GNU bug report logs - #23529
Request for fixing randomize_va_space build issues

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Package: emacs;

Reported by: Philippe Vaucher <philippe.vaucher <at> gmail.com>

Date: Fri, 13 May 2016 12:20:02 UTC

Severity: important

Tags: fixed

Merged with 13964

Found in version 24.3

Fixed in version 27.1

Done: Stefan Kangas <stefan <at> marxist.se>

Bug is archived. No further changes may be made.

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: p.stephani2 <at> gmail.com, philippe.vaucher <at> gmail.com, 23529 <at> debbugs.gnu.org
Subject: bug#23529: Request for fixing randomize_va_space build issues
Date: Wed, 7 Sep 2016 09:11:31 -0700

Eli Zaretskii wrote:

>> The compiler-based approach should be simpler and more portable than
>> messing with low-level binary I/O.
>
> You mean, 'read' and 'write'?

I meant all the other stuff associated with the I/O.

>> Another example: on hardened platforms with PIEs
>> (position-independent executables), you get a PIE for free as the
>> dumped executable, instead of having to disable PIE as we do now.
>
> I'm not sure how PIE is relevant: the stuff we dump, and need to load
> into a running Emacs, is data, not code.  What am I missing?

PIE can relocate data as well as code. And with modules, we also have code to dump.
This bug report was last modified 5 years and 310 days ago.

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