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Re: Removal of unexec support from glibc malloc

From: Paul Eggert <eggert at cs dot ucla dot edu>
To: Florian Weimer <fweimer at redhat dot com>
Cc: Eli Zaretskii <eliz at gnu dot org>, Emacs-devel at gnu dot org, GNU C Library <libc-alpha at sourceware dot org>
Date: Sat, 30 Jan 2016 01:38:18 -0800
Subject: Re: Removal of unexec support from glibc malloc
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References: <569CDB81 dot 6040600 at redhat dot com> <569D3BE0 dot 6050103 at cs dot ucla dot edu> <m2a8o2vg5x dot fsf at newartisans dot com> <569D4207 dot 4060209 at cs dot ucla dot edu> <83mvs2d5b2 dot fsf at gnu dot org> <858u3meiv1 dot fsf at iznogoud dot viz> <569D6A3E dot 2010009 at cs dot ucla dot edu> <569D73D7 dot 1080206 at redhat dot com> <569DD82B dot 20201 at cs dot ucla dot edu>

Paul Eggert wrote:

I'll test this more, and if it doesn't have problems then we can declare the
issue resolved, from glibc's point of view anyway.

I simulated building current Emacs on future glibc by running './configureemacs_cv_var_doug_lea_malloc=no', which tells 'configure' to assume that the Clibrary does not have the GNU malloc extensions. Although the code still seemedto work, there were some compile-time errors that suggested trouble; forexample, glibc's API for the malloc hooks disagree with Emacs's replacement. Tofix this I would like to install the set of patches discussed for Bug#22086, here:


http://bugs.gnu.org/22086#104

References:
- Re: Removal of unexec support from glibc malloc
  - From: Paul Eggert
- Re: Removal of unexec support from glibc malloc
  - From: John Wiegley
- Re: Removal of unexec support from glibc malloc
  - From: Paul Eggert
- Re: Removal of unexec support from glibc malloc
  - From: Paul Eggert

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