bug#47761: Guile Segfaulting on guix build -f

[Julien Lepiller <julien@lepiller.eu>]

Le Tue, 13 Apr 2021 23:36:40 +0200,
Nicolò Balzarotti <anothersms@gmail.com> a écrit :

> Hi guix!
> 
> A package definition that used to build fine, recently (don't know
> exactly when) started failing, with guile segfaulting.
> 
> After removing a few things, it seems that the MWE is this:
> 
> echo '(use-modules (guix git-download)) (git-predicate "repo")'>m.scm
> mkdir repo
> guix build -f m.scm
> Segmentation fault
> 
> guix describe:
> 
> guix 2a62425
>    repository URL: https://git.savannah.gnu.org/git/guix.git
>    branch: master
>    commit: 2a624253bc55e2a94f6581d6e790303575436c96
> 
> One of the two computers provides substitute to the other, so maybe my
> guile is somehow damaged?  Can any of you reproduce it?
> 
> Thanks, Nicolò
> 
> 
> 

I can reproduce the segfault when "repo" is a directory that exists
(seems to be independent from content, I can reproduce with an empty
directory and an actually git repository), from guix repl:

scheme@(guix-user)> (use-modules (guix git-download))
scheme@(guix-user)> (git-predicate "repo")
Erreur de segmentation