Re: G-Golf - Callback segmentation fault

[Matija Obid <matija.obid@posteo.net>]

Hello David,

> So your patch seems to point to a problem in the upstream definition of
> the (most recent) g-callable-info-create-closure, which is the one
> everybody who's using GI >= 1.71.0 should use ...

I see. The comment in deprecated function made me thinking and I found
notice in LFS [1]:
> --disable-exec-static-tramp
>     Disable static trampoline support. It's a new security feature in
>     libffi, but some BLFS packages (notably GJS and
>     gobject-introspection) have not been adapted for it. 

This flag was recently removed [2] in nixpkgs with a comment:
> The fix for gobject-introspection is in version 1.72.

Bottom line: If I compile Guile with patched libffi [3] dependency
(where flag "disable-exec-static-tramp" is present) problematic examples
are working (without patched G-Golf).


> Do you (or anyone else interested ofc) have an idea of why would
> g-callable-info-create-closure perfectly create a closure pointer on
> debian, and not on guix/nix? Here is the upstream code def [2]

Most probably has Debian present flag "disable-exec-static-tramp" when
configuring libffi. Where can we check that?

I still wonder where is the problem, in Guile, G-Golf or
gobject-introspection (which according to [2] should not be a problem).


[1] https://www.linuxfromscratch.org/~xry111/lfs-cross-la/view/systemd/chapter08/libffi.html
[2] https://github.com/NixOS/nixpkgs/pull/257742
[3] Libffi is used in a lot of packages. I patch it only for Guile.

-- 
Regards,
Matija