From: Paul Eggert <eggert@cs.ucla.edu>
To: Eli Zaretskii <eliz@gnu.org>
Cc: p.stephani2@gmail.com, philippe.vaucher@gmail.com, 23529@debbugs.gnu.org
Subject: bug#23529: Request for fixing randomize_va_space build issues
Date: Sat, 10 Sep 2016 16:01:28 -0700 [thread overview]
Message-ID: <24612cc1-cb72-511f-7d52-bb62101906ae@cs.ucla.edu> (raw)
In-Reply-To: <83k2ek83b7.fsf@gnu.org>
Eli Zaretskii wrote:
> Conservative stack marking is for Lisp objects held in variables on
> the stack. Those objects cannot be relevant to dumping
Yes, but the conservativeness of the marking phase means Emacs cannot relocate
objects. This is true regardless of whether the objects-that-can't-be-moved
reside on the stack or on the heap.
> If mainline libc allows such control on its memory
> allocation back-end, it is better to use that than rely on our own
> replacement allocator.
Although that might be better than what we're doing, better yet would be to not
fiddle with such internal details of malloc at all.
> What about disabling randomization for the temacs run?
That is yet another low-level thing to configure, and to get right in new ports.
The approach I'm suggesting does not rely on disabling randomization.
> I don't think we do that in code that runs in temacs.
This point is a tangent to its containing thread, as the thread in question is
about whether compilers and linkers can relocate pointers for us. The code
example establishes that compilers and linkers can do so, regardless of whether
Emacs is using that capability now.
next prev parent reply other threads:[~2016-09-10 23:01 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-13 12:18 bug#23529: Request for fixing randomize_va_space build issues Philippe Vaucher
2016-05-13 15:58 ` Paul Eggert
2016-05-17 16:38 ` Philippe Vaucher
2016-05-18 7:53 ` Philippe Vaucher
2016-05-18 8:21 ` Paul Eggert
2016-05-18 8:44 ` Philippe Vaucher
2016-05-20 17:52 ` Paul Eggert
2016-09-06 9:22 ` Philipp Stephani
2016-09-06 17:21 ` Paul Eggert
2016-09-06 17:40 ` Eli Zaretskii
2016-09-06 17:46 ` Philippe Vaucher
2016-09-06 17:55 ` Philipp Stephani
2016-09-06 18:04 ` Eli Zaretskii
2016-09-06 17:59 ` Eli Zaretskii
2016-09-06 18:03 ` Philipp Stephani
2016-09-06 18:32 ` Eli Zaretskii
2016-09-06 19:01 ` Philipp Stephani
2016-09-06 18:24 ` Philippe Vaucher
2016-09-06 19:11 ` Eli Zaretskii
2016-09-06 18:18 ` Clément Pit--Claudel
2016-09-06 19:09 ` Eli Zaretskii
2016-09-06 19:59 ` Clément Pit--Claudel
2016-09-06 18:44 ` Paul Eggert
2016-09-06 19:18 ` Eli Zaretskii
2016-09-06 20:37 ` Paul Eggert
2016-09-07 7:12 ` Philippe Vaucher
2016-09-07 7:40 ` Paul Eggert
2016-09-07 11:01 ` Philipp Stephani
2016-09-07 14:21 ` Eli Zaretskii
2016-09-07 16:11 ` Paul Eggert
2016-09-07 17:10 ` Eli Zaretskii
2016-09-07 17:40 ` Paul Eggert
2016-09-07 18:11 ` Eli Zaretskii
2016-09-07 20:12 ` Paul Eggert
2016-09-09 5:40 ` Eli Zaretskii
2016-09-09 7:10 ` Paul Eggert
2016-09-09 7:50 ` Eli Zaretskii
2016-09-09 8:54 ` Paul Eggert
2016-09-09 9:09 ` Eli Zaretskii
2016-09-09 16:16 ` Paul Eggert
2016-09-09 18:45 ` Eli Zaretskii
2016-09-09 19:59 ` Paul Eggert
2016-09-10 6:06 ` Eli Zaretskii
2016-09-10 7:52 ` Paul Eggert
2016-09-10 10:19 ` Eli Zaretskii
2016-09-10 23:01 ` Paul Eggert [this message]
2016-09-11 15:23 ` Eli Zaretskii
2016-09-11 16:59 ` Paul Eggert
2016-09-11 17:19 ` Eli Zaretskii
2016-09-11 19:32 ` Philippe Vaucher
2016-09-12 2:30 ` Eli Zaretskii
2016-09-12 2:58 ` Clément Pit--Claudel
2016-09-12 6:09 ` Philipp Stephani
2016-09-12 17:04 ` Eli Zaretskii
2016-09-12 14:10 ` Philippe Vaucher
2016-09-12 14:18 ` Philippe Vaucher
2016-09-13 14:47 ` Eli Zaretskii
2016-09-13 15:21 ` Philippe Vaucher
2016-09-13 15:55 ` Eli Zaretskii
2016-09-13 15:51 ` Paul Eggert
2016-09-13 19:24 ` Eli Zaretskii
2016-09-09 20:00 ` Philippe Vaucher
2016-09-10 6:13 ` Eli Zaretskii
2016-09-09 18:29 ` Andreas Schwab
2016-09-09 18:56 ` Eli Zaretskii
-- strict thread matches above, loose matches on Subject: below --
2019-09-14 4:18 bug#13964: " Stefan Kangas
2019-09-14 8:52 ` Philippe Vaucher
2019-09-14 10:39 ` Stefan Kangas
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