From: Simon Marchi <simon.marchi@polymtl.ca>
To: Florian Weimer <fweimer@redhat.com>, libc-alpha@sourceware.org
Cc: gdb@sourceware.org
Subject: Re: [PATCH] nptl: Export libthread_db-used symbols under GLIBC_PRIVATE
Date: Sun, 20 Jun 2021 08:38:07 -0400 [thread overview]
Message-ID: <4df1e03a-eead-82b2-289f-b6cb7ddc0159@polymtl.ca> (raw)
In-Reply-To: <877disuwfq.fsf@oldenburg.str.redhat.com>
On 2021-06-17 3:23 p.m., Florian Weimer via Gdb wrote:
> Kevin, this *almost* gives us the perfect debugging experience with your
> patched GDB in Fedora 35, according to my preliminary tests. A build
> with the patch is running here:
>
> <https://koji.fedoraproject.org/koji/buildinfo?buildID=1773177>
>
> However, it seems that GDB still needs pthread_create in the .symtab to
> trigger loading of libpthread_db. A fully stripped libc.so.6 without
> .symtab does not trigger loading in my experiments. (The other symbols
> we preserve for valgrind's sake and are immaterial to GDB.) In other
> words,
Stupid question, but: since pthread_create is a function exposed by the
libc.so shared library, won't there still be an entry for it in .dynsym?
And if so, shouldn't GDB see it?
Simon
next prev parent reply other threads:[~2021-06-20 12:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-17 19:23 Florian Weimer
2021-06-20 12:38 ` Simon Marchi [this message]
2021-06-27 22:25 ` Carlos O'Donell
2021-06-29 14:20 ` Simon Marchi
2021-06-29 14:24 ` Florian Weimer
2021-06-28 2:10 ` Carlos O'Donell
2021-06-28 8:34 ` Florian Weimer
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=4df1e03a-eead-82b2-289f-b6cb7ddc0159@polymtl.ca \
--to=simon.marchi@polymtl.ca \
--cc=fweimer@redhat.com \
--cc=gdb@sourceware.org \
--cc=libc-alpha@sourceware.org \
/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).