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* [Bug libc/14042] New: _mcount@GLIBC_2.0 missing in libc
@ 2012-05-01 12:33 schwab@linux-m68k.org
2012-05-01 12:54 ` [Bug libc/14042] " schwab@linux-m68k.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: schwab@linux-m68k.org @ 2012-05-01 12:33 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14042
Bug #: 14042
Summary: _mcount@GLIBC_2.0 missing in libc
Product: glibc
Version: 2.15
Status: NEW
Keywords: glibc_2.15
Severity: critical
Priority: P2
Component: libc
AssignedTo: unassigned@sourceware.org
ReportedBy: schwab@linux-m68k.org
CC: amodra@gmail.com, drepper.fsp@gmail.com
Classification: Unclassified
Host: powerpc-*-*
This was broken by
commit 24f579d
Author: Alan Modra <amodra@gmail.com>
Date: Wed Sep 7 22:02:42 2011 -0400
Fix profiling on powerpc32 secure-plt shared libs and PIEs
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* [Bug libc/14042] _mcount@GLIBC_2.0 missing in libc
2012-05-01 12:33 [Bug libc/14042] New: _mcount@GLIBC_2.0 missing in libc schwab@linux-m68k.org
@ 2012-05-01 12:54 ` schwab@linux-m68k.org
2012-05-02 2:58 ` amodra at gmail dot com
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: schwab@linux-m68k.org @ 2012-05-01 12:54 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14042
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> 2012-05-01 12:54:15 UTC ---
Also __mcount_internal should not be GLIBC_PRIVATE, since it is not a internal
interface between parts of glibc, but a public interface, even if only
referenced indirectly via -lc_nonshared.
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* [Bug libc/14042] _mcount@GLIBC_2.0 missing in libc
2012-05-01 12:33 [Bug libc/14042] New: _mcount@GLIBC_2.0 missing in libc schwab@linux-m68k.org
2012-05-01 12:54 ` [Bug libc/14042] " schwab@linux-m68k.org
@ 2012-05-02 2:58 ` amodra at gmail dot com
2012-06-27 22:34 ` jsm28 at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: amodra at gmail dot com @ 2012-05-02 2:58 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14042
--- Comment #2 from Alan Modra <amodra at gmail dot com> 2012-05-02 02:58:19 UTC ---
I guess the problem is that my change breaks backward compatibility. We really
do not want the linker to use _mcount in libc.so.6, because that cannot work
when producing -msecure-plt PIEs or shared libraries. So it would appear that
_mcount needs to be in both libc_nonshared.a and libc.so.6, with the latter
ideally not available for linking unless given a specific symbol version. I'll
have to dig a bit to see how that can be done using the glibc build system.
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* [Bug libc/14042] _mcount@GLIBC_2.0 missing in libc
2012-05-01 12:33 [Bug libc/14042] New: _mcount@GLIBC_2.0 missing in libc schwab@linux-m68k.org
2012-05-01 12:54 ` [Bug libc/14042] " schwab@linux-m68k.org
2012-05-02 2:58 ` amodra at gmail dot com
@ 2012-06-27 22:34 ` jsm28 at gcc dot gnu.org
2012-06-28 1:39 ` amodra at gmail dot com
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-06-27 22:34 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14042
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|glibc_2.15 |
--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> 2012-06-27 22:34:33 UTC ---
Removing glibc_2.15 keyword as backport suitability can't be judged until there
is a fix on master. After this is fixed on master, anyone wanting a backport
should feel free to attach a tested backport patch to this bug (or a new bug,
if this one is closed as fixed).
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* [Bug libc/14042] _mcount@GLIBC_2.0 missing in libc
2012-05-01 12:33 [Bug libc/14042] New: _mcount@GLIBC_2.0 missing in libc schwab@linux-m68k.org
` (2 preceding siblings ...)
2012-06-27 22:34 ` jsm28 at gcc dot gnu.org
@ 2012-06-28 1:39 ` amodra at gmail dot com
2012-07-28 8:36 ` tschwinge at sourceware dot org
2014-06-13 14:07 ` fweimer at redhat dot com
5 siblings, 0 replies; 7+ messages in thread
From: amodra at gmail dot com @ 2012-06-28 1:39 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14042
Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |http://sourceware.org/ml/li
| |bc-alpha/2012-05/msg00070.h
| |tml
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* [Bug libc/14042] _mcount@GLIBC_2.0 missing in libc
2012-05-01 12:33 [Bug libc/14042] New: _mcount@GLIBC_2.0 missing in libc schwab@linux-m68k.org
` (3 preceding siblings ...)
2012-06-28 1:39 ` amodra at gmail dot com
@ 2012-07-28 8:36 ` tschwinge at sourceware dot org
2014-06-13 14:07 ` fweimer at redhat dot com
5 siblings, 0 replies; 7+ messages in thread
From: tschwinge at sourceware dot org @ 2012-07-28 8:36 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14042
Thomas Schwinge <tschwinge at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |tschwinge at sourceware dot
| |org
Resolution| |FIXED
AssignedTo|unassigned at sourceware |schwab@linux-m68k.org
|dot org |
--- Comment #4 from Thomas Schwinge <tschwinge at sourceware dot org> 2012-07-28 08:36:39 UTC ---
Fixed in commit 261f485936b283f4327fc1f2fc8fd1705d805c12, NEWS updated in
commit ad41a87fe0777b1500df48609307f8d9d906dfb9.
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* [Bug libc/14042] _mcount@GLIBC_2.0 missing in libc
2012-05-01 12:33 [Bug libc/14042] New: _mcount@GLIBC_2.0 missing in libc schwab@linux-m68k.org
` (4 preceding siblings ...)
2012-07-28 8:36 ` tschwinge at sourceware dot org
@ 2014-06-13 14:07 ` fweimer at redhat dot com
5 siblings, 0 replies; 7+ messages in thread
From: fweimer at redhat dot com @ 2014-06-13 14:07 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=14042
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags| |security-
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end of thread, other threads:[~2014-06-13 14:07 UTC | newest]
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2012-05-01 12:33 [Bug libc/14042] New: _mcount@GLIBC_2.0 missing in libc schwab@linux-m68k.org
2012-05-01 12:54 ` [Bug libc/14042] " schwab@linux-m68k.org
2012-05-02 2:58 ` amodra at gmail dot com
2012-06-27 22:34 ` jsm28 at gcc dot gnu.org
2012-06-28 1:39 ` amodra at gmail dot com
2012-07-28 8:36 ` tschwinge at sourceware dot org
2014-06-13 14:07 ` fweimer at redhat dot com
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