Re: Errors building from master with a clean repository

[Eli Zaretskii]

> Cc: address@hidden, address@hidden
> From: Paul Eggert <address@hidden>
> Date: Mon, 22 Apr 2019 17:31:44 -0700
> 
> No, I was merely assuming that -gdwarf-4 is good enough to debug Emacs;
> -gdwarf-5 is still marked as "experimental" in GCC 8's doc, and I
> haven't used -gdwarf-5. If there's a significant advantage to using
> -gdwarf-5 then discussion of it should be added to etc/DEBUG. In the
> meantime I tried to improve the wording about this, in the attached patch.
> 
> 
> > I think this section could greatly benefit from a short explanation
> > what "undefined behavior" means, or a couple of examples of it.
> 
> It's hard to be brief as -fsanitize=undefined is a bit tricky, but I
> took a shot at it by installing the attached.

Thanks, these are very useful additions, IMO.