Re: When should ralloc.c be used?

[Paul Eggert]

> > >    . Build with gmalloc but without ralloc.
> >
> > This goes back to what we were doing, no?
>
> No, we were using the glibc malloc, AFAIK.  Or am I missing something?

No you're right, I was sloppy.

> > How about the attached patch for emacs-25? Basically, it says "use
> > ralloc.c only if requested via './configure REL_ALLOC=yes'".
>
> LGTM.  Should we wait for people to build with REL_ALLOC=no manually,
> to see if there are any problems, or should we push this right away?

I doubt whether many more people will build with REL_ALLOC=no. So I think we 
should push it into emacs-25. Proposed patch attached. I have tested this on 
Fedora 24 x86-64 and Ubuntu 16.04 x86-64 with './configure 
emacs_cv_var_doug_lea_malloc=no' to simulate bleeding-edge glibc.

0001-Default-REL_ALLOC-to-no.patch
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