From: Alan Modra <amodra@gmail.com>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: Michael Matz <matz@suse.de>, gnu-gabi@sourceware.org
Subject: Re: Specify how undefined weak symbol should be resolved in executable
Date: Fri, 01 Jan 2016 00:00:00 -0000 [thread overview]
Message-ID: <20160224015659.GH10657@bubble.grove.modra.org> (raw)
In-Reply-To: <CAMe9rOpHGzJ--5gTucEsfrJtG5kDVyS8nUjc3P+XbpKXA+Ez4w@mail.gmail.com>
On Tue, Feb 23, 2016 at 05:18:16PM -0800, H.J. Lu wrote:
> On Tue, Feb 23, 2016 at 5:04 PM, Alan Modra <amodra@gmail.com> wrote:
> > On Tue, Feb 23, 2016 at 09:10:51AM -0800, H.J. Lu wrote:
> >> At run-time, there is no difference between weak defined and non-weak
> >> defined symbols.
> >
> > This is not true, and even if it was..
> >
>
> Please do
>
> # git grep dl_dynamic_weak
>
> in glibc to see it for yourself.
That's exactly the code that shows ld.so can treat weak and strong
symbols differently! (And yes, I know the default setting of
dl_dynamic_weak.)
Besides, the main point of my comment was that it is simply faulty
reasoning to claim that the linker needs to change because of some
ld.so behaviour.
--
Alan Modra
Australia Development Lab, IBM
next prev parent reply other threads:[~2016-02-24 1:57 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-01 0:00 H.J. Lu
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Alan Modra
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` Szabolcs Nagy
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Alan Modra
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Alan Modra [this message]
2016-01-01 0:00 ` Carlos O'Donell
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` Michael Matz
2016-01-01 0:00 ` H.J. Lu
2016-01-01 0:00 ` H.J. Lu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160224015659.GH10657@bubble.grove.modra.org \
--to=amodra@gmail.com \
--cc=gnu-gabi@sourceware.org \
--cc=hjl.tools@gmail.com \
--cc=matz@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).