bug#41404: Crash "Too many root sets" when executing code from stdin in elisp mode

[Ricardo Wurmus]

Vasilij Schneidermann <address@hidden> writes:

> The attached reproducer script requires Emacs and Guile.  When running it, the
> REPL prints out many lines, the last ones being:
>
>     $1884 = #f
>     $1885 = #f
>     $1886 = #f
>     $1887 = #f
>     $1888 = #f
>     $1889 = #f
>     $1890 = #f
>     $1891 = #f
>     $1892 = #f
>     Too many root sets
>     ./repro.sh: line 11:  2014 Aborted (core dumped) guile --language=elisp < 
> elisp-spec.el
>
> This happens both for Guile 2.2.6 on Arch and Guile 3.0.2 on Debian Sid,
> launched with `docker run --rm -i -t debian:sid bash`.

I can reproduce this on the wip-elisp branch as well.

-- 
Ricardo