Re: master d582356: * src/fns.c (Frandom): Handle bignum `limit`s

[Eli Zaretskii]

> From: Pip Cet <pipcet@gmail.com>
> Date: Sun, 7 Mar 2021 14:21:51 +0000
> Cc: Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org
> 
> > > > I don't think I understand how will we know which function says it
> > > > never calls GC.
> > >
> > > By tagging it in the source code?
> >
> > How do you know which functions to tag?
> 
> That's the part I wasn't volunteering for :-) We'd have to do that
> manually, but we wouldn't have to do it all at once.

I don't see how we can do that, without some methodical procedure.

> > How do you know in which functions to add DONT_CALL_GC ?
> 
> That's not something we can decide automatically, is it?

No, I don't think so.

> But usually there will already be a comment in those functions
> explaining that they must not call GC, right?

No, I think these are rare exceptions rather than the rule.