[debbugs-tracker] bug#31852: closed (Make memory-limit obsolete)

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Your message dated Sat, 16 Jun 2018 08:34:52 -0700
with message-id <address@hidden>
and subject line Re: bug#31852: Make memory-limit obsolete
has caused the debbugs.gnu.org bug report #31852,
regarding Make memory-limit obsolete
to be marked as done.

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31852: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=31852
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--- Begin Message --- Subject: Make memory-limit obsolete Date: Fri, 15 Jun 2018 18:33:47 -0700 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0

Tags: patch

The memory-limit function has an implementation that is a relic of long-ago days when the heap was allocated via sbrk. This assumption is often no longer true now that ASLR is popular, and once we get portable dumping work it'll be true even less often. Since memory-limit returns nonsense so often and since nobody cares, we can and should mark memory-limit as obsolete. On its way out we can move it to a Lisp implementation and cause it to be at least somewhat more plausible.

Proposed patches attached. The first patch moves memory-limit to Lisp, the second one marks it obsolete. I didn't know where to put the Lisp implementation so I put it into lisp/subr.el.

0001-Rewrite-memory-limit-in-Lisp.patch
Description: Text Data

0002-Obsolete-memory-limit.patch
Description: Text Data

--- End Message ---

> --- Begin Message ---
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> Subject: 
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> Re: bug#31852: Make memory-limit obsolete
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> Date: 
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> Sat, 16 Jun 2018 08:34:52 -0700
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> User-agent: 
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> Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0
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> Eli Zaretskii wrote:
>
> > If nobody uses the function, I see no gain at all, because obsoleting
> > a function tells those who use it not to.
>
> If Emacs has useless and confusing features that consume documentation space and 
> implementation resources, that is a net harm to current and future users. 
> Omitting such features is therefore a net gain to users. The benefit to users by 
> omitting useless and confusing features is worth the maintenance cost to us of 
> obsoleting these features.
>
> That being said, it appears I haven't convinced you to obsolete memory-limit, so 
> I installed patch 1 but not patch 2 and am closing the bug report.
>
>
> --- End Message ---