Re: Some experience with the igc branch

[Stefan Kangas]

Pip Cet via "Emacs development discussions." <emacs-devel@gnu.org>
writes:

>> I think that's already true for the old GC. There is nothing
>> guaranteeing that the contents of the binding stack is consistent, for
>> example. But we get away with it well enough that the profiler is
>> useful.
>
> My understanding is that was true at one point, before C caught up to
> memory ordering between a thread and its signal handlers, but with C11,
> we have everything we need to ensure consistency, at least on systems
> that store words atomically (we don't use memcpy for modifying the
> specpdl stack).

Which parts of C11 help us?

I'm probably missing something obvious, but aren't we using C99 on the
scratch/igc branch also?