From: Florian Weimer <fweimer@redhat.com>
To: Joseph Myers <joseph@codesourcery.com>
Cc: Daniel Colascione <dancol@dancol.org>,
Zack Weinberg <zackw@panix.com>,
emacs-devel@gnu.org, GNU C Library <libc-alpha@sourceware.org>
Subject: Re: Removal of unexec support from glibc malloc
Date: Tue, 19 Jan 2016 00:16:36 +0100 [thread overview]
Message-ID: <569D7254.5070406@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.10.1601182226390.18513@digraph.polyomino.org.uk>
On 01/18/2016 11:27 PM, Joseph Myers wrote:
> On Mon, 18 Jan 2016, Daniel Colascione wrote:
>
>> On 01/18/2016 11:54 AM, Zack Weinberg wrote:
>>> On Mon, Jan 18, 2016 at 2:47 PM, Daniel Colascione <dancol@dancol.org> wrote:
>>>>
>>>> As long as the ABI support is there, we can keep using the "separate
>>>> malloc implementation" even if glibc doesn't cooperate by providing
>>>> convenient headers to access it.
>>>
>>> Clarification: it will not be possible to link new executables against
>>> the symbols in question. (This is what a "compat symbol" in glibc is -
>>> available only to existing binaries, not to new invocations of ld.)
>>
>> Oh, with a linker script or other hackery, I'm sure I could make it
>> available to new invocations of ld. It's just bytes.
>
> Being a compat symbol also means that future architecture ports and ABIs
> don't include the functionality at all.
And even if the symbol is still there, the the version you need to
supply will be architecture-specific. Don't do this. :)
Florian
next prev parent reply other threads:[~2016-01-18 23:16 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-18 12:33 Removal of unexec support from glibc malloc Florian Weimer
2016-01-18 19:20 ` John Wiegley
2016-01-18 20:27 ` Florian Weimer
2016-01-19 13:52 ` Should Glibc API be changed? Richard Stallman
2016-01-19 16:40 ` Florian Weimer
2016-01-20 2:56 ` Richard Stallman
2016-01-20 17:07 ` Florian Weimer
2016-01-23 5:56 ` Removal of unexec support from glibc malloc Stefan Monnier
2016-01-26 22:08 ` Florian Weimer
2016-01-18 22:45 ` Ali Bahrami
2016-01-18 23:45 ` John Wiegley
2016-01-19 0:45 ` Wolfgang Jenkner
2016-01-19 0:56 ` Ali Bahrami
2016-01-19 1:14 ` Dmitry Gutov
2016-01-19 1:44 ` Ken Raeburn
2016-01-19 1:59 ` Dmitry Gutov
2016-01-19 3:10 ` Ken Raeburn
2016-01-19 3:17 ` Dmitry Gutov
2016-01-19 7:03 ` Florian Weimer
2016-01-19 8:36 ` Ken Raeburn
2016-01-19 16:42 ` Eli Zaretskii
2016-01-19 1:45 ` Ali Bahrami
2016-01-19 2:03 ` Dmitry Gutov
2016-01-19 16:04 ` Eli Zaretskii
2016-01-20 2:57 ` Richard Stallman
2016-01-20 7:43 ` David Caldwell
2016-01-20 9:35 ` Eli Zaretskii
2016-01-21 3:01 ` Richard Stallman
2016-01-21 3:00 ` Richard Stallman
2016-01-19 15:58 ` Eli Zaretskii
2016-01-19 20:37 ` Fabrice Popineau
2016-01-20 2:56 ` Richard Stallman
2016-01-23 13:51 ` Michael Sperber
2016-01-23 20:36 ` Marcus Crestani
2016-01-19 23:53 ` Sam Steingold
2016-01-18 19:24 ` Paul Eggert
2016-01-18 19:30 ` John Wiegley
2016-01-18 19:47 ` Daniel Colascione
2016-01-18 19:54 ` Zack Weinberg
2016-01-18 19:55 ` Daniel Colascione
2016-01-18 22:27 ` Joseph Myers
2016-01-18 23:16 ` Florian Weimer [this message]
2016-01-18 19:50 ` Paul Eggert
2016-01-18 19:54 ` Daniel Colascione
2016-01-18 20:02 ` Eli Zaretskii
2016-01-18 20:05 ` Daniel Colascione
2016-01-18 22:10 ` Philipp Stephani
2016-01-18 22:12 ` Daniel Colascione
2016-01-18 22:36 ` Óscar Fuentes
2016-01-23 5:50 ` Stefan Monnier
2016-01-18 20:24 ` Wolfgang Jenkner
2016-01-18 20:29 ` Eli Zaretskii
2016-01-18 20:36 ` Wolfgang Jenkner
2016-01-18 22:42 ` Paul Eggert
2016-01-18 23:23 ` Florian Weimer
2016-01-19 6:31 ` Paul Eggert
2016-01-19 9:27 ` Florian Weimer
2016-01-19 10:14 ` Florian Weimer
2016-01-19 13:27 ` Wolfgang Jenkner
2016-01-19 16:58 ` Eli Zaretskii
2016-01-30 9:38 ` Paul Eggert
2016-01-18 22:44 ` Florian Weimer
2016-01-19 3:48 ` Eli Zaretskii
2016-01-23 5:49 ` Stefan Monnier
2016-01-23 7:00 ` Eli Zaretskii
2016-01-23 15:29 ` Stefan Monnier
2016-01-23 15:50 ` Eli Zaretskii
2016-01-23 22:19 ` Stefan Monnier
2016-01-23 22:52 ` Richard Stallman
2016-01-26 22:17 ` Florian Weimer
2016-01-27 1:32 ` Stefan Monnier
2016-01-27 3:38 ` Eli Zaretskii
2016-01-27 9:04 ` Florian Weimer
2016-01-27 16:02 ` Eli Zaretskii
2016-01-27 22:54 ` Richard Stallman
2016-01-27 22:52 ` Richard Stallman
2016-01-18 23:15 ` Florian Weimer
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