[gnutls-help] Bug#964284: Bug#964284: guile-gnutls: update to use guile 3.0
ametzler at bebt.de
Sat Jan 16 18:27:30 CET 2021
On 2020-12-30 Daiki Ueno <ueno at gnu.org> wrote:
> Ludovic Courtès <ludo at gnu.org> writes:
> > • In Guile-GnuTLS, arrange so that GnuTLS allocations are made through
> > libgc. Unfortunately, ‘gnutls_global_set_mem_functions’ was
> > deprecated in GnuTLS 3.3.0 so this doesn’t look like an option.
> GnuTLS doesn't call mp_set_memory_functions, so even if it is possible,
> I doubt that it would affect the current behavior. On the other hand,
> if GnuTLS (or Nettle) internally allocates an mpz_t, it should be done
> using the libgc-backed allocator set by Guile and the pointers should be
> reachable until it is no longer, if I understand correctly. Therefore,
> I suspect that there might be some code that confuses libgc to track the
> pointers; one thing that comes to my mind is a manual copy of mpz_t
> If you replace memcpy with mpz_init_set, does it work?
Stupid question: That suggestion is about using mpz_init_set instead of
memcpy for all of these initializations, not just for the specific one
in the specific function?
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