with 1 package...". It definitely
>> said something about "profile" and "1 package" at least. I don't know
>> what caused the freeze. A casual guess is that it's related to my
>> screen blanking and the screen locker (`slock`) activatin due to no
>> input for a while.
>
> Hum?  Weird…
>
>> Anyways, I decided to end the apparently frozen command, so I killed
>> it with Ctrl-C. Immediately afterwards when trying to `guix pull`
>> another time, `guix` just started segfaulting. Doesn't matter what
>> subcommand I try, or if I call `guix` with no subbcommand -- it just
>> segfaults in either case.
>>
>> ```
>> jojo@astoria ~$ guix pull
>> Segmentation fault
>> jojo@astoria ~$ guix
>> Segmentation fault
>> jojo@astoria ~$ guix show
>> Segmentation fault
>> ```
>
> What do these commands
>
>    /run/current-system/profile/bin/guix pull -p ~/.config/guix/current
>    guix pull
>
> do?
>
>
>
> All the best,
> simon