From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <sourceware-bugzilla@sourceware.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 2BCB33858288; Tue, 29 Nov 2022 11:53:20 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2BCB33858288
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org;
	s=default; t=1669722800;
	bh=Dyhqw+3xQJfDlZaG1GNwWRP20gNW4xa0uMpx+0XAYVs=;
	h=From:To:Subject:Date:From;
	b=Ab89XwaUSGuu2TEWkBwcBm/BBn+Cuju829opZZ6tKeSIKWltcbnZNhKHlfcn4AwZR
	 9YgSIvf2fPF0WK4kz3H8k2x+PNlQv7VyrUTV+N+eJANhFGoMbgDLcpBkL/SHDHbR6H
	 yxCJn0jyyGSRrAVTbk8F9EhC6IDCSKwlNDkxa3Do=
From: "misch at google dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/29834] New: libpthread.so lacks GLIBC_PRIVATE version for
 glibc 2.34 and later
Date: Tue, 29 Nov 2022 11:53:19 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: glibc
X-Bugzilla-Component: nptl
X-Bugzilla-Version: 2.34
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: misch at google dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter cc target_milestone
 attachments.created
Message-ID: <bug-29834-131@http.sourceware.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <glibc-bugs.sourceware.org>

https://sourceware.org/bugzilla/show_bug.cgi?id=3D29834

            Bug ID: 29834
           Summary: libpthread.so lacks GLIBC_PRIVATE version for glibc
                    2.34 and later
           Product: glibc
           Version: 2.34
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: nptl
          Assignee: unassigned at sourceware dot org
          Reporter: misch at google dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Created attachment 14474
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D14474&action=3Ded=
it
Patch to restore GLIBC_PRIVATE version for libpthread.so

Since glibc 2.34 libpthread.so no longer provides the GLIBC_PRIVATE version.
This in turn causes problems with closed source software which we can't
recompile ourselves. I've filed this bug to discuss if it would make sense =
to
restore the GLIBC_PRIVATE version.


Details:
Commit e8d52b64a54ba9ed7778ca9ce1f084eb5808f8d1 [1] removed the GLIBC_PRIVA=
TE
version from libthread.so. This in turn caused closed source software by
Synopsys [2] to fail with this error:

$ /opt/synopsys/vcs/T-2022.06-SP1-1/linux64/bin/vcs1 -h
/opt/synopsys/vcs/T-2022.06-SP1-1/linux64/bin/vcs1:
/lib/x86_64-linux-gnu/libpthread.so.0: version `GLIBC_PRIVATE' not found
(required by /opt/synopsys/vcs/T-2022.06-SP1-1/linux64/bin/vcs1)


It turns out that the Synopsys binaries have a weak symbol for
__pthread_unwind@GLIBC_PRIVATE. Synopsys support is slow and so for the time
being we've helped ourselves by patching glibc to provide the GLIBC_PRIVATE
version again for libpthread.so (see attached patch).


[1]
https://sourceware.org/git/?p=3Dglibc.git;a=3Dcommitdiff;h=3De8d52b64a54ba9=
ed7778ca9ce1f084eb5808f8d1
[2] https://www.synopsys.com/

--=20
You are receiving this mail because:
You are on the CC list for the bug.=