[PATCH 02/16] libelf: Make elf_version thread-safe

[Mark Wielaard]

Hi Heather,

On Tue, Oct 17, 2023 at 02:05:58PM -0500, Heather McIntyre wrote:
> John and I discussed that atomic_compare_exchange_strong could have been
> used here. I see that this has been pushed to the main branch, but I can
> make the change to the atomic operation if you think that is a better
> option.

It probably doesn't matter for this function since it isn't used
often. I was just wondering whether you thought of using atomics here
since there are really just two states here (__libelf_version ==
EV_NONE or __libelf_version == EV_CURRENT).

I do have one question though. __libelf_version is checked in
elf_begin. Should that check be guarded by a lock too?

Thanks,

Mark