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* [Bug nptl/12889] New: Race condition in pthread_kill
@ 2011-06-15 0:39 bugdal at aerifal dot cx
2011-06-18 23:35 ` [Bug nptl/12889] " ppluzhnikov at google dot com
` (15 more replies)
0 siblings, 16 replies; 17+ messages in thread
From: bugdal at aerifal dot cx @ 2011-06-15 0:39 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=12889
Summary: Race condition in pthread_kill
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: nptl
AssignedTo: drepper.fsp@gmail.com
ReportedBy: bugdal@aerifal.cx
There is a race condition in pthread_kill: it is possible that, between the
time pthread_kill reads the pid/tid from the target thread descriptor and the
time it makes the tgkill syscall, the target thread terminates and the same tid
gets assigned to a new thread in the same process.
(The tgkill syscall was designed to eliminate a similar race condition in
tkill, but it only succeeded in eliminating races where the tid gets reused in
a different process, and does not help if the same tid gets assigned to a new
thread in the same process.)
The only solution I can see is to introduce a mutex that ensures that a thread
cannot exit while pthread_kill is being called on it.
Note that in most real-world situations, like almost all race conditions, this
one will be extremely rare. To make it measurable, one could exhaust all but
1-2 available pid values, possibly by lowering the max pid parameter in /proc,
forcing the same tid to be reused rapidly.
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
@ 2011-06-18 23:35 ` ppluzhnikov at google dot com
2012-04-29 3:04 ` bugdal at aerifal dot cx
` (14 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: ppluzhnikov at google dot com @ 2011-06-18 23:35 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=12889
Paul Pluzhnikov <ppluzhnikov at google dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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| |com
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
2011-06-18 23:35 ` [Bug nptl/12889] " ppluzhnikov at google dot com
@ 2012-04-29 3:04 ` bugdal at aerifal dot cx
2014-06-27 13:11 ` fweimer at redhat dot com
` (13 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: bugdal at aerifal dot cx @ 2012-04-29 3:04 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=12889
Rich Felker <bugdal at aerifal dot cx> changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|drepper.fsp at gmail dot |unassigned at sourceware
|com |dot org
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
2011-06-18 23:35 ` [Bug nptl/12889] " ppluzhnikov at google dot com
2012-04-29 3:04 ` bugdal at aerifal dot cx
@ 2014-06-27 13:11 ` fweimer at redhat dot com
2015-10-31 12:08 ` fweimer at redhat dot com
` (12 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: fweimer at redhat dot com @ 2014-06-27 13:11 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
Flags| |security-
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (2 preceding siblings ...)
2014-06-27 13:11 ` fweimer at redhat dot com
@ 2015-10-31 12:08 ` fweimer at redhat dot com
2015-10-31 12:37 ` schwab@linux-m68k.org
` (11 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: fweimer at redhat dot com @ 2015-10-31 12:08 UTC (permalink / raw)
To: glibc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="UTF-8", Size: 3229 bytes --]
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
POSIX says:
“The lifetime of a thread ID ends after the thread terminates if it was created
with the detachstate attribute set to PTHREAD_CREATE_DETACHED or if
pthread_detach() or pthread_join() has been called for that thread.â€
How is this to be interpreted? This way?
TERMINATED && (CREATED-AS-DETACHED || DETACH-CALLED || JOIN-CALLED)
Or this way?
(TERMINATED && CREATED-AS-DETACHED) || DETACH-CALLED || JOIN-CALLED
In the second case, pthread_detach and pthread_join could just clear the TID in
the thread descriptor to avoid the race, before reaping the TID from the
kernel.
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>From glibc-bugs-return-30367-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 31 12:11:20 2015
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19193] pthread_kill returns ESRCH for a thread ID whose lifetime has not ended
Date: Sat, 31 Oct 2015 12:11:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id\x19193
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Created attachment 8759
--> https://sourceware.org/bugzilla/attachment.cgi?id‡59&actioníit
bug19193.c
Test case. I think it has to be time-based.
Another test with pthread_tryjoin_np would be desirable.
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (3 preceding siblings ...)
2015-10-31 12:08 ` fweimer at redhat dot com
@ 2015-10-31 12:37 ` schwab@linux-m68k.org
2015-10-31 20:27 ` bugdal at aerifal dot cx
` (10 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: schwab@linux-m68k.org @ 2015-10-31 12:37 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
If the second interpretation were the intented one, then the following
paragraph would not have been necessary, since no function could be called on a
detached thread.
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (4 preceding siblings ...)
2015-10-31 12:37 ` schwab@linux-m68k.org
@ 2015-10-31 20:27 ` bugdal at aerifal dot cx
2021-08-17 6:25 ` fweimer at redhat dot com
` (9 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: bugdal at aerifal dot cx @ 2015-10-31 20:27 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
--- Comment #3 from Rich Felker <bugdal at aerifal dot cx> ---
The first interpretation is correct but it does not matter because there is no
such thing as "reaping the tid". The tid is available for reuse immediately
when the SYS_exit syscall is made by pthread_exit or equivalent.
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>From glibc-bugs-return-30370-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 31 22:09:04 2015
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19178] ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses prelink
Date: Sat, 31 Oct 2015 22:09:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19178
--- Comment #13 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, hjl/pr19178/master has been created
at cadaf1336332ca7bcdfe4a400776e5782a20e26d (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cadaf1336332ca7bcdfe4a400776e5782a20e26d
commit cadaf1336332ca7bcdfe4a400776e5782a20e26d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Oct 28 07:49:44 2015 -0700
Keep only ELF_RTYPE_CLASS_{PLT|COPY} bits for prelink
prelink runs ld.so with the environment variable LD_TRACE_PRELINKING
set to dump the relocation type class from _dl_debug_bindings. prelink
has the following relocation type classes:
#define RTYPE_CLASS_VALID 8
#define RTYPE_CLASS_PLT (8|1)
#define RTYPE_CLASS_COPY (8|2)
#define RTYPE_CLASS_TLS (8|4)
where ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA has a conflict with
RTYPE_CLASS_TLS.
Since prelink only uses ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY
bits, we should clear the other bits when the DL_DEBUG_PRELINK bit is
set.
[BZ #19178]
* elf/dl-lookup.c (RTYPE_CLASS_VALID): New.
(RTYPE_CLASS_PLT): Likewise.
(RTYPE_CLASS_COPY): Likewise.
(RTYPE_CLASS_TLS): Likewise.
(_dl_debug_bindings): Use RTYPE_CLASS_TLS and RTYPE_CLASS_VALID
to set relocation type class for DL_DEBUG_PRELINK. Keep only
ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY bits for
DL_DEBUG_PRELINK.
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>From glibc-bugs-return-30371-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 02 11:06:48 2015
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From: "pander at users dot sourceforge.net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/19198] New: Small improvements Dutch locales
Date: Mon, 02 Nov 2015 11:06:00 -0000
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Bug ID: 19198
Summary: Small improvements Dutch locales
Product: glibc
Version: unspecified
Status: NEW
Severity: enhancement
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: pander at users dot sourceforge.net
CC: libc-locales at sourceware dot org
Target Milestone: ---
Please make the following minor improvements to the Dutch locales
For the file
https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=localedata/locales/nl_NL@euro;hb=HEAD
Replace the lines
% metric
measurement 1
with
copy "nl_NL"
For the file
https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=localedata/locales/nl_NL;hb=HEAD
Remove the empty line before the line
week 7;19971130;4
Remove the lines
% FIXME
before the line
height 297
and before the line
width 210
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Arkadiusz Miskiewicz <arekm at maven dot pl> changed:
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Subject: [Bug nptl/19192] __old_sem_wait never terminates
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Does the hang happen on every call to __old_sem_wait?
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>From glibc-bugs-return-30375-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 02 14:45:17 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug time/19179] gmtime_r internally calls getenv("TZ") which is not thread-safe
Date: Mon, 02 Nov 2015 14:45:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
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>From glibc-bugs-return-30374-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 02 14:45:08 2015
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug time/14023] localtime_r unexpectedly writes tzname[]
Date: Mon, 02 Nov 2015 14:45:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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>From glibc-bugs-return-30376-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 02 17:34:32 2015
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From: "jurobystricky at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19192] __old_sem_wait never terminates
Date: Mon, 02 Nov 2015 17:34:00 -0000
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--- Comment #2 from Juro Bystricky <jurobystricky at hotmail dot com> ---
(In reply to Florian Weimer from comment #1)
> Does the hang happen on every call to __old_sem_wait?
It is hard to say. In my case the semaphore is initialized via
"new_sem_init" but then the wait for semaphore is via "old_sem_wait".
In this case there will be always problems, as the two calls assume different
structure for sem_t. Prior to glibc 2.21 this would work as well,
as the two different structures agreed on interpretation of the field "value".
Normally, I would expect no problems with combination
old_sem_init/old_sem_wait.
I should clarify that I ran into this problem using Python 2.7/multiprocessing.
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>From glibc-bugs-return-30377-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 02 18:55:36 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug math/6799] nextafter() and nexttoward() doen't set errno on overflow/underflow errors
Date: Mon, 02 Nov 2015 18:55:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=85422c2acba83852396c9d9fd22ff0493e3606fe
commit 85422c2acba83852396c9d9fd22ff0493e3606fe
Author: Joseph Myers <joseph@codesourcery.com>
Date: Mon Nov 2 18:54:19 2015 +0000
Make nextafter, nexttoward set errno (bug 6799).
nextafter and nexttoward fail to set errno on overflow and underflow.
This patch makes them do so in cases that should include all the cases
where such errno setting is required by glibc's goals for when to set
errno (but not all cases of underflow where the result is nonzero and
so glibc's goals do not require errno setting).
Tested for x86_64, x86, mips64 and powerpc.
[BZ #6799]
* math/s_nextafter.c: Include <errno.h>.
(__nextafter): Set errno on overflow and underflow.
* math/s_nexttowardf.c: Include <errno.h>.
(__nexttowardf): Set errno on overflow and underflow.
* sysdeps/i386/fpu/s_nextafterl.c: Include <errno.h>.
(__nextafterl): Set errno on overflow and underflow.
* sysdeps/i386/fpu/s_nexttoward.c: Include <errno.h>.
(__nexttoward): Set errno on overflow and underflow.
* sysdeps/i386/fpu/s_nexttowardf.c: Include <errno.h>.
(__nexttowardf): Set errno on overflow and underflow.
* sysdeps/ieee754/flt-32/s_nextafterf.c: Include <errno.h>.
(__nextafterf): Set errno on overflow and underflow.
* sysdeps/ieee754/ldbl-128/s_nextafterl.c: Include <errno.h>.
(__nextafterl): Set errno on overflow and underflow.
* sysdeps/ieee754/ldbl-128/s_nexttoward.c: Include <errno.h>.
(__nexttoward): Set errno on overflow and underflow.
* sysdeps/ieee754/ldbl-128/s_nexttowardf.c: Include <errno.h>.
(__nexttowardf): Set errno on overflow and underflow.
* sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c: Include <errno.h>.
(__nextafterl): Set errno on overflow and underflow.
* sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c: Include <errno.h>.
(__nexttoward): Set errno on overflow and underflow.
* sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c: Include <errno.h>.
(__nexttowardf): Set errno on overflow and underflow.
* sysdeps/ieee754/ldbl-96/s_nexttoward.c: Include <errno.h>.
(__nexttoward): Set errno on overflow and underflow.
* sysdeps/ieee754/ldbl-96/s_nexttowardf.c: Include <errno.h>.
(__nexttowardf): Set errno on overflow and underflow.
* sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c: Include <errno.h>.
(__nldbl_nexttowardf): Set errno on overflow and underflow.
* sysdeps/m68k/m680x0/fpu/s_nextafterl.c: Include <errno.h>.
(__nextafterl): Set errno on overflow and underflow.
* math/libm-test.inc (nextafter_test_data): Do not allow errno
setting to be missing on overflow. Add more tests.
(nexttoward_test_data): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 37 +++++++++++++++++++++++++++
NEWS | 2 +-
math/libm-test.inc | 20 ++++++++++----
math/s_nextafter.c | 3 ++
math/s_nexttowardf.c | 3 ++
sysdeps/i386/fpu/s_nextafterl.c | 3 ++
sysdeps/i386/fpu/s_nexttoward.c | 3 ++
sysdeps/i386/fpu/s_nexttowardf.c | 3 ++
sysdeps/ieee754/flt-32/s_nextafterf.c | 3 ++
sysdeps/ieee754/ldbl-128/s_nextafterl.c | 3 ++
sysdeps/ieee754/ldbl-128/s_nexttoward.c | 3 ++
sysdeps/ieee754/ldbl-128/s_nexttowardf.c | 3 ++
sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c | 5 +++
sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c | 3 ++
sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c | 3 ++
sysdeps/ieee754/ldbl-96/s_nexttoward.c | 3 ++
sysdeps/ieee754/ldbl-96/s_nexttowardf.c | 3 ++
sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c | 3 ++
sysdeps/m68k/m680x0/fpu/s_nextafterl.c | 3 ++
19 files changed, 102 insertions(+), 7 deletions(-)
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>From glibc-bugs-return-30378-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 02 18:56:46 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug math/6799] nextafter() and nexttoward() doen't set errno on overflow/underflow errors
Date: Mon, 02 Nov 2015 18:56:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #6 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23 (as regards cases where glibc's errno-setting goals mean errno
should be set, that is; it may or may not be set for underflow cases not
returning a zero).
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>From glibc-bugs-return-30379-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 02 23:54:10 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19201] New: dbl-64 remainder incorrect sign of zero result
Date: Mon, 02 Nov 2015 23:54:00 -0000
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Bug ID: 19201
Summary: dbl-64 remainder incorrect sign of zero result
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
For some large arguments, the dbl-64 implementation of remainder gives zero
results with the wrong sign, e.g.:
Failure: Test: remainder (-max_value, max_value)
Result:
is: 0.0000000000000000e+00 0x0.0000000000000p+0
should be: -0.0000000000000000e+00 -0x0.0000000000000p+0
difference: 0.0000000000000000e+00 0x0.0000000000000p+0
ulp : 0.0000
max.ulp : 0.0000
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>From glibc-bugs-return-30380-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 03 00:13:10 2015
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Subject: [Bug math/19201] dbl-64 remainder incorrect sign of zero result
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=444ec6b8d8091456a2622765ac60f9c60e7755a9
commit 444ec6b8d8091456a2622765ac60f9c60e7755a9
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Nov 3 00:11:49 2015 +0000
Fix dbl-64 remainder sign of zero result (bug 19201).
For some large arguments, the dbl-64 implementation of remainder gives
zero results with the wrong sign, resulting from a subtraction that is
mathematically correct but does not guarantee that a zero result has
the sign of the first argument to remainder. This patch adds an
appropriate check for this case, similar to other implementations of
remainder in the case of equality, and adds tests of remainder on
inputs already used to test remquo.
Tested for x86_64 and x86.
[BZ #19201]
* sysdeps/ieee754/dbl-64/e_remainder.c (__ieee754_remainder):
Check for zero remainder in case of large exponents and ensure
correct sign of result in that case.
* math/libm-test.inc (remainder_test_data): Add more tests.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 +++
NEWS | 3 +-
math/libm-test.inc | 69 ++++++++++++++++++++++++++++++++++
sysdeps/ieee754/dbl-64/e_remainder.c | 2 +
4 files changed, 79 insertions(+), 1 deletions(-)
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>From glibc-bugs-return-30381-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 03 00:13:31 2015
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Subject: [Bug math/19201] dbl-64 remainder incorrect sign of zero result
Date: Tue, 03 Nov 2015 00:13:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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>From glibc-bugs-return-30382-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 03 10:38:28 2015
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Subject: [Bug malloc/19182] malloc deadlock between ptmalloc_lock_all and _int_new_arena
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Florian Weimer <fweimer at redhat dot com> changed:
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Subject: [Bug libc/154] tzset not called frequently enough by localtime() and friends
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Joshua <netjoker.45 at gmail dot com> changed:
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| |net/pub/Main/WebHome/1.html
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|net/pub/Main/WebHome/1.html |
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|netjoker45 at gmail dot com |
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| |net/pub/Main/WebHome/1.html
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>From glibc-bugs-return-30386-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 03 18:10:52 2015
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--- Comment #7 from Joshua <netjoker.45 at gmail dot com> ---
http://doc.emergingthreats.net/pub/Main/WebHome/1.html
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>From glibc-bugs-return-30387-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 03 18:43:07 2015
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
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|net/pub/Main/WebHome/1.html |
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>From glibc-bugs-return-30388-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 03 22:27:25 2015
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Subject: [Bug libc/18604] assert macro-expands its argument
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8ba14398e629c1f63b9c91a59a47a713b3cce8bc
commit 8ba14398e629c1f63b9c91a59a47a713b3cce8bc
Author: David Kastrup <dak@gnu.org>
Date: Tue Nov 3 23:08:54 2015 +0100
Don't macro-expand failed assertion expression [BZ #18604]
[BZ #18604]
* assert/assert.h (assert): Don't macro-expand failed assertion
expression in error message.
* malloc/malloc.c (assert): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
assert/assert.h | 2 +-
malloc/malloc.c | 2 +-
3 files changed, 9 insertions(+), 2 deletions(-)
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>From glibc-bugs-return-30389-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 03 22:28:09 2015
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |fweimer at redhat dot com
Resolution|--- |FIXED
--- Comment #9 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.23.
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commit 739d805a57cfb92501bf5105c73cb85f5bea1fd9
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Nov 4 08:09:06 2015 +0100
Add bug 18604 to NEWS
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Subject: [Bug localedata/15578] kk_KZ: various updates
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--- Comment #7 from Baurzhan Muftakhidinov <baurthefirst at gmail dot com> ---
(In reply to Carlos O'Donell from comment #6)
> Please post the patch to libc-alpha for review following:
> https://sourceware.org/glibc/wiki/Contribution%20checklist
>
> If you have already, please ping the patch and TO me.
https://sourceware.org/ml/libc-alpha/2015-11/msg00002.html
Dear Carlos, FYI
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Florian Weimer <fweimer at redhat dot com> changed:
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commit 6fdd5d65c58e8c98960aa2249b1fb1546e2c256a
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Nov 4 17:48:40 2015 +0100
Add bug 18604 to the correct section
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>From glibc-bugs-return-30394-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 19:43:05 2015
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Subject: [Bug dynamic-link/15310] _dl_sort_fini is O(n^3) causing slow exit when many dsos
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Brooks Moses <brooks at gcc dot gnu.org> changed:
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--- Comment #20 from Brooks Moses <brooks at gcc dot gnu.org> ---
Ping; did anything ever happen with this?
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Subject: [Bug dynamic-link/15310] _dl_sort_fini is O(n^3) causing slow exit when many dsos
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Carlos O'Donell <carlos at redhat dot com> changed:
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CC| |paulo.cesar.pereira.de.andr
| |ade at gmail dot com
--- Comment #21 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Brooks Moses from comment #20)
> Ping; did anything ever happen with this?
No, but it would be awesome if someone moved this forward.
Unfortunately Don doesn't have a copyright assignment as far as I can tell, so
please don't look at the code in this patch if you plan to implement it.
Instead I suggest we look at bug 17645:
https://sourceware.org/bugzilla/show_bug.cgi?id=17645
Fedora bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1162810
libc-alpha post:
https://sourceware.org/ml/libc-alpha/2014-11/msg00702.html
And take a serious look at Paulo's work.
It still needs someone to write a test that actually does some decent coverage
over the permutation of DT_NEEDED trees.
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--- Comment #22 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Carlos O'Donell from comment #21)
> And take a serious look at Paulo's work.
In full disclosure, Paulo works at Red Hat.
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>From glibc-bugs-return-30399-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:58:36 2015
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Subject: [Bug stdio/12724] fclose violates POSIX 2008 on seekable input streams
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>From glibc-bugs-return-30397-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:58:07 2015
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Subject: [Bug dynamic-link/11787] Program with large TLS segments fail.
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>From glibc-bugs-return-30401-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:58:55 2015
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Subject: [Bug build/13853] Building libc.pot has a lot of warnings.
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>From glibc-bugs-return-30400-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:58:43 2015
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Subject: [Bug nptl/13690] pthread_mutex_unlock potentially cause invalid access
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>From glibc-bugs-return-30404-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:59:16 2015
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Subject: [Bug stdio/14267] fprintf() function is multithread-unsafe
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>From glibc-bugs-return-30406-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:59:43 2015
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Subject: [Bug nptl/14830] Race conditions with signals and thread priority scheduling
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>From glibc-bugs-return-30405-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:59:23 2015
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Subject: [Bug nptl/14744] kill -32 $pid or kill -33 $pid on a process cancels a random thread
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>From glibc-bugs-return-30402-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:59:01 2015
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Subject: [Bug network/14084] Cleanup reversal of sunrpc obsoletion code
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>From glibc-bugs-return-30403-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:59:09 2015
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Subject: [Bug build/14259] --localedir arg to configure is ignored
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>From glibc-bugs-return-30407-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:59:50 2015
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Subject: [Bug build/14995] glibc fails to build if gold is the default linker, even if ld.bfd is available
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>From glibc-bugs-return-30408-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 21:59:58 2015
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Subject: [Bug libc/15407] [x86_64] Partial frame info in sysdeps/x86_64/start.S
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>From glibc-bugs-return-30410-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 22:00:44 2015
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Subject: [Bug libc/16291] feature request: provide simpler ways to compute stack and tls boundaries
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>From glibc-bugs-return-30409-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 22:00:10 2015
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Subject: [Bug dynamic-link/16133] Access to __thread variable may call malloc
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>From glibc-bugs-return-30412-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 22:00:57 2015
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Subject: [Bug nptl/18435] pthread_once hangs when init routine throws an exception
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>From glibc-bugs-return-30411-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 22:00:49 2015
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Subject: [Bug libc/18124] hppa: setcontext erroneously returns -1 as exit code for last constant.
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>From glibc-bugs-return-30413-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 04 22:01:41 2015
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Subject: [Bug libc/18863] bits/siginfo.h: mips/ia64 missing si_syscall updates
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>From glibc-bugs-return-30414-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 00:08:43 2015
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19205] New: bits/math-finite.h conditions do not match math.h and bits/mathcalls.h
Date: Thu, 05 Nov 2015 00:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19205
Bug ID: 19205
Summary: bits/math-finite.h conditions do not match math.h and
bits/mathcalls.h
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
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bits/math-finite.h declares -ffinite-math-only variants of various functions
under conditions not matching those under which the normal versions are
declared.
* math.h only ever includes bits/mathcalls.h to declare float and long double
functions if __USE_ISOC99, but bits/math-finite.h declares some float functions
regardless (long double ones are conditioned on __MATH_DECLARE_LDOUBLE).
* Some functions are defined as inlines using lgamma_r functions under
conditions where those lgamma_r functions are not themselves declared.
* hypot is declared under __USE_XOPEN || __USE_ISOC99 in bits/mathcalls.h,
__USE_ISOC99 only in bits/math-finite.h.
* float and long double versions of Bessel functions should be limited to
__USE_MISC (as in bug 18977).
* gamma should not be declared for __USE_XOPEN2K (as in bug 18967).
* remainder should be restricted to __USE_XOPEN_EXTENDED || __USE_ISOC99, not
unconditional.
* scalb should not be declared for __USE_XOPEN2K8, and scalbf and scalbl are
non-POSIX (as in bug 18967).
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>From glibc-bugs-return-30417-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 00:50:05 2015
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Subject: [Bug math/18967] math.h XSI POSIX namespace (gamma, isnan, scalb)
Date: Thu, 05 Nov 2015 00:50:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3bfee8beb8caa939020d942dfa405a3d98975749
commit 3bfee8beb8caa939020d942dfa405a3d98975749
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 5 00:48:57 2015 +0000
Make bits/math-finite.h conditions match other headers (bug 19205).
bits/math-finite.h declares -ffinite-math-only variants of various
functions under conditions not matching those under which the normal
versions are declared.
* math.h only ever includes bits/mathcalls.h to declare float and long
double functions if __USE_ISOC99, but bits/math-finite.h declares
some float functions regardless (long double ones are conditioned on
__MATH_DECLARE_LDOUBLE). (For C90 functions this isn't a
conformance bug because C90 reserves the float and long double
names, but is still contrary to good glibc practice. For some other
functions in older XSI standards it *is* a conformance bug.)
* Some functions are defined as inlines using lgamma_r functions under
conditions where those lgamma_r functions are not themselves
declared.
* hypot is declared under __USE_XOPEN || __USE_ISOC99 in
bits/mathcalls.h, __USE_ISOC99 only in bits/math-finite.h.
* float and long double versions of Bessel functions should be limited
to __USE_MISC (as in bug 18977).
* gamma should not be declared for __USE_XOPEN2K (as in bug 18967).
* remainder should be restricted to __USE_XOPEN_EXTENDED ||
__USE_ISOC99, not unconditional.
* scalb should not be declared for __USE_XOPEN2K8, and scalbf and
scalbl are non-POSIX (as in bug 18967).
This patch fixes all these issues (it doesn't seem worth splitting
them into separate patches or bugs). I put __USE_ISOC99 conditionals,
where needed, around both float and long double declarations, even
though formally redundant around the long double declarations because
__MATH_DECLARE_LDOUBLE isn't defined without __USE_ISOC99; it seemed
clearer that way. The missing declarations of lgamma_r functions are
dealt with by directly using declarations of __lgamma*_r_finite, in
the implementation namespace, rather than having the inlines rely on
asm redirection of lgamma*_r.
After this patch, there are some apparently redundant nested
__USE_ISOC99 conditionals in lgamma / gamma definitions. These
actually reflect a separate bug (the correct condition for the lgamma
inline functions to set signgam is __USE_MISC || __USE_XOPEN, the
condition under which signgam is declared, rather than disabling
setting it if __USE_ISOC99, which includes XSI POSIX versions for
which signgam *should* be set). They'll be fixed as part of a fix for
that bug, which will also add tests for these inlines. I've put a
note about more general conform/ test coverage for -ffinite-math-only
on
<https://sourceware.org/glibc/wiki/Development_Todo/Master#conformtest_improvements>,
alongside other options for which this is also relevant (some of which
have also had such bugs in the past relating to mismatched
conditionals).
I also intend to enable the main libm-test.inc tests for the
math-finite.h functions, but some other bugs in __*_finite need fixing
first.
[BZ #19205]
* math/bits/math-finite.h (acosf): Condition declaration on
[__USE_ISOC99].
(acosl): Likewise.
(acoshf): Likewise.
(acoshl): Likewise.
(asinf): Likewise.
(asinl): Likewise.
(atan2f): Likewise.
(atan2l): Likewise.
(atanhf): Likewise.
(atanhl): Likewise.
(coshf): Likewise.
(coshl): Likewise.
(expf): Likewise.
(expl): Likewise.
(fmodf): Likewise.
(fmodl): Likewise.
(hypot): Change condition to [__USE_XOPEN || __USE_ISOC99].
(j0f): Change condition to [__USE_MISC && __USE_ISOC99].
(j0l): Likewise.
(y0f): Likewise.
(y0l): Likewise.
(j1f): Likewise.
(j1l): Likewise.
(y1f): Likewise.
(y1l): Likewise.
(jnf): Likewise.
(jnl): Likewise.
(ynf): Likewise.
(ynl): Likewise.
(lgammaf_r): Condition declaration on [__USE_ISOC99].
(lgammal_r): Likewise.
(__lgamma_r_finite): New declaration.
(__lgammaf_r_finite): Likewise.
(__lgammal_r_finite): Likewise.
(lgamma): Use __lgamma_r_finite.
(lgammaf): Condition definition on [__USE_ISOC99]. Use
__lgammaf_r_finite.
(lgammal): Condition definition on [__USE_ISOC99]. Use
__lgammal_r_finite.
(gamma): Do not define for [!__USE_MISC && __USE_XOPEN2K]. Use
__lgamma_r_finite.
(gammaf): Condition definition on [__USE_ISOC99]. Use
__lgammaf_r_finite.
(gammal): Condition definition on [__USE_ISOC99]. Use
__lgammal_r_finite.
(logf): Condition declaration on [__USE_ISOC99].
(logl): Likewise.
(log10f): Likewise.
(log10l): Likewise.
(ldexpf): Likewise.
(ldexpl): Likewise.
(powf): Likewise.
(powl): Likewise.
(remainder): Condition declaration on [__USE_XOPEN_EXTENDED ||
__USE_ISOC99].
(remainderf): Condition declaration on [__USE_ISOC99].
(remainderl): Likewise.
(scalb): Do not declare for [!__USE_MISC && __USE_XOPEN2K8].
(scalbf): Change condition to [__USE_MISC && __USE_ISOC99].
(scalbl): Likewise.
(sinhf): Condition declaration on [__USE_ISOC99].
(sinhl): Likewise.
(sqrtf): Likewise.
(sqrtl): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 69 ++++++++++++++++
NEWS | 2 +-
math/bits/math-finite.h | 198 ++++++++++++++++++++++++++++++++---------------
3 files changed, 206 insertions(+), 63 deletions(-)
--
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To: glibc-bugs@sourceware.org
Subject: [Bug math/18977] float / long double Bessel functions not in XSI POSIX
Date: Thu, 05 Nov 2015 00:50:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3bfee8beb8caa939020d942dfa405a3d98975749
commit 3bfee8beb8caa939020d942dfa405a3d98975749
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 5 00:48:57 2015 +0000
Make bits/math-finite.h conditions match other headers (bug 19205).
bits/math-finite.h declares -ffinite-math-only variants of various
functions under conditions not matching those under which the normal
versions are declared.
* math.h only ever includes bits/mathcalls.h to declare float and long
double functions if __USE_ISOC99, but bits/math-finite.h declares
some float functions regardless (long double ones are conditioned on
__MATH_DECLARE_LDOUBLE). (For C90 functions this isn't a
conformance bug because C90 reserves the float and long double
names, but is still contrary to good glibc practice. For some other
functions in older XSI standards it *is* a conformance bug.)
* Some functions are defined as inlines using lgamma_r functions under
conditions where those lgamma_r functions are not themselves
declared.
* hypot is declared under __USE_XOPEN || __USE_ISOC99 in
bits/mathcalls.h, __USE_ISOC99 only in bits/math-finite.h.
* float and long double versions of Bessel functions should be limited
to __USE_MISC (as in bug 18977).
* gamma should not be declared for __USE_XOPEN2K (as in bug 18967).
* remainder should be restricted to __USE_XOPEN_EXTENDED ||
__USE_ISOC99, not unconditional.
* scalb should not be declared for __USE_XOPEN2K8, and scalbf and
scalbl are non-POSIX (as in bug 18967).
This patch fixes all these issues (it doesn't seem worth splitting
them into separate patches or bugs). I put __USE_ISOC99 conditionals,
where needed, around both float and long double declarations, even
though formally redundant around the long double declarations because
__MATH_DECLARE_LDOUBLE isn't defined without __USE_ISOC99; it seemed
clearer that way. The missing declarations of lgamma_r functions are
dealt with by directly using declarations of __lgamma*_r_finite, in
the implementation namespace, rather than having the inlines rely on
asm redirection of lgamma*_r.
After this patch, there are some apparently redundant nested
__USE_ISOC99 conditionals in lgamma / gamma definitions. These
actually reflect a separate bug (the correct condition for the lgamma
inline functions to set signgam is __USE_MISC || __USE_XOPEN, the
condition under which signgam is declared, rather than disabling
setting it if __USE_ISOC99, which includes XSI POSIX versions for
which signgam *should* be set). They'll be fixed as part of a fix for
that bug, which will also add tests for these inlines. I've put a
note about more general conform/ test coverage for -ffinite-math-only
on
<https://sourceware.org/glibc/wiki/Development_Todo/Master#conformtest_improvements>,
alongside other options for which this is also relevant (some of which
have also had such bugs in the past relating to mismatched
conditionals).
I also intend to enable the main libm-test.inc tests for the
math-finite.h functions, but some other bugs in __*_finite need fixing
first.
[BZ #19205]
* math/bits/math-finite.h (acosf): Condition declaration on
[__USE_ISOC99].
(acosl): Likewise.
(acoshf): Likewise.
(acoshl): Likewise.
(asinf): Likewise.
(asinl): Likewise.
(atan2f): Likewise.
(atan2l): Likewise.
(atanhf): Likewise.
(atanhl): Likewise.
(coshf): Likewise.
(coshl): Likewise.
(expf): Likewise.
(expl): Likewise.
(fmodf): Likewise.
(fmodl): Likewise.
(hypot): Change condition to [__USE_XOPEN || __USE_ISOC99].
(j0f): Change condition to [__USE_MISC && __USE_ISOC99].
(j0l): Likewise.
(y0f): Likewise.
(y0l): Likewise.
(j1f): Likewise.
(j1l): Likewise.
(y1f): Likewise.
(y1l): Likewise.
(jnf): Likewise.
(jnl): Likewise.
(ynf): Likewise.
(ynl): Likewise.
(lgammaf_r): Condition declaration on [__USE_ISOC99].
(lgammal_r): Likewise.
(__lgamma_r_finite): New declaration.
(__lgammaf_r_finite): Likewise.
(__lgammal_r_finite): Likewise.
(lgamma): Use __lgamma_r_finite.
(lgammaf): Condition definition on [__USE_ISOC99]. Use
__lgammaf_r_finite.
(lgammal): Condition definition on [__USE_ISOC99]. Use
__lgammal_r_finite.
(gamma): Do not define for [!__USE_MISC && __USE_XOPEN2K]. Use
__lgamma_r_finite.
(gammaf): Condition definition on [__USE_ISOC99]. Use
__lgammaf_r_finite.
(gammal): Condition definition on [__USE_ISOC99]. Use
__lgammal_r_finite.
(logf): Condition declaration on [__USE_ISOC99].
(logl): Likewise.
(log10f): Likewise.
(log10l): Likewise.
(ldexpf): Likewise.
(ldexpl): Likewise.
(powf): Likewise.
(powl): Likewise.
(remainder): Condition declaration on [__USE_XOPEN_EXTENDED ||
__USE_ISOC99].
(remainderf): Condition declaration on [__USE_ISOC99].
(remainderl): Likewise.
(scalb): Do not declare for [!__USE_MISC && __USE_XOPEN2K8].
(scalbf): Change condition to [__USE_MISC && __USE_ISOC99].
(scalbl): Likewise.
(sinhf): Condition declaration on [__USE_ISOC99].
(sinhl): Likewise.
(sqrtf): Likewise.
(sqrtl): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 69 ++++++++++++++++
NEWS | 2 +-
math/bits/math-finite.h | 198 ++++++++++++++++++++++++++++++++---------------
3 files changed, 206 insertions(+), 63 deletions(-)
--
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19205] bits/math-finite.h conditions do not match math.h and bits/mathcalls.h
Date: Thu, 05 Nov 2015 00:50:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19205
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3bfee8beb8caa939020d942dfa405a3d98975749
commit 3bfee8beb8caa939020d942dfa405a3d98975749
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 5 00:48:57 2015 +0000
Make bits/math-finite.h conditions match other headers (bug 19205).
bits/math-finite.h declares -ffinite-math-only variants of various
functions under conditions not matching those under which the normal
versions are declared.
* math.h only ever includes bits/mathcalls.h to declare float and long
double functions if __USE_ISOC99, but bits/math-finite.h declares
some float functions regardless (long double ones are conditioned on
__MATH_DECLARE_LDOUBLE). (For C90 functions this isn't a
conformance bug because C90 reserves the float and long double
names, but is still contrary to good glibc practice. For some other
functions in older XSI standards it *is* a conformance bug.)
* Some functions are defined as inlines using lgamma_r functions under
conditions where those lgamma_r functions are not themselves
declared.
* hypot is declared under __USE_XOPEN || __USE_ISOC99 in
bits/mathcalls.h, __USE_ISOC99 only in bits/math-finite.h.
* float and long double versions of Bessel functions should be limited
to __USE_MISC (as in bug 18977).
* gamma should not be declared for __USE_XOPEN2K (as in bug 18967).
* remainder should be restricted to __USE_XOPEN_EXTENDED ||
__USE_ISOC99, not unconditional.
* scalb should not be declared for __USE_XOPEN2K8, and scalbf and
scalbl are non-POSIX (as in bug 18967).
This patch fixes all these issues (it doesn't seem worth splitting
them into separate patches or bugs). I put __USE_ISOC99 conditionals,
where needed, around both float and long double declarations, even
though formally redundant around the long double declarations because
__MATH_DECLARE_LDOUBLE isn't defined without __USE_ISOC99; it seemed
clearer that way. The missing declarations of lgamma_r functions are
dealt with by directly using declarations of __lgamma*_r_finite, in
the implementation namespace, rather than having the inlines rely on
asm redirection of lgamma*_r.
After this patch, there are some apparently redundant nested
__USE_ISOC99 conditionals in lgamma / gamma definitions. These
actually reflect a separate bug (the correct condition for the lgamma
inline functions to set signgam is __USE_MISC || __USE_XOPEN, the
condition under which signgam is declared, rather than disabling
setting it if __USE_ISOC99, which includes XSI POSIX versions for
which signgam *should* be set). They'll be fixed as part of a fix for
that bug, which will also add tests for these inlines. I've put a
note about more general conform/ test coverage for -ffinite-math-only
on
<https://sourceware.org/glibc/wiki/Development_Todo/Master#conformtest_improvements>,
alongside other options for which this is also relevant (some of which
have also had such bugs in the past relating to mismatched
conditionals).
I also intend to enable the main libm-test.inc tests for the
math-finite.h functions, but some other bugs in __*_finite need fixing
first.
[BZ #19205]
* math/bits/math-finite.h (acosf): Condition declaration on
[__USE_ISOC99].
(acosl): Likewise.
(acoshf): Likewise.
(acoshl): Likewise.
(asinf): Likewise.
(asinl): Likewise.
(atan2f): Likewise.
(atan2l): Likewise.
(atanhf): Likewise.
(atanhl): Likewise.
(coshf): Likewise.
(coshl): Likewise.
(expf): Likewise.
(expl): Likewise.
(fmodf): Likewise.
(fmodl): Likewise.
(hypot): Change condition to [__USE_XOPEN || __USE_ISOC99].
(j0f): Change condition to [__USE_MISC && __USE_ISOC99].
(j0l): Likewise.
(y0f): Likewise.
(y0l): Likewise.
(j1f): Likewise.
(j1l): Likewise.
(y1f): Likewise.
(y1l): Likewise.
(jnf): Likewise.
(jnl): Likewise.
(ynf): Likewise.
(ynl): Likewise.
(lgammaf_r): Condition declaration on [__USE_ISOC99].
(lgammal_r): Likewise.
(__lgamma_r_finite): New declaration.
(__lgammaf_r_finite): Likewise.
(__lgammal_r_finite): Likewise.
(lgamma): Use __lgamma_r_finite.
(lgammaf): Condition definition on [__USE_ISOC99]. Use
__lgammaf_r_finite.
(lgammal): Condition definition on [__USE_ISOC99]. Use
__lgammal_r_finite.
(gamma): Do not define for [!__USE_MISC && __USE_XOPEN2K]. Use
__lgamma_r_finite.
(gammaf): Condition definition on [__USE_ISOC99]. Use
__lgammaf_r_finite.
(gammal): Condition definition on [__USE_ISOC99]. Use
__lgammal_r_finite.
(logf): Condition declaration on [__USE_ISOC99].
(logl): Likewise.
(log10f): Likewise.
(log10l): Likewise.
(ldexpf): Likewise.
(ldexpl): Likewise.
(powf): Likewise.
(powl): Likewise.
(remainder): Condition declaration on [__USE_XOPEN_EXTENDED ||
__USE_ISOC99].
(remainderf): Condition declaration on [__USE_ISOC99].
(remainderl): Likewise.
(scalb): Do not declare for [!__USE_MISC && __USE_XOPEN2K8].
(scalbf): Change condition to [__USE_MISC && __USE_ISOC99].
(scalbl): Likewise.
(sinhf): Condition declaration on [__USE_ISOC99].
(sinhl): Likewise.
(sqrtf): Likewise.
(sqrtl): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 69 ++++++++++++++++
NEWS | 2 +-
math/bits/math-finite.h | 198 ++++++++++++++++++++++++++++++++---------------
3 files changed, 206 insertions(+), 63 deletions(-)
--
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19205] bits/math-finite.h conditions do not match math.h and bits/mathcalls.h
Date: Thu, 05 Nov 2015 00:51:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19205
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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>From glibc-bugs-return-30419-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 04:16:48 2015
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From: "zizztux at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/19207] New: Build failed with option that impact on binary format in CFLAGS
Date: Thu, 05 Nov 2015 04:16:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19207
Bug ID: 19207
Summary: Build failed with option that impact on binary format
in CFLAGS
Product: glibc
Version: 2.22
Status: NEW
Severity: minor
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: zizztux at gmail dot com
CC: carlos at redhat dot com
Target Milestone: ---
there are some CFLAGS options that impact on binary architecture.
for example, -m32 on 64bit compiler with multilib support.
$ CFLAGS="-m32" ./configure
configure script checks linker output format by calling gcc with
--print-output-format.
but, in configure script, CFLAGS value doesn't passed to gcc.
see below code.
-----
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker output format" >&5
$as_echo_n "checking linker output format... " >&6; }
if ${libc_cv_output_format+:} false; then :
$as_echo_n "(cached) " >&6
else
if libc_cv_output_format=`
${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&5`
then
:
else
libc_cv_output_format=
fi
test -n "$libc_cv_output_format" || libc_cv_output_format=unknown
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_output_format" >&5
$as_echo "$libc_cv_output_format" >&6; }
-----
Incorrectly detected output format is used to generate ld script (ex. libc.so,
...). This output format string is written to OUTPUT_FORMAT directive. So, in
remain build process, this raise linking failure.
Therefore, I think that configure script is fixed to pass CFLAGS value to gcc.
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>From glibc-bugs-return-30420-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 09:06:15 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug build/19207] Build failed with option that impact on binary format in CFLAGS
Date: Thu, 05 Nov 2015 09:06:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Please use CC="cc -m32" (and CXX="c++ -m32") instead.
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>From glibc-bugs-return-30421-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 14:33:02 2015
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Subject: [Bug dynamic-link/18251] SONAME missing when audit modules provides path
Date: Thu, 05 Nov 2015 14:33:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |fweimer at redhat dot com
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
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>From glibc-bugs-return-30422-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 16:22:18 2015
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19209] New: bits/math-finite.h wrongly maps ldexp to scalbn
Date: Thu, 05 Nov 2015 16:22:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19209
Bug ID: 19209
Summary: bits/math-finite.h wrongly maps ldexp to scalbn
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
bits/math-finite.h maps ldexp functions to corresponding scalbn functions.
This is (a) a namespace bug for C90, which has ldexp but not scalbn, and (b) in
any case useless, since the ldexp and scalbn functions have identical semantics
(for floating-point types with radix 2), and since the fix for bug 6803 are
actually aliases (presumably the mapping was based around the old bug of scalbn
not setting errno).
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>From glibc-bugs-return-30423-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 17:02:54 2015
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Subject: [Bug math/19209] bits/math-finite.h wrongly maps ldexp to scalbn
Date: Thu, 05 Nov 2015 17:02:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8fed86556b7e162d2926f0ba6a573ed193ff882f
commit 8fed86556b7e162d2926f0ba6a573ed193ff882f
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 5 17:00:31 2015 +0000
Don't redirect ldexp to scalbn in bits/math-finite.h (bug 19209).
bits/math-finite.h maps ldexp functions to corresponding scalbn
functions. This is (a) a namespace bug for C90, which has ldexp but
not scalbn, and (b) in any case useless, since the ldexp and scalbn
functions have identical semantics (for floating-point types with
radix 2), and since the fix for bug 6803 are actually aliases
(presumably the mapping was based around the old bug of scalbn not
setting errno). This patch removes the bogus redirections.
Tested for x86_64 and x86.
[BZ #19209]
* math/bits/math-finite.h (ldexp): Remove declaration.
(ldexpf): Likewise.
(ldexpl): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
NEWS | 2 +-
math/bits/math-finite.h | 9 ---------
3 files changed, 6 insertions(+), 10 deletions(-)
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>From glibc-bugs-return-30424-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 17:02:57 2015
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Subject: [Bug math/6803] scalb(), scalbln(), scalbn() do not set errno on overflow/underflow
Date: Thu, 05 Nov 2015 17:02:00 -0000
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--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8fed86556b7e162d2926f0ba6a573ed193ff882f
commit 8fed86556b7e162d2926f0ba6a573ed193ff882f
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 5 17:00:31 2015 +0000
Don't redirect ldexp to scalbn in bits/math-finite.h (bug 19209).
bits/math-finite.h maps ldexp functions to corresponding scalbn
functions. This is (a) a namespace bug for C90, which has ldexp but
not scalbn, and (b) in any case useless, since the ldexp and scalbn
functions have identical semantics (for floating-point types with
radix 2), and since the fix for bug 6803 are actually aliases
(presumably the mapping was based around the old bug of scalbn not
setting errno). This patch removes the bogus redirections.
Tested for x86_64 and x86.
[BZ #19209]
* math/bits/math-finite.h (ldexp): Remove declaration.
(ldexpf): Likewise.
(ldexpl): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
NEWS | 2 +-
math/bits/math-finite.h | 9 ---------
3 files changed, 6 insertions(+), 10 deletions(-)
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>From glibc-bugs-return-30425-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 17:03:06 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19209] bits/math-finite.h wrongly maps ldexp to scalbn
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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>From glibc-bugs-return-30426-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 05 17:23:27 2015
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Subject: [Bug math/19211] New: lgamma functions do not set signgam for -ffinite-math-only for C99-based standards
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https://sourceware.org/bugzilla/show_bug.cgi?id=19211
Bug ID: 19211
Summary: lgamma functions do not set signgam for
-ffinite-math-only for C99-based standards
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
The lgamma inline functions in bits/math-finite.h do not set signgam if
__USE_ISOC99, even when other feature test macros mean a standard such as XSI
POSIX is selected for which it should be set. (This is essentially the
opposite issue to bug 15421, the out-of-line versions setting signgam even when
they shouldn't.)
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Subject: [Bug libc/19212] New: features.h not -Wundef clean
Date: Thu, 05 Nov 2015 17:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19212
Bug ID: 19212
Summary: features.h not -Wundef clean
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
CC: drepper.fsp at gmail dot com
Target Milestone: ---
features.h is not clean with -Wundef (for the installed header, of course this
only appears with -Wsystem-headers). In ISO C standards modes, you get:
../include/features.h:227:36: error: "_XOPEN_SOURCE" is not defined
[-Werror=undef]
#if ((!defined __STRICT_ANSI__ || (_XOPEN_SOURCE - 0) >= 500) && \
^
../include/features.h:242:30: error: "_POSIX_C_SOURCE" is not defined
[-Werror=undef]
#if defined _POSIX_SOURCE || _POSIX_C_SOURCE >= 1 || defined _XOPEN_SOURCE
^
../include/features.h:250:6: error: "_POSIX_C_SOURCE" is not defined
[-Werror=undef]
#if (_POSIX_C_SOURCE - 0) >= 199309L
^
../include/features.h:254:6: error: "_POSIX_C_SOURCE" is not defined
[-Werror=undef]
#if (_POSIX_C_SOURCE - 0) >= 199506L
^
../include/features.h:258:6: error: "_POSIX_C_SOURCE" is not defined
[-Werror=undef]
#if (_POSIX_C_SOURCE - 0) >= 200112L
^
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19213] New: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-math-only
Date: Thu, 05 Nov 2015 21:18:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19213
Bug ID: 19213
Summary: [i386/x86_64] log* (1) incorrect zero sign for
-ffinite-math-only
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
For the -ffinite-math-only versions of various x86_64 and x86 log* functions, a
zero result from log* (1) is returned with incorrect sign in round-downward
mode. For example, for long double on x86_64:
Failure: Test: log_downward (0x1p+0)
Result:
is: -0.00000000000000000000e+00 -0x0.0000000000000000p+0
should be: 0.00000000000000000000e+00 0x0.0000000000000000p+0
difference: 0.00000000000000000000e+00 0x0.0000000000000000p+0
ulp : 0.0000
max.ulp : 2.0000
Failure: Test: log10_downward (0x1p+0)
Result:
is: -0.00000000000000000000e+00 -0x0.0000000000000000p+0
should be: 0.00000000000000000000e+00 0x0.0000000000000000p+0
difference: 0.00000000000000000000e+00 0x0.0000000000000000p+0
ulp : 0.0000
max.ulp : 2.0000
Failure: Test: log2_downward (0x1p+0)
Result:
is: -0.00000000000000000000e+00 -0x0.0000000000000000p+0
should be: 0.00000000000000000000e+00 0x0.0000000000000000p+0
difference: 0.00000000000000000000e+00 0x0.0000000000000000p+0
ulp : 0.0000
max.ulp : 1.0000
For long double on x86 (possibly also other formats when the i686 functions are
not used):
Failure: Test: log_downward (0x1p+0)
Result:
is: -0.00000000000000000000e+00 -0x0.0000000000000000p+0
should be: 0.00000000000000000000e+00 0x0.0000000000000000p+0
difference: 0.00000000000000000000e+00 0x0.0000000000000000p+0
ulp : 0.0000
max.ulp : 2.0000
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Subject: [Bug libc/19212] features.h not -Wundef clean
Date: Thu, 05 Nov 2015 21:20:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f248238cf43bd751db29e6f151d6da7645337ff5
commit f248238cf43bd751db29e6f151d6da7645337ff5
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 5 21:19:37 2015 +0000
Fix features.h for -Wundef (bug 19212).
features.h is not clean with -Wundef (for the installed header, of
course this only appears with -Wsystem-headers). In ISO C standards
modes, you get a series of warnings / errors relating to
_POSIX_C_SOURCE and _XOPEN_SOURCE not being defined when tested in
standards mode and uses #undef _GNU_SOURCE to avoid the default
_GNU_SOURCE from libc-symbols.h. This patch changes the relevant #if
conditionals to avoid these warnings / errors.
Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).
[BZ #19212]
* include/features.h [(_XOPEN_SOURCE - 0) >= 500]: Change
conditional to [defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) >=
500].
[_POSIX_C_SOURCE >= 1]: Change conditional to [defined
_POSIX_C_SOURCE && _POSIX_C_SOURCE >= 1].
[(_POSIX_C_SOURCE - 0) >= 199309L]: Change conditional to [defined
_POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199309L].
[(_POSIX_C_SOURCE - 0) >= 199506L]: Change conditional to [defined
_POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199506L].
[(_POSIX_C_SOURCE - 0) >= 200112L]: Change conditional to [defined
_POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200112L].
[(_POSIX_C_SOURCE - 0) >= 200809L]: Change conditional to [defined
_POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200809L].
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 15 +++++++++++++++
NEWS | 2 +-
include/features.h | 17 ++++++++++-------
3 files changed, 26 insertions(+), 8 deletions(-)
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Subject: [Bug libc/19212] features.h not -Wundef clean
Date: Thu, 05 Nov 2015 21:20:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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Subject: [Bug math/19211] lgamma functions do not set signgam for -ffinite-math-only for C99-based standards
Date: Thu, 05 Nov 2015 21:24:00 -0000
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=939fdd1c36dde8884543bc9c3b8506e76c9ff0e4
commit 939fdd1c36dde8884543bc9c3b8506e76c9ff0e4
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 5 21:23:07 2015 +0000
Fix finite-math-only lgamma functions signgam setting (bug 19211).
The lgamma inline functions in bits/math-finite.h do not set signgam
if __USE_ISOC99, even when other feature test macros mean a standard
such as XSI POSIX is selected for which it should be set. (This is
essentially the opposite issue to bug 15421, the out-of-line versions
setting signgam even when they shouldn't.)
This patch fixes those functions to use __USE_MISC || __USE_XOPEN as
the condition for when to set signgam, since it's the condition for
when math.h declares signgam. The legacy gamma* names are only
declared at all if __USE_MISC || __USE_XOPEN, so they just set signgam
unconditionally.
Tests for certain standards or not using _GNU_SOURCE cannot use
test-skeleton.c (this is a known issue noted on the wiki todo list).
Thus, the new tests that signgam remains not set in ISO C modes do not
use test-skeleton.c. They also define _ISOMAC to avoid running into
declarations in the internal include/ headers that only work in
_GNU_SOURCE mode.
Tested for x86_64 and x86.
[BZ #19211]
* math/bits/math-finite.h (lgamma): Set signgam if [__USE_MISC ||
__USE_XOPEN], not if [!__USE_ISOC99].
(lgammaf): Likewise.
(lgammal): Likewise.
(gamma): Set signgam unconditionally, not if [!__USE_ISOC99].
(gammaf): Likewise.
(gammal): Likewise.
* math/test-signgam-finite-c11.c: New file.
* math/test-signgam-finite-c99.c: Likewise.
* math/test-signgam-finite.c: Likewise.
* math/Makefile (tests): Add test-signgam-finite,
test-signgam-finite-c99 and test-signgam-finite-c11.
(CFLAGS-test-signgam-finite.c): New variable.
(CFLAGS-test-signgam-finite-c99.c): Likewise.
(CFLAGS-test-signgam-finite-c11.c): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 17 ++++++++++
NEWS | 2 +-
math/Makefile | 7 ++++-
math/bits/math-finite.h | 33 +++++---------------
math/test-signgam-finite-c11.c | 1 +
math/test-signgam-finite-c99.c | 65 ++++++++++++++++++++++++++++++++++++++++
math/test-signgam-finite.c | 65 ++++++++++++++++++++++++++++++++++++++++
7 files changed, 164 insertions(+), 26 deletions(-)
create mode 100644 math/test-signgam-finite-c11.c
create mode 100644 math/test-signgam-finite-c99.c
create mode 100644 math/test-signgam-finite.c
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Subject: [Bug math/15421] lgamma wrongly sets signgam for ISO C
Date: Thu, 05 Nov 2015 21:24:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=939fdd1c36dde8884543bc9c3b8506e76c9ff0e4
commit 939fdd1c36dde8884543bc9c3b8506e76c9ff0e4
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 5 21:23:07 2015 +0000
Fix finite-math-only lgamma functions signgam setting (bug 19211).
The lgamma inline functions in bits/math-finite.h do not set signgam
if __USE_ISOC99, even when other feature test macros mean a standard
such as XSI POSIX is selected for which it should be set. (This is
essentially the opposite issue to bug 15421, the out-of-line versions
setting signgam even when they shouldn't.)
This patch fixes those functions to use __USE_MISC || __USE_XOPEN as
the condition for when to set signgam, since it's the condition for
when math.h declares signgam. The legacy gamma* names are only
declared at all if __USE_MISC || __USE_XOPEN, so they just set signgam
unconditionally.
Tests for certain standards or not using _GNU_SOURCE cannot use
test-skeleton.c (this is a known issue noted on the wiki todo list).
Thus, the new tests that signgam remains not set in ISO C modes do not
use test-skeleton.c. They also define _ISOMAC to avoid running into
declarations in the internal include/ headers that only work in
_GNU_SOURCE mode.
Tested for x86_64 and x86.
[BZ #19211]
* math/bits/math-finite.h (lgamma): Set signgam if [__USE_MISC ||
__USE_XOPEN], not if [!__USE_ISOC99].
(lgammaf): Likewise.
(lgammal): Likewise.
(gamma): Set signgam unconditionally, not if [!__USE_ISOC99].
(gammaf): Likewise.
(gammal): Likewise.
* math/test-signgam-finite-c11.c: New file.
* math/test-signgam-finite-c99.c: Likewise.
* math/test-signgam-finite.c: Likewise.
* math/Makefile (tests): Add test-signgam-finite,
test-signgam-finite-c99 and test-signgam-finite-c11.
(CFLAGS-test-signgam-finite.c): New variable.
(CFLAGS-test-signgam-finite-c99.c): Likewise.
(CFLAGS-test-signgam-finite-c11.c): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 17 ++++++++++
NEWS | 2 +-
math/Makefile | 7 ++++-
math/bits/math-finite.h | 33 +++++---------------
math/test-signgam-finite-c11.c | 1 +
math/test-signgam-finite-c99.c | 65 ++++++++++++++++++++++++++++++++++++++++
math/test-signgam-finite.c | 65 ++++++++++++++++++++++++++++++++++++++++
7 files changed, 164 insertions(+), 26 deletions(-)
create mode 100644 math/test-signgam-finite-c11.c
create mode 100644 math/test-signgam-finite-c99.c
create mode 100644 math/test-signgam-finite.c
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19211] lgamma functions do not set signgam for -ffinite-math-only for C99-based standards
Date: Thu, 05 Nov 2015 21:24:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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Subject: [Bug math/19213] [i386/x86_64] log* (1) incorrect zero sign for -ffinite-math-only
Date: Thu, 05 Nov 2015 21:57:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=01189b083b8ce54fc568fd2ab0dd433d869ede0e
commit 01189b083b8ce54fc568fd2ab0dd433d869ede0e
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 5 21:56:31 2015 +0000
Fix i386/x86_64 log* (1) zero sign for -ffinite-math-only (bug 19213).
For the -ffinite-math-only versions of various x86_64 and x86 log*
functions, a zero result from log* (1) is returned with incorrect sign
in round-downward mode. This patch fixes this in a similar way to the
previous fixes for the non-*_finite versions of the functions.
Tested for x86_64 and x86 (including an i586 build), together with a
patch that will be applied separately to enable the main libm-test.inc
tests for the finite-math-only functions.
[BZ #19213]
* sysdeps/i386/fpu/e_log.S (__log_finite): Ensure +0 is always
returned for argument 1.
* sysdeps/i386/fpu/e_logf.S (__logf_finite): Likewise.
* sysdeps/i386/fpu/e_logl.S (__logl_finite): Likewise.
* sysdeps/i386/i686/fpu/e_logl.S (__logl_finite): Likewise.
* sysdeps/x86_64/fpu/e_log10l.S (__log10l_finite): Likewise.
* sysdeps/x86_64/fpu/e_log2l.S (__log2l_finite): Likewise.
* sysdeps/x86_64/fpu/e_logl.S (__logl_finite): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 10 ++++++++++
NEWS | 2 +-
sysdeps/i386/fpu/e_log.S | 8 +++++++-
sysdeps/i386/fpu/e_logf.S | 8 +++++++-
sysdeps/i386/fpu/e_logl.S | 8 +++++++-
sysdeps/i386/i686/fpu/e_logl.S | 8 +++++++-
sysdeps/x86_64/fpu/e_log10l.S | 8 +++++++-
sysdeps/x86_64/fpu/e_log2l.S | 8 +++++++-
sysdeps/x86_64/fpu/e_logl.S | 8 +++++++-
9 files changed, 60 insertions(+), 8 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19213] [i386/x86_64] log* (1) incorrect zero sign for -ffinite-math-only
Date: Thu, 05 Nov 2015 21:58:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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>From glibc-bugs-return-30436-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 06 04:52:43 2015
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From: "amit.pawar at amd dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19214] New: Family and model identification for AMD CPU's are incorrect.
Date: Fri, 06 Nov 2015 04:52:00 -0000
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Bug ID: 19214
Summary: Family and model identification for AMD CPU's are
incorrect.
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: amit.pawar at amd dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Currently family and model detection for AMD CPU's are incorrect in GLBIC..
When tested on "AMD Phenom(tm)" processor, GLIBC trunk identifies family=15 and
model=5 but the output of "cat /proc/cpuinfo" shows family=16 and model=5. This
case is only seen when family value >= 15. Similarly for family=15, GLIBC
incorrectly identifies model nos.
---------------------
Breakpoint 1, __libc_start_main (main=0x400490 <main>, argc=1,
argv=0x7fffffffe0e8, init=0x4005a0 <__libc_csu_init>,
fini=0x400610 <__libc_csu_fini>, rtld_fini=0x7ffff7de90f0 <_dl_fini>,
stack_end=0x7fffffffe0d8) at ../csu/libc-start.c:134
134 {
(gdb) p __get_cpu_features()
$1 = (const struct cpu_features *) 0x7ffff7ffccf0 <_rtld_local_ro+112>
(gdb) p $1[0]
$2 = {kind = arch_kind_amd, max_cpuid = 5, cpuid = {{eax = 1052499, ebx =
33818624, ecx = 8396809, edx = 395049983}, {eax = 0, ebx = 0,
ecx = 0, edx = 0}, {eax = 1052499, ebx = 536878593, ecx = 538623, edx =
4023647231}}, family = 15, model = 5, feature = {49152}}
(gdb) quit
A debugging session is active.
Inferior 1 [process 20352] will be killed.
Quit anyway? (y or n) y
user@HP-ProBook-6455b:~$ cat /proc/cpuinfo | grep family
cpu family : 16
cpu family : 16
cpu family : 16
cpu family : 16
--------------------------
In future it may help in choosing the right string and memory routines based on
family and model values.
Document (link http://support.amd.com/TechDocs/25481.pdf) containing page no 10
describes the correct way of computing the AMD CPU family and models values.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/11460] fts has no LFS support
Date: Fri, 06 Nov 2015 10:49:00 -0000
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commit 8b7b7f75d91f7bac323dd6a370aeb3e9c5c4a7d5
Author: Mark Wielaard <mjw@redhat.com>
Date: Fri Nov 6 11:22:38 2015 +0100
Add LFS support for fts functions (bug 11460)
fts didn't have large-file support yet and fts.h had an #error preventing
usage when _FILE_OFFSET_BITS was set. This required nasty workarounds for
programs using fts with LFS. This patch implements LFS support for fts by
adding FTS64 and FTENT64 variants plus fts64 functions. Which are simple
aliases for 64bit off_t arches.
Also includes a simple testcase for some of the fts functions with or
without LFS enabled.
[BZ #11460]
* io/Makefile (routines): Add fts64.
(tests): Add tst-fts and tst-fts-lfs.
(CFLAGS-fts64.c): New.
* io/Versions (GLIBC_2.23): New.
* io/fts.c: Replace FTS with FTSOBJ, FTSENT with FTSENTRY. Use
function defines FTS_OPEN, FTS_CLOSE, FTS_READ, FTS_SET and
FTS_CHILDREN. Define FTSOBJ, FTSENTRY, FTS_OPEN, FTS_CLOSE,
FTS_READ, FTS_SET, FTS_CHILDREN, INO_T, STAT and LSTAT if necessary.
* io/fts.h (FTS64): New if _USE_LARGEFILE64.
(FTSENT64): Likewise.
(fts64_children): Likewise.
(fts64_close): Likewise.
(fts64_open): Likewise.
(fts64_read): Likewise.
(fts64_set): Likewise.
* io/fts64.c: New file.
* io/tst-fts.c: New test.
* io/tst-fts-lfs.c: Likewise.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist (GLIBC_2.23): Add
GLIBC_2.23, fts64_children, fts64_close, fts64_open, fts64_read and
fts64_set.
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
* sysdeps/wordsize-64/fts.c: New file.
* sysdeps/wordsize-64/fts64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/fts.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/fts64.c: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/fts.c: likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/fts64.c: likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 60 +++++
NEWS | 4 +
io/Makefile | 5 +-
io/Versions | 3 +
io/fts.c | 148 ++++++++-----
io/fts.h | 96 ++++++++-
io/fts64.c | 30 +++
io/tst-fts-lfs.c | 2 +
io/tst-fts.c | 231 ++++++++++++++++++++
sysdeps/unix/sysv/linux/aarch64/libc.abilist | 7 +
sysdeps/unix/sysv/linux/alpha/libc.abilist | 7 +
sysdeps/unix/sysv/linux/arm/libc.abilist | 7 +
sysdeps/unix/sysv/linux/hppa/libc.abilist | 7 +
sysdeps/unix/sysv/linux/i386/libc.abilist | 7 +
sysdeps/unix/sysv/linux/ia64/libc.abilist | 7 +
sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist | 7 +
sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist | 7 +
sysdeps/unix/sysv/linux/microblaze/libc.abilist | 7 +
.../unix/sysv/linux/mips/mips32/fpu/libc.abilist | 7 +
.../unix/sysv/linux/mips/mips32/nofpu/libc.abilist | 7 +
.../unix/sysv/linux/mips/mips64/n32/libc.abilist | 7 +
sysdeps/unix/sysv/linux/mips/mips64/n64/fts.c | 1 +
sysdeps/unix/sysv/linux/mips/mips64/n64/fts64.c | 1 +
.../unix/sysv/linux/mips/mips64/n64/libc.abilist | 7 +
sysdeps/unix/sysv/linux/nios2/libc.abilist | 7 +
.../sysv/linux/powerpc/powerpc32/fpu/libc.abilist | 7 +
.../linux/powerpc/powerpc32/nofpu/libc.abilist | 7 +
.../sysv/linux/powerpc/powerpc64/libc-le.abilist | 7 +
.../unix/sysv/linux/powerpc/powerpc64/libc.abilist | 7 +
sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist | 7 +
sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist | 7 +
sysdeps/unix/sysv/linux/sh/libc.abilist | 7 +
sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist | 7 +
sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist | 7 +
.../sysv/linux/tile/tilegx/tilegx32/libc.abilist | 7 +
.../sysv/linux/tile/tilegx/tilegx64/libc.abilist | 7 +
sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist | 7 +
sysdeps/unix/sysv/linux/x86_64/64/libc.abilist | 7 +
sysdeps/unix/sysv/linux/x86_64/x32/fts.c | 1 +
sysdeps/unix/sysv/linux/x86_64/x32/fts64.c | 1 +
sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist | 7 +
sysdeps/wordsize-64/fts.c | 19 ++
sysdeps/wordsize-64/fts64.c | 1 +
43 files changed, 733 insertions(+), 66 deletions(-)
create mode 100644 io/fts64.c
create mode 100644 io/tst-fts-lfs.c
create mode 100644 io/tst-fts.c
create mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/fts.c
create mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/fts64.c
create mode 100644 sysdeps/unix/sysv/linux/x86_64/x32/fts.c
create mode 100644 sysdeps/unix/sysv/linux/x86_64/x32/fts64.c
create mode 100644 sysdeps/wordsize-64/fts.c
create mode 100644 sysdeps/wordsize-64/fts64.c
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/11460] fts has no LFS support
Date: Fri, 06 Nov 2015 10:52:00 -0000
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Mark Wielaard <mjw at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
Severity|normal |enhancement
--- Comment #6 from Mark Wielaard <mjw at redhat dot com> ---
Fixed pushed to master (2.23)
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To: glibc-bugs@sourceware.org
Subject: [Bug build/19207] Build failed with option that impact on binary format in CFLAGS
Date: Fri, 06 Nov 2015 12:22:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
CC| |fweimer at redhat dot com
Flags| |security-
--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
SeungRyeol Lee, does Andreas' suggestion work for you?
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19178] ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses prelink
Date: Sat, 07 Nov 2015 14:34:00 -0000
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--- Comment #14 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via f3d18efb8a720121066dc3401e822043beb98cde (commit)
from d699ab25d32768aaad899f9ff1e668be62c448d2 (commit)
Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f3d18efb8a720121066dc3401e822043beb98cde
commit f3d18efb8a720121066dc3401e822043beb98cde
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Sat Nov 7 06:32:30 2015 -0800
Keep only ELF_RTYPE_CLASS_{PLT|COPY} bits for prelink
prelink runs ld.so with the environment variable LD_TRACE_PRELINKING
set to dump the relocation type class from _dl_debug_bindings. prelink
has the following relocation type classes:
#define RTYPE_CLASS_VALID 8
#define RTYPE_CLASS_PLT (8|1)
#define RTYPE_CLASS_COPY (8|2)
#define RTYPE_CLASS_TLS (8|4)
where ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA has a conflict with
RTYPE_CLASS_TLS.
Since prelink only uses ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY
bits, we should clear the other bits when the DL_DEBUG_PRELINK bit is
set.
[BZ #19178]
* elf/dl-lookup.c (RTYPE_CLASS_VALID): New.
(RTYPE_CLASS_PLT): Likewise.
(RTYPE_CLASS_COPY): Likewise.
(RTYPE_CLASS_TLS): Likewise.
(_dl_debug_bindings): Use RTYPE_CLASS_TLS and RTYPE_CLASS_VALID
to set relocation type class for DL_DEBUG_PRELINK. Keep only
ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY bits for
DL_DEBUG_PRELINK.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 12 ++++++++++++
elf/dl-lookup.c | 21 +++++++++++++++++++--
2 files changed, 31 insertions(+), 2 deletions(-)
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Subject: [Bug dynamic-link/19178] ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses prelink
Date: Sat, 07 Nov 2015 14:43:00 -0000
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--- Comment #15 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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The branch, hjl/pr19178/master has been created
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=40d3a8ab0ba5a2bcb1563becaec712ed031d2ebf
commit 40d3a8ab0ba5a2bcb1563becaec712ed031d2ebf
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Sat Nov 7 06:35:09 2015 -0800
Add a test for prelink output
This test applies to i386 and x86_64 which set R_386_GLOB_DAT and
R_X86_64_GLOB_DAT to ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA.
[BZ #19178]
* sysdeps/x86/Makefile (tests): Add tst-prelink.
(tst-prelink-ENV): New.
($(objpfx)tst-prelink-conflict.out): Likewise.
($(objpfx)tst-prelink-cmp.out): Likewise.
(tests-special): Add $(objpfx)tst-prelink-cmp.out.
* sysdeps/x86/tst-prelink.c: New file.
* sysdeps/x86/tst-prelink.exp: Likewise.
-----------------------------------------------------------------------
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19219] New: GLIBC build fails for ia64 with missing __nearbyintl
Date: Sun, 08 Nov 2015 22:34:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19219
Bug ID: 19219
Summary: GLIBC build fails for ia64 with missing __nearbyintl
Product: glibc
Version: 2.23
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: adhemerval.zanella at linaro dot org
CC: drepper.fsp at gmail dot com
Target Milestone: ---
GLIBC fails to build for ia64 since commit
d0d286d32dda654f8983e8fe77bca0a2cda2051b. It is because this commit uses the
internal definition for nearbyintl, but ia64 specialized implementation
(./sysdeps/ia64/fpu/s_nearbyintl.S) does not define it.
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Subject: [Bug localedata/19220] New: The LC_ADDRESS/postal_fmt values for China and Indian are not correct
Date: Mon, 09 Nov 2015 09:31:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19220
Bug ID: 19220
Summary: The LC_ADDRESS/postal_fmt values for China and Indian
are not correct
Product: glibc
Version: 2.21
Status: NEW
Severity: normal
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: enwei.zhang at canonical dot com
CC: libc-locales at sourceware dot org
Target Milestone: ---
For China, the current LC_ADDRESS is "%c%N%T%N%s %h %e %r%N%b%N%d%N%f%N%a%N"
In China, the word "Town" is not equal to City. It is an administrative unit
between County and Village. Maybe %S should be used.
For Indian, the current LC_ADDRESS is "%z%c%T%s%b%e%r", it is not correct.
The correct one may be "%b%f%r%s%e%T%z%S%c"
Thank you.
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Subject: [Bug network/12926] getaddrinfo()/make_request() may spin forever
Date: Mon, 09 Nov 2015 11:50:00 -0000
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--- Comment #17 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2eecc8afd02d8c65cf098cbae4de87f332dc21bd
commit 2eecc8afd02d8c65cf098cbae4de87f332dc21bd
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Nov 9 12:48:41 2015 +0100
Terminate process on invalid netlink response from kernel [BZ #12926]
The recvmsg system calls for netlink sockets have been particularly
prone to picking up unrelated data after a file descriptor race
(where the descriptor is closed and reopened concurrently in a
multi-threaded process, as the result of a file descriptor
management issue elsewhere). This commit adds additional error
checking and aborts the process if a datagram of unexpected length
(without the netlink header) is received, or an error code which
cannot happen due to the way the netlink socket is used.
[BZ #12926]
Terminate process on invalid netlink response.
* sysdeps/unix/sysv/linux/netlinkaccess.h
(__netlink_assert_response): Declare.
* sysdeps/unix/sysv/linux/netlink_assert_response.c: New file.
* sysdeps/unix/sysv/linux/Makefile [$(subdir) == inet]
(sysdep_routines): Add netlink_assert_response.
* sysdeps/unix/sysv/linux/check_native.c (__check_native): Call
__netlink_assert_response.
* sysdeps/unix/sysv/linux/check_pf.c (make_request): Likewise.
* sysdeps/unix/sysv/linux/ifaddrs.c (__netlink_request): Likewise.
* sysdeps/unix/sysv/linux/Versions (GLIBC_PRIVATE): Add
__netlink_assert_response.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 16 +++
NEWS | 8 ++
sysdeps/unix/sysv/linux/Makefile | 1 +
sysdeps/unix/sysv/linux/Versions | 2 +
sysdeps/unix/sysv/linux/check_native.c | 2 +
sysdeps/unix/sysv/linux/check_pf.c | 4 +-
sysdeps/unix/sysv/linux/ifaddrs.c | 1 +
sysdeps/unix/sysv/linux/netlink_assert_response.c | 106 +++++++++++++++++++++
sysdeps/unix/sysv/linux/netlinkaccess.h | 6 +
9 files changed, 145 insertions(+), 1 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/netlink_assert_response.c
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>From glibc-bugs-return-30445-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 09 11:54:00 2015
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/12926] getaddrinfo()/make_request() may spin forever
Date: Mon, 09 Nov 2015 11:54:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
Flags|security? |security-
--- Comment #18 from Florian Weimer <fweimer at redhat dot com> ---
“Fixed” again for 2.23. The fix just adds better diagnostics.
This is not a security bug because it is not really a glibc bug, and we do not
have evidence of a kernel bug. It is either an application bug (see comment
#1) or another glibc bug already treated as a security bug (see comment #12).
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>From glibc-bugs-return-30446-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 09 13:03:36 2015
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19178] ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses prelink
Date: Mon, 09 Nov 2015 13:03:00 -0000
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--- Comment #16 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Sat, 7 Nov 2015, cvs-commit at gcc dot gnu.org wrote:
> commit f3d18efb8a720121066dc3401e822043beb98cde
> Author: H.J. Lu <hjl.tools@gmail.com>
> Date: Sat Nov 7 06:32:30 2015 -0800
>
> Keep only ELF_RTYPE_CLASS_{PLT|COPY} bits for prelink
Is this a full fix for the bug? If so, you need to close the bug as fixed
with milestone set to 2.23. If committing to master a patch that is
relevant to a bug but is not a full fix for it, please say explicitly in
the commit message that it's not a full fix, as requested in
<https://sourceware.org/ml/libc-alpha/2015-11/msg00096.html>, so people
don't need to chase things up.
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Subject: [Bug dynamic-link/19178] ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses prelink
Date: Mon, 09 Nov 2015 14:44:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |2.22
--- Comment #17 from H.J. Lu <hjl.tools at gmail dot com> ---
I posted a patch to add a testcase:
https://sourceware.org/ml/libc-alpha/2015-11/msg00141.html
I will close this bug after testcase is checked in and both patches
are backported to 2.22.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19178] ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses prelink
Date: Mon, 09 Nov 2015 16:29:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|2.22 |---
--- Comment #18 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
The milestone cannot be 2.22 if the fix wasn't in the original 2.22 release.
See <https://sourceware.org/ml/libc-alpha/2015-11/msg00096.html>: milestones
reflect the first mainline release with the fix, and the list of fixed bugs in
NEWS must be updated manually on release branches.
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Subject: [Bug dynamic-link/18251] SONAME missing when audit modules provides path
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commit a1b85ae88b1a664e93ca0182c82f7763dd5a1754
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Nov 9 16:52:31 2015 +0100
ld.so: Add original DSO name if overridden by audit module [BZ #18251]
* elf/dl-load.c (_dl_map_object_from_fd): Add additional parameter
for original name of the DSO. Add it to the name list of the DSO
if it is actually given.
(_dl_map_object): Keep track of whether an audit module rewrote
the file name. If yes, pass the original name to
_dl_map_object_from_fd in a new parameter, otherwise NULL. When
debugging is enabled, log the change of the file name.
* sysdeps/mach/hur/dl-sysdep.c: Adjust commented-out call to
_dl_map_object_from_fd.
* elf/Makefile: Build and run tst-audit11 and tst-audit12.
* elf/tst-audit11.c: New file
* elf/tst-auditmod11.c: New file.
* elf/tst-audit11mod1.c: New file.
* elf/tst-audit11mod2.c: New file.
* elf/tst-audit11mod2.map: New file.
* elf/tst-audit12.c: New file
* elf/tst-auditmod12.c: New file.
* elf/tst-audit12mod1.c: New file.
* elf/tst-audit12mod2.c: New file.
* elf/tst-audit12mod2.map: New file.
* elf/tst-audit12mod3.c: New file.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 24 ++++++++++++++++++++
elf/Makefile | 18 +++++++++++++-
elf/dl-load.c | 33 +++++++++++++++++++++++----
elf/tst-audit11.c | 36 ++++++++++++++++++++++++++++++
elf/tst-audit11mod1.c | 24 ++++++++++++++++++++
elf/tst-audit11mod2.c | 23 +++++++++++++++++++
elf/tst-audit11mod2.map | 22 ++++++++++++++++++
elf/tst-audit12.c | 49 +++++++++++++++++++++++++++++++++++++++++
elf/tst-audit12mod1.c | 24 ++++++++++++++++++++
elf/tst-audit12mod2.c | 23 +++++++++++++++++++
elf/tst-audit12mod2.map | 22 ++++++++++++++++++
elf/tst-audit12mod3.c | 23 +++++++++++++++++++
elf/tst-auditmod11.c | 39 ++++++++++++++++++++++++++++++++
elf/tst-auditmod12.c | 43 ++++++++++++++++++++++++++++++++++++
sysdeps/mach/hurd/dl-sysdep.c | 2 +-
15 files changed, 397 insertions(+), 8 deletions(-)
create mode 100644 elf/tst-audit11.c
create mode 100644 elf/tst-audit11mod1.c
create mode 100644 elf/tst-audit11mod2.c
create mode 100644 elf/tst-audit11mod2.map
create mode 100644 elf/tst-audit12.c
create mode 100644 elf/tst-audit12mod1.c
create mode 100644 elf/tst-audit12mod2.c
create mode 100644 elf/tst-audit12mod2.map
create mode 100644 elf/tst-audit12mod3.c
create mode 100644 elf/tst-auditmod11.c
create mode 100644 elf/tst-auditmod12.c
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>From glibc-bugs-return-30450-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 09 17:06:37 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/18251] SONAME missing when audit modules provides path
Date: Mon, 09 Nov 2015 17:06:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for 2.23.
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>From glibc-bugs-return-30451-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 10 10:56:44 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug localedata/15578] kk_KZ: various updates
Date: Tue, 10 Nov 2015 10:56:00 -0000
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--- Comment #8 from Baurzhan Muftakhidinov <baurthefirst at gmail dot com> ---
I sincerely hope that pinging once a week is not annoying,
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>From glibc-bugs-return-30452-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 10 12:58:47 2015
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19219] GLIBC build fails for ia64 with missing __nearbyintl
Date: Tue, 10 Nov 2015 12:58:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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from 2fee269248c6ef303569d9ac8fec3a27676520e0 (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=71bbdde7f53951f6a1d59492f36f80769090a8b3
commit 71bbdde7f53951f6a1d59492f36f80769090a8b3
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Nov 2 15:19:45 2015 -0200
Fix nearbyintl linkage for ia64 (bug 19219)
GLIBC fails to build for ia64 since commit
d0d286d32dda654f8983e8fe77bca0a2cda2051b.
It is because this commit uses the internal definition for nearbyintl,
but ia64 specialized implementation (sysdeps/ia64/fpu/s_nearbyintl.S)
does not define it.
Tested with a ia64 build.
[BZ #19219]
* sysdeps/ia64/fpu/s_nearbyintl.S (__nearbyint): Define and
weak_alias to nearbyintl.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
sysdeps/ia64/fpu/s_nearbyintl.S | 5 +++--
2 files changed, 9 insertions(+), 2 deletions(-)
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>From glibc-bugs-return-30453-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 10 13:14:14 2015
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From: "304702903 at qq dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19226] New: about getopt_long
Date: Tue, 10 Nov 2015 13:14:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19226
Bug ID: 19226
Summary: about getopt_long
Product: glibc
Version: 2.17
Status: NEW
Severity: enhancement
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: 304702903 at qq dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
centos/rhel 7.
man 3 getopt_long,there is a sample code
but getopt_long cant not find this bad command: "--" is invalid.
How can I detect "--" is invalid string? any advice?
[gg@wq test]$ ./getopt_long_man -c 1
option c with value '1'
[gg@wqtest]$ ./getopt_long_man -c 1 --
option c with value '1'
[gg@wqtest]$
[gg@wqtest]$
sample code from man page:
#include <stdio.h> /* for printf */
#include <stdlib.h> /* for exit */
#include <getopt.h>
int
main(int argc, char **argv)
{
int c;
int digit_optind = 0;
while (1) {
int this_option_optind = optind ? optind : 1;
int option_index = 0;
static struct option long_options[] = {
{"add", required_argument, 0, 0 },
{"append", no_argument, 0, 0 },
{"delete", required_argument, 0, 0 },
{"verbose", no_argument, 0, 0 },
{"create", required_argument, 0, 'c'},
{"file", required_argument, 0, 0 },
{0, 0, 0, 0 }
};
c = getopt_long(argc, argv, "abc:d:012",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 0:
printf("option %s", long_options[option_index].name);
if (optarg)
printf(" with arg %s", optarg);
printf("\n");
break;
case '0':
case '1':
case '2':
if (digit_optind != 0 && digit_optind != this_option_optind)
printf("digits occur in two different argv-elements.\n");
digit_optind = this_option_optind;
printf("option %c\n", c);
break;
case 'a':
printf("option a\n");
break;
case 'b':
printf("option b\n");
break;
case 'c':
printf("option c with value '%s'\n", optarg);
break;
case 'd':
printf("option d with value '%s'\n", optarg);
break;
case '?':
break;
default:
printf("?? getopt returned character code 0%o ??\n", c);
}
}
if (optind < argc) {
printf("non-option ARGV-elements: ");
while (optind < argc)
printf("%s ", argv[optind++]);
printf("\n");
}
exit(EXIT_SUCCESS);
}
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/19226] about getopt_long
Date: Tue, 10 Nov 2015 13:17:00 -0000
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What |Removed |Added
----------------------------------------------------------------------------
CC| |304702903 at qq dot com,
| |gotom at debian dot or.jp
Assignee|unassigned at sourceware dot org |roland at gnu dot org
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19219] GLIBC build fails for ia64 with missing __nearbyintl
Date: Tue, 10 Nov 2015 13:24:00 -0000
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed by 71bbdde7f53951f6a1d59492f36f80769090a8b3.
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19226] about getopt_long
Date: Tue, 10 Nov 2015 16:31:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
"--" always means the end of the options, so that anything following is a
non-option argument even if it starts with "-". It is never invalid.
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Subject: [Bug localedata/15578] kk_KZ: various updates
Date: Tue, 10 Nov 2015 16:31:00 -0000
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--- Comment #9 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Pings should be on libc-alpha not in Bugzilla, in reply to the patch
submission and giving its URL. Once a week is reasonable.
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Subject: [Bug dynamic-link/19178] ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses prelink
Date: Tue, 10 Nov 2015 21:01:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19178
--- Comment #19 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=fe534fe8980fa214c410e3661a4216e781073353
commit fe534fe8980fa214c410e3661a4216e781073353
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Nov 10 12:27:24 2015 -0800
Add a test for prelink output
This test applies to i386 and x86_64 which set R_386_GLOB_DAT and
R_X86_64_GLOB_DAT to ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA.
[BZ #19178]
* sysdeps/x86/Makefile (tests): Add tst-prelink.
(tst-prelink-ENV): New.
($(objpfx)tst-prelink-conflict.out): Likewise.
($(objpfx)tst-prelink-cmp.out): Likewise.
(tests-special): Add $(objpfx)tst-prelink-cmp.out.
* sysdeps/x86/tst-prelink.c: New file.
* sysdeps/x86/tst-prelink.exp: Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 11 +++++++++++
sysdeps/x86/Makefile | 15 +++++++++++++++
sysdeps/{x86_64/ifuncmain8.c => x86/tst-prelink.c} | 10 ++++------
sysdeps/x86/tst-prelink.exp | 1 +
4 files changed, 31 insertions(+), 6 deletions(-)
copy sysdeps/{x86_64/ifuncmain8.c => x86/tst-prelink.c} (86%)
create mode 100644 sysdeps/x86/tst-prelink.exp
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Subject: [Bug dynamic-link/19178] ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses prelink
Date: Tue, 10 Nov 2015 21:46:00 -0000
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--- Comment #20 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3cdd4ce75bc4d24aca37edc3ecec2a8890ce2551
commit 3cdd4ce75bc4d24aca37edc3ecec2a8890ce2551
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Nov 10 12:27:24 2015 -0800
Add a test for prelink output
This test applies to i386 and x86_64 which set R_386_GLOB_DAT and
R_X86_64_GLOB_DAT to ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA.
[BZ #19178]
* sysdeps/x86/Makefile (tests): Add tst-prelink.
(tst-prelink-ENV): New.
($(objpfx)tst-prelink-conflict.out): Likewise.
($(objpfx)tst-prelink-cmp.out): Likewise.
(tests-special): Add $(objpfx)tst-prelink-cmp.out.
* sysdeps/x86/tst-prelink.c: New file.
* sysdeps/x86/tst-prelink.exp: Likewise.
(cherry picked from commit fe534fe8980fa214c410e3661a4216e781073353)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=387011e0b6f9cbefd26691f0df8ce76bb7ddfa03
commit 387011e0b6f9cbefd26691f0df8ce76bb7ddfa03
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Sat Nov 7 06:32:30 2015 -0800
Keep only ELF_RTYPE_CLASS_{PLT|COPY} bits for prelink
prelink runs ld.so with the environment variable LD_TRACE_PRELINKING
set to dump the relocation type class from _dl_debug_bindings. prelink
has the following relocation type classes:
#define RTYPE_CLASS_VALID 8
#define RTYPE_CLASS_PLT (8|1)
#define RTYPE_CLASS_COPY (8|2)
#define RTYPE_CLASS_TLS (8|4)
where ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA has a conflict with
RTYPE_CLASS_TLS.
Since prelink only uses ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY
bits, we should clear the other bits when the DL_DEBUG_PRELINK bit is
set.
[BZ #19178]
* elf/dl-lookup.c (RTYPE_CLASS_VALID): New.
(RTYPE_CLASS_PLT): Likewise.
(RTYPE_CLASS_COPY): Likewise.
(RTYPE_CLASS_TLS): Likewise.
(_dl_debug_bindings): Use RTYPE_CLASS_TLS and RTYPE_CLASS_VALID
to set relocation type class for DL_DEBUG_PRELINK. Keep only
ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY bits for
DL_DEBUG_PRELINK.
(cherry picked from commit f3d18efb8a720121066dc3401e822043beb98cde)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 23 ++++++++++++++++++++++
NEWS | 2 +-
elf/dl-lookup.c | 21 ++++++++++++++++++-
sysdeps/x86/Makefile | 15 ++++++++++++++
stdlib/tst-system.c => sysdeps/x86/tst-prelink.c | 12 +++++-----
sysdeps/x86/tst-prelink.exp | 1 +
6 files changed, 65 insertions(+), 9 deletions(-)
copy stdlib/tst-system.c => sysdeps/x86/tst-prelink.c (80%)
create mode 100644 sysdeps/x86/tst-prelink.exp
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Subject: [Bug dynamic-link/19178] ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses prelink
Date: Tue, 10 Nov 2015 21:47:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #21 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for 2.23 and backported to release/2.22/master branch.
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>From glibc-bugs-return-30461-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 10 23:39:02 2015
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19228] New: [powerpc] nearbyint wrongly clears "inexact", leaves traps disabled
Date: Tue, 10 Nov 2015 23:39:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19228
Bug ID: 19228
Summary: [powerpc] nearbyint wrongly clears "inexact", leaves
traps disabled
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
Host: powerpc*-*-*
Similar to bug 15491 recently fixed for x86_64 / x86, the powerpc (both
powerpc32 and powerpc64) hard-float implementations of nearbyintf and nearbyint
wrongly clear an "inexact" exception that was raised before the function was
called. They also wrongly leave traps on "inexact" disabled if they were
enabled before the function was called.
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>From glibc-bugs-return-30463-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 11 00:07:29 2015
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Subject: [Bug math/15491] [i386/x86_64] x86 nearbyint implementations wrongly clear all exceptions
Date: Wed, 11 Nov 2015 00:07:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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The branch, master has been updated
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commit 71d1b0166b4ace0d804af2993b3815758b852efc
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Nov 11 00:06:09 2015 +0000
Fix powerpc nearbyint wrongly clearing "inexact" and leaving traps disabled
(bug 19228).
Similar to bug 15491 recently fixed for x86_64 / x86, the powerpc
(both powerpc32 and powerpc64) hard-float implementations of
nearbyintf and nearbyint wrongly clear an "inexact" exception that was
raised before the function was called; this shows up as failure of the
test math/test-nearbyint-except added when that bug was fixed. They
also wrongly leave traps on "inexact" disabled if they were enabled
before the function was called.
This patch fixes the bugs similar to how the x86 bug was fixed: saving
and restoring the whole floating-point state, both to restore the
original "inexact" flag state and to restore the original state of
whether traps on "inexact" were enabled. Because there's a convenient
point in the powerpc implementations to save state after any sNaN
arguments will have raised "invalid" but before "inexact" traps need
to be disabled, no special handling for "invalid" is needed as in the
x86 version.
Tested for powerpc64 and powerpc32, where it fixes the
math/test-nearbyint-except failure as well as fixing the new test
math/test-nearbyint-except-2 added by this patch. Also tested for
x86_64 and x86 that the new test passes.
If powerpc experts see a more efficient way of doing this
(e.g. instruction positioning that's better for pipelines on typical
processors) then of course followups optimizing the fix are welcome.
[BZ #19228]
* sysdeps/powerpc/powerpc32/fpu/s_nearbyint.S (__nearbyint): Save
and restore full floating-point state.
* sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S (__nearbyintf):
Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_nearbyint.S (__nearbyint):
Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S (__nearbyintf):
Likewise.
* math/test-nearbyint-except-2.c: New file.
* math/Makefile (tests): Add test-nearbyint-except-2.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 14 +++++++
math/Makefile | 3 +-
...earbyint-except.c => test-nearbyint-except-2.c} | 38 +++++++------------
sysdeps/powerpc/powerpc32/fpu/s_nearbyint.S | 6 ++-
sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S | 6 ++-
sysdeps/powerpc/powerpc64/fpu/s_nearbyint.S | 6 ++-
sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S | 6 ++-
7 files changed, 46 insertions(+), 33 deletions(-)
copy math/{test-nearbyint-except.c => test-nearbyint-except-2.c} (64%)
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19228] [powerpc] nearbyint wrongly clears "inexact", leaves traps disabled
Date: Wed, 11 Nov 2015 00:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19228
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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from fe534fe8980fa214c410e3661a4216e781073353 (commit)
Those revisions listed above that are new to this repository have
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=71d1b0166b4ace0d804af2993b3815758b852efc
commit 71d1b0166b4ace0d804af2993b3815758b852efc
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Nov 11 00:06:09 2015 +0000
Fix powerpc nearbyint wrongly clearing "inexact" and leaving traps disabled
(bug 19228).
Similar to bug 15491 recently fixed for x86_64 / x86, the powerpc
(both powerpc32 and powerpc64) hard-float implementations of
nearbyintf and nearbyint wrongly clear an "inexact" exception that was
raised before the function was called; this shows up as failure of the
test math/test-nearbyint-except added when that bug was fixed. They
also wrongly leave traps on "inexact" disabled if they were enabled
before the function was called.
This patch fixes the bugs similar to how the x86 bug was fixed: saving
and restoring the whole floating-point state, both to restore the
original "inexact" flag state and to restore the original state of
whether traps on "inexact" were enabled. Because there's a convenient
point in the powerpc implementations to save state after any sNaN
arguments will have raised "invalid" but before "inexact" traps need
to be disabled, no special handling for "invalid" is needed as in the
x86 version.
Tested for powerpc64 and powerpc32, where it fixes the
math/test-nearbyint-except failure as well as fixing the new test
math/test-nearbyint-except-2 added by this patch. Also tested for
x86_64 and x86 that the new test passes.
If powerpc experts see a more efficient way of doing this
(e.g. instruction positioning that's better for pipelines on typical
processors) then of course followups optimizing the fix are welcome.
[BZ #19228]
* sysdeps/powerpc/powerpc32/fpu/s_nearbyint.S (__nearbyint): Save
and restore full floating-point state.
* sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S (__nearbyintf):
Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_nearbyint.S (__nearbyint):
Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S (__nearbyintf):
Likewise.
* math/test-nearbyint-except-2.c: New file.
* math/Makefile (tests): Add test-nearbyint-except-2.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 14 +++++++
math/Makefile | 3 +-
...earbyint-except.c => test-nearbyint-except-2.c} | 38 +++++++------------
sysdeps/powerpc/powerpc32/fpu/s_nearbyint.S | 6 ++-
sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S | 6 ++-
sysdeps/powerpc/powerpc64/fpu/s_nearbyint.S | 6 ++-
sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S | 6 ++-
7 files changed, 46 insertions(+), 33 deletions(-)
copy math/{test-nearbyint-except.c => test-nearbyint-except-2.c} (64%)
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>From glibc-bugs-return-30464-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 11 00:08:28 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19228] [powerpc] nearbyint wrongly clears "inexact", leaves traps disabled
Date: Wed, 11 Nov 2015 00:08:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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>From glibc-bugs-return-30465-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 11 12:08:13 2015
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From: "shlomif at shlomifish dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19230] New: A stream using fmemopen() yields different and incorrect results than one using fopen or stdout.
Date: Wed, 11 Nov 2015 12:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19230
Bug ID: 19230
Summary: A stream using fmemopen() yields different and
incorrect results than one using fopen or stdout.
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: shlomif at shlomifish dot org
CC: drepper.fsp at gmail dot com
Target Milestone: ---
In this self-contained, reproducing, test case:
https://github.com/shlomif/possible-glibc-fmemopen-bug/
fmemopen() on glibc-2.22 (both the Mageia x86-64 v6 glibc and one built from
source) yields incorrect results after repetitively fprintf()ed into, and using
the #if's one can see that doing so to stdout or an fopen()ed file is working
fine. It works fine in glibc-2.21
I tried testing it on the glibc git master, but the built binary causes "ls" to
segfault and GNU make to be unusuable.
I'm going to attach a tar.xz tarball with the sources soon.
Regards,
-- Shlomi Fish
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>From glibc-bugs-return-30466-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 11 12:11:36 2015
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Subject: [Bug libc/19230] A stream using fmemopen() yields different and incorrect results than one using fopen or stdout.
Date: Wed, 11 Nov 2015 12:11:00 -0000
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--- Comment #1 from Shlomi Fish <shlomif at shlomifish dot org> ---
Created attachment 8776
--> https://sourceware.org/bugzilla/attachment.cgi?id=8776&action=edit
tarball of the sources.
This is a tar.xz tarball of the sources from the repository.
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>From glibc-bugs-return-30467-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 12 06:13:39 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug build/19207] Build failed with option that impact on binary format in CFLAGS
Date: Thu, 12 Nov 2015 06:13:00 -0000
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--- Comment #3 from SeungRyeol Lee <zizztux at gmail dot com> ---
No, it's not problem with CXX value.
as i mentioned, in code of checking the linker output format, CFLAGS value is
not included.
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Subject: [Bug build/19207] Build failed with option that impact on binary format in CFLAGS
Date: Thu, 12 Nov 2015 08:06:00 -0000
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--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to SeungRyeol Lee from comment #3)
> No, it's not problem with CXX value.
> as i mentioned, in code of checking the linker output format, CFLAGS value
> is not included.
Have you actually tried this? If you set the CC variable as Andreas suggested,
it will be used by the configure check you quoted.
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19235] New: [powerpc64] lround, lroundf, llround, llroundf spurious "inexact" exceptions
Date: Thu, 12 Nov 2015 14:32:00 -0000
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Bug ID: 19235
Summary: [powerpc64] lround, lroundf, llround, llroundf
spurious "inexact" exceptions
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
Host: powerpc64*-*-*
Similar to bug 19134 for powerpc32, the powerpc64 implementations of lround,
lroundf, llround, llroundf can raise spurious "inexact" exceptions for integer
arguments from adding 0.5 then converting to integer (this does not apply to
the power5+ version for double, which uses the frin instruction which is
defined never to raise "inexact"; I don't know why power5+ doesn't use that
version for float as well). For float:
Failure: lround (2097151.0): Exception "Inexact" set
Failure: lround_downward (2097151.0): Exception "Inexact" set
Failure: lround_towardzero (2097151.0): Exception "Inexact" set
Failure: lround_upward (2097151.0): Exception "Inexact" set
Failure: llround (2097151.0): Exception "Inexact" set
Failure: llround_downward (2097151.0): Exception "Inexact" set
Failure: llround_towardzero (2097151.0): Exception "Inexact" set
Failure: llround_upward (2097151.0): Exception "Inexact" set
For double:
Failure: lround (0x1p31): Exception "Inexact" set
Failure: lround (0x1p32): Exception "Inexact" set
Failure: lround (0x1p33): Exception "Inexact" set
Failure: lround (-0x1p31): Exception "Inexact" set
Failure: lround (-0x1p32): Exception "Inexact" set
Failure: lround (-0x1p33): Exception "Inexact" set
Failure: lround (0x7fffff80p0): Exception "Inexact" set
Failure: lround (0x7fffffffp0): Exception "Inexact" set
Failure: lround (-0x80000001p0): Exception "Inexact" set
Failure: lround (-0x80000100p0): Exception "Inexact" set
Failure: lround (2097151.0): Exception "Inexact" set
Failure: lround (8388608.0): Exception "Inexact" set
Failure: lround (16777216.0): Exception "Inexact" set
Failure: lround (2199023255552.0): Exception "Inexact" set
Failure: lround (4398046511104.0): Exception "Inexact" set
Failure: lround (281474976710656.0): Exception "Inexact" set
Failure: lround (0x1.fffffep+23): Exception "Inexact" set
Failure: lround (-0x1.fffffep+23): Exception "Inexact" set
Failure: lround (0x1.000002p+23): Exception "Inexact" set
Failure: lround (-0x1.000002p+23): Exception "Inexact" set
Failure: lround (0x1.fffffep+23): Exception "Inexact" set
Failure: lround (-0x1.fffffep+23): Exception "Inexact" set
and similar for llround and for other rounding modes.
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19134] [powerpc32] lround, lroundf spurious exceptions
Date: Thu, 12 Nov 2015 16:25:00 -0000
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=32b71ad358a949cbfe16d527f9a1015b95bb9baf
commit 32b71ad358a949cbfe16d527f9a1015b95bb9baf
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 12 16:24:00 2015 +0000
Fix powerpc64 lround, lroundf, llround, llroundf spurious "inexact"
exceptions (bug 19235).
Similar to bug 19134 for powerpc32, the powerpc64 implementations of
lround, lroundf, llround, llroundf can raise spurious "inexact"
exceptions for integer arguments from adding 0.5 then converting to
integer (this does not apply to the power5+ version for double, which
uses the frin instruction which is defined never to raise "inexact"; I
don't know why power5+ doesn't use that version for float as well).
This patch fixes the bug in a similar way to the powerpc32 bug, by
testing for integers (adding and subtracting 2^52 and comparing with
the value before that addition and subtraction) and not adding 0.5 in
that case.
The powerpc maintainers may wish to look at making power5+ / power6x /
power8 use frin for float lround / llround as well as for double,
unless there's some reason I've missed that this isn't beneficial.
Tested for powerpc64.
[BZ #19235]
* sysdeps/powerpc/powerpc64/fpu/s_llround.S (__llround): Do not
add 0.5 to integer arguments.
* sysdeps/powerpc/powerpc64/fpu/s_llroundf.S (__llroundf):
Likewise.
(.LC2): New object.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
sysdeps/powerpc/powerpc64/fpu/s_llround.S | 5 +++++
sysdeps/powerpc/powerpc64/fpu/s_llroundf.S | 8 ++++++++
3 files changed, 22 insertions(+), 0 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19235] [powerpc64] lround, lroundf, llround, llroundf spurious "inexact" exceptions
Date: Thu, 12 Nov 2015 16:25:00 -0000
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=32b71ad358a949cbfe16d527f9a1015b95bb9baf
commit 32b71ad358a949cbfe16d527f9a1015b95bb9baf
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 12 16:24:00 2015 +0000
Fix powerpc64 lround, lroundf, llround, llroundf spurious "inexact"
exceptions (bug 19235).
Similar to bug 19134 for powerpc32, the powerpc64 implementations of
lround, lroundf, llround, llroundf can raise spurious "inexact"
exceptions for integer arguments from adding 0.5 then converting to
integer (this does not apply to the power5+ version for double, which
uses the frin instruction which is defined never to raise "inexact"; I
don't know why power5+ doesn't use that version for float as well).
This patch fixes the bug in a similar way to the powerpc32 bug, by
testing for integers (adding and subtracting 2^52 and comparing with
the value before that addition and subtraction) and not adding 0.5 in
that case.
The powerpc maintainers may wish to look at making power5+ / power6x /
power8 use frin for float lround / llround as well as for double,
unless there's some reason I've missed that this isn't beneficial.
Tested for powerpc64.
[BZ #19235]
* sysdeps/powerpc/powerpc64/fpu/s_llround.S (__llround): Do not
add 0.5 to integer arguments.
* sysdeps/powerpc/powerpc64/fpu/s_llroundf.S (__llroundf):
Likewise.
(.LC2): New object.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
sysdeps/powerpc/powerpc64/fpu/s_llround.S | 5 +++++
sysdeps/powerpc/powerpc64/fpu/s_llroundf.S | 8 ++++++++
3 files changed, 22 insertions(+), 0 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19235] [powerpc64] lround, lroundf, llround, llroundf spurious "inexact" exceptions
Date: Thu, 12 Nov 2015 16:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19235
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19238] New: [powerpc] round, roundf spurious "inexact" for integer arguments
Date: Thu, 12 Nov 2015 18:34:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19238
Bug ID: 19238
Summary: [powerpc] round, roundf spurious "inexact" for integer
arguments
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
Host: powerpc*-*-*
The powerpc hard-float round and roundf functions, both 32-bit and 64-bit,
raise spurious "inexact" exceptions for integer arguments from adding 0.5 and
rounding to integer toward zero. (This bug is only about the exceptions for
integer arguments, which are not permitted by C99/C11; noninteger arguments
also should not raise "inexact" as per TS 18661-1, but that's bug 15479.)
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Subject: [Bug math/19238] [powerpc] round, roundf spurious "inexact" for integer arguments
Date: Thu, 12 Nov 2015 19:01:00 -0000
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This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=21378ae0d390c45ef382e8c95cc3593845ebb6ea
commit 21378ae0d390c45ef382e8c95cc3593845ebb6ea
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 12 19:00:06 2015 +0000
Fix powerpc round, roundf spurious "inexact" (bug 19238).
The powerpc hard-float round and roundf functions, both 32-bit and
64-bit, raise spurious "inexact" exceptions for integer arguments from
adding 0.5 and rounding to integer toward zero.
Since these functions already save and restore the rounding mode, it's
natural to make them restore the full floating-point state instead to
fix this bug, which this patch does. The save of the state is moved
after the first floating-point operation on the input so that any
"invalid" exceptions from signaling NaN inputs are properly
preserved. As a consequence of this approach to the fix, "inexact"
for noninteger arguments (disallowed by TS 18661-1 but not by C99/C11,
see bug 15479) is also avoided for these implementations; this is
*not* a general fix for bug 15479 since plenty of other
implementations of various functions still raise spurious "inexact"
for noninteger arguments.
This issue and fix do not apply to builds using power5+ versions of
round and roundf, which use the frin instruction and avoid "inexact"
exceptions that way.
This patch should get hard-float powerpc32 and powerpc64 (default
function implementations) back to a state where test-float and
test-double will pass after ulps regeneration.
Tested for powerpc32 and powerpc64.
[BZ #15479]
[BZ #19238]
* sysdeps/powerpc/powerpc32/fpu/s_round.S (__round): Save
floating-point state after first operation on input. Restore full
state rather than just rounding mode.
* sysdeps/powerpc/powerpc32/fpu/s_roundf.S (__roundf): Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_round.S (__round): Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_roundf.S (__roundf): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
sysdeps/powerpc/powerpc32/fpu/s_round.S | 9 ++++++---
sysdeps/powerpc/powerpc32/fpu/s_roundf.S | 9 ++++++---
sysdeps/powerpc/powerpc64/fpu/s_round.S | 9 ++++++---
sysdeps/powerpc/powerpc64/fpu/s_roundf.S | 9 ++++++---
5 files changed, 33 insertions(+), 12 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug math/15479] ceil, floor and round and trunc raise inexact exception
Date: Thu, 12 Nov 2015 19:01:00 -0000
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=21378ae0d390c45ef382e8c95cc3593845ebb6ea
commit 21378ae0d390c45ef382e8c95cc3593845ebb6ea
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 12 19:00:06 2015 +0000
Fix powerpc round, roundf spurious "inexact" (bug 19238).
The powerpc hard-float round and roundf functions, both 32-bit and
64-bit, raise spurious "inexact" exceptions for integer arguments from
adding 0.5 and rounding to integer toward zero.
Since these functions already save and restore the rounding mode, it's
natural to make them restore the full floating-point state instead to
fix this bug, which this patch does. The save of the state is moved
after the first floating-point operation on the input so that any
"invalid" exceptions from signaling NaN inputs are properly
preserved. As a consequence of this approach to the fix, "inexact"
for noninteger arguments (disallowed by TS 18661-1 but not by C99/C11,
see bug 15479) is also avoided for these implementations; this is
*not* a general fix for bug 15479 since plenty of other
implementations of various functions still raise spurious "inexact"
for noninteger arguments.
This issue and fix do not apply to builds using power5+ versions of
round and roundf, which use the frin instruction and avoid "inexact"
exceptions that way.
This patch should get hard-float powerpc32 and powerpc64 (default
function implementations) back to a state where test-float and
test-double will pass after ulps regeneration.
Tested for powerpc32 and powerpc64.
[BZ #15479]
[BZ #19238]
* sysdeps/powerpc/powerpc32/fpu/s_round.S (__round): Save
floating-point state after first operation on input. Restore full
state rather than just rounding mode.
* sysdeps/powerpc/powerpc32/fpu/s_roundf.S (__roundf): Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_round.S (__round): Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_roundf.S (__roundf): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
sysdeps/powerpc/powerpc32/fpu/s_round.S | 9 ++++++---
sysdeps/powerpc/powerpc32/fpu/s_roundf.S | 9 ++++++---
sysdeps/powerpc/powerpc64/fpu/s_round.S | 9 ++++++---
sysdeps/powerpc/powerpc64/fpu/s_roundf.S | 9 ++++++---
5 files changed, 33 insertions(+), 12 deletions(-)
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Subject: [Bug math/19238] [powerpc] round, roundf spurious "inexact" for integer arguments
Date: Thu, 12 Nov 2015 19:01:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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Subject: [Bug network/18419] add an option to resolv.conf to set all-zeros edns-client-subnet option
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Gowri <gvisweswaran at verisign dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gvisweswaran at verisign dot com
--- Comment #2 from Gowri <gvisweswaran at verisign dot com> ---
FYI, here is the patch to dig to possibly reuse the idea/code:
http://wilmer.gaa.st/edns-client-subnet/
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>From glibc-bugs-return-30478-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 13 04:00:55 2015
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Subject: [Bug network/18419] add an option to resolv.conf to set all-zeros edns-client-subnet option
Date: Fri, 13 Nov 2015 04:00:00 -0000
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--- Comment #3 from Daniel Kahn Gillmor <dkg at fifthhorseman dot net> ---
(In reply to Gowri from comment #2)
> FYI, here is the patch to dig to possibly reuse the idea/code:
> http://wilmer.gaa.st/edns-client-subnet/
fwiw, these patches add a client=<addr> option to dig, which is possibly more
complexity than we need to add in order to allow a simple opt-out.
for a simple opt-out, we could add a boolean option to resolv.conf named
"client-subnet-privacy". Then if there is a specific use case for a fancier
implementation, it could be added separately, with the "client-subnet-privacy"
becoming a shorthand for something like "client=0/0",
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>From glibc-bugs-return-30479-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 13 04:13:29 2015
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From: "gvisweswaran at verisign dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/18419] add an option to resolv.conf to set all-zeros edns-client-subnet option
Date: Fri, 13 Nov 2015 04:13:00 -0000
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--- Comment #4 from Gowri <gvisweswaran at verisign dot com> ---
Hi DKG,
That is what I did too except that I called it np-edns-client-subnet
since other options were prefixed with a ¹no' but I like
client-subnet-privacy better!
The dig code I was interested in is to see if I can reuse code to
construct and add an opt record correctly.
Quick diff so farŠ
diff --git a/resolv/res_init.c b/resolv/res_init.c
index 66561ff..5c424a4 100644
--- a/resolv/res_init.c
+++ b/resolv/res_init.c
@@ -525,6 +525,7 @@ res_setoptions(res_state statp, const char *options,
const char *source) {
{ STRnLEN ("rotate"), 0, RES_ROTATE },
{ STRnLEN ("no-check-names"), 0, RES_NOCHECKNAME },
{ STRnLEN ("edns0"), 0, RES_USE_EDNS0 },
+ { STRnLEN ("no-edns-client-subnet"), 0,
RES_NOEDNSCLIENTSUBNET },
{ STRnLEN ("single-request-reopen"), 0,
RES_SNGLKUPREOP },
{ STRnLEN ("single-request"), 0, RES_SNGLKUP },
{ STRnLEN ("no_tld_query"), 0, RES_NOTLDQUERY },
diff --git a/resolv/resolv.h b/resolv/resolv.h
index 53c3bba..708b62a 100644
--- a/resolv/resolv.h
+++ b/resolv/resolv.h
@@ -215,6 +215,7 @@ struct res_sym {
#define RES_NOIP6DOTINT 0x00080000 /* Do not use .ip6.int in
IPv6
reverse lookup */
#define RES_USE_EDNS0 0x00100000 /* Use EDNS0. */
+#define RES_NOEDNSCLIENTSUBNET 0x00100001 /* Hide edns-client-subnet
from resolver */
#define RES_SNGLKUP 0x00200000 /* one outstanding request at a
time */
#define RES_SNGLKUPREOP 0x00400000 /* -"-, but open new
socket for each
request */
On 11/12/15, 11:00 PM, "dkg at fifthhorseman dot net"
<sourceware-bugzilla@sourceware.org> wrote:
>https://sourceware.org/bugzilla/show_bug.cgi?id=18419
>
>--- Comment #3 from Daniel Kahn Gillmor <dkg at fifthhorseman dot net> ---
>(In reply to Gowri from comment #2)
>> FYI, here is the patch to dig to possibly reuse the idea/code:
>> http://wilmer.gaa.st/edns-client-subnet/
>
>fwiw, these patches add a client=<addr> option to dig, which is possibly
>more
>complexity than we need to add in order to allow a simple opt-out.
>
>for a simple opt-out, we could add a boolean option to resolv.conf named
>"client-subnet-privacy". Then if there is a specific use case for a
>fancier
>implementation, it could be added separately, with the
>"client-subnet-privacy"
>becoming a shorthand for something like "client=0/0",
>
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Subject: [Bug libc/19239] New: Including stdlib.h ends up with macros major and minor being defined
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Bug ID: 19239
Summary: Including stdlib.h ends up with macros major and minor
being defined
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
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Given the following code:
#include <fstream> //or iostream, sstream, istream, ostream
struct A {
unsigned major;
unsigned minor;
A(int major, int minor) :
major(major), minor(minor){ }
};
int main() {
A a1(1, 1);
return 0;
}
which is a reduced example from this Stackoverflow queston:
http://stackoverflow.com/q/33681093/1708801
Generates the following diagnostics
http://melpon.org/wandbox/permlink/Bex1ymr03yuu44Pd:
prog.cc:8:5: error: member initializer 'gnu_dev_major' does not name a
non-static data member or base class
major(major), minor(minor){ }
^~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/sys/sysmacros.h:67:21: note: expanded from macro
'major'
# define major(dev) gnu_dev_major (dev)
^~~~~~~~~~~~~~~~~~~
prog.cc:8:19: error: member initializer 'gnu_dev_minor' does not name a
non-static data member or base class
major(major), minor(minor){ }
^~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/sys/sysmacros.h:68:21: note: expanded from macro
'minor'
# define minor(dev) gnu_dev_minor (dev)
^~~~~~~~~~~~~~~~~~~
2 errors generated.
So it looks like the underlying issue is that various stream related headers
bring in stdlib.h which eventually casues sys/sysmacros.h to be be included.
The details were identified in one of the comments which said:
_GNU_SOURCE causes stdlib.h to include sys/types.h, and it causes sys/types.h
to include sys/sysmacros.h
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/19239] Including stdlib.h ends up with macros major and minor being defined
Date: Fri, 13 Nov 2015 10:54:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I think this is mainly a GCC bug with _GNU_SOURCE being defined by
default. See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11196>.
Avoiding this _GNU_SOURCE definition is hard, because much of the C++
standard library is in the headers and requires functionality outside the
ISO C library to implement it. As discussed in
<https://sourceware.org/ml/libc-alpha/2012-03/msg00311.html>, we'd be
happy to provide a way for libstdc++ to get exactly the interfaces it
needs beyond ISO C (at the API and ABI level). But I don't think we've
seen further details from the libstdc++ side of exactly what's required.
It may be we could also change the _GNU_SOURCE API so that fewer headers
result in sys/sysmacros.h being included, but that would need a concrete
proposal for an API change on libc-alpha; it's not inherently a bug, so
libc-alpha is the right place (followed by a patch there is the API change
proposal gets consensus).
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Subject: [Bug math/14551] [ldbl-128ibm] strtold overflow handling for IBM long double
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https://sourceware.org/bugzilla/show_bug.cgi?id=14551
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=909f8e14dbe4073d75a776b4a9f50e5cc450f161
commit 909f8e14dbe4073d75a776b4a9f50e5cc450f161
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Nov 13 12:03:46 2015 +0000
Fix ldbl-128ibm strtold overflow handling (bug 14551).
For ldbl-128ibm, if the result of strtold overflows in the final
conversion from MPN to IBM long double (because the exponent for a
106-bit IEEE result is 1023 but the high part would end up as
0x1p1024, which overflows), that conversion code fails to handle this
and produces an invalid long double value (high part infinite, low
part not zero) without raising exceptions or setting errno. This
patch adds an explicit check for this case to ensure an appropriate
result is returned in a way that ensures the right exceptions are
raised, with errno set.
Tested for powerpc.
[BZ #14551]
* sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c: Include <errno.h>.
(__mpn_construct_long_double): If high part overflows to infinity,
set errno and recompute overflowed result of the correct sign.
* sysdeps/ieee754/ldbl-128ibm/Makefile
[$(subdir) = stdlib] (tests): Add tst-strtold-ldbl-128ibm.
[$(subdir) = stdlib] ($(objpfx)tst-strtold-ldbl-128ibm): Depend on
$(libm).
* sysdeps/ieee754/ldbl-128ibm/tst-strtold-ldbl-128ibm.c: New file.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 12 +++
sysdeps/ieee754/ldbl-128ibm/Makefile | 5 +
sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c | 9 ++
.../ieee754/ldbl-128ibm/tst-strtold-ldbl-128ibm.c | 85 ++++++++++++++++++++
4 files changed, 111 insertions(+), 0 deletions(-)
create mode 100644 sysdeps/ieee754/ldbl-128ibm/tst-strtold-ldbl-128ibm.c
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To: glibc-bugs@sourceware.org
Subject: [Bug math/14551] [ldbl-128ibm] strtold overflow handling for IBM long double
Date: Fri, 13 Nov 2015 12:06:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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Subject: [Bug libc/19239] Including stdlib.h ends up with macros major and minor being defined
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Zack Weinberg <zackw at panix dot com> changed:
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----------------------------------------------------------------------------
CC| |zackw at panix dot com
--- Comment #2 from Zack Weinberg <zackw at panix dot com> ---
https://sourceware.org/ml/libc-alpha/2015-11/msg00253.html
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Subject: [Bug libc/19239] Including stdlib.h ends up with macros major and minor being defined
Date: Fri, 13 Nov 2015 15:34:00 -0000
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Rich Felker <bugdal at aerifal dot cx> changed:
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--- Comment #3 from Rich Felker <bugdal at aerifal dot cx> ---
While I agree that defining _GNU_SOURCE from the gcc side is _a_ bug, I think
this is also a glibc bug. Individually having stdlib.h include sys/types.h and
having sys/types.h include sys/sysmacros.h both make sense as legacy-compat
behaviors, but having stdlib.h expose the junk from sys/sysmacros.h is highly
undesirable to the point of being a bug.
Yes, there should be a concrete API proposal for removing implicit includes
like this, but I don't think the need for such a proposal negates classifying
this as a bug.
My preliminary proposal is that all implicit inclusion of sys/sysmacros.h
should be removed. Only a very small number of programs (things like ls, mknod,
etc.) have any use at all for these macros and they should be fixed to include
it explicitly if they're not already doing so.
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19242] New: strtol incorrect in Turkish locales
Date: Fri, 13 Nov 2015 16:47:00 -0000
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Bug ID: 19242
Summary: strtol incorrect in Turkish locales
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
CC: drepper.fsp at gmail dot com
Target Milestone: ---
The implementations of strtol and related functions use locale-specific
conversions to upper case before determining whether a character is a valid
letter in the argument. This means that in Turkish locales such as tr_TR.UTF-8
and tr_TR.ISO-8859-9, "i" is interpreted as not being a valid number, when if
the base passed to strtol is 19 or more it should be interpreted as the number
18.
ISO C explicitly says "The letters from a (or A) through z (or Z) are ascribed
the values 10 through 35", so clearly intends the standard ASCII letters
(otherwise you wouldn't generally have exactly 26 letters to ascribe such
values) (whereas white-space must be identified according to the locale).
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Subject: [Bug malloc/19243] New: reused_arena can pick an arena on the free list
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Bug ID: 19243
Summary: reused_arena can pick an arena on the free list
Product: glibc
Version: 2.23
Status: NEW
Severity: normal
Priority: P1
Component: malloc
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
Target Milestone: ---
Flags: security-
If reused_arena picks an arena on the free list (which means that arena_get2
did not see it yet, and there was a concurrent thread exit, updating the free
list), it will increase the thread reference count of the arena. At this
point, this invariant in get_free_list no longer holds:
821 /* Arenas on the free list are not attached to any thread.
*/
822 assert (result->attached_threads == 0);
Therefore, the assert is incorrect. I am not sure if we should simply remove
it and not change anything, or if we should change reused_arena to avoid this
race condition.
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Subject: [Bug malloc/19243] reused_arena can pick an arena on the free list
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
This was introduced by the fix for bug 19048.
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Subject: [Bug malloc/19243] reused_arena can pick an arena on the free list
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=19048
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug malloc/19048] malloc: arena free list can become cyclic, increasing contention
Date: Fri, 13 Nov 2015 20:43:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=19243
--- Comment #15 from Florian Weimer <fweimer at redhat dot com> ---
If you backport this, you also need to fix bug 19243.
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>From glibc-bugs-return-30491-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 15 12:28:34 2015
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From: "manuel at enkidu dot coop" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/19247] New: Update pap_CW glibc locale file
Date: Sun, 15 Nov 2015 12:28:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19247
Bug ID: 19247
Summary: Update pap_CW glibc locale file
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: manuel at enkidu dot coop
CC: libc-locales at sourceware dot org
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Created attachment 8781
--> https://sourceware.org/bugzilla/attachment.cgi?id=8781&action=edit
new updated locale file for pap_CW
Hi!
we are working on the pap_CW locale file and now it is needed to update it.
You can read more about our work here
http://opencuracao.com/2015/11/new-version-of-the-spellchecker/
We already tested the new locale version on our local installations of Ubuntu.
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>From glibc-bugs-return-30492-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 15 19:11:58 2015
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From: "vapier at gentoo dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/19247] pap_CW: update glibc locale file
Date: Sun, 15 Nov 2015 19:11:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vapier at gentoo dot org
Summary|Update pap_CW glibc locale |pap_CW: update glibc locale
|file |file
--- Comment #1 from Mike Frysinger <vapier at gentoo dot org> ---
could you describe the changes you actually made ?
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>From glibc-bugs-return-30493-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 15 22:47:23 2015
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From: "manuel at enkidu dot coop" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/19247] pap_CW: update glibc locale file
Date: Sun, 15 Nov 2015 22:47:00 -0000
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--- Comment #2 from Manuel Ortega <manuel at enkidu dot coop> ---
(In reply to Mike Frysinger from comment #1)
> could you describe the changes you actually made ?
Hi!
we added new contact details, completed list of months, months abbreviations,
data and time formats, decimal_point, thousands_sep, currency_symbol, yesexpr,
noexpr.
These changes are the result of a working group based in Curaçao. The group is
lead by Foundation Open Curaçao and group of linguistics specialised on
Papiamento pap_CW
You can read more about this here:
http://opencuracao.com/2015/11/new-version-of-the-spellchecker/
If you need more info, just ask me.
Thanks for you help!
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>From glibc-bugs-return-30494-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 16 07:29:19 2015
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Subject: [Bug malloc/19243] reused_arena can pick an arena on the free list, leading to an assertion failure
Date: Mon, 16 Nov 2015 07:29:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|reused_arena can pick an |reused_arena can pick an
|arena on the free list |arena on the free list,
| |leading to an assertion
| |failure
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>From glibc-bugs-return-30495-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 16 10:28:33 2015
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/15002] Avoid undefined behavior in posix_fallocate overflow check
Date: Mon, 16 Nov 2015 10:28:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
This was fixed by a combination of (the earlier patch tried to fix it but made
a mistake, so the actual fix was with the later patch):
commit 543ef578c3304661713950b37abd0c916f52ecf0
Author: Paul Eggert <eggert@cs.ucla.edu>
Date: Tue Aug 25 23:42:01 2015 -0700
Fix broken overflow check in posix_fallocate [BZ 18873]
* sysdeps/posix/posix_fallocate.c (posix_fallocate):
* sysdeps/posix/posix_fallocate64.c (__posix_fallocate64_l64):
Fix parenthesization typo.
commit 7fe9e2e089f4990b7d18d0798f591ab276b15f2b
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Jun 5 10:50:38 2015 +0200
posix_fallocate: Emulation fixes and documentation [BZ #15661]
Handle signed integer overflow correctly. Detect and reject O_APPEND.
Document drawbacks of emulation.
This does not completely address bug 15661, but improves the situation
somewhat.
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>From glibc-bugs-return-30496-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 16 10:45:01 2015
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Subject: [Bug localedata/15578] kk_KZ: various updates
Date: Mon, 16 Nov 2015 10:45:00 -0000
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--- Comment #10 from Timur Birsh <taem at linukz dot org> ---
Created attachment 8783
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Refresh patch against master with the additional fixes
Hello,
Please find attached refreshed patch against master with the additional fixes.
Regards.
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>From glibc-bugs-return-30497-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 16 13:21:34 2015
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug malloc/19182] malloc deadlock between ptmalloc_lock_all and _int_new_arena
Date: Mon, 16 Nov 2015 13:21:00 -0000
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
reused_arena has a similar problem after commit
a62719ba90e2fa1728890ae7dc8df9e32a622e7b.
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>From glibc-bugs-return-30498-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 16 20:18:36 2015
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Subject: [Bug malloc/19243] reused_arena can pick an arena on the free list, leading to an assertion failure
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Created attachment 8787
--> https://sourceware.org/bugzilla/attachment.cgi?id=8787&action=edit
bug19243.c
Preliminary test case.
The real one will have to scale the number of threads based on available
arenas. Based on my experiments, the outer thread count should be equal to the
maximum number of arenas, the inner thread count should be three, and the
timeout can be fairly low (running the test for 5 seconds should suffice).
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>From glibc-bugs-return-30499-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 16 23:14:40 2015
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From: "vadmium+floss at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug time/19253] New: tzset() ineffective when temporary TZ did not include DST rules
Date: Mon, 16 Nov 2015 23:14:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19253
Bug ID: 19253
Summary: tzset() ineffective when temporary TZ did not include
DST rules
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: time
Assignee: unassigned at sourceware dot org
Reporter: vadmium+floss at gmail dot com
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Created attachment 8788
--> https://sourceware.org/bugzilla/attachment.cgi?id=8788&action=edit
Demo program
Some parts of the test suite of the Python programming language temporarily
change the time zone by calling tzset() after setting the TZ environment
variable. Then they change TZ back to the original value, or unset it, as
appropriate, and call tzset() to restore the usual time zone. This strategy
fails to restore the original time zone, at least when both the following are
true:
* The normal time zone is set to America/New_York. On the other hand, having
UTC as the normal time zone does not trigger the problem.
* The temporary TZ value did not include DST rules. The best workaround seems
to be to always include DST rules with the TZ value.
See <https://bugs.python.org/issue20220> for more info. The failure was
originally seen on two System Z buildbots: GNU/Linux s390x System Z SLES 12,
and GNU/Linux s390x System Z RHEL 7.1. I have also reproduced this on my Arch
Linux x86-64 computer.
Here is a demonstration using the attached tz-quirk.c program. You have to give
it the temporary TZ value as argv[1].
$ gcc -Wall tz-quirk.c -o tz-quirk
$ sudo timedatectl set-timezone America/New_York
$ ./tz-quirk "STD-1DST" # Optional DST rules omitted
Initially: TZ=<unset> tzname={"GMT", "GMT"}
After tzset(): TZ=<unset> tzname={"EST", "EDT"}
Set TZ: TZ="STD-1DST" tzname={"STD", "DST"}
Unset TZ: TZ=<unset> tzname={"STD", "DST"} <== Not restored!
$ ./tz-quirk "STD-1DST,M3.2.0,M11.1.0" <== DST rules included
Initially: TZ=<unset> tzname={"GMT", "GMT"}
After tzset(): TZ=<unset> tzname={"EST", "EDT"}
Set TZ: TZ="STD-1DST,M3.2.0,M11.1.0" tzname={"STD", "DST"}
Unset TZ: TZ=<unset> tzname={"EST", "EDT"} <== Restored as expected
$ pacman -Qo /lib/libc.so.6 # Arch Linux
/usr/lib/libc.so.6 is owned by glibc 2.22-3
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>From glibc-bugs-return-30500-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 17 12:40:23 2015
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug malloc/19243] reused_arena can pick an arena on the free list, leading to an assertion failure and reference count corruption
Date: Tue, 17 Nov 2015 12:40:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|reused_arena can pick an |reused_arena can pick an
|arena on the free list, |arena on the free list,
|leading to an assertion |leading to an assertion
|failure |failure and reference count
| |corruption
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
It's not just an incorrect assert. If the bug triggers, the attached threads
counter will be incorrect.
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>From glibc-bugs-return-30501-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 18 02:30:29 2015
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From: "mschiffer+misc@universe-factory.net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/19257] New: Per-thread memory leak in __res_vinit with IPv6 nameservers
Date: Wed, 18 Nov 2015 02:30:00 -0000
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Bug ID: 19257
Summary: Per-thread memory leak in __res_vinit with IPv6
nameservers
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: mschiffer+misc@universe-factory.net
Target Milestone: ---
The sockaddr_in6 allocated in resolv/res_init.c:317 is not freed, leaking 28
bytes per thread using the resolver (according to valgrind).
This is a regression in glibc 2.22, probably caused by commit
2212c1420c92a33b0e0bd9a34938c9814a56c0f7 "Simplify handling of nameserver
configuration in resolver".
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>From glibc-bugs-return-30502-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 18 12:03:59 2015
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19261] New: test-string.h questionable pointer arithmetic
Date: Wed, 18 Nov 2015 12:03:00 -0000
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Bug ID: 19261
Summary: test-string.h questionable pointer arithmetic
Product: glibc
Version: 2.23
Status: NEW
Severity: minor
Priority: P3
Component: string
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
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Flags: security-
test-string.h contains this:
typedef struct
{
const char *name;
void (*fn) (void);
long test;
} impl_t;
extern impl_t __start_impls[], __stop_impls[];
…
for (impl = __start_impls; impl < __stop_impls; ++impl) \
I don't think C gives a well-defined result for that because __start_impls and
__stop_impls are separate objects.
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>From glibc-bugs-return-30503-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 18 12:30:57 2015
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Subject: [Bug string/19261] test-string.h questionable pointer arithmetic
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Jakub Jelinek <jakub at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at redhat dot com
--- Comment #1 from Jakub Jelinek <jakub at redhat dot com> ---
Bet you should just
extern impl_t *stop;
__asm ("" : "=g" (stop) : "0" (__stop_impls));
and use stop instead of __stop_impls or something similar to hide it from the
optimizers.
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>From glibc-bugs-return-30504-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 18 12:38:02 2015
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Subject: [Bug string/19261] test-string.h questionable pointer arithmetic
Date: Wed, 18 Nov 2015 12:38:00 -0000
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Jakub Jelinek from comment #1)
> Bet you should just
> extern impl_t *stop;
> __asm ("" : "=g" (stop) : "0" (__stop_impls));
> and use stop instead of __stop_impls or something similar to hide it from
> the optimizers.
I was planning to compute the difference in uintptr_t.
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>From glibc-bugs-return-30505-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 18 14:33:31 2015
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Subject: [Bug libc/19108] Stop using /etc/mtab (_PATH_MOUNTED) in Linux
Date: Wed, 18 Nov 2015 14:33:00 -0000
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Jason A. Donenfeld <jason at zx2c4 dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at zx2c4 dot com
--- Comment #1 from Jason A. Donenfeld <jason at zx2c4 dot com> ---
Submitted a patch for this:
https://sourceware.org/ml/libc-alpha/2015-11/msg00418.html
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>From glibc-bugs-return-30506-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 18 16:01:31 2015
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Marko Myllynen <myllynen at redhat dot com> changed:
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--- Comment #11 from Marko Myllynen <myllynen at redhat dot com> ---
I quickly checked the updated patch but I didn't see my previous comments
addressed in it or explained here. From the previous email:
> - I don't know the rationale for LC_IDENTIFICATION/category changes
This is still unclear, why change this?
> - I'd rather leave titles in LC_NAME undefined than use empty strings
This was still the case, not critical though.
> - I'd shorten the LC_MEASUREMENT comment, it should be obvious
Not that important but I'd change it while at it.
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Subject: [Bug localedata/15578] kk_KZ: various updates
Date: Wed, 18 Nov 2015 17:04:00 -0000
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--- Comment #12 from Timur Birsh <taem at linukz dot org> ---
(In reply to Marko Myllynen from comment #11)
Hi Marko,
Thanks for your reply.
> I quickly checked the updated patch but I didn't see my previous comments
> addressed in it or explained here. From the previous email:
>
> > - I don't know the rationale for LC_IDENTIFICATION/category changes
>
> This is still unclear, why change this?
This change based on the uk_UA locale. I am not sure, is 'kk_KZ:2000' correct?
> > - I'd rather leave titles in LC_NAME undefined than use empty strings
>
> This was still the case, not critical though.
I can remove empty fields.
> > - I'd shorten the LC_MEASUREMENT comment, it should be obvious
>
> Not that important but I'd change it while at it.
Ok.
Regards,
Timur
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Subject: [Bug localedata/15578] kk_KZ: various updates
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--- Comment #13 from Marko Myllynen <myllynen at redhat dot com> ---
(In reply to Timur Birsh from comment #12)
>
> > I quickly checked the updated patch but I didn't see my previous comments
> > addressed in it or explained here. From the previous email:
> >
> > > - I don't know the rationale for LC_IDENTIFICATION/category changes
> >
> > This is still unclear, why change this?
>
> This change based on the uk_UA locale.
I investigated this a bit more. The LC_IDENTIFICATION/category is defined in
ISO 14652, see http://www.open-std.org/jtc1/SC22/WG20/docs/n972-14652ft.pdf,
which defines two values (i18n/posix) but the current convention in glibc seems
to be to have them like in en_US, de_DE, and the current kk_KZ so I don't think
the change is needed. Given that this information is probably not used by any
program it shouldn't matter much but might be better to follow the example set
by some of the most widely scrutinized locales.
Thanks.
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Subject: [Bug localedata/15578] kk_KZ: various updates
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--- Comment #14 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Marko Myllynen from comment #13)
> (In reply to Timur Birsh from comment #12)
> >
> > > I quickly checked the updated patch but I didn't see my previous comments
> > > addressed in it or explained here. From the previous email:
> > >
> > > > - I don't know the rationale for LC_IDENTIFICATION/category changes
> > >
> > > This is still unclear, why change this?
> >
> > This change based on the uk_UA locale.
>
> I investigated this a bit more. The LC_IDENTIFICATION/category is defined in
> ISO 14652, see http://www.open-std.org/jtc1/SC22/WG20/docs/n972-14652ft.pdf,
> which defines two values (i18n/posix) but the current convention in glibc
> seems to be to have them like in en_US, de_DE, and the current kk_KZ so I
> don't think the change is needed. Given that this information is probably
> not used by any program it shouldn't matter much but might be better to
> follow the example set by some of the most widely scrutinized locales.
We should be following international standards where applicable and those who
are working at the ISO level and taking our cues from them where it makes sense
and at the same time considering backwards compatibility with our current
users. Is there a compatibility impact for these changes?
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Subject: [Bug localedata/15578] kk_KZ: various updates
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--- Comment #15 from Marko Myllynen <myllynen at redhat dot com> ---
(In reply to Carlos O'Donell from comment #14)
> (In reply to Marko Myllynen from comment #13)
> >
> > I investigated this a bit more. The LC_IDENTIFICATION/category is defined in
> > ISO 14652, see http://www.open-std.org/jtc1/SC22/WG20/docs/n972-14652ft.pdf,
> > which defines two values (i18n/posix) but the current convention in glibc
> > seems to be to have them like in en_US, de_DE, and the current kk_KZ so I
> > don't think the change is needed. Given that this information is probably
> > not used by any program it shouldn't matter much but might be better to
> > follow the example set by some of the most widely scrutinized locales.
>
> We should be following international standards where applicable and those
> who are working at the ISO level and taking our cues from them where it
> makes sense and at the same time considering backwards compatibility with
> our current users. Is there a compatibility impact for these changes?
AFAICS ISO 14652 is a Technical Report not an International Standard. Not sure
why Ulrich and others used the current approach for the locales they created,
could be even that my quick reading of the report was not correct. It'd be
surprising to have compatibility impact with such an obscure value. I've stated
earlier that I'd rather have things around glibc locales slightly imperfect but
consistent all across rather than inconsistent and few locales differentiating
for no obvious gain but here we don't even have the consistency to begin with
so doesn't really matter in the end, I'm ok either way now that we know the
answer for my initial question about the background for this change. Thanks.
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
This is a regression introduced by bug 17195.
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--- Comment #9 from Florian Weimer <fweimer at redhat dot com> ---
Commit c26efef9798914e208329c0e8c3c73bb1135d9e3 introduced a regression, see
bug 18502.
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Subject: [Bug libc/19242] strtol incorrect in Turkish locales
Date: Wed, 18 Nov 2015 19:59:00 -0000
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From: "keld at keldix dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/15578] kk_KZ: various updates
Date: Wed, 18 Nov 2015 20:33:00 -0000
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--- Comment #16 from keld at keldix dot com <keld at keldix dot com> ---
On Wed, Nov 18, 2015 at 06:16:46PM +0000, myllynen at redhat dot com wrote:
> https://sourceware.org/bugzilla/show_bug.cgi?id=15578
>
> --- Comment #15 from Marko Myllynen <myllynen at redhat dot com> ---
> (In reply to Carlos O'Donell from comment #14)
> > (In reply to Marko Myllynen from comment #13)
> > >
> > > I investigated this a bit more. The LC_IDENTIFICATION/category is defined in
> > > ISO 14652, see http://www.open-std.org/jtc1/SC22/WG20/docs/n972-14652ft.pdf,
> > > which defines two values (i18n/posix) but the current convention in glibc
> > > seems to be to have them like in en_US, de_DE, and the current kk_KZ so I
> > > don't think the change is needed. Given that this information is probably
> > > not used by any program it shouldn't matter much but might be better to
> > > follow the example set by some of the most widely scrutinized locales.
> >
> > We should be following international standards where applicable and those
> > who are working at the ISO level and taking our cues from them where it
> > makes sense and at the same time considering backwards compatibility with
> > our current users. Is there a compatibility impact for these changes?
>
> AFAICS ISO 14652 is a Technical Report not an International Standard. Not sure
> why Ulrich and others used the current approach for the locales they created,
> could be even that my quick reading of the report was not correct. It'd be
> surprising to have compatibility impact with such an obscure value. I've stated
> earlier that I'd rather have things around glibc locales slightly imperfect but
> consistent all across rather than inconsistent and few locales differentiating
> for no obvious gain but here we don't even have the consistency to begin with
> so doesn't really matter in the end, I'm ok either way now that we know the
> answer for my initial question about the background for this change. Thanks.
The idea behind LC_IDENTIFICATION was that we could have different versions
of locales, and then conforming to different specs, as locale technology
evolves.
glibc does not implement all of ISO TR 14652/30112 - and in some case glibc
is different from the ISO specs. The LC_IDENTIFICATION version could then
indicate
which specs were used.
eg the glibc ftrst_weekday does not conform to 14652, where 1 denotes a monday
and is according
to ISO 8601, while glib uses 2 for Monday, AFAIK. A newer version could
indicate that
the locale follows 14652, or another version could indicate that it follows
30112.
Best regards
keld
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19266] New: strtod ("NAN(I)") incorrect in Turkish locales
Date: Thu, 19 Nov 2015 00:05:00 -0000
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Bug ID: 19266
Summary: strtod ("NAN(I)") incorrect in Turkish locales
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
The implementations of strtod and related functions use locale-specific
conversions to lower case when parsing the contents of a string
NAN(n-char-sequence_opt). This has the consequence that NAN(I) is not treated
as being of that form (only the initial NAN part is accepted). The syntax of
n-char-sequence directly maps to the ASCII letters, digits and underscore as in
identifiers, so it is unambiguous that all ASCII letters must be accepted in
all locales.
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>From glibc-bugs-return-30517-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 19 01:42:21 2015
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From: "digitalfreak at lingonborough dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
Date: Thu, 19 Nov 2015 01:42:00 -0000
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--- Comment #9 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 8795
--> https://sourceware.org/bugzilla/attachment.cgi?id=8795&action=edit
Proposed solution: alternative month names + smart algorithm
Good news: here is a working patch so please check, test, review, comment. It
implements the solution with "%B" format specifier smartly expanding into a
nominative or genitive (alternative) case depending on the current context. It
hopefully does not break any existing solution and is fully backward
compatible.
I have also provided the new locales for Polish, Russian and Ukrainian. I have
checked this with CLDR data but feel free to drop the changes to these files if
you think that other people should provide them. Please note that without the
changed locales you would not see the effect of the code change. For Russian I
have also changed the nominative month names to lowercase because some people
requested it here. For Ukrainian I have removed the "alternative digits" hack
and used the already provided genitive month names as the alternative names.
There are also some bad news:
1. The coreutils package (date, du) provides its own function fprintftime()
which tries to bypass strftime() as much as possible and if it calls strftime()
it retrieves only the month name so this patch will be unable to detect the
"full date" context and provide the correct genitive form. This means that
/usr/bin/date is not a good tool to test this patch. Perhaps it needs a patch
similar to this one.
2. I had to introduce the new locale field day_month_order which will be
available as nl_langinfo(_NL_DAY_MONTH_ORDER) and will determine if:
- only a day number before a month name forces the genitive month name (1),
- only a day number after a month name forces the genitive month name (3),
- both above orders force the genitive month name or this does not matter
because the current language does not provide the alternative month names (2,
default value when not specified).
Unfortunately, there is no universal rule for all languages. As stated in
comment 5, Russian requires a genitive case if a day number is before the month
name but a nominative case when reversed, both orders are correct. Other
languages require the day number to be before the month name and do not allow
to reverse them but we should not crash on grammatical errors, instead we
should provide the closest result to the requirement. On the other hand,
Lithuanian requires the month name to be before the day number and in the
genitive case.
3. There are more languages which suffer from this bug. It is possible to
retrieve the correct alternative month names from CLDR but I am not sure if
this task should be a part of this bugfix or should be left to the native
translators. I can provide more of them but providing all sounds like a
horrible task.
4. I am not sure if you like the idea of "%B" to be smartly converted to the
correct form of the month name. I will appreciate your feedback.
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From: "lixin.fnst at cn dot fujitsu.com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/19267] New: LSB test cases about locale are Failed on GLibc(2.22)
Date: Thu, 19 Nov 2015 07:59:00 -0000
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Bug ID: 19267
Summary: LSB test cases about locale are Failed on GLibc(2.22)
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: locale
Assignee: unassigned at sourceware dot org
Reporter: lixin.fnst at cn dot fujitsu.com
Target Milestone: ---
Those cases are are Failed on GLibc(2.22),and they are PASS on GLibc(2.21) or
less.
/tset/ANSI.os/locale/setlocale/T.setlocale 1 2 4 5 15
/tset/ANSI.os/string/strcoll_X/T.strcoll_X 1
/tset/POSIX.os/procenv/sysconf_X/T.sysconf_X 12 14
/tset/LI18NUX2K.L1/base/wcscoll/T.wcscoll 1
/tset/LI18NUX2K.L1/utils/localedef/T.localedef 7
/tset/LI18NUX2K.L1/utils/sort/T.sort 1 3 17 19 33 35
/tset/LI18NUX2K.L1/utils/comm/T.comm 1 2
/tset/LI18NUX2K.L1/utils/ls-fh/T.ls-fh 2
The test code is as following:
----------------------------------
43 private char *test_locale = "LTP_1.UTF-8";
......
50 private wchar_t wcs2[] = L"Ch";
51 private wchar_t les2[] = L"Cz";
......
86 if (setlocale (LC_ALL, test_locale) == NULL)
87 {
88 xx_rpt (FAILURE);
89 in_rpt ("Cannot use test locale.");
90 DBUG_VOID_RETURN;
91 }
......
104 /* for collating elements `Ch' */
105 rval = wcscoll (les2, wcs2);
106 if (rval < 0)
107 PATH_TRACE;
108 else
109 {
110 xx_rpt (FAILURE);
111 in_rpt ("When the strings have a collating symbol, "
112 "the return value is not correct.");
113 }
......
----------------------------------
The expect return value of rval is <0,but the actual return value is >0.
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>From glibc-bugs-return-30519-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 19 08:51:11 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug locale/19267] LSB test cases about locale are Failed on GLibc(2.22)
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Andreas Schwab <schwab@linux-m68k.org> changed:
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Please test with commit 6c84109.
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Subject: [Bug localedata/15578] kk_KZ: various updates
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--- Comment #17 from Marko Myllynen <myllynen at redhat dot com> ---
(In reply to keld@keldix.com from comment #16)
>
> The idea behind LC_IDENTIFICATION was that we could have different versions
> of locales, and then conforming to different specs, as locale technology
> evolves.
> glibc does not implement all of ISO TR 14652/30112 - and in some case glibc
> is different from the ISO specs. The LC_IDENTIFICATION version could then
> indicate
> which specs were used.
>
>
> eg the glibc ftrst_weekday does not conform to 14652, where 1 denotes a
> monday and is according
> to ISO 8601, while glib uses 2 for Monday, AFAIK. A newer version could
> indicate that
> the locale follows 14652, or another version could indicate that it follows
> 30112.
Thanks for the background information. Sounds like en_US, de_DE, kk_KZ etc are
ok then and it's best to drop the LC_IDENTIFICATION/category change here.
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>From glibc-bugs-return-30521-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 19 14:55:16 2015
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Subject: [Bug localedata/15578] kk_KZ: various updates
Date: Thu, 19 Nov 2015 14:55:00 -0000
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--- Comment #18 from Timur Birsh <taem at linukz dot org> ---
Created attachment 8797
--> https://sourceware.org/bugzilla/attachment.cgi?id=8797&action=edit
Updated patch
Marko, please find attached an updated patch.
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>From glibc-bugs-return-30522-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 19 15:09:09 2015
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From: "myllynen at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/15578] kk_KZ: various updates
Date: Thu, 19 Nov 2015 15:09:00 -0000
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--- Comment #19 from Marko Myllynen <myllynen at redhat dot com> ---
(In reply to Timur Birsh from comment #18)
> Created attachment 8797 [details]
> Updated patch
>
> Marko, please find attached an updated patch.
Thanks for addressing the comments, looks good to me now.
Please send it to libc-alpha (as per
https://sourceware.org/glibc/wiki/Contribution%20checklist) for wider review
and if all ok then one of the maintainers can hopefully commit it.
Thanks.
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>From glibc-bugs-return-30523-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 19 19:45:16 2015
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From: "markus at trippelsdorf dot de" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/19269] New: tst-audit4 and tst-audit10 failures with gcc-6 on non avx machine
Date: Thu, 19 Nov 2015 19:45:00 -0000
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Bug ID: 19269
Summary: tst-audit4 and tst-audit10 failures with gcc-6 on non
avx machine
Product: glibc
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tst-audit4 and tst-audit10 fail (with illegal instruction) on my
non avx machine when build with gcc-6 and -O3. The reason is that
gcc-6 emits avx instructions for test-skeleton.c:
markus@x4 elf % gcc -w -S -c -O3 -mavx test-skeleton.i -o - | grep vmovaps
vmovaps %xmm0, 16(%rsp)
vmovaps %xmm0, (%rsp)
-O2 and older gcc versions are fine:
markus@x4 elf % gcc -w -S -c -O2 -mavx test-skeleton.i -o - | grep vmovaps
markus@x4 elf % /usr/x86_64-pc-linux-gnu/gcc-bin/4.9.3/gcc -w -S -c -O3 -mavx
test-skeleton.i -o - | grep vmovaps
markus@x4 elf % /usr/x86_64-pc-linux-gnu/gcc-bin/5.2.1/gcc -w -S -c -O3 -mavx
test-skeleton.i -o - | grep vmovaps
markus@x4 elf %
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>From glibc-bugs-return-30524-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 19 21:05:33 2015
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Subject: [Bug build/19269] tst-audit4 and tst-audit10 failures with gcc-6 on non avx machine
Date: Thu, 19 Nov 2015 21:05:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
For various reasons, I think it would be best for most of the
test-skeleton.c logic to be built once into a .o file rather than built in
every test, with the skeleton included by individual tests just filling
out data rather than code as far as possible. This bug illustrates one
use of not building lots of code with per-test options; the inability to
use test-skeleton.c with e.g. -ansi -U_LIBC is another.
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>From glibc-bugs-return-30525-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 19 23:42:09 2015
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Subject: [Bug time/17189] Incorrect result for %s in strftime
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Nicholas Miell <nmiell at gmail dot com> changed:
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CC| |nmiell at gmail dot com
Resolution|--- |INVALID
--- Comment #1 from Nicholas Miell <nmiell at gmail dot com> ---
This is the documented behavior in the manual:
Calling 'strftime' also sets the current time zone as if 'tzset'
were called; 'strftime' uses this information instead of
BROKENTIME's 'tm_gmtoff' and 'tm_zone' members.
The %s format isn't specified by POSIX and appears to originate in the strftime
implementation accompanying the tzdata database. The glibc behavior is
compatible -- the original implementation converts the supplied struct tm back
to a time_t using mktime(), and mktime() is defined by POSIX to use the
timezone as set by tzset(). (POSIX's definition of struct tm doesn't even have
the tm_zone or tm_gmtoff members.)
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>From glibc-bugs-return-30526-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 00:13:12 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug time/17189] Incorrect result for %s in strftime
Date: Fri, 20 Nov 2015 00:13:00 -0000
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--- Comment #2 from daurnimator <quae at daurnimator dot com> ---
> This is the documented behavior in the manual:
> Calling 'strftime' also sets the current time zone as if 'tzset'
> were called; 'strftime' uses this information instead of
> BROKENTIME's 'tm_gmtoff' and 'tm_zone' members.
The %s specifier is defined as printing the **UTC timestamp**. From the man
page:
%s The number of seconds since the Epoch, 1970-01-01 00:00:00 +0000
(UTC). (TZ)
In reality, it prints the UTC timestamp, but adjusted for the local time
offset.
This is wrong (and not as documented)
At the very least this means we have a documentation bug.
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>From glibc-bugs-return-30527-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 00:50:54 2015
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From: "danglin at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19270] New: Shared libm missing __isnanl
Date: Fri, 20 Nov 2015 00:50:00 -0000
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Bug ID: 19270
Summary: Shared libm missing __isnanl
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: danglin at gcc dot gnu.org
CC: deller at gmx dot de
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Host: hppa-unknown-linux-gnu
Target: hppa-unknown-linux-gnu
Build: hppa-unknown-linux-gnu
This issue causes a build failure for various debian packages including gmt:
/usr/bin/cc -std=gnu99 -fstrict-aliasing -g -O2 -Wformat
-Werror=format-security -D_FORTIFY_SOURCE=2 -fopenmp -O2 -g -DNDEBUG -fopenmp
CMakeFiles/gmt.dir/gmt.c.o -o gmt -rdynamic libgmt.so.5.2.1 -lnetcdf
/usr/lib/hppa-linux-gnu/hdf5/ser
ial/libhdf5_hl.so /usr/lib/hppa-linux-gnu/hdf5/serial/libhdf5.so -lpthread -ldl
-lm -lcurl -lgdal -lpcre -lfftw3f -lfftw3f_threads -llapack -lblas
libpostscript
light.so.5.2.1 -lz -lm -ldl
-Wl,-rpath,/home/dave/debian/gmt/gmt-5.2.1+dfsg/debi
an/build/src:/usr/lib/hppa-linux-gnu/hdf5/serial:
libgmt.so.5.2.1: undefined reference to `__isnanl'
We have in math.h:
* Return nonzero value if X is a NaN. We could use `fpclassify' but
we already have this functions `__isnan' and it is faster. */
# ifdef __NO_LONG_DOUBLE_MATH
# define isnan(x) \
(sizeof (x) == sizeof (float) ? __isnanf (x) : __isnan (x))
# else
# define isnan(x) \
(sizeof (x) == sizeof (float) \
? __isnanf (x) \
: sizeof (x) == sizeof (double) \
? __isnan (x) : __isnanl (x))
# endif
We have in mathdef.h:
/* On hppa `long double' is 64-bits. */
#undef __NO_LONG_DOUBLE_MATH
We have from s_isnan.c:
#undef __isnan
int
__isnan (double x)
{
int32_t hx, lx;
EXTRACT_WORDS (hx, lx, x);
hx &= 0x7fffffff;
hx |= (u_int32_t) (lx | (-lx)) >> 31;
hx = 0x7ff00000 - hx;
return (int) (((u_int32_t) hx) >> 31);
}
hidden_def (__isnan)
weak_alias (__isnan, isnan)
#ifdef NO_LONG_DOUBLE
strong_alias (__isnan, __isnanl)
weak_alias (__isnan, isnanl)
#endif
We have from math/Makefile:
ifneq ($(long-double-fcts),yes)
# The `double' and `long double' types are the same on this machine.
# We won't compile the `long double' code at all. Tell the `double' code
# to define aliases for the `FUNCl' names. To avoid type conflicts in
# defining those aliases, tell <math.h> to declare the `FUNCl' names with
# `double' instead of `long double'.
math-CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
endif
Since double and long double are both 64-bits, the above is selected and
s_isnanf.c is built with NO_LONG_DOUBLE defined. This yields the following
aliases with gcc-5:
extern __typeof (__isnan) __EI___isnan __asm__("" "__isnan"); extern __typeof
(__isnan) __EI___isnan __attribute__((alias ("" "__GI___isnan")));
extern __typeof (__isnan) isnan __attribute__ ((weak, alias ("__isnan")));
extern __typeof (__isnan) __isnanl __attribute__ ((alias ("__isnan")));
extern __typeof (__isnan) isnanl __attribute__ ((weak, alias ("__isnan")));
This results in following assembly code:
.cfi_startproc
__GI___isnan:
.PROC
.CALLINFO FRAME=0,NO_CALLS
.ENTRY
.LVL0:
.LBB2:
.loc 1 30 0
fstds %fr5,-16(%sp)
ldws -16(%sp),%r28
ldws -12(%sp),%r29
.LVL1:
.LBE2:
.loc 1 31 0
extru %r28,31,31,%r20
.loc 1 32 0
sub %r0,%r29,%r21
or %r21,%r29,%r28
.LVL2:
extru %r28,0,1,%r28
or %r28,%r20,%r28
.LVL3:
.loc 1 33 0
ldil L'2146435072,%r20
sub %r20,%r28,%r28
.LVL4:
.loc 1 35 0
bv %r0(%r2)
extru %r28,0,1,%r28
.EXIT
.PROCEND
.cfi_endproc
.LFE16:
.size __GI___isnan, .-__GI___isnan
.globl __isnan
.set __isnan,__GI___isnan
.weak isnan
.set isnan,__isnan
.globl __GI___isnanl
.hidden __GI___isnanl
.set __GI___isnanl,__isnan
.weak isnanl
.set isnanl,__isnan
As can be seen, we end up with hidden symbol __GI___isnanl aliased to __isnan
and the is no __isnanl symbol.
Probably, __NO_LONG_DOUBLE_MATH was not defined at a time when NO_LONG_DOUBLE
didn't exist and the long double routines were all compiled. Now it probably
should be defined.
Bug is known to exist in 2.19 and later.
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Subject: [Bug libc/19170] __gmon_start__ defined in hppa in crtn.S
Date: Fri, 20 Nov 2015 00:59:00 -0000
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John David Anglin <danglin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |carlos at redhat dot com
--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> ---
Patch here:
https://sourceware.org/ml/libc-alpha/2015-11/msg00279.html
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Subject: [Bug math/19270] Shared libm missing __isnanl
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----------------------------------------------------------------------------
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>From glibc-bugs-return-30530-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 01:14:26 2015
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Subject: [Bug time/17189] Incorrect result for %s in strftime
Date: Fri, 20 Nov 2015 01:14:00 -0000
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--- Comment #3 from Nicholas Miell <nmiell at gmail dot com> ---
Again, from the manual:
Calling 'strftime' also sets the current time zone as if 'tzset'
were called; 'strftime' uses this information instead of
BROKENTIME's 'tm_gmtoff' and 'tm_zone' members.
This means that strftime() always treats the supplied struct tm as if it were
in the local time zone; this includes the conversion to UTC.
If you supply a struct tm to strftime() that isn't in the local time zone,
naturally the conversion from the local time zone to UTC will be wrong.
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>From glibc-bugs-return-30531-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 01:14:32 2015
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19270] Shared libm missing __isnanl
Date: Fri, 20 Nov 2015 01:14:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Cf. my remarks at
<https://sourceware.org/ml/libc-ports/2013-05/msg00070.html> about
apparent inconsistency in this area (and my subsequent remarks at
<https://sourceware.org/ml/libc-ports/2013-06/msg00004.html> about how the
makefile value of long-double-fcts was once "no " with a trailing space,
not plain "no").
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>From glibc-bugs-return-30532-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 01:38:32 2015
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From: "dave.anglin at bell dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19270] Shared libm missing __isnanl
Date: Fri, 20 Nov 2015 01:38:00 -0000
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--- Comment #2 from dave.anglin at bell dot net ---
On 2015-11-19, at 8:14 PM, joseph at codesourcery dot com wrote:
> Cf. my remarks at
> <https://sourceware.org/ml/libc-ports/2013-05/msg00070.html> about
> apparent inconsistency in this area (and my subsequent remarks at
> <https://sourceware.org/ml/libc-ports/2013-06/msg00004.html> about how the
> makefile value of long-double-fcts was once "no " with a trailing space,
> not plain "no").
Thanks, I'll change the __NO_LONG_DOUBLE_MATH define so the headers are
consistent with
the library and test on debian. That seemed to be the optimal solution.
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From: "bugdal at aerifal dot cx" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/16814] RFE: Reconsider adding bcrypt (or scrypt) support
Date: Fri, 20 Nov 2015 03:06:00 -0000
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Rich Felker <bugdal at aerifal dot cx> changed:
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--- Comment #1 from Rich Felker <bugdal at aerifal dot cx> ---
I'd like to propose we break this up into two parts:
1. bcrypt: this is trivial to add internally in glibc and should just be added.
2. scrypt, Argon2 (PHC winner), and anything else "heavy": it's unreasonable to
expect to be able to allocate many MB (or even GB) in the calling application's
address space to hash a password. It would also be desirable to be able to
support new hashes without waiting for glibc to add support for them. So what I
propose is that, for setting strings glibc doesn't recognize internally, it
should connect via a unix socket to a password hashing daemon which will do the
actual work and pass back the result. If there's interest in this idea I would
be happy to help with the design for the protocol support on the glibc side.
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Subject: [Bug build/19269] tst-audit4 and tst-audit10 failures with gcc-6 on non avx machine
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Subject: [Bug locale/19267] LSB test cases about locale are Failed on GLibc(2.22)
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>From glibc-bugs-return-30536-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 09:17:34 2015
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/19257] Per-thread memory leak in __res_vinit with IPv6 nameservers
Date: Fri, 20 Nov 2015 09:17:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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>From glibc-bugs-return-30537-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 10:20:15 2015
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From: "baurthefirst at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/15578] kk_KZ: various updates
Date: Fri, 20 Nov 2015 10:20:00 -0000
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--- Comment #20 from Baurzhan Muftakhidinov <baurthefirst at gmail dot com> ---
(In reply to Marko Myllynen from comment #19)
> (In reply to Timur Birsh from comment #18)
> > Created attachment 8797 [details]
> > Updated patch
> >
> > Marko, please find attached an updated patch.
>
> Thanks for addressing the comments, looks good to me now.
>
> Please send it to libc-alpha (as per
> https://sourceware.org/glibc/wiki/Contribution%20checklist) for wider review
> and if all ok then one of the maintainers can hopefully commit it.
>
> Thanks.
Unfortunately none of my free email addresses work for libc-alpha, it rejects
every mail I send.
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>From glibc-bugs-return-30538-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 14:13:53 2015
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/16364] sleep may leave SIGCHLD blocked on sync cancellation on GNU/Linux
Date: Fri, 20 Nov 2015 14:13:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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from 31cf39421bae23ffc7b6c6a229e14f8faa41608f (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8c873bf0190740ac1102e13ff7aeb6c08048abfd
commit 8c873bf0190740ac1102e13ff7aeb6c08048abfd
Author: Adhemerval Zanella <adhemerval.zanella@linaro.com>
Date: Sun Nov 8 20:06:42 2015 -0200
Remove signal handling for nanosleep (bug 16364)
Linux 2.6.32 and forward do not show the issue regarding SysV SIGCHLD
vs. SIG_IGN for nanosleep which make it feasible to use it for sleep
implementation without requiring any hacking to handle the spurious
wake up. The issue is likely being fixed before 2.6 and git
history [1] [2].
This patch simplifies the sleep code to call nanosleep directly by
using the posix default version. It also removes the early cancellation
tests for zero argument, since nanosleep will handle cancellation
in this case.
[1] https://lkml.org/lkml/2004/11/25/5
[2] https://lkml.org/lkml/2003/11/8/50
Checked on x86_64, ppc64le, and aarch64.
[BZ #16364]
* sysdeps/unix/sysv/linux/sleep.c: Remove file
* sysdeps/posix/sleep.c (__sleep): Simplify cancellation handling.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++
sysdeps/posix/sleep.c | 9 ---
sysdeps/unix/sysv/linux/sleep.c | 149 ---------------------------------------
3 files changed, 6 insertions(+), 158 deletions(-)
delete mode 100644 sysdeps/unix/sysv/linux/sleep.c
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Subject: [Bug libc/16364] sleep may leave SIGCHLD blocked on sync cancellation on GNU/Linux
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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| |rg
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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| |rg
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Subject: [Bug libc/16364] sleep may leave SIGCHLD blocked on sync cancellation on GNU/Linux
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed by 8c873bf0190740ac1102e13ff7aeb6c08048abfd.
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>From glibc-bugs-return-30542-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 17:18:20 2015
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From: "piotrdrag at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
Date: Fri, 20 Nov 2015 17:18:00 -0000
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--- Comment #10 from Piotr Drąg <piotrdrag at gmail dot com> ---
I think you need to send the patch to libc-alpha:
https://sourceware.org/glibc/wiki/Contribution%20checklist
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Subject: [Bug libc/154] tzset not called frequently enough by localtime() and friends
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Elion <netjoker4.5 at gmail dot com> changed:
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--- Comment #8 from Elion <netjoker4.5 at gmail dot com> ---
http://www.requea.com/xwiki/bin/download/XWiki/AmandatZohan/1cz1.html
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Subject: [Bug dynamic-link/2328] _dl_debug_state() RT_CONSISTENT called too early
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Subject: [Bug math/15421] lgamma wrongly sets signgam for ISO C
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d709042a6e5ab3c360280faad6f9538a34dc8eea
commit d709042a6e5ab3c360280faad6f9538a34dc8eea
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Nov 20 22:49:59 2015 +0000
Fix lgamma setting signgam for ISO C (bug 15421).
The lgamma (and likewise lgammaf, lgammal) function wrongly sets the
signgam variable even when building for strict ISO C conformance
(-std=c99 / -std=c11), although the user may define such a variable
and it's only in the implementation namespace for POSIX with XSI
extensions enabled.
Following discussions starting at
<https://sourceware.org/ml/libc-alpha/2013-04/msg00767.html> and
<https://sourceware.org/ml/libc-alpha/2015-10/msg00844.html>, it seems
that the safest approach for fixing this particular issue is for
signgam to become a weak alias for a newly exported symbol __signgam,
with the library functions only setting __signgam, at which point
static linker magic will preserve the alias for newly linked binaries
that refer to the library's signgam rather than defining their own,
while breaking the alias for programs that define their own signgam,
with new symbol versions for lgamma functions and with compat symbols
for existing binaries that set both signgam and __signgam.
This patch implements that approach for the fix. signgam is made into
a weak alias. The four symbols __signgam, lgamma, lgammaf, lgammal
get new symbol versions at version GLIBC_2.23, with the existing
versions of lgamma, lgammaf and lgammal becoming compat symbols.
When the compat versions are built, gamma, gammaf and gammal are
aliases for the compat versions (i.e. always set signgam); this is OK
as they are not ISO C functions, and avoids adding new symbol versions
for them unnecessarily. When the compat versions are not built
(i.e. for static linking and for future glibc ports), gamma, gammaf
and gammal are aliases for the new versions that set __signgam. The
ldbl-opt versions are updated accordingly.
The lgamma wrappers are adjusted so that the same source files,
included from different files with different definitions of
USE_AS_COMPAT, can build either the new versions or the compat
versions. Similar changes are made to the ia64 versions (untested).
Tests are added that the lgamma functions do not interfere with a user
variable called signgam for ISO C, with various choices for the size
of that variable, whether it is initialized, and for static and
dynamic linking. The conformtest whitelist entry is removed as well.
Tested for x86_64, x86, mips64 and powerpc, including looking at
objdump --dynamic-syms output to make sure the expected sets of
symbols were aliases. Also spot-tested that a binary built with old
glibc works properly (i.e. gets signgam set) when run with new glibc.
[BZ #15421]
* sysdeps/ieee754/s_signgam.c (signgam): Rename to __signgam,
initialize with 0 and define as weak alias of __signgam.
* include/math.h [!_ISOMAC] (__signgam): Declare.
* math/Makefile (libm-calls): Add w_lgamma_compat.
(tests): Add test-signgam-uchar, test-signgam-uchar-init,
test-signgam-uint, test-signgam-uint-init, test-signgam-ullong and
test-signgam-ullong-init.
(tests-static): Add test-signgam-uchar-static,
test-signgam-uchar-init-static, test-signgam-uint-static,
test-signgam-uint-init-static, test-signgam-ullong-static and
test-signgam-ullong-init-static.
(CFLAGS-test-signgam-uchar.c): New variable.
(CFLAGS-test-signgam-uchar-init.c): Likewise.
(CFLAGS-test-signgam-uchar-static.c): Likewise.
(CFLAGS-test-signgam-uchar-init-static.c): Likewise.
(CFLAGS-test-signgam-uint.c): Likewise.
(CFLAGS-test-signgam-uint-init.c): Likewise.
(CFLAGS-test-signgam-uint-static.c): Likewise.
(CFLAGS-test-signgam-uint-init-static.c): Likewise.
(CFLAGS-test-signgam-ullong.c): Likewise.
(CFLAGS-test-signgam-ullong-init.c): Likewise.
(CFLAGS-test-signgam-ullong-static.c): Likewise.
(CFLAGS-test-signgam-ullong-init-static.c): Likewise.
* math/Versions (libm): Add GLIBC_2.23.
* math/lgamma-compat.h: New file.
* math/test-signgam-main.c: Likewise.
* math/test-signgam-uchar-init-static.c: Likewise.
* math/test-signgam-uchar-init.c: Likewise.
* math/test-signgam-uchar-static.c: Likewise.
* math/test-signgam-uchar.c: Likewise.
* math/test-signgam-uint-init-static.c: Likewise.
* math/test-signgam-uint-init.c: Likewise.
* math/test-signgam-uint-static.c: Likewise.
* math/test-signgam-uint.c: Likewise.
* math/test-signgam-ullong-init-static.c: Likewise.
* math/test-signgam-ullong-init.c: Likewise.
* math/test-signgam-ullong-static.c: Likewise.
* math/test-signgam-ullong.c: Likewise.
* math/w_lgamma.c: Rename to w_lgamma_main.c and replace by
wrapper of w_lgamma_main.c.
* math/w_lgamma_compat.c: New file.
* math/w_lgamma_compatf.c: Likewise.
* math/w_lgamma_compatl.c: Likewise.
* math/w_lgamma_main.c: New file. Based on w_lgamma.c. Include
<lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support
defining compatibility symbols.
(__lgamma): Change to LGFUNC (__lgamma). Use CALL_LGAMMA.
* math/w_lgammaf.c: Rename to w_lgammaf_main.c and replace by
wrapper of w_lgammaf_main.c.
* math/w_lgammaf_main.c: New file. Based on w_lgammaf.c. Include
<lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support
defining compatibility symbols.
(__lgammaf): Change to LGFUNC (__lgammaf). Use CALL_LGAMMA.
* math/w_lgammal.c: Rename to w_lgammal_main.c and replace by
wrapper of w_lgammal_main.c.
* math/w_lgammal_main.c: New file. Based on w_lgammal.c. Include
<lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support
defining compatibility symbols.
(__lgammal): Change to LGFUNC (__lgammal). Use CALL_LGAMMA.
* sysdeps/ia64/fpu/lgamma-compat.h: New file.
* sysdeps/ia64/fpu/w_lgamma.c: Move to ....
* sysdeps/ia64/fpu/w_lgamma_main.c: ...here. Include
<lgamma-compat.h>.
(__ieee754_lgamma): Change to LGFUNC (lgamma). Use CALL_LGAMMA.
(__ieee754_gamma): Define as alias.
* sysdeps/ia64/fpu/w_lgammaf.c: Move to ....
* sysdeps/ia64/fpu/w_lgammaf_main.c: ...here. Include
<lgamma-compat.h>.
(__ieee754_lgammaf): Change to LGFUNC (lgammaf). Use CALL_LGAMMA.
(__ieee754_gammaf): Define as alias.
* sysdeps/ia64/fpu/w_lgammal.c: Move to ....
* sysdeps/ia64/fpu/w_lgammal_main.c: ...here. Include
<lgamma-compat.h>.
(__ieee754_lgammal): Change to LGFUNC (lgammal). Use CALL_LGAMMA.
(__ieee754_gammal): Define as alias.
* sysdeps/ieee754/ldbl-opt/w_lgamma.c: Move to ....
* sysdeps/ieee754/ldbl-opt/w_lgamma_compat.c: ...here. Include
<math/w_lgamma_compat.c>.
[LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (__lgammal_dbl_compat):
Define as alias of __lgamma_compat and use in defining lgammal.
* sysdeps/ieee754/ldbl-opt/w_lgammal.c: Move to ....
* sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c: ...here. Include
<math/lgamma-compat.h> and <math/w_lgamma_compatl.c>.
(USE_AS_COMPAT): New macro.
(LGAMMA_OLD_VER): Undefine and redefine.
(lgammal): Do not define here.
(gammal): Only define here if [GAMMA_ALIAS].
* conform/linknamespace.pl (@whitelist): Remove signgam.
* sysdeps/nacl/libm.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 125 ++++++++++++++++++++
NEWS | 6 +
conform/linknamespace.pl | 4 +-
include/math.h | 2 +
math/Makefile | 24 ++++-
math/Versions | 7 +
math/lgamma-compat.h | 73 ++++++++++++
math/test-signgam-main.c | 71 +++++++++++
math/test-signgam-uchar-init-static.c | 1 +
math/test-signgam-uchar-init.c | 3 +
math/test-signgam-uchar-static.c | 1 +
math/test-signgam-uchar.c | 3 +
math/test-signgam-uint-init-static.c | 1 +
math/test-signgam-uint-init.c | 3 +
math/test-signgam-uint-static.c | 1 +
math/test-signgam-uint.c | 3 +
math/test-signgam-ullong-init-static.c | 1 +
math/test-signgam-ullong-init.c | 3 +
math/test-signgam-ullong-static.c | 1 +
math/test-signgam-ullong.c | 3 +
math/w_lgamma.c | 51 +--------
math/w_lgamma_compat.c | 2 +
math/w_lgamma_compatf.c | 2 +
math/w_lgamma_compatl.c | 2 +
math/w_lgamma_main.c | 59 +++++++++
math/w_lgammaf.c | 42 +------
math/w_lgammaf_main.c | 44 +++++++
math/w_lgammal.c | 49 +--------
math/w_lgammal_main.c | 51 ++++++++
sysdeps/ia64/fpu/lgamma-compat.h | 42 +++++++
sysdeps/ia64/fpu/w_lgamma.c | 80 -------------
sysdeps/ia64/fpu/w_lgamma_main.c | 73 ++++++++++++
sysdeps/ia64/fpu/w_lgammaf.c | 80 -------------
sysdeps/ia64/fpu/w_lgammaf_main.c | 73 ++++++++++++
sysdeps/ia64/fpu/w_lgammal.c | 79 ------------
sysdeps/ia64/fpu/w_lgammal_main.c | 72 +++++++++++
sysdeps/ieee754/ldbl-opt/w_lgamma.c | 6 -
sysdeps/ieee754/ldbl-opt/w_lgamma_compat.c | 7 +
sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c | 11 ++
sysdeps/ieee754/ldbl-opt/w_lgammal.c | 6 -
sysdeps/ieee754/s_signgam.c | 3 +-
sysdeps/nacl/libm.abilist | 5 +
sysdeps/unix/sysv/linux/aarch64/libm.abilist | 5 +
sysdeps/unix/sysv/linux/alpha/libm.abilist | 5 +
sysdeps/unix/sysv/linux/arm/libm.abilist | 5 +
sysdeps/unix/sysv/linux/hppa/libm.abilist | 5 +
sysdeps/unix/sysv/linux/i386/libm.abilist | 5 +
sysdeps/unix/sysv/linux/ia64/libm.abilist | 5 +
sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist | 5 +
sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist | 5 +
sysdeps/unix/sysv/linux/microblaze/libm.abilist | 5 +
sysdeps/unix/sysv/linux/mips/mips32/libm.abilist | 5 +
sysdeps/unix/sysv/linux/mips/mips64/libm.abilist | 5 +
sysdeps/unix/sysv/linux/nios2/libm.abilist | 5 +
.../sysv/linux/powerpc/powerpc32/fpu/libm.abilist | 5 +
.../linux/powerpc/powerpc32/nofpu/libm.abilist | 5 +
.../sysv/linux/powerpc/powerpc64/libm-le.abilist | 5 +
.../unix/sysv/linux/powerpc/powerpc64/libm.abilist | 5 +
sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist | 5 +
sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist | 5 +
sysdeps/unix/sysv/linux/sh/libm.abilist | 5 +
sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist | 5 +
sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist | 5 +
.../sysv/linux/tile/tilegx/tilegx32/libm.abilist | 5 +
.../sysv/linux/tile/tilegx/tilegx64/libm.abilist | 5 +
sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist | 5 +
sysdeps/unix/sysv/linux/x86_64/64/libm.abilist | 5 +
sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist | 5 +
68 files changed, 911 insertions(+), 394 deletions(-)
create mode 100644 math/lgamma-compat.h
create mode 100644 math/test-signgam-main.c
create mode 100644 math/test-signgam-uchar-init-static.c
create mode 100644 math/test-signgam-uchar-init.c
create mode 100644 math/test-signgam-uchar-static.c
create mode 100644 math/test-signgam-uchar.c
create mode 100644 math/test-signgam-uint-init-static.c
create mode 100644 math/test-signgam-uint-init.c
create mode 100644 math/test-signgam-uint-static.c
create mode 100644 math/test-signgam-uint.c
create mode 100644 math/test-signgam-ullong-init-static.c
create mode 100644 math/test-signgam-ullong-init.c
create mode 100644 math/test-signgam-ullong-static.c
create mode 100644 math/test-signgam-ullong.c
create mode 100644 math/w_lgamma_compat.c
create mode 100644 math/w_lgamma_compatf.c
create mode 100644 math/w_lgamma_compatl.c
create mode 100644 math/w_lgamma_main.c
create mode 100644 math/w_lgammaf_main.c
create mode 100644 math/w_lgammal_main.c
create mode 100644 sysdeps/ia64/fpu/lgamma-compat.h
delete mode 100644 sysdeps/ia64/fpu/w_lgamma.c
create mode 100644 sysdeps/ia64/fpu/w_lgamma_main.c
delete mode 100644 sysdeps/ia64/fpu/w_lgammaf.c
create mode 100644 sysdeps/ia64/fpu/w_lgammaf_main.c
delete mode 100644 sysdeps/ia64/fpu/w_lgammal.c
create mode 100644 sysdeps/ia64/fpu/w_lgammal_main.c
delete mode 100644 sysdeps/ieee754/ldbl-opt/w_lgamma.c
create mode 100644 sysdeps/ieee754/ldbl-opt/w_lgamma_compat.c
create mode 100644 sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c
delete mode 100644 sysdeps/ieee754/ldbl-opt/w_lgammal.c
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>From glibc-bugs-return-30549-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 22:53:13 2015
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Subject: [Bug math/15421] lgamma wrongly sets signgam for ISO C
Date: Fri, 20 Nov 2015 22:53:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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>From glibc-bugs-return-30550-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 20 22:56:18 2015
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Subject: [Bug math/19270] [hppa] Shared libm missing __isnanl
Date: Fri, 20 Nov 2015 22:56:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Shared libm missing |[hppa] Shared libm missing
|__isnanl |__isnanl
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>From glibc-bugs-return-30551-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 21 18:41:31 2015
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Subject: [Bug localedata/18568] Update locale data to Unicode 8.0
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Florian Weimer <fweimer at redhat dot com> changed:
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Flags| |review-
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>From glibc-bugs-return-30552-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 22 04:57:28 2015
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Subject: [Bug math/13203] gfortran.dg/bessel_6.f90 in gcc testsuite failed
Date: Sun, 22 Nov 2015 04:57:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Version|unspecified |2.22
Resolution|INVALID |---
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
This failure came back in GCC trunk revision 230708 with glibc 2.22 on x86:
Program aborted. Backtrace:
#0 0x8048a8e in ???
#1 0x8048b01 in ???
#2 0x8048b58 in ???
#3 0xf73ba494 in ???
#4 0x8048800 in ???
FAIL: gfortran.dg/bessel_6.f90 -O0 execution test
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>From glibc-bugs-return-30553-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 22 17:42:08 2015
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Subject: [Bug math/13203] gfortran.dg/bessel_6.f90 in gcc testsuite failed
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |INVALID
--- Comment #4 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Still not a valid glibc bug report. A valid report would give a specific input
to a named glibc function, as a C hex float constant, the observed result as a
hex float, and the expected result as a hex float, with the two differing by
over 9ulp (and even then it would likely duplicate the other open Bessel
function issues).
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>From glibc-bugs-return-30554-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 22 17:59:13 2015
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Subject: [Bug math/13203] gfortran.dg/bessel_6.f90 in gcc testsuite failed
Date: Sun, 22 Nov 2015 17:59:00 -0000
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--- Comment #5 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Also: if a problem was resolved then reappeared after other changes to glibc or
other toolchain components, open a new bug report (with sufficient information)
rather than reopening the old bug report. Reopening old bugs is *only*
appropriate when a glibc fix had to be reverted, or if it turns out that the
original fix never actually completely resolved the specific cases described in
the original bug report, not simply because you see similar symptoms to the old
report at a later date without an analysis demonstrating it's the same bug,
never-fixed (bug continuously present) or fix-reverted.
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Subject: [Bug math/19270] [hppa] Shared libm missing __isnanl
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--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> ---
Patch here:
https://sourceware.org/ml/libc-alpha/2015-11/msg00520.html
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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19280] New: [2.22 Regression] gfortran.dg/bessel_6.f90
Date: Sun, 22 Nov 2015 23:28:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19280
Bug ID: 19280
Summary: [2.22 Regression] gfortran.dg/bessel_6.f90
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
gfortran.dg/bessel_6.f90 in gcc testsuite failed with glibc 2.22
on i686:
[hjl@gnu-ivb-1 gcc]$ gfortran -g
/export/gnu/import/git/sources/gcc/gcc/testsuite/gfortran.dg/bessel_6.f90 -m32
[hjl@gnu-ivb-1 gcc]$ ./a.out
Program aborted. Backtrace:
#0 0xF75CEAEE
#1 0xF75CFA00
#2 0xF7685B07
#3 0x8048803 in compare.3309 at bessel_6.f90:46
#4 0x8048876 in MAIN__ at bessel_6.f90:26
Aborted
[hjl@gnu-ivb-1 gcc]$
The same binary ran fine with glibc 2.21. Glibc 2.23 may have the
same problem.
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Subject: [Bug math/19280] [2.22 Regression] gfortran.dg/bessel_6.f90
Date: Mon, 23 Nov 2015 01:09:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
This is not a sufficient bug report. You need to give specific inputs (as hex
floats) to a specific function, with specific outputs you observe and expected
outputs (both as hex floats), not refer to an external project where the
problem could well be in the external project.
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Subject: [Bug math/19280] [2.22 Regression] gfortran.dg/bessel_6.f90
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Here is the testcase:
---bessel_6.f90---
! { dg-do run { xfail spu-*-* } }
! { dg-add-options ieee }
!
! PR fortran/36158
! PR fortran/33197
!
! XFAILed for SPU targets since we don't have an accurate library
! implementation of the single-precision Bessel functions.
!
! Run-time tests for transformations BESSEL_JN
!
implicit none
real,parameter :: values(*) = [0.0, 0.5, 1.0, 0.9,
1.8,2.0,3.0,4.0,4.25,8.0,34.53, 475.78]
real,parameter :: myeps(size(values)) = epsilon(0.0) &
* [2, 7, 5, 6, 9, 12, 12, 7, 7, 8, 92, 15 ]
! The following is sufficient for me - the values above are a bit
! more tolerant
! * [0, 5, 3, 4, 6, 7, 7, 5, 5, 6, 66, 4 ]
integer,parameter :: mymax(size(values)) = &
[100, 17, 23, 21, 27, 28, 32, 35, 31, 41, 47, 37 ]
integer, parameter :: Nmax = 100
real :: rec(0:Nmax), lib(0:Nmax)
integer :: i
do i = 1, ubound(values,dim=1)
call compare(mymax(i), values(i), myeps(i))
end do
contains
subroutine compare(mymax, X, myeps)
integer :: i, nit, mymax
real X, myeps, myeps2
rec(0:mymax) = BESSEL_JN(0, mymax, X)
lib(0:mymax) = [ (BESSEL_JN(i, X), i=0,mymax) ]
!print *, 'YN for X = ', X, ' -- Epsilon = ',epsilon(x)
do i = 0, mymax
! print '(i2,2e17.9,e12.2,f18.10,2l3)', i, rec(i), lib(i), &
! rec(i)-lib(i), ((rec(i)-lib(i))/rec(i))/epsilon(x), &
! rec(i) == lib(i), abs((rec(i)-lib(i))/rec(i)) < myeps
if (rec(i) == lib(i)) CYCLE
if (abs((rec(i)-lib(i))/rec(i)) > myeps) &
call abort()
end do
end
end
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Subject: [Bug libc/19242] strtol incorrect in Turkish locales
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----------------------------------------------------------------------------
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--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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Subject: [Bug libc/19242] strtol incorrect in Turkish locales
Date: Mon, 23 Nov 2015 08:52:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f5eee5c72b2ab56f3faf4f46729fe82805efde68
commit f5eee5c72b2ab56f3faf4f46729fe82805efde68
Author: Joseph Myers <joseph@codesourcery.com>
Date: Mon Nov 23 08:50:53 2015 +0000
Fix strtol in Turkish locales (bug 19242).
The implementations of strtol and related functions use
locale-specific conversions to upper case before determining whether a
character is a valid letter in the argument. This means that in
Turkish locales such as tr_TR.UTF-8 and tr_TR.ISO-8859-9, "i" is
interpreted as not being a valid number, when if the base passed to
strtol is 19 or more it should be interpreted as the number 18.
ISO C explicitly says "The letters from a (or A) through z (or Z) are
ascribed the values 10 through 35", so clearly intends the standard
ASCII letters (otherwise you wouldn't generally have exactly 26
letters to ascribe such values) (whereas white-space must be
identified according to the locale). In particular, 'i' and 'I' must
be understood to be in that sequence.
This patch makes the code do the case conversions and classification
in the C locale; the user's locale remains used for whitespace testing
(explicitly correct according to ISO C). Note that the way the code
worked, the only non-ASCII letter that would previously have been
accepted would have been the Turkish 'ı' (dotless 'i'), because the
uppercase version of that in Turkish locales is 'I'. This patch means
that will no longer be accepted, which seems appropriate.
Tested for x86_64 and x86.
[BZ #19242]
* stdlib/strtol_l.c (ISALPHA): Use _nl_C_locobj_ptr for locale.
(TOUPPER): Likewise.
* stdlib/tst-strtol-locale-main.c: New file.
* stdlib/tst-strtol-locale.c: Likewise.
* stdlib/Makefile (tests): Add tst-strtol-locale.
[$(run-built-tests) = yes] (LOCALES): Add tr_TR.ISO-8859-9.
[$(run-built-tests) = yes] ($(objpfx)tst-strtol-locale.out):
Depend on $(gen-locales).
* wcsmbs/tst-wcstol-locale.c: New file.
* wcsmbs/Makefile (tests): Add tst-wcstol-locale.
[$(run-built-tests) = yes] (LOCALES): Add tr_TR.UTF-8 and
tr_TR.ISO-8859-9.
[$(run-built-tests) = yes] ($(objpfx)tst-wcstol-locale.out):
Depend on $(gen-locales).
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 18 ++++++++
stdlib/Makefile | 7 ++-
stdlib/strtol_l.c | 8 ++--
stdlib/tst-strtol-locale-main.c | 87 +++++++++++++++++++++++++++++++++++++++
stdlib/tst-strtol-locale.c | 25 +++++++++++
wcsmbs/Makefile | 6 ++-
wcsmbs/tst-wcstol-locale.c | 25 +++++++++++
7 files changed, 168 insertions(+), 8 deletions(-)
create mode 100644 stdlib/tst-strtol-locale-main.c
create mode 100644 stdlib/tst-strtol-locale.c
create mode 100644 wcsmbs/tst-wcstol-locale.c
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19280] [2.22 Regression] gfortran.dg/bessel_6.f90
Date: Mon, 23 Nov 2015 09:33:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Still insufficient information. Please provide a test in C that involves
exactly one call to whatever function is said to be buggy, with a hex float
value as input. I can't even tell from this test whether it is jn, jnf or jnl
that is said to have a bug, let alone what the inputs to the function are. Nor
can I tell what the expected results are.
Several of what appear to be inputs in your Fortran test are numbers such as
475.78 that are not exactly representable in binary floating point. As such,
if Fortran semantics or the front end were to compute expected results based on
such a number interpreted in different precision to the function called at
runtime, a large error would indicate a bug in the testcase, not a bug in
glibc. This illustrates the importance of providing a C test with hex float
inputs and expectations (and the hex float inputs being in the correct
precision for the C function in question so no implicit conversions are
involved).
Since this is for 32-bit x86, my guess is that the test is involving
numerically sensitive cases, where slight perturbations of compiler code
generation affecting where excess precision occurs internally can cause large
changes to results. This is not of course a regression since it would just
move around slightly where the most inaccurate cases are. It would also be a
bug in the GCC testcase that it's testing such numerically sensitive cases (in
addition to any bug if the expectations are based on computations for an input
in the wrong precision).
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/4578] Assertion `...r_state == RT_CONSISTENT' failed!
Date: Mon, 23 Nov 2015 13:05:00 -0000
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Stephen Robinson <stephen.robinson at intel dot com> changed:
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----------------------------------------------------------------------------
CC| |stephen.robinson at intel dot com
--- Comment #7 from Stephen Robinson <stephen.robinson at intel dot com> ---
I have run into this bug in glibc-2.16.0 and can also confirm that it is still
present in glibc-2.22.
The assertion was removed Jan 21st 2015 in changeset ccdb048, but the
underlying bug is still present.
The bug occurs because there is no protection to ensure that the loader's
internal structures are not being modified when a fork occurs and the child
process receives a snapshot of those structures.
I have created a new test case that reliably reproduces the bug as long as
there are at least two CPUs available so that the threads can run in parallel.
The existing patch from Larry Stewart fixes this issue for me, though I've also
updated it to acquire the new dl_load_write_lock.
While investigating this issue I also discovered a deadlock due to
dl_load_write_lock not being reinitialised for the child process during fork. I
will open a new bug for this.
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>From glibc-bugs-return-30564-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 23 13:07:56 2015
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Subject: [Bug nptl/4578] Assertion `...r_state == RT_CONSISTENT' failed!
Date: Mon, 23 Nov 2015 13:07:00 -0000
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--- Comment #9 from Stephen Robinson <stephen.robinson at intel dot com> ---
Created attachment 8805
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updated patch for glibc-2.22
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>From glibc-bugs-return-30563-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 23 13:07:12 2015
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Subject: [Bug nptl/4578] Assertion `...r_state == RT_CONSISTENT' failed!
Date: Mon, 23 Nov 2015 13:07:00 -0000
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--- Comment #8 from Stephen Robinson <stephen.robinson at intel dot com> ---
Created attachment 8804
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reliable test case
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>From glibc-bugs-return-30565-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 23 13:17:07 2015
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Subject: [Bug dynamic-link/19282] New: dl_load_write_lock isn't reinitialised during fork
Date: Mon, 23 Nov 2015 13:17:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19282
Bug ID: 19282
Summary: dl_load_write_lock isn't reinitialised during fork
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: stephen.robinson at intel dot com
Target Milestone: ---
While investigating bug 4578 I ran into a deadlock due to dl_load_write_lock
not being reinitialised for the child process during a fork.
If one thread calls dl_iterate_phdr() and then another thread calls fork() then
the child process ends up with a dl_load_write_lock that is already locked by
the thread that called dl_iterate_phdr().
The fork call already reinitialises dl_load_lock but reinitialisation of
dl_load_write_lock was not added to fork when that new lock was created.
I have created and attached a test case that recreates this and a patch to fix
it.
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>From glibc-bugs-return-30566-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 23 13:20:31 2015
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Subject: [Bug dynamic-link/19282] dl_load_write_lock isn't reinitialised during fork
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--- Comment #1 from Stephen Robinson <stephen.robinson at intel dot com> ---
Created attachment 8806
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test case
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Subject: [Bug dynamic-link/19282] dl_load_write_lock isn't reinitialised during fork
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--- Comment #2 from Stephen Robinson <stephen.robinson at intel dot com> ---
Created attachment 8807
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patch
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>From glibc-bugs-return-30568-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 23 13:22:40 2015
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Subject: [Bug nptl/4578] Assertion `...r_state == RT_CONSISTENT' failed!
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--- Comment #10 from Stephen Robinson <stephen.robinson at intel dot com> ---
I've opened bug 19282 for the related issue of dl_load_write_lock not being
reinitialised during fork
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>From glibc-bugs-return-30569-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 23 17:36:33 2015
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Subject: [Bug network/19257] Per-thread memory leak in __res_vinit with IPv6 nameservers
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Paul Pluzhnikov <ppluzhnikov at google dot com> changed:
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--- Comment #1 from Paul Pluzhnikov <ppluzhnikov at google dot com> ---
Do you have a small reproducer?
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>From glibc-bugs-return-30570-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 23 18:05:35 2015
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Subject: [Bug network/19257] Per-thread memory leak in __res_vinit with IPv6 nameservers
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--- Comment #2 from mschiffer+misc@universe-factory.net ---
Created attachment 8808
--> https://sourceware.org/bugzilla/attachment.cgi?id=8808&action=edit
Reproducer
While writing the reproducer, I've noticed that there is an additional
constraint for this bug to happen: The hostname must not actually need the
resolver - in this case, because the requested hostname "localhost" can be
found in /etc/hosts. As soon as a single request is actually sent to the
nameserver, the bug disappears, but as long as only requests are made that can
be resolved from /etc/hosts, the memory is leaked.
When the request is made in the main thread, valgrind reports "still reachable:
28 bytes in 1 blocks", when it is moved to another thread, it will become
"definitely lost".
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>From glibc-bugs-return-30571-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 24 02:28:54 2015
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Subject: [Bug locale/19267] LSB test cases about locale are Failed on GLibc(2.22)
Date: Tue, 24 Nov 2015 02:28:00 -0000
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--- Comment #2 from li xin <lixin.fnst at cn dot fujitsu.com> ---
(In reply to Andreas Schwab from comment #1)
> Please test with commit 6c84109.
After I update Glibc to commit 6c84109,those case are passed.
Thank you very much.
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>From glibc-bugs-return-30572-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 24 06:29:06 2015
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Subject: [Bug localedata/18568] Update locale data to Unicode 8.0
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--- Comment #15 from Mike FABIAN <maiku.fabian at gmail dot com> ---
The latest patch is here:
https://sourceware.org/ml/libc-alpha/2015-07/msg00836.html
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Subject: [Bug locale/19267] LSB test cases about locale are Failed on GLibc(2.22)
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
*** This bug has been marked as a duplicate of bug 18589 ***
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Subject: [Bug locale/18589] sort-test.sh fails at random
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CC| |lixin.fnst at cn dot fujitsu.com
--- Comment #14 from Florian Weimer <fweimer at redhat dot com> ---
*** Bug 19267 has been marked as a duplicate of this bug. ***
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>From glibc-bugs-return-30575-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 24 13:43:07 2015
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Subject: [Bug libc/17062] fnmatch: buffer overflow read from pattern "[[:alpha:]'[:alpha:]"
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, release/2.19/master has been updated
via 60f10f2326aa47c7f49b752c1730e084b2319aa7 (commit)
from 83e9e8b0464dcff36930b8bb53d04ac3b551b5a3 (commit)
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revisions in full, below.
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=60f10f2326aa47c7f49b752c1730e084b2319aa7
commit 60f10f2326aa47c7f49b752c1730e084b2319aa7
Author: Andreas Schwab <schwab@suse.de>
Date: Wed Jun 18 11:58:45 2014 +0200
Don't read past end of pattern in fnmatch (BZ #17062)
(cherry picked from commit b3a9f56ba59c3d8eadd3135a1c25c37a63151450)
Conflicts:
NEWS
posix/Makefile
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 ++++++++
NEWS | 4 ++--
posix/Makefile | 2 +-
posix/fnmatch_loop.c | 13 +++----------
stdlib/tst-system.c => posix/tst-fnmatch3.c | 14 +++++++-------
5 files changed, 21 insertions(+), 20 deletions(-)
copy stdlib/tst-system.c => posix/tst-fnmatch3.c (77%)
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>From glibc-bugs-return-30576-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 24 15:34:40 2015
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Subject: [Bug libc/19285] New: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing MAP_HUGETLB and MAP_STACK defines
Date: Tue, 24 Nov 2015 15:34:00 -0000
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Bug ID: 19285
Summary: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h:
missing MAP_HUGETLB and MAP_STACK defines
Product: glibc
Version: unspecified
URL: http://git.kernel.org/cgit/linux/kernel/git/torvalds/l
inux.git/commit/?id=736d2169338a50c8814efc186b5423aee4
3b0c68
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: deller at gmx dot de
CC: carlos at redhat dot com, dave.anglin at bell dot net,
drepper.fsp at gmail dot com
Target Milestone: ---
Host: hppa-unknown-linux-gnu
Target: hppa-unknown-linux-gnu
Build: hppa-unknown-linux-gnu
Hugepage support was just added to upstream Linux kernel.
In order for userspace to be able to use huge pages, the define for MAP_HUGETLB
is currently missing from glibc header files.
The attached patch adds the missing define.
Additionally:
- MAP_STACK is missing too and should be added.
- the MADV_XX_PAGES flags were never used in the Linux kernel (they were added
by me many years ago based on a proposed patch from someone for Linux kernel
which was never applied). Let's get rid of them too, as they were dropped from
upstream kernel sources as well.
The attached patch fixes all mentioned issues and brings
sysdeps/unix/sysv/linux/hppa/bits/mman.h up in sync with Linux kernel.
Relevant upstream kernel commits are:
1.
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=736d2169338a50c8814efc186b5423aee43b0c68
2.
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dcbf0d299c00ed4f82ea8d6e359ad88a5182f9b8
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Subject: [Bug libc/19285] [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing MAP_HUGETLB and MAP_STACK defines
Date: Tue, 24 Nov 2015 15:38:00 -0000
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--- Comment #1 from Helge Deller <deller at gmx dot de> ---
Created attachment 8811
--> https://sourceware.org/bugzilla/attachment.cgi?id=8811&action=edit
add MAP_HUGETLB and MAP_STACK, drop MADV_XXX_PAGES defines
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https://sourceware.org/bugzilla/show_bug.cgi?id=19164
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2359035ac52db69eb427c3b4b9d9297c98d2b225
commit 2359035ac52db69eb427c3b4b9d9297c98d2b225
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Nov 24 17:21:01 2015 +0100
Remove CPU set size checking from affinity functions [BZ #19143]
With current kernel versions, the check does not reliably detect that
unavailable CPUs are requested, for these reasons:
(1) The kernel will silently ignore non-allowed CPUs, that is, CPUs
which are physically present but disallowed for the thread
based on system configuration.
(2) Similarly, CPU bits which lack an online CPU (possible CPUs)
are ignored.
(3) The existing probing code assumes that the CPU mask size is a
power of two and at least 1024. Neither has it to be a power
of two, nor is the minimum possible value 1024, so the value
determined is often too large. This means that the CPU set
size check in glibc accepts CPU bits beyond the actual hard
system limit.
(4) Future kernel versions may not even have a fixed CPU set size.
After the removal of the probing code, the kernel still returns
EINVAL if no CPU in the requested set remains which can run the
thread after the affinity change.
Applications which care about the exact affinity mask will have
to query it using sched_getaffinity after setting it. Due to the
effects described above, this commit does not change this.
The new tests supersede tst-getcpu, which is removed. This
addresses bug 19164 because the new tests allocate CPU sets
dynamically.
* nptl/check-cpuset.h: Remove.
* nptl/pthread_attr_setaffinity.c (__pthread_attr_setaffinity_new):
Remove CPU set size check.
* nptl/pthread_setattr_default_np.c (pthread_setattr_default_np):
Likewise.
* sysdeps/unix/sysv/linux/check-cpuset.h: Remove.
* sysdeps/unix/sysv/linux/pthread_setaffinity.c
(__kernel_cpumask_size, __determine_cpumask_size): Remove.
(__pthread_setaffinity_new): Remove CPU set size check.
* sysdeps/unix/sysv/linux/sched_setaffinity.c
(__kernel_cpumask_size): Remove.
(__sched_setaffinity_new): Remove CPU set size check.
* manual/threads.texi (Default Thread Attributes): Remove stale
reference to check_cpuset_attr, determine_cpumask_size in comment.
* sysdeps/unix/sysv/linux/Makefile [$(subdir) == posix] (tests):
Remove tst-getcpu. Add tst-affinity, tst-affinity-pid.
[$(subdir) == nptl] (tests): Add tst-thread-affinity-pthread,
tst-thread-affinity-pthread2, tst-thread-affinity-sched.
* sysdeps/unix/sysv/linux/tst-affinity.c: New file.
* sysdeps/unix/sysv/linux/tst-affinity-pid.c: New file.
* sysdeps/unix/sysv/linux/tst-skeleton-affinity.c: New skeleton test
file.
* sysdeps/unix/sysv/linux/tst-thread-affinity-sched.c: New file.
* sysdeps/unix/sysv/linux/tst-thread-affinity-pthread.c: New file.
* sysdeps/unix/sysv/linux/tst-thread-affinity-pthread2.c: New file.
* sysdeps/unix/sysv/linux/tst-thread-skeleton-affinity.c: New
skeleton test file.
* sysdeps/unix/sysv/linux/tst-getcpu.c: Remove. Superseded by
tst-affinity-pid.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 33 +++
NEWS | 8 +
manual/threads.texi | 2 -
nptl/check-cpuset.h | 32 ---
nptl/pthread_attr_setaffinity.c | 6 -
nptl/pthread_setattr_default_np.c | 5 -
sysdeps/unix/sysv/linux/Makefile | 6 +-
sysdeps/unix/sysv/linux/check-cpuset.h | 48 ----
sysdeps/unix/sysv/linux/pthread_setaffinity.c | 48 ----
sysdeps/unix/sysv/linux/sched_setaffinity.c | 37 ---
sysdeps/unix/sysv/linux/tst-affinity-pid.c | 201 ++++++++++++++
sysdeps/unix/sysv/linux/tst-affinity.c | 43 +++
sysdeps/unix/sysv/linux/tst-getcpu.c | 59 ----
sysdeps/unix/sysv/linux/tst-skeleton-affinity.c | 278 +++++++++++++++++++
.../unix/sysv/linux/tst-skeleton-thread-affinity.c | 280 ++++++++++++++++++++
.../unix/sysv/linux/tst-thread-affinity-pthread.c | 49 ++++
.../unix/sysv/linux/tst-thread-affinity-pthread2.c | 95 +++++++
.../unix/sysv/linux/tst-thread-affinity-sched.c | 36 +++
18 files changed, 1027 insertions(+), 239 deletions(-)
delete mode 100644 nptl/check-cpuset.h
delete mode 100644 sysdeps/unix/sysv/linux/check-cpuset.h
create mode 100644 sysdeps/unix/sysv/linux/tst-affinity-pid.c
create mode 100644 sysdeps/unix/sysv/linux/tst-affinity.c
delete mode 100644 sysdeps/unix/sysv/linux/tst-getcpu.c
create mode 100644 sysdeps/unix/sysv/linux/tst-skeleton-affinity.c
create mode 100644 sysdeps/unix/sysv/linux/tst-skeleton-thread-affinity.c
create mode 100644 sysdeps/unix/sysv/linux/tst-thread-affinity-pthread.c
create mode 100644 sysdeps/unix/sysv/linux/tst-thread-affinity-pthread2.c
create mode 100644 sysdeps/unix/sysv/linux/tst-thread-affinity-sched.c
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>From glibc-bugs-return-30578-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 24 16:38:39 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19143] Remove CPU set size checking from sched_setaffinity, pthread_setaffinity_np
Date: Tue, 24 Nov 2015 16:38:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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from c100dca32a6859a47789ddcbb5679e74f8d92a41 (commit)
Those revisions listed above that are new to this repository have
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2359035ac52db69eb427c3b4b9d9297c98d2b225
commit 2359035ac52db69eb427c3b4b9d9297c98d2b225
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Nov 24 17:21:01 2015 +0100
Remove CPU set size checking from affinity functions [BZ #19143]
With current kernel versions, the check does not reliably detect that
unavailable CPUs are requested, for these reasons:
(1) The kernel will silently ignore non-allowed CPUs, that is, CPUs
which are physically present but disallowed for the thread
based on system configuration.
(2) Similarly, CPU bits which lack an online CPU (possible CPUs)
are ignored.
(3) The existing probing code assumes that the CPU mask size is a
power of two and at least 1024. Neither has it to be a power
of two, nor is the minimum possible value 1024, so the value
determined is often too large. This means that the CPU set
size check in glibc accepts CPU bits beyond the actual hard
system limit.
(4) Future kernel versions may not even have a fixed CPU set size.
After the removal of the probing code, the kernel still returns
EINVAL if no CPU in the requested set remains which can run the
thread after the affinity change.
Applications which care about the exact affinity mask will have
to query it using sched_getaffinity after setting it. Due to the
effects described above, this commit does not change this.
The new tests supersede tst-getcpu, which is removed. This
addresses bug 19164 because the new tests allocate CPU sets
dynamically.
* nptl/check-cpuset.h: Remove.
* nptl/pthread_attr_setaffinity.c (__pthread_attr_setaffinity_new):
Remove CPU set size check.
* nptl/pthread_setattr_default_np.c (pthread_setattr_default_np):
Likewise.
* sysdeps/unix/sysv/linux/check-cpuset.h: Remove.
* sysdeps/unix/sysv/linux/pthread_setaffinity.c
(__kernel_cpumask_size, __determine_cpumask_size): Remove.
(__pthread_setaffinity_new): Remove CPU set size check.
* sysdeps/unix/sysv/linux/sched_setaffinity.c
(__kernel_cpumask_size): Remove.
(__sched_setaffinity_new): Remove CPU set size check.
* manual/threads.texi (Default Thread Attributes): Remove stale
reference to check_cpuset_attr, determine_cpumask_size in comment.
* sysdeps/unix/sysv/linux/Makefile [$(subdir) == posix] (tests):
Remove tst-getcpu. Add tst-affinity, tst-affinity-pid.
[$(subdir) == nptl] (tests): Add tst-thread-affinity-pthread,
tst-thread-affinity-pthread2, tst-thread-affinity-sched.
* sysdeps/unix/sysv/linux/tst-affinity.c: New file.
* sysdeps/unix/sysv/linux/tst-affinity-pid.c: New file.
* sysdeps/unix/sysv/linux/tst-skeleton-affinity.c: New skeleton test
file.
* sysdeps/unix/sysv/linux/tst-thread-affinity-sched.c: New file.
* sysdeps/unix/sysv/linux/tst-thread-affinity-pthread.c: New file.
* sysdeps/unix/sysv/linux/tst-thread-affinity-pthread2.c: New file.
* sysdeps/unix/sysv/linux/tst-thread-skeleton-affinity.c: New
skeleton test file.
* sysdeps/unix/sysv/linux/tst-getcpu.c: Remove. Superseded by
tst-affinity-pid.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 33 +++
NEWS | 8 +
manual/threads.texi | 2 -
nptl/check-cpuset.h | 32 ---
nptl/pthread_attr_setaffinity.c | 6 -
nptl/pthread_setattr_default_np.c | 5 -
sysdeps/unix/sysv/linux/Makefile | 6 +-
sysdeps/unix/sysv/linux/check-cpuset.h | 48 ----
sysdeps/unix/sysv/linux/pthread_setaffinity.c | 48 ----
sysdeps/unix/sysv/linux/sched_setaffinity.c | 37 ---
sysdeps/unix/sysv/linux/tst-affinity-pid.c | 201 ++++++++++++++
sysdeps/unix/sysv/linux/tst-affinity.c | 43 +++
sysdeps/unix/sysv/linux/tst-getcpu.c | 59 ----
sysdeps/unix/sysv/linux/tst-skeleton-affinity.c | 278 +++++++++++++++++++
.../unix/sysv/linux/tst-skeleton-thread-affinity.c | 280 ++++++++++++++++++++
.../unix/sysv/linux/tst-thread-affinity-pthread.c | 49 ++++
.../unix/sysv/linux/tst-thread-affinity-pthread2.c | 95 +++++++
.../unix/sysv/linux/tst-thread-affinity-sched.c | 36 +++
18 files changed, 1027 insertions(+), 239 deletions(-)
delete mode 100644 nptl/check-cpuset.h
delete mode 100644 sysdeps/unix/sysv/linux/check-cpuset.h
create mode 100644 sysdeps/unix/sysv/linux/tst-affinity-pid.c
create mode 100644 sysdeps/unix/sysv/linux/tst-affinity.c
delete mode 100644 sysdeps/unix/sysv/linux/tst-getcpu.c
create mode 100644 sysdeps/unix/sysv/linux/tst-skeleton-affinity.c
create mode 100644 sysdeps/unix/sysv/linux/tst-skeleton-thread-affinity.c
create mode 100644 sysdeps/unix/sysv/linux/tst-thread-affinity-pthread.c
create mode 100644 sysdeps/unix/sysv/linux/tst-thread-affinity-pthread2.c
create mode 100644 sysdeps/unix/sysv/linux/tst-thread-affinity-sched.c
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19143] Remove CPU set size checking from sched_setaffinity, pthread_setaffinity_np
Date: Tue, 24 Nov 2015 16:42:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.23.
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19164] tst-getcpu fails with many possible CPUs
Date: Tue, 24 Nov 2015 16:42:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.23.
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From: "markus at trippelsdorf dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19289] New: gcc-6 emits movaps instructions for dl-lookup.o with -O3
Date: Tue, 24 Nov 2015 20:50:00 -0000
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Bug ID: 19289
Summary: gcc-6 emits movaps instructions for dl-lookup.o with
-O3
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: markus at trippelsdorf dot de
Target Milestone: ---
markus@x4 elf % gcc dl-lookup.c -c -std=gnu11 -fgnu89-inline -O3 -Wall -Wundef
-Wwrite-strings -fmerge-all-constants -frounding-math -g3 -pipe
-Wstrict-prototypes -Wold-style-definition -fexceptions
-fasynchronous-unwind-tables -ftls-model=initial-exec -I../include
-I/var/tmp/glibc-build/elf -I/var/tmp/glibc-build
-I../sysdeps/unix/sysv/linux/x86_64/64 -I../sysdeps/unix/sysv/linux/x86_64
-I../sysdeps/unix/sysv/linux/x86 -I../sysdeps/unix/sysv/linux/wordsize-64
-I../sysdeps/x86_64/nptl -I../sysdeps/unix/sysv/linux/include
-I../sysdeps/unix/sysv/linux -I../sysdeps/nptl -I../sysdeps/pthread
-I../sysdeps/gnu -I../sysdeps/unix/inet -I../sysdeps/unix/sysv
-I../sysdeps/unix/x86_64 -I../sysdeps/unix -I../sysdeps/posix
-I../sysdeps/x86_64/64 -I../sysdeps/x86_64/fpu -I../sysdeps/x86/fpu/include
-I../sysdeps/x86/fpu -I../sysdeps/x86_64 -I../sysdeps/x86
-I../sysdeps/ieee754/ldbl-96 -I../sysdeps/ieee754/dbl-64/wordsize-64
-I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32
-I../sysdeps/wordsize-64 -I../sysdeps/ieee754 -I../sysdeps/generic -I..
-I../libio -I. -nostdinc -isystem
/usr/lib/gcc/x86_64-pc-linux-gnu/6.0.0/include -isystem
/usr/lib/gcc/x86_64-pc-linux-gnu/6.0.0/include-fixed -isystem /usr/include
-D_LIBC_REENTRANT -include /var/tmp/glibc-build/libc-modules.h
-DMODULE_NAME=libc -include ../include/libc-symbols.h -o
/var/tmp/glibc-build/elf/dl-lookup.o -MD -MP -MF
/var/tmp/glibc-build/elf/dl-lookup.o.dt -MT
/var/tmp/glibc-build/elf/dl-lookup.o
markus@x4 elf % objdump -dr /var/tmp/glibc-build/elf/dl-lookup.o | grep movaps
d74: 0f 29 45 80 movaps %xmm0,-0x80(%rbp)
ebb: 0f 29 45 90 movaps %xmm0,-0x70(%rbp)
Naively adding "-mno-sse -mno-mmx" doesn't work:
markus@x4 elf % gcc dl-lookup.c -c -std=gnu11 -fgnu89-inline -mno-sse -mno-mmx
-O3 -Wall -Wundef -Wwrite-strings -fmerge-all-constants -frounding-math -g3
-pipe -Wstrict-prototypes -Wold-style-definition -fexceptions
-fasynchronous-unwind-tables -ftls-model=initial-exec -I../include
-I/var/tmp/glibc-build/elf -I/var/tmp/glibc-build
-I../sysdeps/unix/sysv/linux/x86_64/64 -I../sysdeps/unix/sysv/linux/x86_64
-I../sysdeps/unix/sysv/linux/x86 -I../sysdeps/unix/sysv/linux/wordsize-64
-I../sysdeps/x86_64/nptl -I../sysdeps/unix/sysv/linux/include
-I../sysdeps/unix/sysv/linux -I../sysdeps/nptl -I../sysdeps/pthread
-I../sysdeps/gnu -I../sysdeps/unix/inet -I../sysdeps/unix/sysv
-I../sysdeps/unix/x86_64 -I../sysdeps/unix -I../sysdeps/posix
-I../sysdeps/x86_64/64 -I../sysdeps/x86_64/fpu -I../sysdeps/x86/fpu/include
-I../sysdeps/x86/fpu -I../sysdeps/x86_64 -I../sysdeps/x86
-I../sysdeps/ieee754/ldbl-96 -I../sysdeps/ieee754/dbl-64/wordsize-64
-I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32
-I../sysdeps/wordsize-64 -I../sysdeps/ieee754 -I../sysdeps/generic -I..
-I../libio -I. -nostdinc -isystem
/usr/lib/gcc/x86_64-pc-linux-gnu/6.0.0/include -isystem
/usr/lib/gcc/x86_64-pc-linux-gnu/6.0.0/include-fixed -isystem /usr/include
-D_LIBC_REENTRANT -include /var/tmp/glibc-build/libc-modules.h
-DMODULE_NAME=libc -include ../include/libc-symbols.h -o
/var/tmp/glibc-build/elf/dl-lookup.o -MD -MP -MF
/var/tmp/glibc-build/elf/dl-lookup.o.dt -MT
/var/tmp/glibc-build/elf/dl-lookup.o
In file included from ../include/bits/stdlib-float.h:6:0,
from ../stdlib/stdlib.h:954,
from ../include/stdlib.h:10,
from dl-lookup.c:21:
../stdlib/bits/stdlib-float.h: In function ‘atof’:
../stdlib/bits/stdlib-float.h:27:1: error: SSE register return with SSE
disabled
{
^
Unfortunately "make check" doesn't catch this issue (although
tst-ld-sse-use.out really should).
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19289] gcc-6 emits movaps instructions for dl-lookup.o with -O3
Date: Tue, 24 Nov 2015 21:16:00 -0000
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--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
Forgot to mention: This causes the dynamic linker to segfault:
markus@x4 glibc-build % gdb --args
/var/tmp/glibc-build/elf/ld-linux-x86-64.so.2 /home/markus/bin/xmonad
Reading symbols from /var/tmp/glibc-build/elf/ld-linux-x86-64.so.2...done.
(gdb) run
Starting program: /var/tmp/glibc-build/elf/ld-linux-x86-64.so.2
/home/markus/bin/xmonad
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
Program received signal SIGSEGV, Segmentation fault.
_dl_lookup_symbol_x (undef_name=0x7ffff75cb3c5 "__gmpn_invert_limb",
undef_map=0x7ffff76494d0, ref=ref@entry=0x7fffffffa170,
symbol_scope=0x7ffff7649828, version=0x0,
type_class=type_class@entry=1, flags=1, skip_map=0x0) at dl-lookup.c:809
809 struct sym_val current_value = { NULL, NULL };
(gdb) bt
#0 _dl_lookup_symbol_x (undef_name=0x7ffff75cb3c5 "__gmpn_invert_limb",
undef_map=0x7ffff76494d0, ref=ref@entry=0x7fffffffa170,
symbol_scope=0x7ffff7649828, version=0x0,
type_class=type_class@entry=1, flags=1, skip_map=0x0) at dl-lookup.c:809
#1 0x0000555555564413 in _dl_fixup (l=<optimized out>, reloc_arg=<optimized
out>) at ../elf/dl-runtime.c:111
#2 0x000055555556ce1f in _dl_runtime_resolve_sse () at
../sysdeps/x86_64/dl-trampoline.h:112
#3 0x00007ffff762093a in __gmpn_divrem_1 () from /usr/lib/libgmp.so.10
#4 0xee6b280000000000 in ?? ()
#5 0x00007ffff6b0b138 in ?? ()
#6 0x00007ffff6b057d0 in ?? ()
#7 0x00000000ffffffe2 in ?? ()
#8 0x00007ffff6b057b8 in ?? ()
#9 0x00007ffff6b051b0 in ?? ()
#10 0x00007ffff6b0b1b0 in ?? ()
#11 0x00000000006b47d8 in ?? ()
#12 0x00000000006142a9 in ?? ()
#13 0x0000000000000000 in ?? ()
(gdb) disass
Dump of assembler code for function _dl_lookup_symbol_x:
...
0x000055555555e915 <+117>: jne 0x55555555e900 <_dl_lookup_symbol_x+96>
0x000055555555e917 <+119>: mov %eax,%eax
0x000055555555e919 <+121>: mov %rax,-0xb0(%rbp)
0x000055555555e920 <+128>: pxor %xmm0,%xmm0
0x000055555555e924 <+132>: mov $0xffffffff,%eax
0x000055555555e929 <+137>: incq 0x21d048(%rip) # 0x55555577b978
<_rtld_local+2424>
0x000055555555e930 <+144>: test %r12,%r12
0x000055555555e933 <+147>: mov %rax,-0xa0(%rbp)
=> 0x000055555555e93a <+154>: movaps %xmm0,-0x90(%rbp)
0x000055555555e941 <+161>: je 0x55555555e950 <_dl_lookup_symbol_x+176>
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Subject: [Bug dynamic-link/19289] gcc-6 emits movaps instructions for dl-lookup.o with -O3
Date: Tue, 24 Nov 2015 22:01:00 -0000
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----------------------------------------------------------------------------
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
What is the contents of %rbp at the time of the crash? Can you show the output
of “info registers”?
As far as I understand it, MOVAPS is always available on x86_64, so if there is
a crash, it's probably a misaligned variable, and I'd like to confirm that.
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Subject: [Bug dynamic-link/19282] dl_load_write_lock isn't reinitialised during fork
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Subject: [Bug math/19266] strtod ("NAN(I)") incorrect in Turkish locales
Date: Tue, 24 Nov 2015 22:23:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a7f0c5ae4184916f0e145de3aefc794bf2e280ad
commit a7f0c5ae4184916f0e145de3aefc794bf2e280ad
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Nov 24 22:21:59 2015 +0000
Fix strtod ("NAN(I)") in Turkish locales (bug 19266).
The implementations of strtod and related functions use
locale-specific conversions to lower case when parsing the contents of
a string NAN(n-char-sequence_opt). This has the consequence that
NAN(I) is not treated as being of that form (only the initial NAN part
is accepted). The syntax of n-char-sequence directly maps to the
ASCII letters, digits and underscore as in identifiers, so it is
unambiguous that all ASCII letters must be accepted in all locales.
This patch, relative to a tree with
<https://sourceware.org/ml/libc-alpha/2015-11/msg00258.html> (pending
review) applied and depending on that patch, fixes this problem by
checking directly for ASCII letters. This will have the side effect
of no longer accepting 'İ' (dotted 'I') inside NAN() in Turkish
locales, which seems appropriate (that letter wouldn't have been
interpreted as having any meaning in the NaN payload anyway, as not
acceptable to strtoull).
Tested for x86_64 and x86.
[BZ #19266]
* stdlib/strtod_l.c (____STRTOF_INTERNAL): Check directly for
upper case and lower case letters inside NAN(), not using TOLOWER.
* stdlib/tst-strtod-nan-locale-main.c: New file.
* stdlib/tst-strtod-nan-locale.c: Likewise.
* stdlib/Makefile (tests): Add tst-strtod-nan-locale.
[$(run-built-tests) = yes] ($(objpfx)tst-strtod-nan-locale.out):
Depend on $(gen-locales).
($(objpfx)tst-strtod-nan-locale): Depend on $(libm).
* wcsmbs/tst-wcstod-nan-locale.c: New file.
* wcsmbs/Makefile (tests): Add tst-wcstod-nan-locale.
[$(run-built-tests) = yes] ($(objpfx)tst-wcstod-nan-locale.out):
Depend on $(gen-locales).
($(objpfx)tst-wcstod-nan-locale): Depend on $(libm).
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 17 +++++++
stdlib/Makefile | 4 +-
stdlib/strtod_l.c | 4 +-
stdlib/tst-strtod-nan-locale-main.c | 89 +++++++++++++++++++++++++++++++++++
stdlib/tst-strtod-nan-locale.c | 25 ++++++++++
wcsmbs/Makefile | 5 ++-
wcsmbs/tst-wcstod-nan-locale.c | 25 ++++++++++
7 files changed, 165 insertions(+), 4 deletions(-)
create mode 100644 stdlib/tst-strtod-nan-locale-main.c
create mode 100644 stdlib/tst-strtod-nan-locale.c
create mode 100644 wcsmbs/tst-wcstod-nan-locale.c
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19289] gcc-6 emits movaps instructions for dl-lookup.o with -O3
Date: Tue, 24 Nov 2015 22:25:00 -0000
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--- Comment #3 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
rax 0xffffffff 4294967295
rbx 0x7ffff763c360 140737343898464
rcx 0x7ffff75cb3d7 140737343435735
rdx 0x0 0
rsi 0x33f9b936d4fb49a0 3745228210287888800
rdi 0x7ffff75cb3c5 140737343435717
rbp 0x7fffffffa148 0x7fffffffa148
rsp 0x7fffffffa058 0x7fffffffa058
r8 0x0 0
r9 0x1 1
r10 0x7ffff76494d0 140737343952080
r11 0x7ffff7620840 140737343785024
r12 0x0 0
r13 0x0 0
r14 0x7ffff76494d0 140737343952080
r15 0x7fffffffa170 140737488331120
rip 0x55555555e93a 0x55555555e93a <_dl_lookup_symbol_x+154>
eflags 0x10246 [ PF ZF IF RF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19266] strtod ("NAN(I)") incorrect in Turkish locales
Date: Tue, 24 Nov 2015 22:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19266
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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To: glibc-bugs@sourceware.org
Subject: [Bug math/16961] nan function incorrect handling of bad sequences
Date: Tue, 24 Nov 2015 22:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=16961
--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via e02cabecf0d025ec4f4ddee290bdf7aadb873bb3 (commit)
from a7f0c5ae4184916f0e145de3aefc794bf2e280ad (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e02cabecf0d025ec4f4ddee290bdf7aadb873bb3
commit e02cabecf0d025ec4f4ddee290bdf7aadb873bb3
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Nov 24 22:24:52 2015 +0000
Refactor strtod parsing of NaN payloads.
The nan* functions handle their string argument by constructing a
NAN(...) string on the stack as a VLA and passing it to strtod
functions.
This approach has problems discussed in bug 16961 and bug 16962: the
stack usage is unbounded, and it gives incorrect results in certain
cases where the argument is not a valid n-char-sequence.
The natural fix for both issues is to refactor the NaN payload parsing
out of strtod into a separate function that the nan* functions can
call directly, so that no temporary string needs constructing on the
stack at all. This patch does that refactoring in preparation for
fixing those bugs (but without actually using the new functions from
nan* - which will also require exporting them from libc at version
GLIBC_PRIVATE). This patch is not intended to change any user-visible
behavior, so no tests are added (fixes for the above bugs will of
course add tests for them).
This patch builds on my recent fixes for strtol and strtod issues in
Turkish locales. Given those fixes, the parsing of NaN payloads is
locale-independent; thus, the new functions do not need to take a
locale_t argument.
Tested for x86_64, x86, mips64 and powerpc.
* stdlib/strtod_nan.c: New file.
* stdlib/strtod_nan_double.h: Likewise.
* stdlib/strtod_nan_float.h: Likewise.
* stdlib/strtod_nan_main.c: Likewise.
* stdlib/strtod_nan_narrow.h: Likewise.
* stdlib/strtod_nan_wide.h: Likewise.
* stdlib/strtof_nan.c: Likewise.
* stdlib/strtold_nan.c: Likewise.
* sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h: Likewise.
* sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h: Likewise.
* sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h: Likewise.
* wcsmbs/wcstod_nan.c: Likewise.
* wcsmbs/wcstof_nan.c: Likewise.
* wcsmbs/wcstold_nan.c: Likewise.
* stdlib/Makefile (routines): Add strtof_nan, strtod_nan and
strtold_nan.
* wcsmbs/Makefile (routines): Add wcstod_nan, wcstold_nan and
wcstof_nan.
* include/stdlib.h (__strtof_nan): Declare and use
libc_hidden_proto.
(__strtod_nan): Likewise.
(__strtold_nan): Likewise.
(__wcstof_nan): Likewise.
(__wcstod_nan): Likewise.
(__wcstold_nan): Likewise.
* include/wchar.h (____wcstoull_l_internal): Declare.
* stdlib/strtod_l.c: Do not include <ieee754.h>.
(____strtoull_l_internal): Remove declaration.
(STRTOF_NAN): Define macro.
(SET_MANTISSA): Remove macro.
(STRTOULL): Likewise.
(____STRTOF_INTERNAL): Use STRTOF_NAN to parse NaN payload.
* stdlib/strtof_l.c (____strtoull_l_internal): Remove declaration.
(STRTOF_NAN): Define macro.
(SET_MANTISSA): Remove macro.
* sysdeps/ieee754/ldbl-128/strtold_l.c (STRTOF_NAN): Define macro.
(SET_MANTISSA): Remove macro.
* sysdeps/ieee754/ldbl-128ibm/strtold_l.c (STRTOF_NAN): Define
macro.
(SET_MANTISSA): Remove macro.
* sysdeps/ieee754/ldbl-64-128/strtold_l.c (STRTOF_NAN): Define
macro.
(SET_MANTISSA): Remove macro.
* sysdeps/ieee754/ldbl-96/strtold_l.c (STRTOF_NAN): Define macro.
(SET_MANTISSA): Remove macro.
* wcsmbs/wcstod_l.c (____wcstoull_l_internal): Remove declaration.
* wcsmbs/wcstof_l.c (____wcstoull_l_internal): Likewise.
* wcsmbs/wcstold_l.c (____wcstoull_l_internal): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 49 +++++++++++++++++
include/stdlib.h | 18 ++++++
include/wchar.h | 3 +
stdlib/Makefile | 1 +
stdlib/strtod_l.c | 48 +++-------------
stdlib/strtod_nan.c | 24 ++++++++
stdlib/strtod_nan_double.h | 30 ++++++++++
stdlib/strtod_nan_float.h | 29 ++++++++++
stdlib/strtod_nan_main.c | 63 ++++++++++++++++++++++
stdlib/strtod_nan_narrow.h | 22 ++++++++
stdlib/strtod_nan_wide.h | 22 ++++++++
stdlib/strtof_l.c | 11 +---
stdlib/strtof_nan.c | 24 ++++++++
stdlib/strtold_nan.c | 30 ++++++++++
sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h | 33 +++++++++++
sysdeps/ieee754/ldbl-128/strtold_l.c | 13 +----
sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h | 30 ++++++++++
sysdeps/ieee754/ldbl-128ibm/strtold_l.c | 10 +---
sysdeps/ieee754/ldbl-64-128/strtold_l.c | 13 +----
sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h | 30 ++++++++++
sysdeps/ieee754/ldbl-96/strtold_l.c | 10 +---
wcsmbs/Makefile | 1 +
wcsmbs/wcstod_l.c | 3 -
wcsmbs/wcstod_nan.c | 23 ++++++++
wcsmbs/wcstof_l.c | 3 -
wcsmbs/wcstof_nan.c | 23 ++++++++
wcsmbs/wcstold_l.c | 3 -
wcsmbs/wcstold_nan.c | 30 ++++++++++
28 files changed, 504 insertions(+), 95 deletions(-)
create mode 100644 stdlib/strtod_nan.c
create mode 100644 stdlib/strtod_nan_double.h
create mode 100644 stdlib/strtod_nan_float.h
create mode 100644 stdlib/strtod_nan_main.c
create mode 100644 stdlib/strtod_nan_narrow.h
create mode 100644 stdlib/strtod_nan_wide.h
create mode 100644 stdlib/strtof_nan.c
create mode 100644 stdlib/strtold_nan.c
create mode 100644 sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h
create mode 100644 sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h
create mode 100644 sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h
create mode 100644 wcsmbs/wcstod_nan.c
create mode 100644 wcsmbs/wcstof_nan.c
create mode 100644 wcsmbs/wcstold_nan.c
--
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/16962] nan function unbounded stack allocation
Date: Tue, 24 Nov 2015 22:26:00 -0000
X-Bugzilla-Reason: CC
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https://sourceware.org/bugzilla/show_bug.cgi?id=16962
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via e02cabecf0d025ec4f4ddee290bdf7aadb873bb3 (commit)
from a7f0c5ae4184916f0e145de3aefc794bf2e280ad (commit)
Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e02cabecf0d025ec4f4ddee290bdf7aadb873bb3
commit e02cabecf0d025ec4f4ddee290bdf7aadb873bb3
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Nov 24 22:24:52 2015 +0000
Refactor strtod parsing of NaN payloads.
The nan* functions handle their string argument by constructing a
NAN(...) string on the stack as a VLA and passing it to strtod
functions.
This approach has problems discussed in bug 16961 and bug 16962: the
stack usage is unbounded, and it gives incorrect results in certain
cases where the argument is not a valid n-char-sequence.
The natural fix for both issues is to refactor the NaN payload parsing
out of strtod into a separate function that the nan* functions can
call directly, so that no temporary string needs constructing on the
stack at all. This patch does that refactoring in preparation for
fixing those bugs (but without actually using the new functions from
nan* - which will also require exporting them from libc at version
GLIBC_PRIVATE). This patch is not intended to change any user-visible
behavior, so no tests are added (fixes for the above bugs will of
course add tests for them).
This patch builds on my recent fixes for strtol and strtod issues in
Turkish locales. Given those fixes, the parsing of NaN payloads is
locale-independent; thus, the new functions do not need to take a
locale_t argument.
Tested for x86_64, x86, mips64 and powerpc.
* stdlib/strtod_nan.c: New file.
* stdlib/strtod_nan_double.h: Likewise.
* stdlib/strtod_nan_float.h: Likewise.
* stdlib/strtod_nan_main.c: Likewise.
* stdlib/strtod_nan_narrow.h: Likewise.
* stdlib/strtod_nan_wide.h: Likewise.
* stdlib/strtof_nan.c: Likewise.
* stdlib/strtold_nan.c: Likewise.
* sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h: Likewise.
* sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h: Likewise.
* sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h: Likewise.
* wcsmbs/wcstod_nan.c: Likewise.
* wcsmbs/wcstof_nan.c: Likewise.
* wcsmbs/wcstold_nan.c: Likewise.
* stdlib/Makefile (routines): Add strtof_nan, strtod_nan and
strtold_nan.
* wcsmbs/Makefile (routines): Add wcstod_nan, wcstold_nan and
wcstof_nan.
* include/stdlib.h (__strtof_nan): Declare and use
libc_hidden_proto.
(__strtod_nan): Likewise.
(__strtold_nan): Likewise.
(__wcstof_nan): Likewise.
(__wcstod_nan): Likewise.
(__wcstold_nan): Likewise.
* include/wchar.h (____wcstoull_l_internal): Declare.
* stdlib/strtod_l.c: Do not include <ieee754.h>.
(____strtoull_l_internal): Remove declaration.
(STRTOF_NAN): Define macro.
(SET_MANTISSA): Remove macro.
(STRTOULL): Likewise.
(____STRTOF_INTERNAL): Use STRTOF_NAN to parse NaN payload.
* stdlib/strtof_l.c (____strtoull_l_internal): Remove declaration.
(STRTOF_NAN): Define macro.
(SET_MANTISSA): Remove macro.
* sysdeps/ieee754/ldbl-128/strtold_l.c (STRTOF_NAN): Define macro.
(SET_MANTISSA): Remove macro.
* sysdeps/ieee754/ldbl-128ibm/strtold_l.c (STRTOF_NAN): Define
macro.
(SET_MANTISSA): Remove macro.
* sysdeps/ieee754/ldbl-64-128/strtold_l.c (STRTOF_NAN): Define
macro.
(SET_MANTISSA): Remove macro.
* sysdeps/ieee754/ldbl-96/strtold_l.c (STRTOF_NAN): Define macro.
(SET_MANTISSA): Remove macro.
* wcsmbs/wcstod_l.c (____wcstoull_l_internal): Remove declaration.
* wcsmbs/wcstof_l.c (____wcstoull_l_internal): Likewise.
* wcsmbs/wcstold_l.c (____wcstoull_l_internal): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 49 +++++++++++++++++
include/stdlib.h | 18 ++++++
include/wchar.h | 3 +
stdlib/Makefile | 1 +
stdlib/strtod_l.c | 48 +++-------------
stdlib/strtod_nan.c | 24 ++++++++
stdlib/strtod_nan_double.h | 30 ++++++++++
stdlib/strtod_nan_float.h | 29 ++++++++++
stdlib/strtod_nan_main.c | 63 ++++++++++++++++++++++
stdlib/strtod_nan_narrow.h | 22 ++++++++
stdlib/strtod_nan_wide.h | 22 ++++++++
stdlib/strtof_l.c | 11 +---
stdlib/strtof_nan.c | 24 ++++++++
stdlib/strtold_nan.c | 30 ++++++++++
sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h | 33 +++++++++++
sysdeps/ieee754/ldbl-128/strtold_l.c | 13 +----
sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h | 30 ++++++++++
sysdeps/ieee754/ldbl-128ibm/strtold_l.c | 10 +---
sysdeps/ieee754/ldbl-64-128/strtold_l.c | 13 +----
sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h | 30 ++++++++++
sysdeps/ieee754/ldbl-96/strtold_l.c | 10 +---
wcsmbs/Makefile | 1 +
wcsmbs/wcstod_l.c | 3 -
wcsmbs/wcstod_nan.c | 23 ++++++++
wcsmbs/wcstof_l.c | 3 -
wcsmbs/wcstof_nan.c | 23 ++++++++
wcsmbs/wcstold_l.c | 3 -
wcsmbs/wcstold_nan.c | 30 ++++++++++
28 files changed, 504 insertions(+), 95 deletions(-)
create mode 100644 stdlib/strtod_nan.c
create mode 100644 stdlib/strtod_nan_double.h
create mode 100644 stdlib/strtod_nan_float.h
create mode 100644 stdlib/strtod_nan_main.c
create mode 100644 stdlib/strtod_nan_narrow.h
create mode 100644 stdlib/strtod_nan_wide.h
create mode 100644 stdlib/strtof_nan.c
create mode 100644 stdlib/strtold_nan.c
create mode 100644 sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h
create mode 100644 sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h
create mode 100644 sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h
create mode 100644 wcsmbs/wcstod_nan.c
create mode 100644 wcsmbs/wcstof_nan.c
create mode 100644 wcsmbs/wcstold_nan.c
--
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>From glibc-bugs-return-30591-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 24 22:43:59 2015
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From: "markus at trippelsdorf dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19289] gcc-6 emits movaps instructions for dl-lookup.o with -O3
Date: Tue, 24 Nov 2015 22:43:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19289
--- Comment #4 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
Comparison left with __attribute__ ((__target__ ("no-mmx,no-sse")))
right without (segfaulting).
add %rsi,%rax | add %rsi,%rax
add %rdx,%rax | add %rdx,%rax
movzbl (%rcx),%edx | movzbl (%rcx),%edx
test %dl,%dl | test %dl,%dl
jne da0 <_dl_lookup_symbol_x+0x60> | jne da0
<_dl_lookup_symbol_x+0x60>
mov %eax,%ebx | mov %eax,%ebx
mov $0xffffffff,%eax | pxor %xmm0,%xmm0
test %r13,%r13 | mov $0xffffffff,%eax
movq $0x0,-0x80(%rbp) | test %r13,%r13
| mov %rax,-0x88(%rbp)
mov %rax,-0x88(%rbp) | movaps %xmm0,-0x80(%rbp)
movq $0x0,-0x78(%rbp) | je ddf
<_dl_lookup_symbol_x+0x9f>
| testl $0xfffffffa,0x10(%rbp)
je de7 <_dl_lookup_symbol_x+0xa7> | jne 18e4
<_dl_lookup_symbol_x+0xba4>
testl $0xfffffffa,0x10(%rbp) | mov -0xb8(%rbp),%rax
jne 196c <_dl_lookup_symbol_x+0xc2c> | test %r14,%r14
mov -0xb8(%rbp),%rax | mov (%rax),%r9
test %r14,%r14 | jne 1000
<_dl_lookup_symbol_x+0x2c0>
mov (%rax),%r9 | test %r9,%r9
jne 1040 <_dl_lookup_symbol_x+0x300> | movq $0x0,-0xc0(%rbp)
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>From glibc-bugs-return-30592-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 25 11:44:40 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19289] gcc-6 emits movaps instructions for dl-lookup.o with -O3
Date: Wed, 25 Nov 2015 11:44:00 -0000
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Markus Trippelsdorf <markus at trippelsdorf dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=68537
--- Comment #5 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
I've opened https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68537
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>From glibc-bugs-return-30593-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 25 12:03:22 2015
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Subject: [Bug libc/19292] New: Improve __assert_fail debuggability
Date: Wed, 25 Nov 2015 12:03:00 -0000
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Bug ID: 19292
Summary: Improve __assert_fail debuggability
Product: glibc
Version: unspecified
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Severity: enhancement
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
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CC: drepper.fsp at gmail dot com
Target Milestone: ---
Often when one is debugging an assert(), the variables in the frame that
triggered the assertion failure are marked as "optimized out" by the debugger.
Often this is because the asnprintf() call in __assert_fail() clobbered the
registers they were held in, and so the debugger cannot recover their values.
This can easily be fixed by having __assert_fail() save all registers on its
own stack frame, with an appropriate DWARF annotation, so that the debugger can
inspect the variables' values.
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>From glibc-bugs-return-30594-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 25 12:08:00 2015
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Subject: [Bug dynamic-link/19289] gcc-6 emits movaps instructions for dl-lookup.o with -O3
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=68537
Resolution|--- |MOVED
--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
Moved to GCC Bugzilla.
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>From glibc-bugs-return-30595-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 26 23:11:59 2015
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
Date: Thu, 26 Nov 2015 23:11:00 -0000
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--- Comment #11 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
OK, sent: https://sourceware.org/ml/libc-alpha/2015-11/msg00594.html
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>From glibc-bugs-return-30596-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 27 13:26:45 2015
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Subject: [Bug math/19058] [x86_64] Link fail with -fopenmp and -flto
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=977a30801f61b7bbc27e8f185c1e7eb49675c60c
commit 977a30801f61b7bbc27e8f185c1e7eb49675c60c
Author: Andrew Senkevich <andrew.senkevich@intel.com>
Date: Fri Nov 27 16:22:26 2015 +0300
Better workaround for aliases of *_finite symbols in vector math library.
Old workaround based on assembly aliases can lead to link fail (bug 19058).
This patch makes workaround in another way to avoid it.
[BZ #19058]
* math/Makefile ($(inst_libdir)/libm.so): Added libmvec_nonshared.a
to AS_NEEDED.
* sysdeps/x86/fpu/bits/math-vector.h: Removed code with old workaround.
* sysdeps/x86_64/fpu/Makefile (libmvec-support,
libmvec-static-only-routines): Added new file.
* sysdeps/x86_64/fpu/svml_finite_alias.S: New file.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 11 ++++++
math/Makefile | 2 +-
sysdeps/x86/fpu/bits/math-vector.h | 29 ---------------
sysdeps/x86_64/fpu/Makefile | 4 ++-
sysdeps/x86_64/fpu/svml_finite_alias.S | 59 ++++++++++++++++++++++++++++++++
5 files changed, 74 insertions(+), 31 deletions(-)
create mode 100644 sysdeps/x86_64/fpu/svml_finite_alias.S
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>From glibc-bugs-return-30597-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 27 13:30:15 2015
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Subject: [Bug math/19058] [x86_64] Link fail with -fopenmp and -flto
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Andrew Senkevich <andrew.n.senkevich at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
Fixed
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>From glibc-bugs-return-30598-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 27 14:38:13 2015
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Subject: [Bug math/19058] [x86_64] Link fail with -fopenmp and -flto
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commit 060f8dbd0ca6eb17d20442dc4df72c2a707bdf86
Author: Andrew Senkevich <andrew.senkevich@intel.com>
Date: Fri Nov 27 17:30:04 2015 +0300
Better workaround for aliases of *_finite symbols in vector math library.
Old workaround based on assembly aliases can lead to link fail (bug 19058).
This patch makes workaround in another way to avoid it.
[BZ #19058]
* math/Makefile ($(inst_libdir)/libm.so): Added libmvec_nonshared.a
to AS_NEEDED.
* sysdeps/x86/fpu/bits/math-vector.h: Removed code with old workaround.
* sysdeps/x86_64/fpu/Makefile (libmvec-support,
libmvec-static-only-routines): Added new file.
* sysdeps/x86_64/fpu/svml_finite_alias.S: New file.
* NEWS: Mention this fix.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 12 ++++++
NEWS | 2 +-
math/Makefile | 2 +-
sysdeps/x86/fpu/bits/math-vector.h | 29 ---------------
sysdeps/x86_64/fpu/Makefile | 5 ++-
sysdeps/x86_64/fpu/svml_finite_alias.S | 59 ++++++++++++++++++++++++++++++++
6 files changed, 77 insertions(+), 32 deletions(-)
create mode 100644 sysdeps/x86_64/fpu/svml_finite_alias.S
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/14259] --localedir arg to configure is ignored
Date: Fri, 27 Nov 2015 15:21:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=14259
--- Comment #12 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Carlos O'Donell from comment #11)
> As discussed on libc-alpha:
> https://sourceware.org/ml/libc-alpha/2015-10/msg00684.html
>
> The --localedir option needs fixing, and a new option created for locale
> archive.
Renamed internal localedir uses to complocaledir to prepare the way for a fix
here.
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>From glibc-bugs-return-30600-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 27 15:23:32 2015
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/14259] --localedir arg to configure is ignored
Date: Fri, 27 Nov 2015 15:23:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=14259
--- Comment #13 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 90fe682d3067163aa773feecf497ef599429457a (commit)
from 977a30801f61b7bbc27e8f185c1e7eb49675c60c (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=90fe682d3067163aa773feecf497ef599429457a
commit 90fe682d3067163aa773feecf497ef599429457a
Author: Carlos O'Donell <carlos@systemhalted.org>
Date: Fri Nov 27 10:09:45 2015 -0500
Rename localedir to complocaledir (bug 14259).
In preparation to fix the --localedir configure argument we must
move the existing conflicting definition of localedir to a more
appropriate name. Given that all current internal uses of localedir
relate to the compiled locales we rename to complocaledir.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 27 ++++++++++++++++++++
Makeconfig | 9 +++---
aclocal.m4 | 2 +-
config.make.in | 2 +-
configure | 2 +-
configure.ac | 2 +-
locale/Makefile | 7 +++-
locale/findlocale.c | 2 +-
locale/loadarchive.c | 2 +-
locale/programs/locale.c | 20 +++++++++-----
locale/programs/localedef.c | 6 ++--
locale/programs/locarchive.c | 2 +-
localedata/Makefile | 2 +-
sysdeps/gnu/configure | 2 +-
sysdeps/unix/sysv/linux/aarch64/configure | 2 +-
sysdeps/unix/sysv/linux/mips/configure | 4 +-
.../unix/sysv/linux/powerpc/powerpc64/configure | 2 +-
sysdeps/unix/sysv/linux/s390/s390-64/configure | 2 +-
sysdeps/unix/sysv/linux/sparc/sparc64/configure | 2 +-
sysdeps/unix/sysv/linux/x86_64/64/configure | 2 +-
sysdeps/unix/sysv/linux/x86_64/x32/configure | 2 +-
21 files changed, 70 insertions(+), 33 deletions(-)
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>From glibc-bugs-return-30601-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 27 18:22:46 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19058] [x86_64] Link fail with -fopenmp and -flto
Date: Fri, 27 Nov 2015 18:22:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19058
--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
When marking fixed a bug that was user-visible in a release, you need to
set the milestone to point to the first mainline release with the fix
(2.23 in this case).
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>From glibc-bugs-return-30602-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 28 20:20:05 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug network/14413] nsswitch doesn't implement getaddrinfo(), plugins cannot provide full getaddrinfo features
Date: Sat, 28 Nov 2015 20:20:00 -0000
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Kevin Cox <kevincox at kevincox dot ca> changed:
What |Removed |Added
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CC| |kevincox at kevincox dot ca
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>From glibc-bugs-return-30603-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 29 19:29:01 2015
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From: "aurelien at aurel32 dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19303] New: nptl/tst-cancel24-static fails on arm, mips and hppa
Date: Sun, 29 Nov 2015 19:29:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19303
Bug ID: 19303
Summary: nptl/tst-cancel24-static fails on arm, mips and hppa
Product: glibc
Version: 2.23
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: aurelien at aurel32 dot net
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Starting with version 2.22, the test nptl/tst-cancel24-static fails on at
least: arm-linux-gnueabi, arm-linux-gnueabihf, hppa-linux-gnu, mips-linux-gnu
and mipsel-linux-gnu. However it doesn't *seem* to fail on aarch64-linux-gnu,
i586-linux-gnu, mips64el-linux-gnu, powerpc-linux-gnu, powerpc64le-linux-gnu,
s390x-linux-gnu, x86_64-linux-gnu. I said "seem" because I have seen at least
one run (over a few dozens) where the test didn't fail on arm-linux-gnueabihf.
I have been able to track down this regression to the following commit:
commit f8aeae347377f3dfa8cbadde057adf1827fb1d44
Author: Alexandre Oliva <aoliva@redhat.com>
Date: Tue Mar 17 01:14:11 2015 -0300
Fix DTV race, assert, DTV_SURPLUS Static TLS limit, and nptl_db garbage
The problem is still reproducible on master, and reverting this commit still
fixes the issue. The backtrace shows that the issue happens in
__cxa_begin_catch:
#0 0x00017fbc in __cxa_begin_catch ()
#1 0x00010b34 in tf (arg=<optimized out>) at tst-cancel24-static.cc:37
#2 0x0001206c in start_thread (arg=0xb6ffe300) at pthread_create.c:335
#3 0x0003bd7c in ?? () at ../sysdeps/unix/sysv/linux/arm/clone.S:89
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
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>From glibc-bugs-return-30604-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 30 05:01:14 2015
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From: "pub at craig dot mcqueen.id.au" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/16826] getaddrinfo() doesn't get scope ID for IPv6-only look-ups
Date: Mon, 30 Nov 2015 05:01:00 -0000
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--- Comment #3 from Craig McQueen <pub at craig dot mcqueen.id.au> ---
Any updates on this?
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>From glibc-bugs-return-30605-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 30 06:20:31 2015
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From: "fabian at greffrath dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19305] New: qsort() should return early if (nmemb <= 1)
Date: Mon, 30 Nov 2015 06:20:00 -0000
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Bug ID: 19305
Summary: qsort() should return early if (nmemb <= 1)
Product: glibc
Version: unspecified
Status: NEW
Severity: minor
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: fabian at greffrath dot com
CC: drepper.fsp at gmail dot com
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Hi there,
it doesn't make sense to call qsort() on an array that only contains 1 or 0
elements. There are some checks for small n, s and n*s in __qsort_r, but none
covers the trivial cases -- memory is always allocated.
Thus, I'd like to suggest to add the following trivial change to
stdlib/msort.c:308:
void
qsort (void *b, size_t n, size_t s, __compar_fn_t cmp)
{
if (n > 1)
return __qsort_r (b, n, s, (__compar_d_fn_t) cmp, NULL);
}
Thanks,
Fabian
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>From glibc-bugs-return-30606-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 30 10:35:18 2015
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From: "andrew.n.senkevich at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19058] [x86_64] Link fail with -fopenmp and -flto
Date: Mon, 30 Nov 2015 10:35:00 -0000
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Andrew Senkevich <andrew.n.senkevich at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|2.22 |2.23
--- Comment #6 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
(In reply to joseph@codesourcery.com from comment #5)
> When marking fixed a bug that was user-visible in a release, you need to
> set the milestone to point to the first mainline release with the fix
> (2.23 in this case).
It is exactly what I was thinking about.
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>From glibc-bugs-return-30607-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 30 17:03:51 2015
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Subject: [Bug libc/19214] Family and model identification for AMD CPU's are incorrect.
Date: Mon, 30 Nov 2015 17:03:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9627da32ec76600244e7723e99b9d4e27691f1ff
commit 9627da32ec76600244e7723e99b9d4e27691f1ff
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Nov 30 08:53:37 2015 -0800
Update family and model detection for AMD CPUs
AMD CPUs uses the similar encoding scheme for extended family and model
as Intel CPUs as shown in:
http://support.amd.com/TechDocs/25481.pdf
This patch updates get_common_indeces to get family and model for both
Intel and AMD CPUs when family == 0x0f.
[BZ #19214]
* sysdeps/x86/cpu-features.c (get_common_indeces): Add an
argument to return extended model. Update family and model
with extended family and model when family == 0x0f.
(init_cpu_features): Updated.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 ++++++++
sysdeps/x86/cpu-features.c | 27 +++++++++++++++------------
2 files changed, 23 insertions(+), 12 deletions(-)
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>From glibc-bugs-return-30608-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 30 18:38:03 2015
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Subject: [Bug math/19058] [x86_64] Link fail with -fopenmp and -flto
Date: Mon, 30 Nov 2015 18:38:00 -0000
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--- Comment #7 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Mon, 30 Nov 2015, andrew.n.senkevich at gmail dot com wrote:
> (In reply to joseph@codesourcery.com from comment #5)
> > When marking fixed a bug that was user-visible in a release, you need to
> > set the milestone to point to the first mainline release with the fix
> > (2.23 in this case).
>
> It is exactly what I was thinking about.
You need to set "Target Milestone", not "Version".
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>From glibc-bugs-return-30609-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 30 18:38:35 2015
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Subject: [Bug libc/19214] Family and model identification for AMD CPU's are incorrect.
Date: Mon, 30 Nov 2015 18:38:00 -0000
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--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
If this bug is fixed, please resolve it as such and set the target
milestone to 2.23.
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>From glibc-bugs-return-30610-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 30 18:41:43 2015
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Subject: [Bug nptl/19313] New: Wrong __cpu_mask for x32
Date: Mon, 30 Nov 2015 18:41:00 -0000
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Bug ID: 19313
Summary: Wrong __cpu_mask for x32
Product: glibc
Version: 2.23
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Since x86-64 and x32 use the same set of sched_XXX system call interface:
[hjl@gnu-6 linux-stable]$ grep sched_ arch/x86/entry/syscalls/syscall_64.tbl
24 common sched_yield sys_sched_yield
142 common sched_setparam sys_sched_setparam
143 common sched_getparam sys_sched_getparam
144 common sched_setscheduler sys_sched_setscheduler
145 common sched_getscheduler sys_sched_getscheduler
146 common sched_get_priority_max sys_sched_get_priority_max
147 common sched_get_priority_min sys_sched_get_priority_min
148 common sched_rr_get_interval sys_sched_rr_get_interval
203 common sched_setaffinity sys_sched_setaffinity
204 common sched_getaffinity sys_sched_getaffinity
314 common sched_setattr sys_sched_setattr
315 common sched_getattr sys_sched_getattr
[hjl@gnu-6 linux-stable]$
__cpu_mask should be __syscall_ulong_t for x86-64 and x32. Using
typedef unsigned long int __cpu_mask;
leads to
FAIL: nptl/tst-thread-affinity-pthread
FAIL: nptl/tst-thread-affinity-pthread2
FAIL: nptl/tst-thread-affinity-sched
FAIL: posix/tst-affinity
FAIL: posix/tst-affinity-pid
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>From glibc-bugs-return-30611-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 01 04:21:25 2015
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Subject: [Bug libc/19214] Family and model identification for AMD CPU's are incorrect.
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Amit Pawar <amit.pawar at amd dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #3 from Amit Pawar <amit.pawar at amd dot com> ---
Fixed
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Subject: [Bug math/19058] [x86_64] Link fail with -fopenmp and -flto
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Andrew Senkevich <andrew.n.senkevich at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |2.23
--- Comment #8 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
Target Milestone = 2.23
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Subject: [Bug network/16826] getaddrinfo() doesn't get scope ID for IPv6-only look-ups
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
CC| |carlos at redhat dot com
--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Craig McQueen from comment #3)
> Any updates on this?
For most core library issues it isn't that information is missing, but that a
motivated developer needs to step up to help with the work. There is no one
working on this issue that I know of (note the issue is not yet assigned).
Someone would have to look at bug 14505 and reconcile why the change was made.
Simply reverting the change is insufficient since it would regress bug 14505.
After an analysis of both bugs is made a subsequent fix needs to be decided and
posted to libc-alpha following the contribution checklist:
https://sourceware.org/glibc/wiki/Contribution%20checklist
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Subject: [Bug nptl/19303] nptl/tst-cancel24-static fails on arm, mips and hppa
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
CC| |carlos at redhat dot com
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
While this bug worries me, what is likely happening is bad interaction between
static/dlopen. For cancellation we must dlopen libgcc.so, and there are lots of
problems presently in glibc with static/dlopen use cases. Someone would have to
debug this deeper to see what's going wrong in the test case.
There could be a race condition in the changes Alex made, but reverting them is
not the right answer because it introduces a series of other problems which the
patches solved.
A developer needs to step in to debug this thoroughly to determine what's
wrong.
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Subject: [Bug nptl/19313] Wrong __cpu_mask for x32
Date: Tue, 01 Dec 2015 18:27:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 7635a88d320c665defd44085d3b9031d673fe1ee (commit)
from c960ded0d552ee20ea4688a5442dd75440355886 (commit)
Those revisions listed above that are new to this repository have
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=7635a88d320c665defd44085d3b9031d673fe1ee
commit 7635a88d320c665defd44085d3b9031d673fe1ee
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Dec 1 10:25:44 2015 -0800
Add __CPU_MASK_TYPE for __cpu_mask
Since x86-64 and x32 use the same set of sched_XXX system call interface:
[hjl@gnu-6 linux-stable]$ grep sched_
arch/x86/entry/syscalls/syscall_64.tbl
24 common sched_yield sys_sched_yield
142 common sched_setparam sys_sched_setparam
143 common sched_getparam sys_sched_getparam
144 common sched_setscheduler sys_sched_setscheduler
145 common sched_getscheduler sys_sched_getscheduler
146 common sched_get_priority_max sys_sched_get_priority_max
147 common sched_get_priority_min sys_sched_get_priority_min
148 common sched_rr_get_interval sys_sched_rr_get_interval
203 common sched_setaffinity sys_sched_setaffinity
204 common sched_getaffinity sys_sched_getaffinity
314 common sched_setattr sys_sched_setattr
315 common sched_getattr sys_sched_getattr
[hjl@gnu-6 linux-stable]$
__cpu_mask should be unsigned long long, instead of unsigned long, for
x32. This patch adds __CPU_MASK_TYPE so that each architecture can
define the proper type for __cpu_mask.
[BZ #19313]
* bits/typesizes.h (__CPU_MASK_TYPE): New.
* sysdeps/mach/hurd/bits/typesizes.h (__CPU_MASK_TYPE): Likewise.
* sysdeps/nacl/bits/typesizes.h (__CPU_MASK_TYPE): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/typesizes.h (__CPU_MASK_TYPE):
Likewise.
* sysdeps/unix/sysv/linux/generic/bits/typesizes.h (__CPU_MASK_TYPE):
Likewise.
* sysdeps/unix/sysv/linux/s390/bits/typesizes.h (__CPU_MASK_TYPE):
Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/typesizes.h (__CPU_MASK_TYPE):
Likewise.
* sysdeps/unix/sysv/linux/x86/bits/typesizes.h (__CPU_MASK_TYPE):
* sysdeps/unix/sysv/linux/bits/sched.h (__cpu_mask): Replace
unsigned long int with __CPU_MASK_TYPE.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 18 ++++++++++++++++++
bits/typesizes.h | 1 +
sysdeps/mach/hurd/bits/typesizes.h | 1 +
sysdeps/nacl/bits/typesizes.h | 1 +
sysdeps/unix/sysv/linux/alpha/bits/typesizes.h | 1 +
sysdeps/unix/sysv/linux/bits/sched.h | 2 +-
sysdeps/unix/sysv/linux/generic/bits/typesizes.h | 1 +
sysdeps/unix/sysv/linux/s390/bits/typesizes.h | 1 +
sysdeps/unix/sysv/linux/sparc/bits/typesizes.h | 1 +
sysdeps/unix/sysv/linux/x86/bits/typesizes.h | 1 +
10 files changed, 27 insertions(+), 1 deletions(-)
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>From glibc-bugs-return-30615-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 01 18:27:14 2015
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Subject: [Bug nptl/19313] Wrong __cpu_mask for x32
Date: Tue, 01 Dec 2015 18:27:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
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>From glibc-bugs-return-30617-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 01 21:42:56 2015
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Subject: [Bug locale/17197] Redundant shift character in iconv conversion output at block boundary
Date: Tue, 01 Dec 2015 21:42:00 -0000
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Martin Sebor <msebor at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at redhat dot com
--- Comment #1 from Martin Sebor <msebor at redhat dot com> ---
I see patches for this bug in the archives (e.g.,
https://sourceware.org/ml/libc-alpha/2014-07/msg00491.html) but it doesn't look
like any of them has been committed. Are you still planning to commit one of
them or is a there some problem?
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>From glibc-bugs-return-30618-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 02 00:55:57 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug locale/17197] Redundant shift character in iconv conversion output at block boundary
Date: Wed, 02 Dec 2015 00:55:00 -0000
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--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Patches should be pinged weekly; see the contribution checklist. This is
especially true for patches from established contributors; patchwork can
be used to find unreviewed patches, but it requires a significant amount
of work to keep cleaning up state for patches that are superseded or
committed (if we get automatic ChangeLog generation conventions together
with automatic marking as committed of patches with git-patch-id matching
a commit to master, that would help a bit), and is most likely to be
useful for finding patches from occasional contributors who may not
remember to keep pinging.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/17204] race condition in nice
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |SUSPENDED
CC| |carlos at redhat dot com
Severity|normal |enhancement
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Andreas Schwab from comment #1)
> It is impossible in general to know the correct return value without calling
> getpriority.
Agreed. At best this bug is an RFC "reduce number of syscalls made in nice()
implementation."
(In reply to Steven Stewart-Gallus from comment #0)
> nice is implemented as calling getpriority and than setting the priority as
> higher and than calling getpriority again but this is racy as other tasks
> can call setpriority concurrently. This bug probably doesn't actually cause
> any problems but it could still be fixed. Fixing this bug would also reduce
> the amount of system calls by one which would be nice. Glibc should not call
> getpriority to get the new value of the priority after.
Agreed. There is a race. To fix the race would require a new kernel syscall or
some kind of userspace lock to make the priority accesses atomic. I expect the
only real solution is a `nice` syscall that does everything in one access
exclusively for the current process. Given that this is really a kernel issue
you could file two bugs, one for the kernel to implement `nice` and another for
glibc to use `nice`, but you'll have to lobby both groups to get the feature
you want and that will be difficult.
Moving to SUSPENDED until the kernel has a `nice` syscall which solves both the
race condition and reduces the implementation from 3 syscalls down to 1.
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>From glibc-bugs-return-30620-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 03 14:49:19 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug math/18915] libm.so is now a script and breaks backwards compat
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gastineau <amgastineau at yahoo dot fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
CC| |amgastineau at yahoo dot fr
Resolution|INVALID |---
--- Comment #8 from gastineau <amgastineau at yahoo dot fr> ---
Even if you assume that dlopen("libm.so", RTLD_LAZY); is now invalid.
The documentation of dlopen provides an example with this library.
So you have to correct the example in "man dlopen".
The examples, and the documentation, must match what developers are allowed to
do.
If you do not provide an accurate documentation, this documentation will be
useless for the developers and can be removed completely...
So I reopen the bug to have a corrected documentation.
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #9 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to gastineau from comment #8)
> Even if you assume that dlopen("libm.so", RTLD_LAZY); is now invalid.
>
> The documentation of dlopen provides an example with this library.
The manual pages come from a separate project. I have reported it there:
https://bugzilla.kernel.org/show_bug.cgi?id=108821
Let me repeat that if you present your use case, we might be able to provide
you with a solution.
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Subject: [Bug math/18915] libm.so is now a script and breaks backwards compat
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From: "nszabolcs at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19329] New: dl-tls.c assert failure at concurrent pthread_create and dlopen
Date: Fri, 04 Dec 2015 12:37:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19329
Bug ID: 19329
Summary: dl-tls.c assert failure at concurrent pthread_create
and dlopen
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: nszabolcs at gmail dot com
Target Milestone: ---
(this is a continuation of bug 17918, but it turns out to be a different
issue that was originally reported there.)
failure:
Inconsistency detected by ld.so: dl-tls.c: 493: _dl_allocate_tls_init:
Assertion `listp->slotinfo[cnt].gen <= _rtld_local._dl_tls_generation' failed!
caused by dlopen (in _dl_add_to_slotinfo and in dl_open_worker) doing
listp->slotinfo[idx].gen = GL(dl_tls_generation) + 1;
//...
if (any_tls && __builtin_expect (++GL(dl_tls_generation) == 0, 0))
while pthread_create (in _dl_allocate_tls_init) concurrently doing
assert (listp->slotinfo[cnt].gen <= GL(dl_tls_generation));
so
T1:
y = x + 1;
++x;
T2:
assert(y <= x);
this is hard to trigger as the race window is short compared to the time
dlopen and pthread_create takes, however if i add a usleep(1000) between
the two operations in T1, it is triggered all the time.
the slotinfo and tls generation update lack any sort of synchronization or
atomics in _dl_allocate_tls_init (dlopen holds GL(dl_load_lock)).
on x86_64 with added usleep:
(gdb) p _rtld_local._dl_tls_dtv_slotinfo_list->slotinfo[0]@64
$11 = {{gen = 0, map = 0x7ffff7ff94e8}, {gen = 1, map = 0x7ffff7ff94e8}, {gen =
2, map = 0x7ffff0000910}, {gen = 0, map = 0x0} <repeats 61 times>}
(gdb) p _rtld_local._dl_tls_generation
$12 = 1
T1:
#0 0x00007ffff7df2097 in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007ffff7df1f74 in usleep (useconds=<optimised out>) at
../sysdeps/posix/usleep.c:32
#2 0x00007ffff7decc6b in dl_open_worker (a=a@entry=0x7ffff7611c80) at
dl-open.c:527
#3 0x00007ffff7de8314 in _dl_catch_error
(objname=objname@entry=0x7ffff7611c70,
errstring=errstring@entry=0x7ffff7611c78,
mallocedp=mallocedp@entry=0x7ffff7611c6f,
operate=operate@entry=0x7ffff7dec720 <dl_open_worker>,
args=args@entry=0x7ffff7611c80) at dl-error.c:187
#4 0x00007ffff7dec2a9 in _dl_open (file=0x7ffff7611ee0 "mod-0.so",
mode=-2147483646, caller_dlopen=0x4007e2 <start+34>, nsid=-2, argc=<optimised
out>,
argv=<optimised out>, env=0x7fffffffe378) at dl-open.c:652
#5 0x00007ffff7bd5ee9 in dlopen_doit (a=a@entry=0x7ffff7611eb0) at dlopen.c:66
#6 0x00007ffff7de8314 in _dl_catch_error (objname=0x7ffff00008d0,
errstring=0x7ffff00008d8, mallocedp=0x7ffff00008c8, operate=0x7ffff7bd5e90
<dlopen_doit>,
args=0x7ffff7611eb0) at dl-error.c:187
#7 0x00007ffff7bd6521 in _dlerror_run (operate=operate@entry=0x7ffff7bd5e90
<dlopen_doit>, args=args@entry=0x7ffff7611eb0) at dlerror.c:163
#8 0x00007ffff7bd5f82 in __dlopen (file=file@entry=0x7ffff7611ee0 "mod-0.so",
mode=mode@entry=2) at dlopen.c:87
#9 0x00000000004007e2 in start (a=<optimised out>) at a.c:19
#10 0x00007ffff79bf3d4 in start_thread (arg=0x7ffff7612700) at
pthread_create.c:333
#11 0x00007ffff76feedd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
T2:
#0 __GI___assert_fail (assertion=0x7ffff7df8840 "listp->slotinfo[cnt].gen <=
GL(dl_tls_generation)", file=0x7ffff7df68e6 "dl-tls.c", line=493,
function=0x7ffff7df9020 <__PRETTY_FUNCTION__.9528> "_dl_allocate_tls_init")
at dl-minimal.c:220
#1 0x00007ffff7deb492 in __GI__dl_allocate_tls_init (result=0x7fffb7fff700) at
dl-tls.c:493
#2 0x00007ffff79bff67 in allocate_stack (stack=<synthetic pointer>,
pdp=<synthetic pointer>, attr=0x7fffffffdf90) at allocatestack.c:579
#3 __pthread_create_2_1 (newthread=newthread@entry=0x7fffffffe078,
attr=attr@entry=0x0, start_routine=start_routine@entry=0x4007c0 <start>,
arg=arg@entry=0xd)
at pthread_create.c:526
#4 0x000000000040062a in main () at a.c:34
i think
GL(dl_tls_generation)
GL(dl_tls_dtv_slotinfo_list)
listp->slotinfo[i].map
listp->slotinfo[i].gen
listp->next
may all be accessed concurrently by pthread_create and dlopen without
any synchronization.
this can also cause wrong maxgen computation into dtv[0].counter
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Subject: [Bug dynamic-link/17918] corrupt dtv causes segfault whith multithreaded dlopen/dlclose of shared objects with tls
Date: Fri, 04 Dec 2015 12:49:00 -0000
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Szabolcs Nagy <nszabolcs at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Szabolcs Nagy <nszabolcs at gmail dot com> ---
Fixed in
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f8aeae347377f3dfa8cbadde057adf1827fb1d44
the remaining issue is independent of the original
dtv corruption (and does not require dlclose) so
created bug 19329 for that.
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Subject: [Bug libc/17977] gethostbyname_r hangs forever
Date: Fri, 04 Dec 2015 18:12:00 -0000
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--- Comment #9 from Florian Weimer <fweimer at redhat dot com> ---
Test case improvement:
https://sourceware.org/git/?p=glibc.git;a=commit;h=731a713b72e1281d58b3304738f04efb7bfca8b7
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Subject: [Bug libc/17977] gethostbyname_r hangs forever
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--- Comment #10 from Florian Weimer <fweimer at redhat dot com> ---
Please disregard the previous comment.
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>From glibc-bugs-return-30627-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 04 19:29:39 2015
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From: "mtk.manpages at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/19144] daemon() fails to prevent reacquisition of controlling terminal
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--- Comment #2 from Michael Kerrisk <mtk.manpages at gmail dot com> ---
Hi FLorian,
(In reply to Florian Weimer from comment #1)
> How risky is adding the second fork? Would it otherwise change behavior?
Well:
* It would fix the bug that allows the caller to reacquire a controlling
terminal. It seems unlikely that any program would depend on that bug in order
to acquire a controlling tty.
* In a properly constructed System-V type daemon, the resulting process is
neither a session leader (which is the critical point) nor a process group
leader. This means (getpid() != getsid() && getpid() != getpgrp()). But with
the baemon(3) in glibc, the following is true for the resulting process:
(getpid() == getsid() && getpid() == getpgrp()). It seems rather unlikely that
any program would depend on this fact though.
> By the way, the manual daemon(3) manual page talks about the “calling
> process's current working directory”. I think this is misleading because
> the function exits the calling process before changing the current directory.
I changed "calling process's" to "processes".
Cheers,
Michael
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Subject: [Bug math/16961] nan function incorrect handling of bad sequences
Date: Fri, 04 Dec 2015 20:37:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8f5e8b01a1da2a207228f2072c934fa5918554b8
commit 8f5e8b01a1da2a207228f2072c934fa5918554b8
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Dec 4 20:36:28 2015 +0000
Fix nan functions handling of payload strings (bug 16961, bug 16962).
The nan, nanf and nanl functions handle payload strings by doing e.g.:
if (tagp[0] != '\0')
{
char buf[6 + strlen (tagp)];
sprintf (buf, "NAN(%s)", tagp);
return strtod (buf, NULL);
}
This is an unbounded stack allocation based on the length of the
argument. Furthermore, if the argument starts with an n-char-sequence
followed by ')', that n-char-sequence is wrongly treated as
significant for determining the payload of the resulting NaN, when ISO
C says the call should be equivalent to strtod ("NAN", NULL), without
being affected by that initial n-char-sequence. This patch fixes both
those problems by using the __strtod_nan etc. functions recently
factored out of strtod etc. for that purpose, with those functions
being exported from libc at version GLIBC_PRIVATE.
Tested for x86_64, x86, mips64 and powerpc.
[BZ #16961]
[BZ #16962]
* math/s_nan.c (__nan): Use __strtod_nan instead of constructing a
string on the stack for strtod.
* math/s_nanf.c (__nanf): Use __strtof_nan instead of constructing
a string on the stack for strtof.
* math/s_nanl.c (__nanl): Use __strtold_nan instead of
constructing a string on the stack for strtold.
* stdlib/Versions (libc): Add __strtof_nan, __strtod_nan and
__strtold_nan to GLIBC_PRIVATE.
* math/test-nan-overflow.c: New file.
* math/test-nan-payload.c: Likewise.
* math/Makefile (tests): Add test-nan-overflow and
test-nan-payload.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 17 ++++
NEWS | 6 ++
math/Makefile | 3 +-
math/s_nan.c | 9 +--
math/s_nanf.c | 9 +--
math/s_nanl.c | 9 +--
math/{test-powl.c => test-nan-overflow.c} | 59 +++++++++------
math/test-nan-payload.c | 122 +++++++++++++++++++++++++++++
stdlib/Versions | 1 +
9 files changed, 187 insertions(+), 48 deletions(-)
copy math/{test-powl.c => test-nan-overflow.c} (51%)
create mode 100644 math/test-nan-payload.c
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/16962] nan function unbounded stack allocation
Date: Fri, 04 Dec 2015 20:37:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8f5e8b01a1da2a207228f2072c934fa5918554b8
commit 8f5e8b01a1da2a207228f2072c934fa5918554b8
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Dec 4 20:36:28 2015 +0000
Fix nan functions handling of payload strings (bug 16961, bug 16962).
The nan, nanf and nanl functions handle payload strings by doing e.g.:
if (tagp[0] != '\0')
{
char buf[6 + strlen (tagp)];
sprintf (buf, "NAN(%s)", tagp);
return strtod (buf, NULL);
}
This is an unbounded stack allocation based on the length of the
argument. Furthermore, if the argument starts with an n-char-sequence
followed by ')', that n-char-sequence is wrongly treated as
significant for determining the payload of the resulting NaN, when ISO
C says the call should be equivalent to strtod ("NAN", NULL), without
being affected by that initial n-char-sequence. This patch fixes both
those problems by using the __strtod_nan etc. functions recently
factored out of strtod etc. for that purpose, with those functions
being exported from libc at version GLIBC_PRIVATE.
Tested for x86_64, x86, mips64 and powerpc.
[BZ #16961]
[BZ #16962]
* math/s_nan.c (__nan): Use __strtod_nan instead of constructing a
string on the stack for strtod.
* math/s_nanf.c (__nanf): Use __strtof_nan instead of constructing
a string on the stack for strtof.
* math/s_nanl.c (__nanl): Use __strtold_nan instead of
constructing a string on the stack for strtold.
* stdlib/Versions (libc): Add __strtof_nan, __strtod_nan and
__strtold_nan to GLIBC_PRIVATE.
* math/test-nan-overflow.c: New file.
* math/test-nan-payload.c: Likewise.
* math/Makefile (tests): Add test-nan-overflow and
test-nan-payload.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 17 ++++
NEWS | 6 ++
math/Makefile | 3 +-
math/s_nan.c | 9 +--
math/s_nanf.c | 9 +--
math/s_nanl.c | 9 +--
math/{test-powl.c => test-nan-overflow.c} | 59 +++++++++------
math/test-nan-payload.c | 122 +++++++++++++++++++++++++++++
stdlib/Versions | 1 +
9 files changed, 187 insertions(+), 48 deletions(-)
copy math/{test-powl.c => test-nan-overflow.c} (51%)
create mode 100644 math/test-nan-payload.c
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To: glibc-bugs@sourceware.org
Subject: [Bug math/16961] nan function incorrect handling of bad sequences
Date: Fri, 04 Dec 2015 20:38:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #7 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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To: glibc-bugs@sourceware.org
Subject: [Bug math/16962] nan function unbounded stack allocation
Date: Fri, 04 Dec 2015 20:38:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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Target Milestone|--- |2.23
--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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From: "ian at airs dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nss/19341] New: statically linked multi-threaded program fails to initialize ctype info in existing threads
Date: Mon, 07 Dec 2015 18:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19341
Bug ID: 19341
Summary: statically linked multi-threaded program fails to
initialize ctype info in existing threads
Product: glibc
Version: 2.21
Status: NEW
Severity: normal
Priority: P2
Component: nss
Assignee: unassigned at sourceware dot org
Reporter: ian at airs dot com
Target Milestone: ---
This glibc bug report is extracted from https://golang.org/issue/13470.
If you statically link the following C program and run it on Ubuntu Wily, which
uses glibc 2.21, it will crash.
I believe that the problem is that the ctype code relies on TLS variables
initialized by __ctype_init. The getpwuid_r function in a statically linked
program relies on opening a supporting shared library. The supporting shared
library can not see the ctype information in the statically linked executable,
which has no dynamic symbol table, and therefore has its own copy. That copy
is correctly initialized by a call to __ctype_init. However, if there are any
existing threads, the shared library copy of the TLS ctype information is never
initialized. So, if the program manages to call getpwuid_r on a thread that
existed when the shared library was opened, it crashes.
Test case:
#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <pwd.h>
#include <pthread.h>
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
static void *thread(void *arg) {
struct passwd pwd;
char buf[1024];
struct passwd *result;
pthread_mutex_lock(&mutex);
getpwuid_r(0, &pwd, buf, sizeof buf, &result);
return NULL;
}
int main() {
pthread_t tid;
struct passwd pwd;
char buf[1024];
struct passwd *result;
void *retval;
pthread_mutex_lock(&mutex);
pthread_create(&tid, NULL, thread, NULL);
getpwuid_r(0, &pwd, buf, sizeof buf, &result);
pthread_mutex_unlock(&mutex);
pthread_join(tid, &retval);
return 0;
}
Contents of /etc/nsswitch.conf on the failing system:
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.
passwd: compat
group: compat
shadow: compat
gshadow: files
hosts: files dns
networks: files
protocols: db files
services: db files
ethers: db files
rpc: db files
netgroup: nis
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From: "tamird at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nss/19341] statically linked multi-threaded program fails to initialize ctype info in existing threads
Date: Mon, 07 Dec 2015 18:49:00 -0000
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tamird at gmail dot com changed:
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----------------------------------------------------------------------------
CC| |tamird at gmail dot com
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Subject: [Bug nss/19341] statically linked multi-threaded program fails to initialize ctype info in existing threads
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https://sourceware.org/bugzilla/show_bug.cgi?id=19341
Carlos O'Donell <carlos at redhat dot com> changed:
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Ian Lance Taylor from comment #0)
> This glibc bug report is extracted from https://golang.org/issue/13470.
>
> If you statically link the following C program and run it on Ubuntu Wily,
> which uses glibc 2.21, it will crash.
>
> I believe that the problem is that the ctype code relies on TLS variables
> initialized by __ctype_init. The getpwuid_r function in a statically linked
> program relies on opening a supporting shared library. The supporting
> shared library can not see the ctype information in the statically linked
> executable, which has no dynamic symbol table, and therefore has its own
> copy. That copy is correctly initialized by a call to __ctype_init.
> However, if there are any existing threads, the shared library copy of the
> TLS ctype information is never initialized. So, if the program manages to
> call getpwuid_r on a thread that existed when the shared library was opened,
> it crashes.
We first noticed this at Red Hat with the docker self tests in September.
Incarnations of this bug have been around for a long time and they have been
closed by the previous community as unsupported. The current community is
committed to supporting some kind of static linking, but with caveats and good
documentation about the limits of static linking.
Your analysis is correct (I did the same debugging myself), and I've had a fix
for this internally at Red Hat for a while. You just switch the ctype
initialization to an init-at-first-use pattern, but that doesn't solve all the
problems. You get even more breakage further on from other global state
variables which are not shared. The first one is __libc_multiple_threads, which
in the dynamic shared "namespace" is zero because no threads were created in
that namespace. It causes the dynamic namespace to avoid doing any locking
because it doesn't think there are any threads active (but there are). This
leads to race conditions in malloc and lots of problems.
We've been looking at this internally at Red Hat on-and-off for the last couple
of months. There is no easy solution. You have the same problem with errno, and
all other global state variables that need to be shared between the static
"namespace" and the dynamic "namespace." In fact I've been pondering a similar
problem for the extensions to dlmopen that I'm working on which would allow
alternate namespaces to atleast operate sensibly.
Either way there is going to be quit a bit of work required to fix this and it
won't get fixed soon. We'll need some kind of collected shared global state we
can pass to the new namespace which allows the implementation to behave
sensibly.
The conclusion at Red Hat was to continue to investigate the issue upstream,
but that Docker would move to a non-static linkage, and that any statically
linked applications would be very very small and not likely to use any of the
features which trigger this problem.
I don't know if that's the answer you wanted to hear, but there it is. I'm
moving this bug to SUSPENDED until someone steps up to work on the issue. I
won't get to this for a while, but I'm happy to review patches or give
technical guidance on proposed solutions.
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>From glibc-bugs-return-30635-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 07 19:42:28 2015
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Subject: [Bug nss/19341] statically linked multi-threaded program fails to initialize ctype info in existing threads
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>From glibc-bugs-return-30638-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 08 13:55:52 2015
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From: "Michael.Baumann at vector dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/19344] New: <sched.h> should support SCHED_DEADLINE
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Bug ID: 19344
Summary: <sched.h> should support SCHED_DEADLINE
Product: glibc
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I am missing the support to use the SCHED_DEADLINE policy.
This policy is available in the mainline Kernel since kernel version 3.14.
To use it we need the sched_setattr() function and struct sched_attr
according to http://man7.org/linux/man-pages/man2/sched_getattr.2.html
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>From glibc-bugs-return-30639-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 08 23:26:41 2015
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From: "aurelien at aurel32 dot net" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/19347] New: grantpt: try to force a specific gid even without pt_chown
Date: Tue, 08 Dec 2015 23:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19347
Bug ID: 19347
Summary: grantpt: try to force a specific gid even without
pt_chown
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
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POSIX specifies that the grantpt() function should change the pty node to
permission mode 0620 and to a specific group, which is tty or 5 on Linux. For
that the glibc implementation try to down a chown with the correct group, but
when it is not correct it is very unlikely to be able to succeed for non-root
user. When the chown fails, the whole grantpt() function fails.
This happens for example with a misconfigured (wrt POSIX) /dev/pts filesystem
where the mount option gid=5 is not present. Unfortunately due to the strange
kernel behavior wrt multiple devpts mount, this can happen more than expected.
It can also be an admin choice to default to 0600 to not allow the tty group a
write access (default to mesg n).
When the GNU libc is built without pt_chown, the creation of the pty node, the
group and the permission mode are delegated to the kernel. The libc should just
trust that and therefore not try to change things, beyond the minimal security.
This would allow the grantpt() to work for almost every devpts configuration,
basically as long as the uid of the pty node matches the one requesting it.
A first patch is available there
https://sourceware.org/ml/libc-alpha/2015-12/msg00107.html
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>From glibc-bugs-return-30640-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 09 14:40:25 2015
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Subject: [Bug regex/19348] New: re_search is incredibly slow when processing '$' on long lines
Date: Wed, 09 Dec 2015 14:40:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19348
Bug ID: 19348
Summary: re_search is incredibly slow when processing '$' on
long lines
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: regex
Assignee: unassigned at sourceware dot org
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CC: drepper.fsp at gmail dot com
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$ echo {1..5000000} > file # adjust based on CPU speed
$ time sed -e 's/$/stuff/' file >/dev/null # logical way to append to lines
sed -e 's/$/stuff/' file > /dev/null 2.91s user 0.09s system 99% cpu 3.007
total
$ time sed -e 's/.*/&stuff/' file >/dev/null
sed -e 's/.*/&stuff/' file > /dev/null 1.62s user 0.34s system 99% cpu
1.972 total
musl via busybox sed was tested to be 2x faster in the first case than in the
second.
intuitively, this does not make sense. .* should be slower because it needs to
match the entire string whereas $ can skip to the end of the line (since sed
must already find the new line in order to run the commands).
however, glibc spends an inordinate amount of time inside of
check_halt_state_context, re_state_reconstruct, and re_string_context_at,
according to callgrind.
I am unsure whether this qualifies as a glibc bug or how to fix it, but I think
it is useful to have on the record.
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>From glibc-bugs-return-30641-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 09 16:43:37 2015
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Subject: [Bug regex/19348] re_search matches $ much slower than .*
Date: Wed, 09 Dec 2015 16:43:00 -0000
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|slow when processing '$' on |slower than .*
|long lines |
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>From glibc-bugs-return-30642-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 09 21:06:02 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19349] New: [ldbl-128ibm] tanhl inaccurate for small arguments
Date: Wed, 09 Dec 2015 21:06:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19349
Bug ID: 19349
Summary: [ldbl-128ibm] tanhl inaccurate for small arguments
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
The ldbl-128ibm implementation of tanhl is inaccurate for small arguments.
E.g.:
Failure: Test: tanh (0x1p-60)
Result:
is: 8.67361737988403547958278625222217e-19
0x1.000000000000001000000000000p-60
should be: 8.67361737988403547205962240695953e-19
0x1.000000000000000000000000000p-60
difference: 7.52316384526264005099991383822237e-37
0x1.000000000000000000000000000p-120
ulp : 35184372088832.0000
max.ulp : 1.0000
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Subject: [Bug math/19350] New: [ldbl-128ibm] sinhl spurious overflows
Date: Wed, 09 Dec 2015 21:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19350
Bug ID: 19350
Summary: [ldbl-128ibm] sinhl spurious overflows
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
The ldbl-128ibm implementation of sinhl uses a slightly too small overflow
threshold (similar to bug 16407 for coshl). E.g.:
Failure: sinh (0x2.c679d1f73f0fb624d358b213a7p+8): Exception "Overflow" set
Failure: sinh (0x2.c679d1f73f0fb624d358b213a7p+8): errno set to 34, expected 0
(unchanged)
Failure: Test: sinh (0x2.c679d1f73f0fb624d358b213a7p+8)
Result:
is: inf inf
should be: 1.79769313486231580793728971403462e+308
0x1.fffffffffffff7fffffffffe608p+1023
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Subject: [Bug math/19349] [ldbl-128ibm] tanhl inaccurate for small arguments
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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Subject: [Bug math/19349] [ldbl-128ibm] tanhl inaccurate for small arguments
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ca2fcac629b9b7781ccd52685b28741d89ff128f
commit ca2fcac629b9b7781ccd52685b28741d89ff128f
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Dec 9 21:20:18 2015 +0000
Fix ldbl-128ibm tanhl inaccuracy for small arguments (bug 19349).
The ldbl-128ibm implementation of tanhl is inaccurate for small
arguments, because it returns x*(1+x) (maybe in an attempt to raise
"inexact") when x itself would be the accurate return value but
multiplying by 1+x introduces large errors. This patch fixes it to
return x in that case (when the mathematical result is x plus a
negligible remainder on the order of x^3) to avoid those errors.
Tested for powerpc.
[BZ #19349]
* sysdeps/ieee754/ldbl-128ibm/s_tanhl.c (__tanhl): Return argument
when small.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 4 ++++
sysdeps/ieee754/ldbl-128ibm/s_tanhl.c | 2 +-
2 files changed, 5 insertions(+), 1 deletions(-)
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Subject: [Bug math/19350] [ldbl-128ibm] sinhl spurious overflows
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commit f517e06ab71e07b24bf085063b0ba2d072da4a56
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Dec 9 22:37:08 2015 +0000
Fix ldbl-128ibm sinhl spurious overflows (bug 19350).
The ldbl-128ibm implementation of sinhl uses a slightly too small
overflow threshold (similar to bug 16407 for coshl). This patch fixes
it to use a safe threshold (so that values whose high part is above
the value compared with definitely result in an overflow in all
rounding modes).
Tested for powerpc.
[BZ #19350]
* sysdeps/ieee754/ldbl-128ibm/e_sinhl.c (__ieee754_sinhl):
Increase overflow threshold.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 4 ++++
sysdeps/ieee754/ldbl-128ibm/e_sinhl.c | 2 +-
2 files changed, 5 insertions(+), 1 deletions(-)
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Subject: [Bug math/16407] ldbl-128ibm coshl spurious overflows
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commit f517e06ab71e07b24bf085063b0ba2d072da4a56
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Dec 9 22:37:08 2015 +0000
Fix ldbl-128ibm sinhl spurious overflows (bug 19350).
The ldbl-128ibm implementation of sinhl uses a slightly too small
overflow threshold (similar to bug 16407 for coshl). This patch fixes
it to use a safe threshold (so that values whose high part is above
the value compared with definitely result in an overflow in all
rounding modes).
Tested for powerpc.
[BZ #19350]
* sysdeps/ieee754/ldbl-128ibm/e_sinhl.c (__ieee754_sinhl):
Increase overflow threshold.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 4 ++++
sysdeps/ieee754/ldbl-128ibm/e_sinhl.c | 2 +-
2 files changed, 5 insertions(+), 1 deletions(-)
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Subject: [Bug math/19350] [ldbl-128ibm] sinhl spurious overflows
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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Subject: [Bug math/19351] New: [ldbl-128ibm] logl inaccurate near 1
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https://sourceware.org/bugzilla/show_bug.cgi?id=19351
Bug ID: 19351
Summary: [ldbl-128ibm] logl inaccurate near 1
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
The ldbl-128ibm implementation of logl is inaccurate for arguments near 1.
E.g.:
Failure: Test: log (0xf.ffffffffffff8p-4)
Result:
is: -1.11022302462515654042363166809082e-16
-0x1.000000000000000000000000000p-53
should be: -1.11022302462515660205338988848237e-16
-0x1.000000000000040000000000000p-53
difference: 6.16297582203915472977912941627177e-33
0x1.000000000000000000000000000p-107
ulp : 2251799813685248.0000
max.ulp : 1.0000
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Subject: [Bug math/19351] [ldbl-128ibm] logl inaccurate near 1
Date: Wed, 09 Dec 2015 23:52:00 -0000
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e6a6b1c3de62f3ae3f0e5ac5bdcc49a3342f03e7
commit e6a6b1c3de62f3ae3f0e5ac5bdcc49a3342f03e7
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Dec 9 23:51:11 2015 +0000
Fix ldbl-128ibm logl inaccuracy near 1 (bug 19351).
The ldbl-128ibm implementation of logl is inaccurate for arguments
near 1, because when deciding whether to bypass a series expansion for
log(1+z), where z = x-1, it compares the square of z rather than z
itself with an epsilon value. This patch fixes that comparison, so
eliminating the test failures for inaccuracy of logl in such cases.
Tested for powerpc.
[BZ #19351]
* sysdeps/ieee754/ldbl-128ibm/e_logl.c (__ieee754_logl): When
expanding log(1+z), compare z rather than its square with epsilon
to determine when to avoid evaluating the expansion.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
sysdeps/ieee754/ldbl-128ibm/e_logl.c | 2 +-
2 files changed, 6 insertions(+), 1 deletions(-)
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Subject: [Bug math/19351] [ldbl-128ibm] logl inaccurate near 1
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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Subject: [Bug localedata/16061] Review / update transliteration data
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |carlos at redhat dot com
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #7 from Carlos O'Donell <carlos at redhat dot com> ---
This fixes bug 16061.
My apologies to Mike Fabian for failing it use --author, the ChangeLog still
credits you directly for these changes.
commit dd8e8e547647bf7a3f6feb816a848a846feeaf14
Author: Carlos O'Donell <carlos@systemhalted.org>
Date: Wed Dec 9 22:27:41 2015 -0500
Update transliteration support to Unicode 7.0.0.
The transliteration files are now autogenerated from upstream Unicode
data.
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Subject: [Bug localedata/89]=?UTF-8?Q? Locales nb_NO and nn_NO should transliterate æøå?Date: Thu, 10 Dec 2015 04:11:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|DUPLICATE |---
--- Comment #11 from Carlos O'Donell <carlos at redhat dot com> ---
Reopening since this issue will be fixed in an upcoming commit which adjusts
the locales in question with new transliteration rules.
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Subject: [Bug localedata/89]=?UTF-8?Q? Locales nb_NO and nn_NO should transliterate æøå?Date: Thu, 10 Dec 2015 04:12:00 -0000
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--- Comment #12 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=589ac5232867e36a8242c2505a45274b6c7b0f00
commit 589ac5232867e36a8242c2505a45274b6c7b0f00
Author: Mike FABIAN <mfabian@redhat.com>
Date: Wed Dec 9 23:08:36 2015 -0500
Update da, nb, nn, and sv locales (Bug 89)
Add transliteration rules for da, nb, nn, and sv locales.
-----------------------------------------------------------------------
Summary of changes:
localedata/ChangeLog | 5 +++++
localedata/locales/da_DK | 21 ++++++++++++++++++---
localedata/locales/nb_NO | 22 ++++++++++++++++++++++
localedata/locales/sv_SE | 22 ++++++++++++++++++++++
4 files changed, 67 insertions(+), 3 deletions(-)
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Subject: [Bug localedata/89]=?UTF-8?Q? Locales nb_NO and nn_NO should transliterate æøå?Date: Thu, 10 Dec 2015 04:15:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #13 from Carlos O'Donell <carlos at redhat dot com> ---
Fixed checked in for 2.23.
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Subject: [Bug libc/19347] grantpt: try to force a specific gid even without pt_chown
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Florian Weimer <fweimer at redhat dot com> changed:
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CC| |fweimer at redhat dot com
Flags| |security-
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/18568] Update locale data to Unicode 8.0
Date: Thu, 10 Dec 2015 16:51:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #16 from Carlos O'Donell <carlos at redhat dot com> ---
This is now fixed.
commit 23256f5ed889266223380c02b2750d19e3fe666b
Author: Mike FABIAN <mfabian@redhat.com>
Date: Thu Dec 10 00:30:51 2015 -0500
Update to Unicode 8.0.0.
Update __STDC_ISO_10646__ to 201505L for Unicode 8.0.0.
Update character encoding, ctype, and transliteration tables.
New scripts autogenerate transliteration tables.
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Subject: [Bug stdio/19165] fread overflow
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Subject: [Bug stdio/19165] fread overflow
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--- Comment #7 from Paul Pluzhnikov <ppluzhnikov at google dot com> ---
Some patches and discussion:
https://sourceware.org/ml/libc-alpha/2015-10/msg00894.html
https://sourceware.org/ml/libc-alpha/2015-12/msg00128.html
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>From glibc-bugs-return-30660-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 11 11:08:16 2015
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From: "guonic at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/19356] New: unwind stack failed if stack including syscall on armv7
Date: Fri, 11 Dec 2015 11:08:00 -0000
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Bug ID: 19356
Summary: unwind stack failed if stack including syscall on
armv7
Product: glibc
Version: 2.20
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: guonic at gmail dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Scenario:
using libunwind in a signal handler to output backtrace, always failed if
backtrace including syscall function.
Wrong Backtrace:
1 ip:0xb6443990 sp:0xbe9c38a8 /usr/lib/libc-2.20.so(syscall + 32)
2 ip:0xb6e9d0af sp:0xbe9c38a8 /usr/lib/libuv.so.11.0.0(uv__epoll_wait + 22)
3 ip:0xb6e9d2f8 sp:0xbe9c38c0 /usr/lib/libuv.so.11.0.0(__aeabi_uldivmod +
44)
Right Backtrace:
1 ip:0xb63d7990 sp:0xbeab48a8 /usr/lib/libc-2.20.so(syscall + 32)
2 ip:0xb6e310af sp:0xbeab48b8 /usr/lib/libuv.so.11.0.0(uv__epoll_wait + 22)
3 ip:0xb6e300a7 sp:0xbeab48d0 /usr/lib/libuv.so.11.0.0(uv__io_poll + 266)
4 ip:0xb6e285a1 sp:0xbeab8918 /usr/lib/libuv.so.11.0.0(uv_run + 144)
5 ip:0xb66af495 sp:0xbeab8950 /usr/lib/libbase.so.1.0.0(yunos::Looper::run()
+ 72)
6 ip:0xb6e8dd9b sp:0xbeab8960 /usr/lib/libnode.so(node::Start(int, char**) +
1050)
7 ip:0xb631d6d4 sp:0xbeab8ae8 /usr/lib/libc-2.20.so(__libc_start_main + 276)
8 ip:0x10800 sp:0xbeab8c28 /usr/bin/node(_start + 44)
After investigate with syscall & unwind info with readelf/objdump, the root
cause is wrong unwind info provided from libc-2.20.so
Dissembled code of syscall:
000d1948 <setlogmask>:
d1948: e59f3010 ldr r3, [pc, #16] ; d1960
<setlogmask+0x18>
d194c: e2502000 subs r2, r0, #0
d1950: e08f3003 add r3, pc, r3
d1954: e593000c ldr r0, [r3, #12]
d1958: 1583200c strne r2, [r3, #12]
d195c: e12fff1e bx lr
d1960: 00078950 andeq r8, r7, r0, asr r9
...
000d1970 <syscall>:
d1970: e1a0c00d mov ip, sp
d1974: e92d00f0 push {r4, r5, r6, r7}
d1978: e1a07000 mov r7, r0
d197c: e1a00001 mov r0, r1
d1980: e1a01002 mov r1, r2
d1984: e1a02003 mov r2, r3
d1988: e89c0078 ldm ip, {r3, r4, r5, r6}
d198c: ef000000 svc 0x00000000
d1990: e8bd00f0 pop {r4, r5, r6, r7} ######## PC point
here
d1994: e3700a01 cmn r0, #4096 ; 0x1000
d1998: 312fff1e bxcc lr
d199c: eafd17a3 b 17830 <__libc_start_main+0x270>
Unwind info of syscall:
0xd1890: @0x12fe40
Personality routine: 0x17a80
0xd1948: 0x80b0b0b0 ##### Executed unwind frame if PC was in syscall
Compact model index: 0
0xb0 finish
0xb0 finish
0xb0 finish
0xd19a0: 0x801aabb0
Compact model index: 0
0x1a vsp = vsp + 108
0xab pop {r4, r5, r6, r7, r14}
0xb0 finish
Actually no syscall unwind info in .arm.exidx section, the executed unwind info
is pointed 0xd1948, it failed after frame point to uv__epoll_wait, because of
lost to
pop four register (R4, R5, R6, R7} on syscall frame.
I have write the patch to execute unwind info when pc point to syscalll(addr:
d1990) ike this:
0xa3 pop {r4, r5, r6, r7}
0xb0 finish
0xb0 finish
then get the right backtrace like gdb output.
Is there anything i can do to get the right unwind info from libc-2.20.so
without to change libunwind?
Appreciated in advance!!!!
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Subject: [Bug libc/19356] unwind stack failed if stack including syscall on armv7
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Subject: [Bug libc/19356] unwind stack failed if stack including syscall on armv7
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What |Removed |Added
----------------------------------------------------------------------------
Target| |arm-linux-gnueabi
Host| |linux
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/18491] Update tr_TR LC_CTYPE as part of Unicode updates
Date: Fri, 11 Dec 2015 12:46:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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from 77356912e83601fd0240d22fe4d960348b82b5c3 (commit)
Those revisions listed above that are new to this repository have
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revisions in full, below.
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=85bafe6f3d0e4647af5e74178b46abdf44d3b981
commit 85bafe6f3d0e4647af5e74178b46abdf44d3b981
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Dec 11 12:45:19 2015 +0000
Automate LC_CTYPE generation for tr_TR, update to Unicode 8.0.0 (bug
18491).
This patch makes the automation of Unicode LC_CTYPE generation also
support generating the modified LC_CTYPE used for Turkish (where case
conversions of 'i' and 'I' differ from ASCII conventions), so allowing
that to be more readily kept in sync for future Unicode updates. The
patch includes the locale update generated by the scripts.
Tested for x86_64.
[BZ #18491]
* unicode-gen/unicode_utils.py (to_upper_turkish): New function.
(to_lower_turkish): Likewise.
* unicode-gen/gen_unicode_ctype.py (output_tables): Support
producing output with Turkish case conversions.
(--turkish): New command-line option.
* unicode-gen/Makefile (GENERATED): Add tr_TR.
(tr_TR): New rule.
* locales/tr_TR: Regenerate LC_CTYPE.
-----------------------------------------------------------------------
Summary of changes:
localedata/ChangeLog | 12 +
localedata/locales/tr_TR | 2816 +++++++++++++++++----------
localedata/unicode-gen/Makefile | 10 +-
localedata/unicode-gen/gen_unicode_ctype.py | 18 +-
localedata/unicode-gen/unicode_utils.py | 14 +
5 files changed, 1838 insertions(+), 1032 deletions(-)
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/18491] Update tr_TR LC_CTYPE as part of Unicode updates
Date: Fri, 11 Dec 2015 12:49:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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>From glibc-bugs-return-30664-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 11 12:49:14 2015
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19356] unwind stack failed if stack including syscall on armv7
Date: Fri, 11 Dec 2015 12:49:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
If one function has unwind info that relates to another function (as
opposed to EXIDX_CANTUNWIND for a function with no unwind info), that's a
bug in the static linker ld that was used to link glibc, not a bug in
glibc. ld is meant to insert EXIDX_CANTUNWIND automatically for address
ranges without unwind info.
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>From glibc-bugs-return-30666-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 11 23:42:54 2015
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From: "jurobystricky at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19192] __old_sem_wait never terminates
Date: Fri, 11 Dec 2015 23:42:00 -0000
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--- Comment #3 from Juro Bystricky <jurobystricky at hotmail dot com> ---
We have two sets of routines:
old_sem_init/old_sem_wait
new_sem_init/new_sem_wait
If we use matched pairs, there are no problems.
But there is only one routine sem_open. This one uses the semaphore
structure new_sem. So if we create a semaphore using sem_open, we must
use new_sem_wait. That is not guaranteed and as a matter of fact this is
the cause of the problem I have.
So I think there should be two routines: new_sem_open and old_sem_open as well.
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>From glibc-bugs-return-30667-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 12 10:00:30 2015
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From: "aurelien at aurel32 dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19347] grantpt: try to force a specific gid even without pt_chown
Date: Sat, 12 Dec 2015 10:00:00 -0000
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Aurelien Jarno <aurelien at aurel32 dot net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Aurelien Jarno <aurelien at aurel32 dot net> ---
Fixed in master:
commit 77356912e83601fd0240d22fe4d960348b82b5c3
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Thu Dec 10 22:33:10 2015 +0100
grantpt: trust the kernel about pty group and permission mode
According to POSIX the grantpt() function does the following:
The grantpt() function shall change the mode and ownership of the
slave pseudo-terminal device associated with its master
pseudo-terminal counterpart. The fildes argument is a file descriptor
that refers to a master pseudo-terminal device. The user ID of the
slave shall be set to the real UID of the calling process and the
group ID shall be set to an unspecified group ID. The permission
mode of the slave pseudo-terminal shall be set to readable and
writable by the owner, and writable by the group.
Historically the GNU libc has been responsible to setup the permission
mode to 0620 and the group to 'tty' usually number 5, using the pt_chown
helper, badly known for its security issues. With the creation of the
devpts filesytem in the Linux kernel, this responsibility has been moved
to the Linux kernel. The system is responsible to mount the devpts
filesystem in /dev/pts with the options gid=5 and mode=0620. In that
case the GNU libc has nothing to do and pt_chown is not need anymore. So
far so good.
The problem is that by default the devpts filesystem is shared between
all mounts, and that contrary to other filesystem, the mount options are
honored at the second mount, including for the default mount options.
Given it corresponds to mode=0600 without gid parameter (that is the
filesystem GID of the creating process), it's common to see systems
where the devpts filesystem is mounted using these options. It is enough
to run a "mount -t devpts devpts /mychroot/dev/pts" to come into this
situation, and it's unfortunately wrongly used in a lot of scripts
dealing with chroots, or for creating virtual machines images.
When this happens the GNU libc tries to fix the group and permission
mode of the pty nodes, and given it fails to do so for non-root users,
grantpt() almost always fail. It means users are not able to open new
terminals.
This patch changes grantpt() to not enforce this anymore, while still
enforcing minimum security measures to the permission mode. Therefore
the responsibility to follow POSIX is now shared at the system level,
i.e. kernel + system scripts + GNU libc. It stops trying to change the
group, and makes the pty node readable and writable by the owner, and
writable by the group only when originally writable and when the group
is the tty one.
As a result, on a system wrongly mounted with gid=0 and mode=0600, the
pty nodes won't be accessible by the tty group, but the grantpt()
function will succeed and users will have a working system. The system
is not fully POSIX compliant (which might be an admin choice to default
to "mesg n" mode), but the GNU libc is not to blame here, as without the
pt_chown helper it can't do anything.
With this patch there should not be any reason left to build the GNU
libc with the --enable-pt_chown configure option on a GNU/Linux system.
diff --git a/ChangeLog b/ChangeLog
index 81e5791..80f4635 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2015-12-10 Aurelien Jarno <aurelien@aurel32.net>
+ Jakub Wilk <jwilk@debian.org>
+
+ [BZ #19347]
+ * sysdeps/unix/grantpt.c [!HAVE_PT_CHOWN] (grantpt): Do not try
+ to change the group of the device to the tty group.
+
2015-12-10 Paul Eggert <eggert@cs.ucla.edu>
Split large string section; add truncation advice
diff --git a/sysdeps/unix/grantpt.c b/sysdeps/unix/grantpt.c
index f019b9d..ad5996d 100644
--- a/sysdeps/unix/grantpt.c
+++ b/sysdeps/unix/grantpt.c
@@ -155,6 +155,7 @@ grantpt (int fd)
}
gid_t gid = tty_gid == -1 ? __getgid () : tty_gid;
+#if HAVE_PT_CHOWN
/* Make sure the group of the device is that special group. */
if (st.st_gid != gid)
{
@@ -164,9 +165,26 @@ grantpt (int fd)
/* Make sure the permission mode is set to readable and writable by
the owner, and writable by the group. */
- if ((st.st_mode & ACCESSPERMS) != (S_IRUSR|S_IWUSR|S_IWGRP))
+ mode_t mode = S_IRUSR|S_IWUSR|S_IWGRP;
+#else
+ /* When built without pt_chown, we have delegated the creation of the
+ pty node with the right group and permission mode to the kernel, and
+ non-root users are unlikely to be able to change it. Therefore let's
+ consider that POSIX enforcement is the responsibility of the whole
+ system and not only the GNU libc. Thus accept different group or
+ permission mode. */
+
+ /* Make sure the permission is set to readable and writable by the
+ owner. For security reasons, make it writable by the group only
+ when originally writable and when the group of the device is that
+ special group. */
+ mode_t mode = S_IRUSR|S_IWUSR|
+ ((st.st_gid == gid) ? (st.st_mode & S_IWGRP) : 0);
+#endif
+
+ if ((st.st_mode & ACCESSPERMS) != mode)
{
- if (__chmod (buf, S_IRUSR|S_IWUSR|S_IWGRP) < 0)
+ if (__chmod (buf, mode) < 0)
goto helper;
}
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>From glibc-bugs-return-30668-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 12 23:15:38 2015
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From: "guonic at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19356] unwind stack failed if stack including syscall on armv7
Date: Sat, 12 Dec 2015 23:15:00 -0000
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--- Comment #2 from Guonic <guonic at gmail dot com> ---
(In reply to joseph@codesourcery.com from comment #1)
> If one function has unwind info that relates to another function (as
> opposed to EXIDX_CANTUNWIND for a function with no unwind info), that's a
> bug in the static linker ld that was used to link glibc, not a bug in
> glibc. ld is meant to insert EXIDX_CANTUNWIND automatically for address
> ranges without unwind info.
hi joseph,
thanks for your feedback, i think the unwind function for syscall(range
000d1970 - d199c) should be like
0xd1970: 0x80a3b0b0
Compact model index: 0
0xa3 pop {r4, r5, r6, r7}
0xb0 finish
0xb0 finish
, which can keep the register of SP is same, after unwind from syscall.
Did you mean this is the bug for ld?
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Subject: [Bug libc/18472] Obsolete syscall wrappers should be compat symbols
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----------------------------------------------------------------------------
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--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.23.
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Subject: [Bug libc/18472] Obsolete syscall wrappers should be compat symbols
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eed3e1eb79bcfa9b52609fd875fa2d522e2d6bce
commit eed3e1eb79bcfa9b52609fd875fa2d522e2d6bce
Author: Joseph Myers <joseph@codesourcery.com>
Date: Mon Dec 14 22:52:15 2015 +0000
Make obsolete syscall wrappers into compat symbols (bug 18472).
Various Linux kernel syscalls have become obsolete over time.
Specifically, the following are obsolete in all kernel versions
supported by glibc, are not present for architectures more recently
added to the kernel, and as such, the wrapper functions for them
should be compat symbols, not in static libc and not available for new
links with shared libc.
* bdflush: in Linux 2.6, does nothing if present.
* create_module get_kernel_syms query_module: Linux 2.4 module
interface, syscalls not present in Linux 2.6.
* uselib: part of the mechanism for loading a.out shared libraries,
irrelevant with ELF.
This patch adds support for syscalls.list to list syscall aliases of
the form NAME@VERSION:OBSOLETED, with SHLIB_COMPAT conditionals being
generated for such aliases. Those five syscalls are then made into
compat symbols (obsoleted in glibc 2.23, so future ports won't have
these symbols at all), with the header <sys/kdaemon.h> declaring
bdflush being removed. When we move to 3.2 as minimum kernel version,
the same can be done for nfsservctl (removed in Linux 3.1) as well.
Tested for x86_64 and x86 (testsuite, as well as checking that the
symbols in question indeed become compat symbols, that they are indeed
omitted from static libc, and that the generated SHLIB_COMPAT
conditionals look right).
[BZ #18472]
* sysdeps/unix/Makefile ($(objpfx)stub-syscalls.c): Handle entries
for the form NAME@VERSION:OBSOLETED and generate SHLIB_COMPAT
conditionals for them.
* sysdeps/unix/make-syscalls.sh (emit_weak_aliases): Likewise.
* sysdeps/unix/sysv/linux/sys/kdaemon.h: Remove file.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Remove
sys/kdaemon.h.
* sysdeps/unix/sysv/linux/syscalls.list (bdflush): Make into
compat-only syscall, obsoleted in glibc 2.23.
(create_module): Likewise.
(get_kernel_syms): Likewise.
(query_module): Likewise.
(uselib): Likewise.
* manual/sysinfo.texi (System Parameters): Do not mention bdflush.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 18 ++++++++++++++++++
NEWS | 7 +++++++
manual/sysinfo.texi | 2 --
sysdeps/unix/Makefile | 14 +++++++++++++-
sysdeps/unix/make-syscalls.sh | 21 ++++++++++++++-------
sysdeps/unix/sysv/linux/Makefile | 2 +-
sysdeps/unix/sysv/linux/sys/kdaemon.h | 32 --------------------------------
sysdeps/unix/sysv/linux/syscalls.list | 10 +++++-----
8 files changed, 58 insertions(+), 48 deletions(-)
delete mode 100644 sysdeps/unix/sysv/linux/sys/kdaemon.h
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To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] New: x32: times() return value wrongly truncates/sign extends from 32bit
Date: Mon, 14 Dec 2015 23:12:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19363
Bug ID: 19363
Summary: x32: times() return value wrongly truncates/sign
extends from 32bit
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: time
Assignee: unassigned at sourceware dot org
Reporter: vapier at gentoo dot org
CC: hjl.tools at gmail dot com
Target Milestone: ---
Host: x86_64-linux-gnux32
simple test code:
$ cat times.c
#include <errno.h>
#include <sched.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/syscall.h>
#include <sys/times.h>
#include <sys/wait.h>
main() {
struct tms tbuf;
clock_t res = times(&tbuf);
printf("%llu %llx: %m\n", res, res);
}
$ gcc -mx32 times.c && ./a.out
18446744071615284719 ffffffff832c05ef: Success
times is supposed to return a 64bit value, but the definition on x32 breaks
that. it's because sysdeps/unix/sysv/linux/times.c utilizes INTERNAL_SYSCALL
and those macros on x32 use "long int" everywhere (which is 32bit on x32).
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To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Tue, 15 Dec 2015 00:32:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |hjl.tools at gmail dot com
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 8847
--> https://sourceware.org/bugzilla/attachment.cgi?id=8847&action=edit
A patch
I am testing this. Please give it a try.
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Subject: [Bug libc/19356] unwind stack failed if stack including syscall on armv7
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----------------------------------------------------------------------------
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Product|binutils |glibc
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To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Tue, 15 Dec 2015 03:25:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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The branch, hjl/pr19363 has been created
at 4e2c5f4da35c9c737795092670575d5e89aa563d (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4e2c5f4da35c9c737795092670575d5e89aa563d
commit 4e2c5f4da35c9c737795092670575d5e89aa563d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 19:09:13 2015 -0800
Use INTERNAL_SYSCALL_TIMES for Linux times
The Linux times function, which returns clock_t, is implemented with
INTERNAL_SYSCALL. Since INTERNAL_SYSCALL returns 32-bit integer and
and clock_t is 64-bit on x32, there is mismatch on x32. times is the
only such function since there is lseek.S for x32. This patch replaces
INTERNAL_SYSCALL in Linux times.c with INTERNAL_SYSCALL_TIMES which is
default to INTERNAL_SYSCALL and provides x32 times.c with proper
INTERNAL_SYSCALL_TIMES.
There is no code change on times for i686 nor x86-64. For x32, before
this patch, there are
0000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 63 d0 movslq %eax,%rdx
^^^^^^^^^^ Incorrect signed extension
a: 48 83 fa f2 cmp $0xfffffffffffffff2,%rdx
e: 75 07 jne 17 <__times+0x17>
10: 3d 00 f0 ff ff cmp $0xfffff000,%eax
15: 77 11 ja 28 <__times+0x28>
17: 48 83 fa ff cmp $0xffffffffffffffff,%rdx
1b: b8 00 00 00 00 mov $0x0,%eax
20: 48 0f 45 c2 cmovne %rdx,%rax
24: c3 retq
After this patch, there are
00000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 83 f8 f2 cmp $0xfffffffffffffff2,%rax
b: 75 07 jne 14 <__times+0x14>
d: 3d 00 f0 ff ff cmp $0xfffff000,%eax
12: 77 14 ja 28 <__times+0x28>
14: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
18: ba 00 00 00 00 mov $0x0,%edx
1d: 48 0f 44 c2 cmove %rdx,%rax
21: c3 retq
The incorrect signed extension is gone.
[BZ #19363]
* sysdeps/unix/sysv/linux/times.c (INTERNAL_SYSCALL_TIMES): New.
(__times): Replace INTERNAL_SYSCALL with INTERNAL_SYSCALL_TIMES.
* sysdeps/unix/sysv/linux/x86_64/x32/times.c: New file.
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Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
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--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://sourceware.org/ml/libc-alpha/2015-12/msg00302.html
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https://sourceware.org/bugzilla/show_bug.cgi?id=19363
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|unspecified |2.23
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>From glibc-bugs-return-30678-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 15 03:32:19 2015
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Tue, 15 Dec 2015 03:32:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19363
--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, hjl/pr19363 has been created
at dd66060507f86934da9eb610b384c251ebd1168f (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=dd66060507f86934da9eb610b384c251ebd1168f
commit dd66060507f86934da9eb610b384c251ebd1168f
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 19:09:13 2015 -0800
Use INTERNAL_SYSCALL_TIMES for Linux times
The Linux times function, which returns clock_t, is implemented with
INTERNAL_SYSCALL. Since INTERNAL_SYSCALL returns 32-bit integer and
and clock_t is 64-bit on x32, this is a mismatch on x32. times is the
only such function since there is lseek.S for x32. This patch replaces
INTERNAL_SYSCALL in Linux times.c with INTERNAL_SYSCALL_TIMES which is
default to INTERNAL_SYSCALL and provides x32 times.c with proper
INTERNAL_SYSCALL_TIMES.
There is no code change on times for i686 nor x86-64. For x32, before
this patch, there are
0000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 63 d0 movslq %eax,%rdx
^^^^^^^^^^ Incorrect signed extension
a: 48 83 fa f2 cmp $0xfffffffffffffff2,%rdx
e: 75 07 jne 17 <__times+0x17>
10: 3d 00 f0 ff ff cmp $0xfffff000,%eax
15: 77 11 ja 28 <__times+0x28>
17: 48 83 fa ff cmp $0xffffffffffffffff,%rdx
1b: b8 00 00 00 00 mov $0x0,%eax
20: 48 0f 45 c2 cmovne %rdx,%rax
24: c3 retq
After this patch, there are
00000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 83 f8 f2 cmp $0xfffffffffffffff2,%rax
b: 75 07 jne 14 <__times+0x14>
d: 3d 00 f0 ff ff cmp $0xfffff000,%eax
12: 77 14 ja 28 <__times+0x28>
14: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
18: ba 00 00 00 00 mov $0x0,%edx
1d: 48 0f 44 c2 cmove %rdx,%rax
21: c3 retq
The incorrect signed extension is gone.
[BZ #19363]
* sysdeps/unix/sysv/linux/times.c (INTERNAL_SYSCALL_TIMES): New.
(__times): Replace INTERNAL_SYSCALL with INTERNAL_SYSCALL_TIMES.
* sysdeps/unix/sysv/linux/x86_64/x32/times.c: New file.
-----------------------------------------------------------------------
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>From glibc-bugs-return-30679-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 15 04:36:57 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Tue, 15 Dec 2015 04:36:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, hjl/pr19363 has been created
at bed04d2261bded5888f96a618ed770a4de6dc69a (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bed04d2261bded5888f96a618ed770a4de6dc69a
commit bed04d2261bded5888f96a618ed770a4de6dc69a
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 20:35:51 2015 -0800
Use REGISTERS_CLOBBERED_BY_SYSCALL
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d4f465df65a5723ede4cf933afee5582312fc603
commit d4f465df65a5723ede4cf933afee5582312fc603
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 20:35:40 2015 -0800
Add REGISTERS_CLOBBERED_BY_SYSCALL
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8a4f1e5889edc41f97c861af81d0f0354d0bc75a
commit 8a4f1e5889edc41f97c861af81d0f0354d0bc75a
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 19:09:13 2015 -0800
Use INTERNAL_SYSCALL_TIMES for Linux times
The Linux times function, which returns clock_t, is implemented with
INTERNAL_SYSCALL. Since INTERNAL_SYSCALL returns 32-bit integer and
and clock_t is 64-bit on x32, this is a mismatch on x32. times is the
only such function. This patch replaces INTERNAL_SYSCALL in Linux
times.c with INTERNAL_SYSCALL_TIMES which is default to INTERNAL_SYSCALL
and provides x32 times.c with proper INTERNAL_SYSCALL_TIMES.
There is no code change on times for i686 nor x86-64. For x32, before
this patch, there are
0000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 63 d0 movslq %eax,%rdx
^^^^^^^^^^ Incorrect signed extension
a: 48 83 fa f2 cmp $0xfffffffffffffff2,%rdx
e: 75 07 jne 17 <__times+0x17>
10: 3d 00 f0 ff ff cmp $0xfffff000,%eax
15: 77 11 ja 28 <__times+0x28>
17: 48 83 fa ff cmp $0xffffffffffffffff,%rdx
1b: b8 00 00 00 00 mov $0x0,%eax
20: 48 0f 45 c2 cmovne %rdx,%rax
24: c3 retq
After this patch, there are
00000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 83 f8 f2 cmp $0xfffffffffffffff2,%rax
b: 75 07 jne 14 <__times+0x14>
d: 3d 00 f0 ff ff cmp $0xfffff000,%eax
12: 77 14 ja 28 <__times+0x28>
14: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
18: ba 00 00 00 00 mov $0x0,%edx
1d: 48 0f 44 c2 cmove %rdx,%rax
21: c3 retq
The incorrect signed extension is gone.
[BZ #19363]
* sysdeps/unix/sysv/linux/times.c (INTERNAL_SYSCALL_TIMES): New.
(__times): Replace INTERNAL_SYSCALL with INTERNAL_SYSCALL_TIMES.
* sysdeps/unix/sysv/linux/x86_64/x32/times.c: New file.
xxx
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>From glibc-bugs-return-30680-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 15 10:56:43 2015
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From: "aph at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/11787] Program with large TLS segments fail.
Date: Tue, 15 Dec 2015 10:56:00 -0000
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aph at redhat dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aph at redhat dot com
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>From glibc-bugs-return-30681-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 15 12:41:26 2015
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/17197] Redundant shift character in iconv conversion output at block boundary
Date: Tue, 15 Dec 2015 12:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=17197
--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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The branch, master has been updated
via 42d6443faf5e8b5c70474923bfcc021b77ee0095 (commit)
from 04ae79a363e2a85096c4dbdf6d5469d3a19a6907 (commit)
Those revisions listed above that are new to this repository have
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revisions in full, below.
- Log -----------------------------------------------------------------
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commit 42d6443faf5e8b5c70474923bfcc021b77ee0095
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Jul 24 17:32:56 2014 +0200
Don't emit invalid extra shift character at block boundary by iconv (bug
17197)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 13 ++++++
iconvdata/Makefile | 5 ++-
iconvdata/bug-iconv10.c | 94 +++++++++++++++++++++++++++++++++++++++++++++++
iconvdata/ibm930.c | 2 +-
iconvdata/ibm933.c | 2 +-
iconvdata/ibm935.c | 2 +-
iconvdata/ibm937.c | 2 +-
iconvdata/ibm939.c | 2 +-
8 files changed, 116 insertions(+), 6 deletions(-)
create mode 100644 iconvdata/bug-iconv10.c
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>From glibc-bugs-return-30682-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 15 13:11:24 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug locale/17197] Redundant shift character in iconv conversion output at block boundary
Date: Tue, 15 Dec 2015 13:11:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
Fixed in 2.23
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>From glibc-bugs-return-30683-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 15 13:49:13 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Tue, 15 Dec 2015 13:49:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, hjl/pr19363/master has been created
at e31f1cb4a363db73fe09d99f800907950aec7122 (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e31f1cb4a363db73fe09d99f800907950aec7122
commit e31f1cb4a363db73fe09d99f800907950aec7122
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 19:09:13 2015 -0800
Use INTERNAL_SYSCALL_TIMES* macros for Linux times
The Linux times function, which returns clock_t, is implemented with
INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P and
INTERNAL_SYSCALL_ERRNO. Since INTERNAL_SYSCALL* macros use 32-bit
integer and clock_t is 64-bit on x32, this is a mismatch on x32. All
system calls returning 64-bit integer, which are lseek, time and times,
must be handled specially for x32. lseek is handled by x32 lseek.S and
time doesn't check syscall return. times is the only missed one.
This patch replaces INTERNAL_SYSCALL* macros in Linux times.c with
INTERNAL_SYSCALL_TIMES* macros which are default to INTERNAL_SYSCALL*
macros and provides x32 times.c with proper INTERNAL_SYSCALL_TIMES*
macros.
There is no code change on times for i686 nor x86-64. For x32, before
this patch, there are
0000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 63 d0 movslq %eax,%rdx
^^^^^^^^^^ Incorrect signed extension
a: 48 83 fa f2 cmp $0xfffffffffffffff2,%rdx
e: 75 07 jne 17 <__times+0x17>
10: 3d 00 f0 ff ff cmp $0xfffff000,%eax
^^^^^^^^^^^^^^^^^^^^^ 32-bit compare
15: 77 11 ja 28 <__times+0x28>
17: 48 83 fa ff cmp $0xffffffffffffffff,%rdx
1b: b8 00 00 00 00 mov $0x0,%eax
20: 48 0f 45 c2 cmovne %rdx,%rax
24: c3 retq
After this patch, there are
00000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 83 f8 f2 cmp $0xfffffffffffffff2,%rax
b: 75 08 jne 15 <__times+0x15>
d: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
13: 77 13 ja 28 <__times+0x28>
15: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
19: ba 00 00 00 00 mov $0x0,%edx
1e: 48 0f 44 c2 cmove %rdx,%rax
22: c3 retq
The incorrect signed extension and 32-bit compare are gone.
[BZ #19363]
* sysdeps/unix/sysv/linux/times.c (INTERNAL_SYSCALL_TIMES_DECL):
New.
(INTERNAL_SYSCALL_TIMES): Likewise.
(INTERNAL_SYSCALL_TIMES_ERROR_P): Likewise.
(INTERNAL_SYSCALL_TIMES_ERRNO): Likewise.
(__times): Replace INTERNAL_SYSCALL* macros with
INTERNAL_SYSCALL_TIMES* macros.
* sysdeps/unix/sysv/linux/x86_64/x32/times.c: New file.
-----------------------------------------------------------------------
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Tue, 15 Dec 2015 13:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19363
--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, hjl/pr19363/clobber has been created
at bed04d2261bded5888f96a618ed770a4de6dc69a (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bed04d2261bded5888f96a618ed770a4de6dc69a
commit bed04d2261bded5888f96a618ed770a4de6dc69a
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 20:35:51 2015 -0800
Use REGISTERS_CLOBBERED_BY_SYSCALL
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d4f465df65a5723ede4cf933afee5582312fc603
commit d4f465df65a5723ede4cf933afee5582312fc603
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 20:35:40 2015 -0800
Add REGISTERS_CLOBBERED_BY_SYSCALL
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8a4f1e5889edc41f97c861af81d0f0354d0bc75a
commit 8a4f1e5889edc41f97c861af81d0f0354d0bc75a
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 19:09:13 2015 -0800
Use INTERNAL_SYSCALL_TIMES for Linux times
The Linux times function, which returns clock_t, is implemented with
INTERNAL_SYSCALL. Since INTERNAL_SYSCALL returns 32-bit integer and
and clock_t is 64-bit on x32, this is a mismatch on x32. times is the
only such function. This patch replaces INTERNAL_SYSCALL in Linux
times.c with INTERNAL_SYSCALL_TIMES which is default to INTERNAL_SYSCALL
and provides x32 times.c with proper INTERNAL_SYSCALL_TIMES.
There is no code change on times for i686 nor x86-64. For x32, before
this patch, there are
0000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 63 d0 movslq %eax,%rdx
^^^^^^^^^^ Incorrect signed extension
a: 48 83 fa f2 cmp $0xfffffffffffffff2,%rdx
e: 75 07 jne 17 <__times+0x17>
10: 3d 00 f0 ff ff cmp $0xfffff000,%eax
15: 77 11 ja 28 <__times+0x28>
17: 48 83 fa ff cmp $0xffffffffffffffff,%rdx
1b: b8 00 00 00 00 mov $0x0,%eax
20: 48 0f 45 c2 cmovne %rdx,%rax
24: c3 retq
After this patch, there are
00000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 83 f8 f2 cmp $0xfffffffffffffff2,%rax
b: 75 07 jne 14 <__times+0x14>
d: 3d 00 f0 ff ff cmp $0xfffff000,%eax
12: 77 14 ja 28 <__times+0x28>
14: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
18: ba 00 00 00 00 mov $0x0,%edx
1d: 48 0f 44 c2 cmove %rdx,%rax
21: c3 retq
The incorrect signed extension is gone.
[BZ #19363]
* sysdeps/unix/sysv/linux/times.c (INTERNAL_SYSCALL_TIMES): New.
(__times): Replace INTERNAL_SYSCALL with INTERNAL_SYSCALL_TIMES.
* sysdeps/unix/sysv/linux/x86_64/x32/times.c: New file.
xxx
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Tue, 15 Dec 2015 17:01:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19363
--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, hjl/pr19363/2.22 has been created
at 61297097311b652596ecb1e14fa5cdd64afd6422 (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=61297097311b652596ecb1e14fa5cdd64afd6422
commit 61297097311b652596ecb1e14fa5cdd64afd6422
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 19:09:13 2015 -0800
Use INTERNAL_SYSCALL_TIMES* macros for Linux times
The Linux times function, which returns clock_t, is implemented with
INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P and
INTERNAL_SYSCALL_ERRNO. Since INTERNAL_SYSCALL* macros use 32-bit
integer and clock_t is 64-bit on x32, this is a mismatch on x32. All
system calls returning 64-bit integer, which are lseek, time and times,
must be handled specially for x32. lseek is handled by x32 lseek.S and
time doesn't check syscall return. times is the only missed one.
This patch replaces INTERNAL_SYSCALL* macros in Linux times.c with
INTERNAL_SYSCALL_TIMES* macros which are default to INTERNAL_SYSCALL*
macros and provides x32 times.c with proper INTERNAL_SYSCALL_TIMES*
macros.
There is no code change on times for i686 nor x86-64. For x32, before
this patch, there are
0000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 63 d0 movslq %eax,%rdx
^^^^^^^^^^ Incorrect signed extension
a: 48 83 fa f2 cmp $0xfffffffffffffff2,%rdx
e: 75 07 jne 17 <__times+0x17>
10: 3d 00 f0 ff ff cmp $0xfffff000,%eax
^^^^^^^^^^^^^^^^^^^^^ 32-bit compare
15: 77 11 ja 28 <__times+0x28>
17: 48 83 fa ff cmp $0xffffffffffffffff,%rdx
1b: b8 00 00 00 00 mov $0x0,%eax
20: 48 0f 45 c2 cmovne %rdx,%rax
24: c3 retq
After this patch, there are
00000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 83 f8 f2 cmp $0xfffffffffffffff2,%rax
b: 75 08 jne 15 <__times+0x15>
d: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
13: 77 13 ja 28 <__times+0x28>
15: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
19: ba 00 00 00 00 mov $0x0,%edx
1e: 48 0f 44 c2 cmove %rdx,%rax
22: c3 retq
The incorrect signed extension and 32-bit compare are gone.
[BZ #19363]
* sysdeps/unix/sysv/linux/times.c (INTERNAL_SYSCALL_TIMES_DECL):
New.
(INTERNAL_SYSCALL_TIMES): Likewise.
(INTERNAL_SYSCALL_TIMES_ERROR_P): Likewise.
(INTERNAL_SYSCALL_TIMES_ERRNO): Likewise.
(__times): Replace INTERNAL_SYSCALL* macros with
INTERNAL_SYSCALL_TIMES* macros.
* sysdeps/unix/sysv/linux/x86_64/x32/times.c: New file.
-----------------------------------------------------------------------
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>From glibc-bugs-return-30686-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 15 20:11:44 2015
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From: "ninjalj at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19366] New: returning from a thread should disable cancellation
Date: Tue, 15 Dec 2015 20:11:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19366
Bug ID: 19366
Summary: returning from a thread should disable cancellation
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: ninjalj at gmail dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 8848
--> https://sourceware.org/bugzilla/attachment.cgi?id=8848&action=edit
demo of thread acting on cancellation request while terminating
Returning from a thread should behave as calling pthread_exit(), and XSH 2.95,
under the epigraph "Thread Cancellation Cleanup Handlers" requires
pthread_exit() to set the cancellation state and type to disabled and deferred,
respectively.
The attached program is supposed to endlessly loop creating an asynchronously
cancellable thread, and then cancelling and joining it. Instead of that, after
a while, the program exits. This does not happen if the created thread calls
pthread_exit() instead of returning.
Setting the cancellation state and type to disabled and deferred in
nptl/pthread_create.c:START_THREAD_DEFN after returning from/long jumping out
of start_routine fixes this test case. This fix is similar to one in musl
(http://git.musl-libc.org/cgit/musl/commit/?id=36d8e972231c397194e513691d09f7d489de0a62),
the test program deadlocks in musl prior to that commit.
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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19367] New: Improve branch prediction on Silvermont
Date: Tue, 15 Dec 2015 21:15:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19367
Bug ID: 19367
Summary: Improve branch prediction on Silvermont
Product: glibc
Version: 2.23
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
Intel Silvermont optimization guide says
---
Another important performance consideration from a front end standpoint is
branch prediction. For 64-bit applications, branch prediction performance
can be negatively impacted when the target of a branch is more than 4GB away
from the branch. This is more likely to happen when the application is split
into shared libraries. Developers can build statically to improve the locality
in their code. Building with LTO should further improve performance.
---
We should try to mmap executable pages in shared libraries with
MAP_32BIT first to improve branch prediction performance on Silvermont.
Prefer_MAP_32BIT_EXEC reduces bits available for address space layout
randomization (ASLR), which should be always disabled for SUID programs
and should only be enabled by setting environment variable,
LD_PREFER_MAP_32BIT_EXEC.
NB: MAP_32BIT will map to lower 2GB, not lower 4GB, address.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19367] Improve branch prediction on Silvermont
Date: Tue, 15 Dec 2015 21:29:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19367
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via b9eb92ab05204df772eb4929eccd018637c9f3e9 (commit)
from c9afcaaafaf9126a973883528eed8d0058a264c0 (commit)
Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b9eb92ab05204df772eb4929eccd018637c9f3e9
commit b9eb92ab05204df772eb4929eccd018637c9f3e9
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Oct 21 14:44:23 2015 -0700
Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT
According to Silvermont software optimization guide, for 64-bit
applications, branch prediction performance can be negatively impacted
when the target of a branch is more than 4GB away from the branch. Add
the Prefer_MAP_32BIT_EXEC bit so that mmap will try to map executable
pages with MAP_32BIT first. NB: MAP_32BIT will map to lower 2GB, not
lower 4GB, address. Prefer_MAP_32BIT_EXEC reduces bits available for
address space layout randomization (ASLR), which is always disabled for
SUID programs and can only be enabled by setting environment variable,
LD_PREFER_MAP_32BIT_EXEC.
On Fedora 23, this patch speeds up GCC 5 testsuite by 3% on Silvermont.
[BZ #19367]
* sysdeps/unix/sysv/linux/wordsize-64/mmap.c: New file.
* sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/mmap.c: Likewise.
* sysdeps/x86/cpu-features.h (bit_Prefer_MAP_32BIT_EXEC): New.
(index_Prefer_MAP_32BIT_EXEC): Likewise.
-----------------------------------------------------------------------
Summary of changes:
sysdeps/unix/sysv/linux/wordsize-64/mmap.c | 40 ++++++++++++++++++++
sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h | 44 +++++++++++++++++++++++
sysdeps/unix/sysv/linux/x86_64/64/mmap.c | 37 +++++++++++++++++++
sysdeps/x86/cpu-features.h | 3 ++
4 files changed, 124 insertions(+), 0 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/wordsize-64/mmap.c
create mode 100644 sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h
create mode 100644 sysdeps/unix/sysv/linux/x86_64/64/mmap.c
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>From glibc-bugs-return-30689-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 15 21:33:15 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19367] Improve branch prediction on Silvermont
Date: Tue, 15 Dec 2015 21:33:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19367
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for 2.23.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19367] Improve branch prediction on Silvermont
Date: Tue, 15 Dec 2015 21:46:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19367
--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, hjl/32bit/2.22 has been created
at e4c29a1d3f7d96683582b7dbd86fb8d1ac707ea6 (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e4c29a1d3f7d96683582b7dbd86fb8d1ac707ea6
commit e4c29a1d3f7d96683582b7dbd86fb8d1ac707ea6
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Oct 21 14:44:23 2015 -0700
Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT
According to Silvermont software optimization guide, for 64-bit
applications, branch prediction performance can be negatively impacted
when the target of a branch is more than 4GB away from the branch. Add
the Prefer_MAP_32BIT_EXEC bit so that mmap will try to map executable
pages with MAP_32BIT first. NB: MAP_32BIT will map to lower 2GB, not
lower 4GB, address. Prefer_MAP_32BIT_EXEC reduces bits available for
address space layout randomization (ASLR), which is always disabled for
SUID programs and can only be enabled by setting environment variable,
LD_PREFER_MAP_32BIT_EXEC.
On Fedora 23, this patch speeds up GCC 5 testsuite by 3% on Silvermont.
[BZ #19367]
* sysdeps/unix/sysv/linux/wordsize-64/mmap.c: New file.
* sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/mmap.c: Likewise.
* sysdeps/x86/cpu-features.h (bit_Prefer_MAP_32BIT_EXEC): New.
(index_Prefer_MAP_32BIT_EXEC): Likewise.
(cherry picked from commit b9eb92ab05204df772eb4929eccd018637c9f3e9)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e7b516ad591913995b928ce6db296e2c57a099e4
commit e7b516ad591913995b928ce6db296e2c57a099e4
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Dec 15 11:46:54 2015 -0800
Enable Silvermont optimizations for Knights Landing
Knights Landing processor is based on Silvermont. This patch enables
Silvermont optimizations for Knights Landing.
* sysdeps/x86/cpu-features.c (init_cpu_features): Enable
Silvermont optimizations for Knights Landing.
(cherry picked from commit c9afcaaafaf9126a973883528eed8d0058a264c0)
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>From glibc-bugs-return-30691-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 16 11:38:01 2015
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From: "rob at robwu dot nl" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/19369] New: Default domain name not reset by res_ninit when "search" / "domain" entry is removed from resolv.conf
Date: Wed, 16 Dec 2015 11:38:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19369
Bug ID: 19369
Summary: Default domain name not reset by res_ninit when
"search" / "domain" entry is removed from resolv.conf
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: network
Assignee: rob at robwu dot nl
Reporter: rob at robwu dot nl
Target Milestone: ---
Created attachment 8850
--> https://sourceware.org/bugzilla/attachment.cgi?id=8850&action=edit
Repeatedly uses res_ninit, getaddrinfo, res_nclose.
When I call res_ninit(&_res), I expect resolver functions such as getaddrinfo
to use exactly the same configuration as if the program was run for the first
time (which then uses /etc/resolv.conf).
This is not the case for the "search" (or "domain") entries. When the "domain"
entry is removed, the resolver still uses the previously configured domain
name.
Steps to reproduce:
1. Compile the attached program (gcc -Wall getaddr.c). This program repeatedly
calls res_ninit, getaddrinfo("www", ...), res_nclose.
2. Edit /etc/resolv.conf, add "search example.com"
3. Run ./a.out www
4. Edit /etc/resolv.conf, remove "search example.com"
5. Run ./a.out www
Expected results:
At step 3, the following is output (because "www" -> "www.example.com", which
exists).
getaddrinfo("www") = 0
93.184.216.34:0
At step 5, the following should be output (or anything else that is not
"www.example.com", -2 = EAI_NONAME):
getaddrinfo("www") = -2
Actual results:
At step 5, the same result as step 3 is shown, which indicates that the default
domain suffix is not reset.
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>From glibc-bugs-return-30692-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 16 11:46:49 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug malloc/19243] reused_arena can pick an arena on the free list, leading to an assertion failure and reference count corruption
Date: Wed, 16 Dec 2015 11:46:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3da825ce483903e3a881a016113b3e59fd4041de
commit 3da825ce483903e3a881a016113b3e59fd4041de
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Dec 16 12:39:48 2015 +0100
malloc: Fix attached thread reference count handling [BZ #19243]
reused_arena can increase the attached thread count of arenas on the
free list. This means that the assertion that the reference count is
zero is incorrect. In this case, the reference count initialization
is incorrect as well and could cause arenas to be put on the free
list too early (while they still have attached threads).
* malloc/arena.c (get_free_list): Remove assert and adjust
reference count handling. Add comment about reused_arena
interaction.
(reused_arena): Add comments abount get_free_list interaction.
* malloc/tst-malloc-thread-exit.c: New file.
* malloc/Makefile (tests): Add tst-malloc-thread-exit.
(tst-malloc-thread-exit): Link against libpthread.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 11 ++
malloc/Makefile | 4 +-
malloc/arena.c | 12 ++-
malloc/tst-malloc-thread-exit.c | 217 +++++++++++++++++++++++++++++++++++++++
4 files changed, 239 insertions(+), 5 deletions(-)
create mode 100644 malloc/tst-malloc-thread-exit.c
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To: glibc-bugs@sourceware.org
Subject: [Bug malloc/19243] reused_arena can pick an arena on the free list, leading to an assertion failure and reference count corruption
Date: Wed, 16 Dec 2015 11:47:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for 2.23.
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>From glibc-bugs-return-30694-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 16 13:47:33 2015
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Wed, 16 Dec 2015 13:47:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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The branch, hjl/pr19363/master has been created
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4c0dfefbdf950080746e48f6f95f449922bb5d0c
commit 4c0dfefbdf950080746e48f6f95f449922bb5d0c
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Dec 14 19:09:13 2015 -0800
Use INTERNAL_SYSCALL_TIMES* macros for Linux times
The Linux times function, which returns clock_t, is implemented with
INTERNAL_SYSCALL_DECL, INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P and
INTERNAL_SYSCALL_ERRNO. Since INTERNAL_SYSCALL* macros use 32-bit
integer and clock_t is 64-bit on x32, this is a mismatch on x32. All
system calls returning 64-bit integer, which are lseek, time and times,
must be handled specially for x32. lseek is handled by x32 lseek.S and
time doesn't check syscall return. times is the only missed one.
This patch replaces INTERNAL_SYSCALL* macros in Linux times.c with
INTERNAL_SYSCALL_TIMES* macros which are default to INTERNAL_SYSCALL*
macros and provides x32 times.c with proper INTERNAL_SYSCALL_TIMES*
macros.
There is no code change on times for i686 nor x86-64. For x32, before
this patch, there are
0000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 63 d0 movslq %eax,%rdx
^^^^^^^^^^ Incorrect signed extension
a: 48 83 fa f2 cmp $0xfffffffffffffff2,%rdx
e: 75 07 jne 17 <__times+0x17>
10: 3d 00 f0 ff ff cmp $0xfffff000,%eax
^^^^^^^^^^^^^^^^^^^^^ 32-bit compare
15: 77 11 ja 28 <__times+0x28>
17: 48 83 fa ff cmp $0xffffffffffffffff,%rdx
1b: b8 00 00 00 00 mov $0x0,%eax
20: 48 0f 45 c2 cmovne %rdx,%rax
24: c3 retq
After this patch, there are
00000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 83 f8 f2 cmp $0xfffffffffffffff2,%rax
b: 75 08 jne 15 <__times+0x15>
d: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
13: 77 13 ja 28 <__times+0x28>
15: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
19: ba 00 00 00 00 mov $0x0,%edx
1e: 48 0f 44 c2 cmove %rdx,%rax
22: c3 retq
The incorrect signed extension and 32-bit compare are gone.
[BZ #19363]
* sysdeps/unix/sysv/linux/times.c (INTERNAL_SYSCALL_TIMES_DECL):
New.
(INTERNAL_SYSCALL_TIMES): Likewise.
(INTERNAL_SYSCALL_TIMES_ERROR_P): Likewise.
(INTERNAL_SYSCALL_TIMES_ERRNO): Likewise.
(__times): Replace INTERNAL_SYSCALL* macros with
INTERNAL_SYSCALL_TIMES* macros.
* sysdeps/unix/sysv/linux/x86_64/x32/times.c: New file.
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Subject: [Bug libc/19371] New: Wrong error return on syscall ()
Date: Wed, 16 Dec 2015 14:35:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19371
Bug ID: 19371
Summary: Wrong error return on syscall ()
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Target: x32
X32 has
(gdb) disass syscall
Dump of assembler code for function syscall:
0x000daaf0 <+0>: mov %rdi,%rax
0x000daaf3 <+3>: mov %rsi,%rdi
0x000daaf6 <+6>: mov %rdx,%rsi
0x000daaf9 <+9>: mov %rcx,%rdx
0x000daafc <+12>: mov %r8,%r10
0x000daaff <+15>: mov %r9,%r8
0x000dab02 <+18>: mov 0x8(%rsp),%r9
0x000dab07 <+23>: syscall
0x000dab09 <+25>: cmp $0xfffffffffffff001,%rax
0x000dab0f <+31>: jae 0xdab12 <syscall+34>
0x000dab11 <+33>: retq
0x000dab12 <+34>: mov 0x2b3397(%rip),%rcx # 0x38deb0
0x000dab19 <+41>: neg %eax
0x000dab1b <+43>: mov %eax,%fs:(%rcx)
0x000dab1e <+46>: or $0xffffffff,%eax
^^^^^^^^^^^^^^^^^ It should be 64-bit.
0x000dab21 <+49>: retq
End of assembler dump.
(gdb)
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Subject: [Bug libc/19371] Wrong error return on syscall ()
Date: Wed, 16 Dec 2015 14:40:00 -0000
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Also "extern int" in
extern long int syscall (long int __sysno, ...) __THROW;
should be replaced by __syscall_slong_t.
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Subject: [Bug libc/19371] Wrong error return on syscall ()
Date: Wed, 16 Dec 2015 14:58:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, hjl/pr19371/master has been created
at bf0e161423748feb7950110d6074ebbcd102cb7e (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bf0e161423748feb7950110d6074ebbcd102cb7e
commit bf0e161423748feb7950110d6074ebbcd102cb7e
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Dec 16 06:50:42 2015 -0800
Properly handle x32 syscall
X32 syscall() may return 64-bit integer as lseek, time and times. Its
return type should be __syscall_slong_t instead of long int. We need
to properly return 64-bit error value.
Before the patch:
Dump of assembler code for function syscall:
0x000dab20 <+0>: mov %rdi,%rax
0x000dab23 <+3>: mov %rsi,%rdi
0x000dab26 <+6>: mov %rdx,%rsi
0x000dab29 <+9>: mov %rcx,%rdx
0x000dab2c <+12>: mov %r8,%r10
0x000dab2f <+15>: mov %r9,%r8
0x000dab32 <+18>: mov 0x8(%rsp),%r9
0x000dab37 <+23>: syscall
0x000dab39 <+25>: cmp $0xfffffffffffff001,%rax
0x000dab3f <+31>: jae 0xdab42 <syscall+34>
0x000dab41 <+33>: retq
0x000dab42 <+34>: mov 0x2b3367(%rip),%rcx # 0x38deb0
0x000dab49 <+41>: neg %eax
0x000dab4b <+43>: mov %eax,%fs:(%rcx)
0x000dab4e <+46>: or $0xffffffff,%eax
^^^^^^^^^^^^^^^^^^ This is 32-bit error return.
0x000dab51 <+49>: retq
End of assembler dump.
After the patch:
Dump of assembler code for function syscall:
0x000daaf0 <+0>: mov %rdi,%rax
0x000daaf3 <+3>: mov %rsi,%rdi
0x000daaf6 <+6>: mov %rdx,%rsi
0x000daaf9 <+9>: mov %rcx,%rdx
0x000daafc <+12>: mov %r8,%r10
0x000daaff <+15>: mov %r9,%r8
0x000dab02 <+18>: mov 0x8(%rsp),%r9
0x000dab07 <+23>: syscall
0x000dab09 <+25>: cmp $0xfffffffffffff001,%rax
0x000dab0f <+31>: jae 0xdab12 <syscall+34>
0x000dab11 <+33>: retq
0x000dab12 <+34>: mov 0x2b3397(%rip),%rcx # 0x38deb0
0x000dab19 <+41>: neg %eax
0x000dab1b <+43>: mov %eax,%fs:(%rcx)
0x000dab1e <+46>: or $0xffffffffffffffff,%rax
0x000dab22 <+50>: retq
End of assembler dump.
[BZ #19371]
* posix/unistd.h (syscall): Use __syscall_slong_t for return
type.
* sysdeps/unix/sysv/linux/x86_64/x32/syscall.S: New file.
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>From glibc-bugs-return-30698-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 16 19:40:44 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/11787] Program with large TLS segments fail.
Date: Wed, 16 Dec 2015 19:40:00 -0000
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Steven Schlansker <stevenschlansker at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |stevenschlansker at gmail dot com
--- Comment #43 from Steven Schlansker <stevenschlansker at gmail dot com> ---
The JVM is having trouble too, see the following core-libs-dev discussion:
http://mail.openjdk.java.net/pipermail/core-libs-dev/2015-December/037557.html
If you link the JVM as a library and use thread local storage, it is very hard
for JVM internal threads to ensure that their stack is usable.
>From the Rust discussion, they link that the Go runtime had the exact same
problem.
How many languages are going to have to work around this broken behavior before
there is a glibc fix? :(
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/11787] Program with large TLS segments fail.
Date: Wed, 16 Dec 2015 20:22:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
--- Comment #44 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Steven Schlansker from comment #43)
> The JVM is having trouble too, see the following core-libs-dev discussion:
>
> http://mail.openjdk.java.net/pipermail/core-libs-dev/2015-December/037557.
> html
>
> If you link the JVM as a library and use thread local storage, it is very
> hard for JVM internal threads to ensure that their stack is usable.
>
> From the Rust discussion, they link that the Go runtime had the exact same
> problem.
>
> How many languages are going to have to work around this broken behavior
> before there is a glibc fix? :(
I have not been working on a fix for this because of other priorities. Sorry
about that. We need to see submissions like this to raise the priority of a
given issue beyond just that of chrome having problems in certain scenarios.
Seeing that Rust and Java are both having problems means we should do something
about this. It has been 5 years since we discovered the issue, but like all
things it's not trivial and we need to rewrite the NPTL stack layout code.
I'm moving this back to NEW for now since I'm not going to work on it, but I'll
see what we can do internally at Red Hat to prioritize this.
As always "Patches welcome", but I understand that the code in question that
needs to be changed is very very hairy, and requires a senior community
developer to make or review the changes.
Thanks again for raising the visibility.
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nss/18991] nss_files skips large entry in database
Date: Thu, 17 Dec 2015 12:19:00 -0000
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--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
Created attachment 8854
--> https://sourceware.org/bugzilla/attachment.cgi?id=8854&action=edit
Patch with nss_files tests, one of which triggers bug 18991
I used the attached collections of tests to reproduce this issue.
I tried to fix this using getline, but the whole thing turns very involved
because the existing code assumes that line read from the file is dissected in
place. There is no place to manage the memory for the buffer, so it would
always have to be copied into the caller-supplied buffer. It also does not
help that a match can only be checked after the line has been parsed
completely.
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19375] New: powerpc: incorrect results for POWER7 logb with negative subnormals
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https://sourceware.org/bugzilla/show_bug.cgi?id=19375
Bug ID: 19375
Summary: powerpc: incorrect results for POWER7 logb with
negative subnormals
Product: glibc
Version: 2.23
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: adhemerval.zanella at linaro dot org
Target Milestone: ---
The 'math/test-double' and 'math/test-double-finite' are both failing on POWER7
or newer machine with:
testing double (finite-math-only)
Failure: Test: logb (-min_subnorm_value)
Result:
is: -1.0110000000000000e+03 -0x1.f980000000000p+9
should be: -1.0740000000000000e+03 -0x1.0c80000000000p+10
difference: 6.3000000000000000e+01 0x1.f800000000000p+5
ulp : 277076930199552.0000
max.ulp : 0.0000
Failure: Test: logb_downward (-min_subnorm_value)
Result:
is: -1.0110000000000000e+03 -0x1.f980000000000p+9
should be: -1.0740000000000000e+03 -0x1.0c80000000000p+10
difference: 6.3000000000000000e+01 0x1.f800000000000p+5
ulp : 277076930199552.0000
max.ulp : 0.0000
Failure: Test: logb_towardzero (-min_subnorm_value)
Result:
is: -1.0110000000000000e+03 -0x1.f980000000000p+9
should be: -1.0740000000000000e+03 -0x1.0c80000000000p+10
difference: 6.3000000000000000e+01 0x1.f800000000000p+5
ulp : 277076930199552.0000
max.ulp : 0.0000
Failure: Test: logb_upward (-min_subnorm_value)
Result:
is: -1.0110000000000000e+03 -0x1.f980000000000p+9
should be: -1.0740000000000000e+03 -0x1.0c80000000000p+10
difference: 6.3000000000000000e+01 0x1.f800000000000p+5
ulp : 277076930199552.0000
max.ulp : 0.0000
This is due a issue on 'sysdeps/powerpc/power7/fpu/s_logb.c' for handling
subnormal negative numbers (it does not clear the sign bit before issue the
leading 0-bits builtin).
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Subject: [Bug math/19375] powerpc: incorrect results for POWER7 logb with negative subnormals
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2094350c9c9c1b87cf34b193ad6541e4a29b62dc
commit 2094350c9c9c1b87cf34b193ad6541e4a29b62dc
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu Dec 17 12:34:57 2015 -0200
Fix POWER7 logb results for negative subnormals (bug 19375)
The optimized POWER7 logb implementation does not use the absolute
value of the word extracted from the input to apply the leading 0-bits
builtin (to ignore the float sign). This patch fixes it by
clearing the signal bit in the resulting word.
It fixes the subnormal tests failures when running on POWER7 ou
newer chip.
Tested on powerpc64le (POWER8).
[BZ# 19375]
* sysdeps/powerpc/power7/fpu/s_logb.c (__logb): Fix return for
negative subnormals.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
sysdeps/powerpc/power7/fpu/s_logb.c | 1 +
2 files changed, 6 insertions(+), 0 deletions(-)
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Subject: [Bug math/19375] powerpc: incorrect results for POWER7 logb with negative subnormals
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed by 2094350c9c9c1b87cf34b193ad6541e4a29b62dc.
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Subject: [Bug math/19375] powerpc: incorrect results for POWER7 logb with negative subnormals
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----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |adhemerval.zanella at linaro dot o
| |rg
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Subject: [Bug math/19375] powerpc: incorrect results for POWER7 logb with negative subnormals
Date: Thu, 17 Dec 2015 16:59:00 -0000
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--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
You need to set the milestone when marking a bug fixed.
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Subject: [Bug math/19375] powerpc: incorrect results for POWER7 logb with negative subnormals
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----------------------------------------------------------------------------
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Subject: [Bug math/19375] powerpc: incorrect results for POWER7 logb with negative subnormals
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--- Comment #4 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
My mistake, it is done now.
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commit cd51b1424477652cccdb83e7a95644d198fd4513
Author: Paul Murphy <murphyp@linux.vnet.ibm.com>
Date: Thu Aug 27 09:48:04 2015 -0500
powerpc: Fix usage of elision transient failure adapt param
The skip_lock_out_of_tbegin_retries adaptive parameter was
not being used correctly, nor as described. This prevents
a fallback for all users of the lock if a transient abort
occurs within the accepted number of retries.
[BZ #19174]
* sysdeps/powerpc/nptl/elide.h (__elide_lock): Fix usage of
.skip_lock_out_of_tbegin_retries.
* sysdeps/unix/sysv/linux/powerpc/elision-lock.c
(__lll_lock_elision): Likewise, and respect a value of
try_tbegin <= 0.
(cherry picked from commit 72f1463df85a522bfd1568e47bd81371522ee358)
Conflicts:
NEWS
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
NEWS | 2 +-
sysdeps/powerpc/nptl/elide.h | 6 +++---
sysdeps/unix/sysv/linux/powerpc/elision-lock.c | 15 ++++++---------
4 files changed, 19 insertions(+), 13 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Thu, 17 Dec 2015 19:49:00 -0000
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 8ead7a9b94a085e6fba69b8b22e2ba0e2677f0d5 (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8ead7a9b94a085e6fba69b8b22e2ba0e2677f0d5
commit 8ead7a9b94a085e6fba69b8b22e2ba0e2677f0d5
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Dec 17 11:46:49 2015 -0800
Provide x32 times
Since times returns 64-bit clock_t on x32, we need to provide x32 times
by redefining INTERNAL_SYSCALL_NCS and INTERNAL_SYSCALL_ERROR_P with
64-bit return type for syscall. All system calls returning 64-bit
integer, which are lseek, time and times, must be handled specially for
x32. lseek is handled by x32 lseek.S and time doesn't check syscall
return. times is the only missed one. Before this patch, there are
0000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 63 d0 movslq %eax,%rdx
^^^^^^^^^^ Incorrect signed extension
a: 48 83 fa f2 cmp $0xfffffffffffffff2,%rdx
e: 75 07 jne 17 <__times+0x17>
10: 3d 00 f0 ff ff cmp $0xfffff000,%eax
^^^^^^^^^^^^^^^^^^^^^ 32-bit compare
15: 77 11 ja 28 <__times+0x28>
17: 48 83 fa ff cmp $0xffffffffffffffff,%rdx
1b: b8 00 00 00 00 mov $0x0,%eax
20: 48 0f 45 c2 cmovne %rdx,%rax
24: c3 retq
After this patch, there are
00000000 <__times>:
0: b8 64 00 00 40 mov $0x40000064,%eax
5: 0f 05 syscall
7: 48 83 f8 f2 cmp $0xfffffffffffffff2,%rax
b: 75 08 jne 15 <__times+0x15>
d: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
13: 77 13 ja 28 <__times+0x28>
15: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
19: ba 00 00 00 00 mov $0x0,%edx
1e: 48 0f 44 c2 cmove %rdx,%rax
22: c3 retq
The incorrect signed extension and 32-bit compare are gone.
[BZ #19363]
* sysdeps/unix/sysv/linux/x86_64/x32/times.c: New file.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 ++
.../sysv/linux/x86_64/x32/times.c} | 40 +++++++++----------
2 files changed, 24 insertions(+), 21 deletions(-)
copy sysdeps/{powerpc/powerpc64/multiarch/stpcpy-power8.S =>
unix/sysv/linux/x86_64/x32/times.c} (53%)
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Subject: [Bug time/19363] x32: times() return value wrongly truncates/sign extends from 32bit
Date: Thu, 17 Dec 2015 19:50:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
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>From glibc-bugs-return-30711-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 18 09:26:19 2015
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From: "t.rus76 at ya dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug regex/19376] New: regcomp.c needs to be upgraded to GNU Grep's one
Date: Fri, 18 Dec 2015 09:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19376
Bug ID: 19376
Summary: regcomp.c needs to be upgraded to GNU Grep's one
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: regex
Assignee: unassigned at sourceware dot org
Reporter: t.rus76 at ya dot ru
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Symptom: GNU Grep does not handle Syriac characters (U+0700 – U+074F) correctly
$ echo 'ܫܠܡܐ' > peace
$ egrep '\<[ܐ-ܬ]' peace
grep: Invalid collation character
$ awk /'\<[ܐ-ܬ]'/ peace
ܫܠܡܐ
However when grep is build with ./configure --with-included-regex
it works just fine and there is no REG_ECOLLATE error
$ echo ܫܠܡܐ | src/egrep [ܫ-ܬ]
ܫܠܡܐ
$ echo ܫܠܡܐ | src/egrep [ܒ-ܓ]
$
This is because GNU Grep contains improved version of regcomp.
The bus was found here:
http://forum.rosalab.ru/viewtopic.php?f=53&t=6219&p=54747 (in Russian)
It is tested and confirmed also on Gentoo (both glibc and grep are 2.22).
I expect there are other bugs that could be fixed with this upgrade.
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From: "bonzini at gnu dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/19376] regex reports "Invalid collation character" for Syriac characters
Date: Fri, 18 Dec 2015 12:27:00 -0000
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Paolo Bonzini <bonzini at gnu dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bonzini at gnu dot org,
| |libc-locales at sourceware dot org
Component|regex |localedata
Summary|regcomp.c needs to be |regex reports "Invalid
|upgraded to GNU Grep's one |collation character" for
| |Syriac characters
--- Comment #1 from Paolo Bonzini <bonzini at gnu dot org> ---
This seems like a bug in the locale definitions (similar to the infamous "[A-Z]
matches some lowercase characters one), not in regex.
What is your locale?
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From: "t.rus76 at ya dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/19376] regex reports "Invalid collation character" for Syriac characters
Date: Fri, 18 Dec 2015 15:05:00 -0000
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--- Comment #2 from t.rus76 at ya dot ru ---
My locale is ru_RU.UTF-8
Yes, I have got the same idea at the beginning.
with LC_CTYPE=en_GB there was no error
but with LC_ALL=en_US.UTF-8 the bug appeared.
Next step I found there are two files regcomp.c in both Glibc and Grep.
I have compared them with Diff. They are very similar, but not exactly.
The one from Grep is obviously newer. But for some reason grep links with glibc
by deafult.
./configure --with-included-regex enforces linking with newer buildin version.
Then it works flawlessly with the same locale.
I am not a native English speaker and hope my explanation are clear enough.
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Subject: [Bug localedata/19376] regex reports "Invalid collation character" for Syriac characters
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--- Comment #3 from Paolo Bonzini <bonzini at gnu dot org> ---
It works flawlessly because it bypasses the localedata. That's why I moved the
bug to localedata. :)
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Subject: [Bug localedata/19376] regex reports "Invalid collation character" for Syriac characters
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Paolo Bonzini from comment #3)
> It works flawlessly because it bypasses the localedata. That's why I moved
> the bug to localedata. :)
Well the localedata is updated as much as possible and we're on Unicode 8.0.0
right now for UTF-8 charsets.
How might we determine exactly what's wrong?
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--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Fri, 18 Dec 2015, carlos at redhat dot com wrote:
> Well the localedata is updated as much as possible and we're on Unicode 8.0.0
> right now for UTF-8 charsets.
Collation, however, is much more out of date (and probably harder to
correlate with Unicode so we can make sure we're not losing desirable
local changes if we update it). See bug 14095.
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/19376] regex reports "Invalid collation character" for Syriac characters
Date: Fri, 18 Dec 2015 16:41:00 -0000
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--- Comment #6 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to joseph@codesourcery.com from comment #5)
> On Fri, 18 Dec 2015, carlos at redhat dot com wrote:
>
> > Well the localedata is updated as much as possible and we're on Unicode 8.0.0
> > right now for UTF-8 charsets.
>
> Collation, however, is much more out of date (and probably harder to
> correlate with Unicode so we can make sure we're not losing desirable
> local changes if we update it). See bug 14095.
Correct, so if it's a collation issue, likely maybe, then it would be good to
find a reproducer that shows via strlcoll the problem with Syriac characters.
Until then an english speaking developer is going to have a hard time figuring
this out, or the issue will go away once we start automating the collation data
updates also (which should be our plan).
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Subject: [Bug math/19380] New: strtod does not raise "inexact"
Date: Sat, 19 Dec 2015 16:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19380
Bug ID: 19380
Summary: strtod does not raise "inexact"
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
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When the result of strtod (on an argument such as "0.1") is inexact, strtod
should raise the "inexact" exception, but fails to do so except in the case of
underflow or overflow.
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Subject: [Bug manual/13792] Which license applies to the code examples in the manual?
Date: Sat, 19 Dec 2015 17:00:00 -0000
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Alex Vong <alexvong1995 at gmail dot com> changed:
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CC| |alexvong1995 at gmail dot com
--- Comment #6 from Alex Vong <alexvong1995 at gmail dot com> ---
Hi glibc developers,
Can you please also release this piece of example code
<https://www.gnu.org/software/libc/manual/html_mono/libc.html#Wordexp-Example>
under GPLv2+? I am fixing some code and the example does exactly what I need.
Thank you!
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Subject: [Bug nscd/16760] Overlapping source and destination in calls to stpcpy from nscd
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b963026c07a304bcfcf56ad5ee9b4f0797c7d3df
commit b963026c07a304bcfcf56ad5ee9b4f0797c7d3df
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu Mar 27 19:48:15 2014 +0530
Avoid overlapping addresses to stpcpy calls in nscd (BZ #16760)
Calls to stpcpy from nscd netgroups code will have overlapping source
and destination when all three values in the returned triplet are
non-NULL and in the expected (host,user,domain) order. This is seen
in valgrind as:
==3181== Source and destination overlap in stpcpy(0x19973b48, 0x19973b48)
==3181== at 0x4C2F30A: stpcpy (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==3181== by 0x12567A: addgetnetgrentX (string3.h:111)
==3181== by 0x12722D: addgetnetgrent (netgroupcache.c:665)
==3181== by 0x11114C: nscd_run_worker (connections.c:1338)
==3181== by 0x4E3C102: start_thread (pthread_create.c:309)
==3181== by 0x59B81AC: clone (clone.S:111)
==3181==
Fix this by using memmove instead of stpcpy.
(cherry picked from commit ea7d8b95e2fcb81f68b04ed7787a3dbda023991a)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=56b2cf5633f90c722b8f4ed257311b23ebed7399
commit 56b2cf5633f90c722b8f4ed257311b23ebed7399
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu Mar 27 19:49:51 2014 +0530
Return NULL for wildcard values in getnetgrent from nscd (BZ #16759)
getnetgrent is supposed to return NULL for values that are wildcards
in the (host, user, domain) triplet. This works correctly with nscd
disabled, but with it enabled, it returns a blank ("") instead of a
NULL. This is easily seen with the output of `getent netgroup foonet`
for a netgroup foonet defined as follows in /etc/netgroup:
foonet (,foo,)
The output with nscd disabled is:
foonet ( ,foo,)
while with nscd enabled, it is:
foonet (,foo,)
The extra space with nscd disabled is due to the fact that `getent
netgroup` adds it if the return value from getnetgrent is NULL for
either host or user.
(cherry picked from commit dd3022d75e6fb8957843d6d84257a5d8457822d5)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2f3bd411aefa9747f17740e9ab06676d51241098
commit 2f3bd411aefa9747f17740e9ab06676d51241098
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu Mar 27 07:15:22 2014 +0530
Fix nscd lookup for innetgr when netgroup has wildcards (BZ #16758)
nscd works correctly when the request in innetgr is a wildcard,
i.e. when one or more of host, user or domain parameters is NULL.
However, it does not work when the the triplet in the netgroup
definition has a wildcard. This is easy to reproduce for a triplet
defined as follows:
foonet (,foo,)
Here, an innetgr call that looks like this:
innetgr ("foonet", "foohost", "foo", NULL);
should succeed and so should:
innetgr ("foonet", NULL, "foo", "foodomain");
It does succeed with nscd disabled, but not with nscd enabled. This
fix adds this additional check for all three parts of the triplet so
that it gives the correct result.
[BZ #16758]
* nscd/netgroupcache.c (addinnetgrX): Succeed if triplet has
blank values.
(cherry picked from commit fbd6b5a4052316f7eb03c4617eebfaafc59dcc06)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 14 ++++++++++++++
NEWS | 7 ++++---
inet/getnetgrent_r.c | 14 +++++++++++---
nscd/netgroupcache.c | 26 +++++++++++++++++---------
4 files changed, 46 insertions(+), 15 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug nscd/16759] getnetgrent_r returns blank strings instead of NULL with nscd enabled
Date: Sun, 20 Dec 2015 17:56:00 -0000
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b963026c07a304bcfcf56ad5ee9b4f0797c7d3df
commit b963026c07a304bcfcf56ad5ee9b4f0797c7d3df
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu Mar 27 19:48:15 2014 +0530
Avoid overlapping addresses to stpcpy calls in nscd (BZ #16760)
Calls to stpcpy from nscd netgroups code will have overlapping source
and destination when all three values in the returned triplet are
non-NULL and in the expected (host,user,domain) order. This is seen
in valgrind as:
==3181== Source and destination overlap in stpcpy(0x19973b48, 0x19973b48)
==3181== at 0x4C2F30A: stpcpy (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==3181== by 0x12567A: addgetnetgrentX (string3.h:111)
==3181== by 0x12722D: addgetnetgrent (netgroupcache.c:665)
==3181== by 0x11114C: nscd_run_worker (connections.c:1338)
==3181== by 0x4E3C102: start_thread (pthread_create.c:309)
==3181== by 0x59B81AC: clone (clone.S:111)
==3181==
Fix this by using memmove instead of stpcpy.
(cherry picked from commit ea7d8b95e2fcb81f68b04ed7787a3dbda023991a)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=56b2cf5633f90c722b8f4ed257311b23ebed7399
commit 56b2cf5633f90c722b8f4ed257311b23ebed7399
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu Mar 27 19:49:51 2014 +0530
Return NULL for wildcard values in getnetgrent from nscd (BZ #16759)
getnetgrent is supposed to return NULL for values that are wildcards
in the (host, user, domain) triplet. This works correctly with nscd
disabled, but with it enabled, it returns a blank ("") instead of a
NULL. This is easily seen with the output of `getent netgroup foonet`
for a netgroup foonet defined as follows in /etc/netgroup:
foonet (,foo,)
The output with nscd disabled is:
foonet ( ,foo,)
while with nscd enabled, it is:
foonet (,foo,)
The extra space with nscd disabled is due to the fact that `getent
netgroup` adds it if the return value from getnetgrent is NULL for
either host or user.
(cherry picked from commit dd3022d75e6fb8957843d6d84257a5d8457822d5)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2f3bd411aefa9747f17740e9ab06676d51241098
commit 2f3bd411aefa9747f17740e9ab06676d51241098
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu Mar 27 07:15:22 2014 +0530
Fix nscd lookup for innetgr when netgroup has wildcards (BZ #16758)
nscd works correctly when the request in innetgr is a wildcard,
i.e. when one or more of host, user or domain parameters is NULL.
However, it does not work when the the triplet in the netgroup
definition has a wildcard. This is easy to reproduce for a triplet
defined as follows:
foonet (,foo,)
Here, an innetgr call that looks like this:
innetgr ("foonet", "foohost", "foo", NULL);
should succeed and so should:
innetgr ("foonet", NULL, "foo", "foodomain");
It does succeed with nscd disabled, but not with nscd enabled. This
fix adds this additional check for all three parts of the triplet so
that it gives the correct result.
[BZ #16758]
* nscd/netgroupcache.c (addinnetgrX): Succeed if triplet has
blank values.
(cherry picked from commit fbd6b5a4052316f7eb03c4617eebfaafc59dcc06)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 14 ++++++++++++++
NEWS | 7 ++++---
inet/getnetgrent_r.c | 14 +++++++++++---
nscd/netgroupcache.c | 26 +++++++++++++++++---------
4 files changed, 46 insertions(+), 15 deletions(-)
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nscd/16758] nscd incorrectly returns failure for innetgr for netgroup entries with wildcards in them
Date: Sun, 20 Dec 2015 17:56:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=16758
--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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The branch, release/2.19/master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b963026c07a304bcfcf56ad5ee9b4f0797c7d3df
commit b963026c07a304bcfcf56ad5ee9b4f0797c7d3df
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu Mar 27 19:48:15 2014 +0530
Avoid overlapping addresses to stpcpy calls in nscd (BZ #16760)
Calls to stpcpy from nscd netgroups code will have overlapping source
and destination when all three values in the returned triplet are
non-NULL and in the expected (host,user,domain) order. This is seen
in valgrind as:
==3181== Source and destination overlap in stpcpy(0x19973b48, 0x19973b48)
==3181== at 0x4C2F30A: stpcpy (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==3181== by 0x12567A: addgetnetgrentX (string3.h:111)
==3181== by 0x12722D: addgetnetgrent (netgroupcache.c:665)
==3181== by 0x11114C: nscd_run_worker (connections.c:1338)
==3181== by 0x4E3C102: start_thread (pthread_create.c:309)
==3181== by 0x59B81AC: clone (clone.S:111)
==3181==
Fix this by using memmove instead of stpcpy.
(cherry picked from commit ea7d8b95e2fcb81f68b04ed7787a3dbda023991a)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=56b2cf5633f90c722b8f4ed257311b23ebed7399
commit 56b2cf5633f90c722b8f4ed257311b23ebed7399
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu Mar 27 19:49:51 2014 +0530
Return NULL for wildcard values in getnetgrent from nscd (BZ #16759)
getnetgrent is supposed to return NULL for values that are wildcards
in the (host, user, domain) triplet. This works correctly with nscd
disabled, but with it enabled, it returns a blank ("") instead of a
NULL. This is easily seen with the output of `getent netgroup foonet`
for a netgroup foonet defined as follows in /etc/netgroup:
foonet (,foo,)
The output with nscd disabled is:
foonet ( ,foo,)
while with nscd enabled, it is:
foonet (,foo,)
The extra space with nscd disabled is due to the fact that `getent
netgroup` adds it if the return value from getnetgrent is NULL for
either host or user.
(cherry picked from commit dd3022d75e6fb8957843d6d84257a5d8457822d5)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2f3bd411aefa9747f17740e9ab06676d51241098
commit 2f3bd411aefa9747f17740e9ab06676d51241098
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date: Thu Mar 27 07:15:22 2014 +0530
Fix nscd lookup for innetgr when netgroup has wildcards (BZ #16758)
nscd works correctly when the request in innetgr is a wildcard,
i.e. when one or more of host, user or domain parameters is NULL.
However, it does not work when the the triplet in the netgroup
definition has a wildcard. This is easy to reproduce for a triplet
defined as follows:
foonet (,foo,)
Here, an innetgr call that looks like this:
innetgr ("foonet", "foohost", "foo", NULL);
should succeed and so should:
innetgr ("foonet", NULL, "foo", "foodomain");
It does succeed with nscd disabled, but not with nscd enabled. This
fix adds this additional check for all three parts of the triplet so
that it gives the correct result.
[BZ #16758]
* nscd/netgroupcache.c (addinnetgrX): Succeed if triplet has
blank values.
(cherry picked from commit fbd6b5a4052316f7eb03c4617eebfaafc59dcc06)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 14 ++++++++++++++
NEWS | 7 ++++---
inet/getnetgrent_r.c | 14 +++++++++++---
nscd/netgroupcache.c | 26 +++++++++++++++++---------
4 files changed, 46 insertions(+), 15 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/19329] dl-tls.c assert failure at concurrent pthread_create and dlopen
Date: Mon, 21 Dec 2015 02:54:00 -0000
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>From glibc-bugs-return-30724-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 21 07:24:33 2015
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From: "kb9vqf at pearsoncomputing dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19384] New: Vector math library is only available for x86
Date: Mon, 21 Dec 2015 07:24:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19384
Bug ID: 19384
Summary: Vector math library is only available for x86
Product: glibc
Version: 2.24
Status: NEW
Severity: enhancement
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: kb9vqf at pearsoncomputing dot net
Target Milestone: ---
The new vector math library is only available for x86, which is increasingly a
hardware restricted platform. Please port the vector math library to ppc64el
(VMX/AltiVec).
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From: "dam+gnu at ktnx dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/19385] New: Time separator in bg_BG should be colon, not comma
Date: Mon, 21 Dec 2015 09:56:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19385
Bug ID: 19385
Summary: Time separator in bg_BG should be colon, not comma
Product: glibc
Version: 2.21
Status: NEW
Severity: normal
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: dam+gnu at ktnx dot net
CC: libc-locales at sourceware dot org
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Created attachment 8856
--> https://sourceware.org/bugzilla/attachment.cgi?id=8856&action=edit
Trivial patch
Initially reported for the Debian package in <https://bugs.debian.org/808143>.
The Debian maintainer asked to report it here after collecting some proof.
The time format specified in the bg_BG locale is:
$ locale -k t_fmt t_fmt_ampm date_fmt
t_fmt="%k,%M,%S"
t_fmt_ampm="%l,%M,%S"
date_fmt="%a %b %e %H:%M:%S %Z %Y"
t_fmt[_ampm] should use colons instead of commas, like date_fmt already does.
An example of the badly formatted time can be seen in empathy chat windows when
using 'Boxes' or 'Planet GNOME' themes.
Trivial patch attached.
Now about the rationale. The only official source is the "Official spelling
dictionary of the Bulgarian language, Prosveta 2012", which states there are
three ways to separate time components: comma, colon and dot. That same
dictionary doesn't say which one is preferred.
So I turned to the mailing list of the translators of free software in
Bulgarian. The consensus is that colon is the only separator that is widely
used in Bulgarian texts and everything else will just be confusing.
The discussion started at
<http://lists.ludost.net/pipermail/dict/2015-December/000538.html>. It is all
in Bulgarian, but I'll summarize opinions below:
* Alexander Shopov (the author of the current setting): "I always use a colon.
The comma is also used as a decimal sign and may lead to confusion. Is '10,25'
25 minutes after 10 o'clock or 10 hours and 25/100ths?".
* Mikhail Balabanov: "I also prefer the colon as most unambiguous and I think
most used variant of the officially allowed separators. The dot is also used
for dates and the comma for decimal numbers".
* Borislav Mitev: "+1 for the colon"
* Sah War: "The colon is the only right symbol."
My opinion is not there, but in case it is not obvious, I use comma when
translating and writing times, and expect that the locale uses it too.
There were no opinions against the change.
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19387] New: Integer overflow in memchr
Date: Mon, 21 Dec 2015 14:58:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19387
Bug ID: 19387
Summary: Integer overflow in memchr
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: cherepan at mccme dot ru
Target Milestone: ---
Flags: security+
On x86_64 (and other archs?), memchr in the following program fails to find the
searched character. The program prints "(nil)".
----------------------------------------------------------------------
#include <stdalign.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
int main()
{
alignas(64) char w[65] = {0}; /* all the array is filled with 0s */
/* we will search for a 1 */
w[64] = 1; /* placing a 1 right after the end of 64-byte block */
printf("%p\n", memchr(&w[63], 1, SIZE_MAX));
}
----------------------------------------------------------------------
The failing conditions:
- the address of the string (s) modulo 64 is in the range 49 .. 63;
- there is no searched char in the rest of the 64-byte block;
- the number (n) of bytes to search is in the range (size_t)-15 .. (size_t)-1;
- n + (uintptr_t)s % 16 overflows.
The implementation of memchr used on my machine is in sysdeps/x86_64/memchr.S:
----------------------------------------------------------------------
21 /* fast SSE2 version with using pmaxub and 64 byte loop */
22
23 .text
24 ENTRY(memchr)
25 movd %rsi, %xmm1
26 mov %rdi, %rcx
Move (uintptr_t)s into %rcx.
27
28 punpcklbw %xmm1, %xmm1
29 test %rdx, %rdx
30 jz L(return_null)
31 punpcklbw %xmm1, %xmm1
32
33 and $63, %rcx
Compute (uintptr_t)s % 64 in %rcx.
34 pshufd $0, %xmm1, %xmm1
35
36 cmp $48, %rcx
37 ja L(crosscache)
If (uintptr_t)s % 64 > 48 go to L(crosscache).
[skip]
55 .p2align 4
56 L(crosscache):
57 and $15, %rcx
Compute (uintptr_t)s % 16 in %rcx.
58 and $-16, %rdi
59 movdqa (%rdi), %xmm0
60
61 pcmpeqb %xmm1, %xmm0
62 /* Check if there is a match. */
63 pmovmskb %xmm0, %eax
64 /* Remove the leading bytes. */
65 sar %cl, %eax
66 test %eax, %eax
67 je L(unaligned_no_match)
No match in the unaligned part of the string, so go to L(unaligned_no_match).
[skip]
77 .p2align 4
78 L(unaligned_no_match):
79 add %rcx, %rdx
Add (uintptr_t)s % 16 to n in %rdx.
80 sub $16, %rdx
81 jbe L(return_null)
If n + (uintptr_t)s % 16 <= 16 return NULL.
----------------------------------------------------------------------
Checked on x86_64:
- git master (glibc-2.22-616-g5537f46) -- failed;
- Debian jessie (glibc 2.19-18+deb8u1) -- failed;
- Debian wheezy (eglibc 2.13-38+deb7u8) -- failed.
Checked on x86_64 with gcc -m32:
- Debian jessie (glibc 2.19-18+deb8u1) -- failed;
- Debian wheezy (eglibc 2.13-38+deb7u8) -- ok.
I didn't look into the details of 32-bit version.
Not finding a char can have evident security implications but using it with
n=SIZE_MAX seems rare hence filing it publicly.
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19384] Vector math library is only available for x86
Date: Mon, 21 Dec 2015 15:55:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Bugzilla is not appropriate for this sort of feature request. Please see:
https://sourceware.org/glibc/wiki/Contribution%20checklist
if you wish to submit a patch implementing this feature, or add general ideas
for non-bug enhancements to the todo list at:
https://sourceware.org/glibc/wiki/Development_Todo/Master#Power
(contact libc-alpha if you need someone to give write access to your wiki
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>From glibc-bugs-return-30728-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 21 16:30:42 2015
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Subject: [Bug malloc/19182] malloc deadlock between ptmalloc_lock_all and _int_new_arena
Date: Mon, 21 Dec 2015 16:30:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 90c400bd4904b0240a148f0b357a5cbc36179239 (commit)
from b300455644e2945da05eb49d12d3a037f1408be1 (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=90c400bd4904b0240a148f0b357a5cbc36179239
commit 90c400bd4904b0240a148f0b357a5cbc36179239
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Dec 21 16:42:46 2015 +0100
malloc: Fix list_lock/arena lock deadlock [BZ #19182]
* malloc/arena.c (list_lock): Document lock ordering requirements.
(free_list_lock): New lock.
(ptmalloc_lock_all): Comment on free_list_lock.
(ptmalloc_unlock_all2): Reinitialize free_list_lock.
(detach_arena): Update comment. free_list_lock is now needed.
(_int_new_arena): Use free_list_lock around detach_arena call.
Acquire arena lock after list_lock. Add comment, including FIXME
about incorrect synchronization.
(get_free_list): Switch to free_list_lock.
(reused_arena): Acquire free_list_lock around detach_arena call
and attached threads counter update. Add two FIXMEs about
incorrect synchronization.
(arena_thread_freeres): Switch to free_list_lock.
* malloc/malloc.c (struct malloc_state): Update comments to
mention free_list_lock.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 19 +++++++++++++++
malloc/arena.c | 66 ++++++++++++++++++++++++++++++++++++++++++------------
malloc/malloc.c | 6 ++--
3 files changed, 73 insertions(+), 18 deletions(-)
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>From glibc-bugs-return-30729-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 21 16:31:20 2015
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Subject: [Bug malloc/19182] malloc deadlock between ptmalloc_lock_all and _int_new_arena
Date: Mon, 21 Dec 2015 16:31:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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Target Milestone|--- |2.23
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.23.
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>From glibc-bugs-return-30730-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 21 18:19:23 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug math/19384] Vector math library is only available for x86
Date: Mon, 21 Dec 2015 18:19:00 -0000
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--- Comment #2 from Timothy Pearson <kb9vqf at pearsoncomputing dot net> ---
Yeah I'm not permitted to create a Wiki account apparently ("Surge
protection"?). At minimum the page at
https://sourceware.org/glibc/wiki/libmvec needs to be updated to clearly state
that libmec is x86 only.
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>From glibc-bugs-return-30731-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 21 18:58:50 2015
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Subject: [Bug math/19384] Vector math library is only available for x86
Date: Mon, 21 Dec 2015 18:58:00 -0000
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--- Comment #3 from Timothy Pearson <kb9vqf at pearsoncomputing dot net> ---
(In reply to Timothy Pearson from comment #2)
> Yeah I'm not permitted to create a Wiki account apparently ("Surge
> protection"?). At minimum the page at
> https://sourceware.org/glibc/wiki/libmvec needs to be updated to clearly
> state that libmec is x86 only.
Was able to work around it. Message sent to the list as well.
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>From glibc-bugs-return-30732-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 21 20:51:58 2015
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19390] New: Integer overflow in strncat
Date: Mon, 21 Dec 2015 20:51:00 -0000
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Bug ID: 19390
Summary: Integer overflow in strncat
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: cherepan at mccme dot ru
Target Milestone: ---
Flags: security+
Apparently, on x86_64 (and other archs?) the asm version of strncat has an
integer overflow similar to bug 19387.
sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S is used on my machine. I
didn't look into the details but it looks like strncat(s1, s2, n) misbehave
when n is near SIZE_MAX, strlen(s2) >= 34 and s2 has specific offset.
For example, the program:
----------------------------------------------------------------------
#include <stdint.h>
#include <stdalign.h>
#include <string.h>
#include <stdio.h>
int main()
{
alignas(64) char s[144];
memset(s, 1, sizeof s);
/* the first string... */
char *s1 = s; /* ...is at the start of the buffer */
s1[0] = 0; /* ...and is empty */
/* the second string... */
char *s2 = s + 95; /* ...starts as pos 95, */
memset(s2, 2, s + sizeof s - s2); /* ...filled with 2s for contrast */
s2[33] = 0; /* ...and has the length 33 */
printf("before:\n");
for (int i = 0; i < 50; i++)
printf("%x", (unsigned char)s[i]);
printf("...\n");
strncat(s1, s2, SIZE_MAX);
printf("after:\n");
for (int i = 0; i < 50; i++)
printf("%x", (unsigned char)s[i]);
printf("...\n");
printf("%-33s^\n", "the string should end here");
}
----------------------------------------------------------------------
outputs this:
----------------------------------------------------------------------
before:
01111111111111111111111111111111111111111111111111...
after:
22222222222222222222222222222222202222211111111111...
the string should end here ^
----------------------------------------------------------------------
Here, strncat put '\0' exactly where it should be but also copied 5 extra chars
from s2 into s1 after '\0'. In other cases it copies less chars than required.
Checked on x86_64:
- git master (glibc-2.22-616-g5537f46) -- failed;
- Debian jessie (glibc 2.19-18+deb8u1) -- failed;
- Debian wheezy (eglibc 2.13-38+deb7u8) -- ok.
Checked on x86_64 with gcc -m32:
- Debian jessie (glibc 2.19-18+deb8u1) -- failed;
- Debian wheezy (eglibc 2.13-38+deb7u8) -- ok.
I didn't look into the details of 32-bit version.
The bug can have evident security implications but using strncat with
n=SIZE_MAX seems rare hence filing it publicly.
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>From glibc-bugs-return-30733-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 21 21:10:03 2015
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From: "dam+gnu at ktnx dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/19385] Time separator in bg_BG should be colon, not comma
Date: Mon, 21 Dec 2015 21:10:00 -0000
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--- Comment #1 from Damyan Ivanov <dam+gnu at ktnx dot net> ---
> My opinion is not there, but in case it is not obvious, I use comma when
> translating and writing times, and expect that the locale uses it too.
>
> There were no opinions against the change.
Gah, I mean I use *colon* and there were no opinions against changing the
locale to use colon. Sorry about the confusion.
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>From glibc-bugs-return-30734-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 21 22:51:13 2015
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From: "pascal_cuoq at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19391] New: strnlen invokes UB by adding maxlen to str
Date: Mon, 21 Dec 2015 22:51:00 -0000
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Bug ID: 19391
Summary: strnlen invokes UB by adding maxlen to str
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: string
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Target Milestone: ---
Consider the function strnlen:
size_t strnlen (const char *str, size_t maxlen);
The POSIX standard does not mandate that maxlen bytes are valid to access from
the pointer str:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/strlen.html
The maxlen argument is used to limit the number of chars accessed (and the
length returned) but there is no constraint that all bytes between str + 0 and
str + maxlen - 1 are part of a same object.
When maxlen is larger than the number of bytes that are part of an object
including str, the addition str + maxlen invokes undefined behavior:
https://sourceware.org/git/?p=glibc.git;a=blob;f=string/strnlen.c;h=d2bb843fddbf93eebb857cd0896cb3441bafa431;hb=HEAD#l36
The comparison end_ptr < str is nonsensical: it is always false when the
pointer arithmetic str + maxlen is defined. An optimizing compiler is allowed
to treat this expression as false:
https://sourceware.org/git/?p=glibc.git;a=blob;f=string/strnlen.c;h=d2bb843fddbf93eebb857cd0896cb3441bafa431;hb=HEAD#l43
Glibc is only intended to be compiled with GCC. Unfortunately, it is GCC that
made headlines in 2008 for optimizing “end_ptr < str”-type pointer overflow
checks to false:
https://lwn.net/Articles/278137/
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>From glibc-bugs-return-30735-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 21 23:20:48 2015
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Subject: [Bug string/19391] strnlen invokes UB by adding maxlen to str
Date: Mon, 21 Dec 2015 23:20:00 -0000
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>From glibc-bugs-return-30736-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 22 18:14:22 2015
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From: "howey014 at umn dot edu" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug string/19390] Integer overflow in strncat
Date: Tue, 22 Dec 2015 18:14:00 -0000
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--- Comment #1 from howey014 at umn dot edu ---
I tried your code on ppc 32-bit, with glibc 2.20 as I didn't have 2.22
available.
$ file bug
bug: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not stripped
$ ./bug
before:
01111111111111111111111111111111111111111111111111...
after:
22222222222222222222222222222222201111111111111111...
the string should end here ^
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>From glibc-bugs-return-30737-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 23 00:05:26 2015
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Subject: [Bug stdio/17829] Incorrect handling of precision specifier in printf family
Date: Wed, 23 Dec 2015 00:05:00 -0000
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--- Comment #5 from Alexander Cherepanov <cherepan at mccme dot ru> ---
To add to two already mentioned problems (unnecessary malloc and fail for
INT_MAX):
C11 seems not to specify any limit for a precision and values larger than
INT_MAX could be useful. The variable for precision is declared as int[1] and
extracted from a format string as int with overflow control[2]. A larger type
like size_t and something like saturated processing of the number is a better
fit.
[1]
https://sourceware.org/git/?p=glibc.git;a=blob;f=stdio-common/vfprintf.c;h=ae0145295479d0da11ae6bd496bd7039546419de;hb=HEAD#l1359
[2]
https://sourceware.org/git/?p=glibc.git;a=blob;f=stdio-common/printf-parse.h;h=e9903549997b113c5a38be3c2a463c2d83954c51;hb=HEAD#l68
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>From glibc-bugs-return-30738-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 23 00:23:18 2015
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Subject: [Bug stdio/17829] Incorrect handling of precision specifier in printf family
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--- Comment #6 from Alexander Cherepanov <cherepan at mccme dot ru> ---
Created attachment 8862
--> https://sourceware.org/bugzilla/attachment.cgi?id=8862&action=edit
Fix computations for max precision in vfprintf
While the full fix requires some work allowing INT_MAX on 64-bit platforms
seems easy.
The computation of the amount of the required memory is done in size_t but the
check uses INT_MAX for some reason. Replacing it with SIZE_MAX looks like a
right thing.
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>From glibc-bugs-return-30739-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 23 06:14:22 2015
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From: "cvs268 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19390] Integer overflow in strncat
Date: Wed, 23 Dec 2015 06:14:00 -0000
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cvs268 <cvs268 at gmail dot com> changed:
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--- Comment #2 from cvs268 <cvs268 at gmail dot com> ---
Tried the sample-code on ARM (Cortex A9) running Ubuntu 12.04.
gcc 4.6.3 complained about missing stdalign.h.
So had to replace alignas(64) char s[144];
with __attribute__ ((aligned (64))) char s[144];
(hopefully the replacement works as intended.)
gcc test-strncat.c -std=c99 -o test-strncat
gcc --version
gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
file test-strncat
test-strncat: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically
linked (uses shared libs), for GNU/Linux 2.6.31,
BuildID[sha1]=0xb88137c1de1a1f534311ba81b1f403166b1091f1, not stripped
./test-strncat
before:
01111111111111111111111111111111111111111111111111...
after:
22222222222222222222222222222222201111111111111111...
the string should end here ^
So works properly, no issues, right?
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>From glibc-bugs-return-30740-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 23 10:05:28 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug string/19390] Integer overflow in strncat
Date: Wed, 23 Dec 2015 10:05:00 -0000
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--- Comment #3 from Xavier Roche <roche at httrack dot com> ---
Possible duplicate of BUG 17279
(https://sourceware.org/bugzilla/show_bug.cgi?id=17279)
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>From glibc-bugs-return-30741-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 23 14:59:43 2015
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/19398] New: linknamespace tests fail with massively parallel build
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Bug ID: 19398
Summary: linknamespace tests fail with massively parallel build
Product: glibc
Version: 2.23
Status: NEW
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
CC: carlos at redhat dot com
Target Milestone: ---
Flags: security-
On a large machine with 80 cores, 160 threads, and I get lots of failures like
this:
FAIL: conform/ISO/assert.h/linknamespace
FAIL: conform/ISO/ctype.h/linknamespace
FAIL: conform/ISO/errno.h/linknamespace
FAIL: conform/ISO/locale.h/linknamespace
conform/ISO/assert.h/linknamespace.out looks like this:
[initial] __assert_fail -> [libc.a(assert.o)] abort
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] calloc
[initial] __assert_fail -> [libc.a(assert.o)] __mmap -> [libc.a(mmap.o)]
__libc_errno -> [libc.a(errno.o)] errno
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)] fflush
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)]
fprintf
[initial] __assert_fail -> [libc.a(assert.o)] free
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)]
__libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres ->
[libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max ->
[libc.a(tzset.o)] __tzfile_compute -> [libc.a(tzfile.o)] fseek
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)] fwrite
[initial] __assert_fail -> [libc.a(assert.o)] _dl_pagesize ->
[libc.a(dl-support.o)] getenv
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)]
__libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres ->
[libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max ->
[libc.a(tzset.o)] _tmbuf -> [libc.a(localtime.o)] localtime
[initial] __assert_fail -> [libc.a(assert.o)] _dl_pagesize ->
[libc.a(dl-support.o)] malloc
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)]
__get_nprocs -> [libc.a(getsysstats.o)] memchr
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)] memcmp
[initial] __assert_perror_fail -> [libc.a(assert-perr.o)] __strerror_r ->
[libc.a(_strerror.o)] memcpy
[initial] __assert_fail -> [libc.a(assert.o)] _IO_fflush ->
[libc.a(iofflush.o)] _IO_flush_all -> [libc.a(genops.o)] memmove
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)] memset
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)]
__libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres ->
[libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max ->
[libc.a(tzset.o)] __mon_yday -> [libc.a(mktime.o)] mktime
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] _nl_find_domain ->
[libc.a(finddomain.o)] _nl_expand_alias -> [libc.a(localealias.o)] qsort
[initial] __assert_fail -> [libc.a(assert.o)] __abort_msg -> [libc.a(abort.o)]
raise
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)]
realloc
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)]
__libc_setlocale_lock -> [libc.a(setlocale.o)] setlocale
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)]
__libc_setlocale_lock -> [libc.a(setlocale.o)] _nl_archive_subfreeres ->
[libc.a(loadarchive.o)] __sysconf -> [libc.a(sysconf.o)] __tzname_max ->
[libc.a(tzset.o)] sscanf
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] strchr
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] strcmp
[initial] __assert_fail -> [libc.a(assert.o)] strcpy
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] __gconv_open ->
[libc.a(gconv_open.o)] __gconv_close_transform -> [libc.a(gconv_db.o)]
__gconv_find_shlib -> [libc.a(gconv_dl.o)] __libc_dlclose ->
[libc.a(dl-libc.o)] __libc_register_dlfcn_hook -> [libc.a(sdlerror.o)] strerror
[initial] __assert_fail -> [libc.a(assert.o)] __fxprintf ->
[libc.a(fxprintf.o)] strlen
[initial] __assert_fail -> [libc.a(assert.o)] _dl_pagesize ->
[libc.a(dl-support.o)] __unsetenv -> [libc.a(setenv.o)] strncmp
[initial] __assert_fail -> [libc.a(assert.o)] _dl_pagesize ->
[libc.a(dl-support.o)] _dl_init_paths -> [libc.a(dl-load.o)] __strsep_g ->
[libc.a(strsep.o)] strpbrk
[initial] __assert_fail -> [libc.a(assert.o)] __progname ->
[libc.a(init-misc.o)] strrchr
[initial] __assert_fail -> [libc.a(assert.o)] __dcgettext ->
[libc.a(dcgettext.o)] __dcigettext -> [libc.a(dcigettext.o)] strstr
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)] strtol
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)]
__get_nprocs -> [libc.a(getsysstats.o)] strtoul
[initial] __assert_fail -> [libc.a(assert.o)] free -> [libc.a(malloc.o)]
__get_nprocs -> [libc.a(getsysstats.o)] time
[initial] __assert_fail -> [libc.a(assert.o)] __fxprintf ->
[libc.a(fxprintf.o)] _IO_vfprintf -> [libc.a(vfprintf.o)] vfprintf
conform/XPG4/wordexp.h/linknamespace.test-result contains:
FAIL: conform/XPG4/wordexp.h/linknamespace
original exit status 1
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>From glibc-bugs-return-30742-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 23 16:21:23 2015
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Subject: [Bug string/19391] strnlen invokes UB by adding maxlen to str
Date: Wed, 23 Dec 2015 16:21:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Isn't strnlen (p, -1) equivalent to strlen (p)? It's difficult to tell from
the specification.
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Subject: [Bug string/19390] Integer overflow in strncat
Date: Wed, 23 Dec 2015 19:25:00 -0000
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M. Simpson <matthew.aaron.simpson at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |matthew.aaron.simpson@gmail
| |.com
--- Comment #4 from M. Simpson <matthew.aaron.simpson at gmail dot com> ---
$ file a.out
a.out: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked,
interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32,
BuildID[sha1]=8730e4750909db3ae281264c026e8ceb6ec4a140, not stripped
$ pacman -Q | grep glibc
glibc 2.22-3
lib32-glibc 2.22-3.1
$ ./a.out
before:
01111111111111111111111111111111111111111111111111...
after:
22222222222222222222222222222222202222211111111111...
the string should end here ^
This is on:
Arch Linux 4.2.5-1-ARCH #1 SMP PREEMPT Tue Oct 27 08:13:28 CET 2015 x86_64
GNU/Linux
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>From glibc-bugs-return-30744-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 23 19:28:26 2015
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Subject: [Bug nptl/13690] pthread_mutex_unlock potentially cause invalid access
Date: Wed, 23 Dec 2015 19:28:00 -0000
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Torvald Riegel <triegel at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #52 from Torvald Riegel <triegel at redhat dot com> ---
This is now fixed on master.
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>From glibc-bugs-return-30745-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 24 00:14:29 2015
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From: "info at robinvandervliet dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/19400] New: Language missing in "iso-639.def", trivial fix in description
Date: Thu, 24 Dec 2015 00:14:00 -0000
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Bug ID: 19400
Summary: Language missing in "iso-639.def", trivial fix in
description
Product: glibc
Version: unspecified
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Priority: P2
Component: locale
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When I tried to compile my custom locale for the Talossan language with
"localedef", I got the following errors:
LC_ADDRESS: terminology language code `tzl' not defined
LC_ADDRESS: language abbreviation `tzl' not defined
Those errors are caused by "iso-639.def" not supporting the Talossan language,
because when I swap out "tzl" in my code to "tlh" (Klingon) it does work.
Adding the following line to "iso-639.def" will fix the problem:
DEFINE_LANGUAGE_CODE3 ("Talossan", tzl, tzl)
I hope somebody here can add this line soon, so this bug report can be closed.
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>From glibc-bugs-return-30746-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 24 07:17:37 2015
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Subject: [Bug localedata/19385] bg_BG: time separator should be colon, not comma
Date: Thu, 24 Dec 2015 07:17:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |http://bugs.debian.org/8081
| |43
Summary|Time separator in bg_BG |bg_BG: time separator
|should be colon, not comma |should be colon, not comma
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19402] New: Deadlock with robust shared mutex and asynchronous termination
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Bug ID: 19402
Summary: Deadlock with robust shared mutex and asynchronous
termination
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: raoulgough at yahoo dot co.uk
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 8863
--> https://sourceware.org/bugzilla/attachment.cgi?id=8863&action=edit
Test program for shared robust mutex with asynchronous termination
I have a test program that sets up a process-shared robust mutex, and then
forks a child that repeatedly locks and unlocks the mutex in a loop while the
parent concurrently sends a signal to kill the child. It repeats this, forking
a new child each time, until the required number of iterations complete and the
program exists or the program stops making progress for some reason.
Steps to reproduce
==================
Compile and run the attached test program on a Linux system with at least two
CPU cores.
e.g.
$ gcc -Wall -g test_robust.c -lpthread -o test_robust
$ ./test_robust
iteration 0
C-c C-c
$
Actual results
==============
The program stalls, on my system usually after less than 200 iterations.
Expected results
================
I expect the program always to run to completion in a reasonable amount of
time. The stalled state shouldn't exist because the robust mutex was either
locked or unlocked at the time the child terminated, and so pthread_mutex_lock
in the parent should return either EOWNERDEAD or no error, respectively.
Test platform
=============
Dual-core Intel(R) Core(TM)2 Duo CPU P8600 @ 2.40GHz
Linux debian8 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt20-1+deb8u1 (2015-12-14)
x86_64 GNU/Linux
Hosted under VMWare Fusion 4.1.4 on Mac OS X 10.6.8
Results are the same both with the stock debian jessie glibc (2.19-18+deb8) and
with a glibc built on this system from git glibc sources as of commit
2cf3e1aa7477b813ca3ebb901003a7d44f970218 (2015-12-22 13:39:19 UTC).
I have seen a similar test program exhibit the same problem on bare metal Red
Hat Linux systems, so I don't think it is VMWare or Debian specific.
Further details
===============
I have done a few things to investigate this further. Firstly, in the stalled
state the child process is definitely terminated but the parent process is
stuck in a futex system call - see example session below:
$ make test_robust
cc -Wall -g -I/home/raoul/install/include -I
/usr/lib/gcc/x86_64-linux-gnu/4.9.2/include -I /usr/include -I
/usr/include/x86_64-linux-gnu -L/home/raoul/install/lib
-Wl,-rpath=/home/raoul/install/lib
-Wl,--dynamic-linker=/home/raoul/install/lib/ld-2.22.90.so test_robust.c
-lpthread -o test_robust
$ ./test_robust &
[1] 25446
$ iteration 0
iteration 100
$ ps
PID TTY TIME CMD
25144 pts/2 00:00:00 bash
25446 pts/2 00:00:00 test_robust
25549 pts/2 00:00:00 ps
$ cat /proc/$!/stack
[<ffffffff810d18cc>] futex_wait_queue_me+0xcc/0x130
[<ffffffff810d1ba2>] futex_wait+0x162/0x260
[<ffffffff8108958a>] posix_cpu_timers_exit+0x1a/0x30
[<ffffffff810d3d22>] do_futex+0xf2/0xb60
[<ffffffff810a76b2>] remove_wait_queue+0x12/0x50
[<ffffffff810694fc>] do_wait+0x11c/0x230
[<ffffffff810d47fe>] SyS_futex+0x6e/0x150
[<ffffffff81068410>] child_wait_callback+0x0/0x60
[<ffffffff81513ccd>] system_call_fast_compare_end+0x10/0x15
[<ffffffffffffffff>] 0xffffffffffffffff
Secondly, it is possible to attach gdb to the parent and inspect the state of
the mutex in the stalled state, which (I think) shows the mutex is "locked" by
the terminated child process:
$ gdb -p $!
GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
Attaching to process 25446
Reading symbols from /home/raoul/c/test_robust...done.
Reading symbols from /home/raoul/install/lib/libpthread.so.0...done.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/home/raoul/install/lib/libthread_db.so.1".
Loaded symbols for /home/raoul/install/lib/libpthread.so.0
Reading symbols from /home/raoul/install/lib/libc.so.6...done.
Loaded symbols for /home/raoul/install/lib/libc.so.6
Reading symbols from /home/raoul/install/lib/ld-2.22.90.so...done.
Loaded symbols for /home/raoul/install/lib/ld-2.22.90.so
__lll_robust_lock_wait ()
at ../sysdeps/unix/sysv/linux/x86_64/lowlevelrobustlock.S:85
85 movl (%rdi), %eax
(gdb) frame 3
#3 0x0000000000401190 in main (argc=1, argv=0x7ffde4bc39d8)
at test_robust.c:137
137 do_lock(shared);
(gdb) set print pretty
(gdb) print *shared
$1 = {
mutex = {
__data = {
__lock = -2147458100,
__count = 1,
__owner = 0,
__nusers = 0,
__kind = 656,
__spins = 0,
__elision = 0,
__list = {
__prev = 0x0,
__next = 0x0
}
},
__size = "\314c\000\200\001", '\000' <repeats 11 times>, "\220\002", '\000'
<repeats 21 times>,
__align = 6442476492
},
child_state = 2,
child_pid = 25548,
reclaims = 95
}
(gdb) print/x shared->mutex.__data.__lock
$2 = 0x800063cc
(gdb) print shared->mutex.__data.__lock & 0xffff
$3 = 25548
(gdb) print shared->child_pid
$4 = 25548
(gdb) quit
A debugging session is active.
Inferior 1 [process 25446] will be detached.
Quit anyway? (y or n) y
Detaching from program: /home/raoul/c/test_robust, process 25446
$ kill %%; wait %%
[1]+ Terminated ./test_robust
Finally, it is possible to parameterize the test program such that it
sends the child a SIGABRT instead of a SIGTERM, which causes it to
dump core. This allows us to see where the child process was executing
when it terminated. In my case, I have no corefile pattern on the
system so the same corefile gets repeatedly overwritten until the
parent stalls:
$ ulimit -c unlimited
$ ./test_robust 200 6 &
[1] 26200
$ iteration 0
iteration 100
$ gdb test_robust core
[snip]
Program terminated with signal SIGABRT, Aborted.
#0 0x00007f52d0a23735 in __pthread_mutex_lock_full (mutex=0x7f52d0e55000)
at ../nptl/pthread_mutex_lock.c:256
256 oldval = LLL_ROBUST_MUTEX_LOCK (mutex, id);
(gdb) disas
Dump of assembler code for function __pthread_mutex_lock_full:
[snip]
0x00007f52d0a23710 <+768>: and $0x40000000,%eax
0x00007f52d0a23715 <+773>: jne 0x7f52d0a237b8
<__pthread_mutex_lock_full+936>
0x00007f52d0a2371b <+779>: and $0x3fffffff,%edx
0x00007f52d0a23721 <+785>: cmp %edx,%ebp
0x00007f52d0a23723 <+787>: je 0x7f52d0a23815
<__pthread_mutex_lock_full+1029>
0x00007f52d0a23729 <+793>: mov %ebp,%edi
0x00007f52d0a2372b <+795>: mov %r10d,%eax
0x00007f52d0a2372e <+798>: mov %r9d,%esi
0x00007f52d0a23731 <+801>: lock cmpxchg %edi,(%rbx)
=> 0x00007f52d0a23735 <+805>: je 0x7f52d0a2374d
<__pthread_mutex_lock_full+829>
0x00007f52d0a23737 <+807>: lea (%rbx),%rdi
0x00007f52d0a2373a <+810>: sub $0x80,%rsp
0x00007f52d0a23741 <+817>: callq 0x7f52d0a29e50 <__lll_robust_lock_wait>
[snip]
End of assembler dump.
(gdb) info reg eflags
eflags 0x246 [ PF ZF IF ]
(gdb) where
#0 0x00007f52d0a23735 in __pthread_mutex_lock_full (mutex=0x7f52d0e55000)
at ../nptl/pthread_mutex_lock.c:256
#1 0x0000000000400e04 in run_child (shared=0x7f52d0e55000)
at test_robust.c:62
#2 0x0000000000400f0b in do_fork (shared=0x7f52d0e55000) at test_robust.c:81
#3 0x000000000040119c in main (argc=3, argv=0x7fff630d1cd8)
at test_robust.c:138
(gdb) frame 3
#3 0x000000000040119c in main (argc=3, argv=0x7fff630d1cd8)
at test_robust.c:138
138 do_fork(shared);
(gdb) set print pretty
(gdb) print *shared
$1 = {
mutex = {
__data = {
__lock = 26301,
__count = 1,
__owner = 0,
__nusers = 0,
__kind = 656,
__spins = 0,
__elision = 0,
__list = {
__prev = 0x0,
__next = 0x0
}
},
__size = "\275f\000\000\001", '\000' <repeats 11 times>, "\220\002", '\000'
<repeats 21 times>,
__align = 4294993597
},
child_state = 2,
child_pid = 26301,
reclaims = 89
}
(gdb) print/x shared->mutex
$2 = {
__data = {
__lock = 0x66bd,
__count = 0x1,
__owner = 0x0,
__nusers = 0x0,
__kind = 0x290,
__spins = 0x0,
__elision = 0x0,
__list = {
__prev = 0x0,
__next = 0x0
}
},
__size = {0xbd, 0x66, 0x0, 0x0, 0x1, 0x0 <repeats 11 times>, 0x90, 0x2,
0x0 <repeats 22 times>},
__align = 0x1000066bd
}
Here is another slightly different case where the child terminated after the
LLL_ROBUST_MUTEX_LOCK, but before (or during) the ENQUEUE_MUTEX:
Program terminated with signal SIGABRT, Aborted.
#0 0x00007f892a4f0777 in __pthread_mutex_lock_full (mutex=0x7f892a922000)
at ../nptl/pthread_mutex_lock.c:272
272 ENQUEUE_MUTEX (mutex);
(gdb) disas
[snip]
0x00007f892a4f075f <+847>: movl $0x1,0x4(%rbx)
0x00007f892a4f0766 <+854>: mov %fs:0x2e0,%rax
0x00007f892a4f076f <+863>: and $0xfffffffffffffffe,%rax
0x00007f892a4f0773 <+867>: mov %r8,-0x8(%rax)
=> 0x00007f892a4f0777 <+871>: mov %fs:0x2e0,%rax
0x00007f892a4f0780 <+880>: mov %rax,0x20(%rbx)
[snip]
Speculation
===========
My theory is that there are at least some points in the execution of
pthread_mutex_lock and/or pthread_mutex_unlock where an asynchronous
termination signal can leave the mutex in a locked state which the kernel does
not resolve during termination. In the example termination points above, the
LLL_ROBUST_MUTEX_LOCK has completed but the mutex has not yet been added to the
thread-specific robust mutex list. This kind of termination is not likely, but
is possible via an external process sending a signal (as in this test) or
another thread in the same program encountering a SEGV or such like.
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Subject: [Bug nptl/19402] Deadlock with robust shared mutex and asynchronous termination
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From: "info at robinvandervliet dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/19400] Language missing in "iso-639.def", trivial fix in description
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--- Comment #1 from Robin van der Vliet <info at robinvandervliet dot com> ---
Created attachment 8865
--> https://sourceware.org/bugzilla/attachment.cgi?id=8865&action=edit
Proposed patch, added 1 line
My proposed patch. I added the 1 line I described in the description of the
bug.
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From: "bernd.edlinger at hotmail dot de" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/19403] New: cross-compiling fails to install
Date: Fri, 25 Dec 2015 12:37:00 -0000
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Bug ID: 19403
Summary: cross-compiling fails to install
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: bernd.edlinger at hotmail dot de
CC: carlos at redhat dot com
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Hi
when testing my fix for gcc bug#69012 I tried to build
a cross glibc for mips-linux-gnu out of nothing, but it
failed to install on my system root, is that expected?
If the install succeeds I want to build a cross-g++,
fortran and ada compiler, because they need working glibc.
I did the following steps
cd ../binutils-build-mips
../binutils-2.25.1/configure --prefix=/home/ed/gnu/mips-linux-gnu
--target=mips-linux-gnu
make && make install
cd ../gcc-build-mips
../gcc-trunk/configure --prefix=/home/ed/gnu/mips-linux-gnu
--target=mips-linux-gnu --enable-languages=c --disable-shared --disable-threads
--disable-libssp --disable-libgomp --disable-libquadmath --disable-libatomic
make && make install
PATH=/home/ed/gnu/mips-linux-gnu/bin:$PATH
cd ../linux
make ARCH=mips CROSS_COMPILE=mips-linux-gnu- distclean
make ARCH=mips CROSS_COMPILE=mips-linux-gnu- defconfig
make ARCH=mips CROSS_COMPILE=mips-linux-gnu-
INSTALL_HDR_PATH=/home/ed/gnu/mips-linux-gnu/mips-linux-gnu headers_install
cd ../glibc-build-mips
../glibc-2.22/configure --prefix=/home/
../binutils-2.25.1/configure --prefix=/home/ed/gnu/mips-linux-gnu
--target=mips-linux-gnu
make && make install
cd ../gcc-build-mips
../gcc-trunk/configure --prefix=/home/ed/gnu/mips-linux-gnu
--target=mips-linux-gnu --enable-languages=c --disable-shared --disable-threads
--disable-libssp --disable-libgomp --disable-libquadmath --disable-libatomic
make && make install
PATH=/home/ed/gnu/mips-linux-gnu/bin:$PATH
cd ../linux
make ARCH=mips CROSS_COMPILE=mips-linux-gnu- distclean
make ARCH=mips CROSS_COMPILE=mips-linux-gnu- defconfig
make ARCH=mips CROSS_COMPILE=mips-linux-gnu-
INSTALL_HDR_PATH=/home/ed/gnu/mips-linux-gnu/mips-linux-gnu headers_install
cd ../glibc-build-mips
../glibc-2.22/configure --prefix=/home/ed/gnu/mips-linux-gnu/mips-linux-gnu
--build=mips-linux-gnu --disable-werror CC=mips-linux-gnu-gcc BUILD_CC=gcc
make # succeeds if the patch from gcc bug#69012 is installed
make install
...
if test -r
/home/ed/gnu/mips-linux-gnu/mips-linux-gnu/include/gnu/stubs-o32_hard.h && cmp
-s /home/ed/gnu/glibc-build-mips/stubs.h
/home/ed/gnu/mips-linux-gnu/mips-linux-gnu/include/gnu/stubs-o32_hard.h; \
then echo 'stubs.h unchanged'; \
else /usr/bin/install -c -m 644 /home/ed/gnu/glibc-build-mips/stubs.h
/home/ed/gnu/mips-linux-gnu/mips-linux-gnu/include/gnu/stubs-o32_hard.h; fi
stubs.h unchanged
rm -f /home/ed/gnu/glibc-build-mips/stubs.h
/home/ed/gnu/glibc-build-mips/elf/sln
/home/ed/gnu/glibc-build-mips/elf/symlink.list
/home/ed/gnu/glibc-build-mips/elf/sln: 1:
/home/ed/gnu/glibc-build-mips/elf/sln: Syntax error: "(" unexpected
make[1]: *** [install-symbolic-link] Error 2
make[1]: Leaving directory `/home/ed/gnu/glibc-2.22'
make: *** [install] Fehler 2
Note: /home/ed/gnu/glibc-build-mips/elf/sln was built by the cross compiler,
and is therefore not executable on the host system.
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From: "bernd.edlinger at hotmail dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/19403] cross-compiling fails to install
Date: Fri, 25 Dec 2015 13:05:00 -0000
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--- Comment #1 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
hmm, the problem starts probably because of this
../glibc-2.22/configure --prefix=/home/ed/gnu/mips-linux-gnu/mips-linux-gnu
--build=mips-linux-gnu --disable-werror CC=mips-linux-gnu-gcc BUILD_CC=gcc
grep cross *
config.log:cross_compiling='no'
config.make:cross-compiling = no
config.status:# must be portable across $(()) and expr.
config.status:S["cross_compiling"]="no"
../glibc-2.22/configure --prefix=/home/ed/gnu/mips-linux-gnu/mips-linux-gnu
--host=x86_64-linux-gnu --build=mips-linux-gnu --disable-werror
CC=mips-linux-gnu-gcc BUILD_CC=gcc
...
checking for forced unwind support... yes
checking for C cleanup handling... yes
running configure fragment for sysdeps/gnu
running configure fragment for sysdeps/x86_64
checking for cpuid.h... no
configure: error: gcc must provide the <cpuid.h> header
../glibc-2.22/configure --prefix=/home/ed/gnu/mips-linux-gnu/mips-linux-gnu
--host=x86_64-linux-gnu --build=mips-linux-gnu --disable-werror
succeds, and
grep cross *
config.log:cross_compiling='yes'
config.make:cross-compiling = yes
config.status:# must be portable across $(()) and expr.
config.status:S["cross_compiling"]="yes"
but the build now uses x86_64-linux-gnu-gcc all the time.
so there is no way how to configure that correctly,
but if BUILD_CC != CC we know, it is a cross build.
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>From glibc-bugs-return-30752-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 25 13:38:59 2015
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From: "bernd.edlinger at hotmail dot de" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/19403] cross-compiling fails to install
Date: Fri, 25 Dec 2015 13:38:00 -0000
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--- Comment #2 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
this works for me:
diff -pur a/glibc-2.22/Makefile b/glibc-2.22/Makefile
--- a/glibc-2.22/Makefile 2015-08-05 08:42:21.000000000 +0200
+++ b/glibc-2.22/Makefile 2015-12-25 14:10:22.508742935 +0100
@@ -96,7 +96,7 @@ elf/ldso_install:
# Create links for shared libraries using the `ldconfig' program if possible.
# Ignore the error if we cannot update /etc/ld.so.cache.
-ifeq (no,$(cross-compiling))
+ifeq ($(BUILD_CC),$(CC))
ifeq (yes,$(build-shared))
install: install-symbolic-link
.PHONY: install-symbolic-link
diff -pur a/glibc-2.22/Makerules b/glibc-2.22/Makerules
--- a/glibc-2.22/Makerules 2015-08-05 08:42:21.000000000 +0200
+++ b/glibc-2.22/Makerules 2015-12-25 14:22:31.295783007 +0100
@@ -996,7 +996,7 @@ endef
endif
ifeq (yes,$(build-shared))
-ifeq (no,$(cross-compiling))
+ifeq ($(BUILD_CC),$(CC))
symbolic-link-prog := $(elf-objpfx)sln
symbolic-link-list := $(elf-objpfx)symlink.list
define make-shlib-link
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>From glibc-bugs-return-30753-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 26 19:09:14 2015
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug string/19390] Integer overflow in strncat
Date: Sat, 26 Dec 2015 19:09:00 -0000
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--- Comment #5 from Alexander Cherepanov <cherepan at mccme dot ru> ---
Created attachment 8866
--> https://sourceware.org/bugzilla/attachment.cgi?id=8866&action=edit
Test strncat for all offsets
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>From glibc-bugs-return-30754-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 26 19:14:56 2015
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19390] Integer overflow in strncat
Date: Sat, 26 Dec 2015 19:14:00 -0000
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--- Comment #6 from Alexander Cherepanov <cherepan at mccme dot ru> ---
(In reply to howey014 from comment #1)
> I tried your code on ppc 32-bit, with glibc 2.20 as I didn't have 2.22
> available.
(In reply to cvs268 from comment #2)
> Tried the sample-code on ARM (Cortex A9) running Ubuntu 12.04.
[skip]
> So works properly, no issues, right?
Thanks for testing it on different archs. Yes, this particular test is fine.
I attached a fuller test which tries all offsets and all lengths upto 64 (you
can change it to 128 if you want). It will either print "Ok" or details of the
first found fail. Please try it on your platforms.
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>From glibc-bugs-return-30755-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 26 19:24:31 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug string/19390] Integer overflow in strncat
Date: Sat, 26 Dec 2015 19:24:00 -0000
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--- Comment #7 from Alexander Cherepanov <cherepan at mccme dot ru> ---
(In reply to Xavier Roche from comment #3)
> Possible duplicate of BUG 17279
> (https://sourceware.org/bugzilla/show_bug.cgi?id=17279)
Yes, seems to be the same. So, this bug is not merely theoretical but is
triggered by real code. Is your code open source / publicly available?
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>From glibc-bugs-return-30756-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Dec 27 11:47:16 2015
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From: "GavinSmith0123 at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug manual/19404] New: Treatment of combining characters by iconv not documented well
Date: Sun, 27 Dec 2015 11:47:00 -0000
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Bug ID: 19404
Summary: Treatment of combining characters by iconv not
documented well
Product: glibc
Version: unspecified
Status: NEW
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Priority: P2
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In some character encodings like cp-1255, there are combining characters that
can be combined with the preceding character: for example, to represent accents
or vowel points.
When iconv processes input from such an encoding, it may not output a character
from the input until it sees whether a combining character follows which would
have to be combined with the character. At the end of the input, it is
necessary to call iconv with null input arguments to flush the last character.
The manual (in manual/charset.texi, node Generic Conversion Interface) doesn't
document this well. It says the following:
"If INBUF is a null pointer, the `iconv' function performs the
necessary action to put the state of the conversion into the
initial state.
...
"Therefore an `iconv' call to reset the state should always
be performed if some protocol requires this for the output text"
This does not obviously apply for combining characters. In this case every
non-combining, graphical character is simultaneously a shift character and not
a shift character: a shift character when a combining character comes after it,
and not a shift character when a combining character doesn't come after it or
it occurs at the end of the input. This is not what people have in mind when
they read about "shift sequences". The manual explains that the shift state is
reset for the output, but not that graphical characters may be waiting to be
output.
Moreover, the following in the manual is misleading:
"If all input from the input buffer is successfully converted and
stored in the output buffer, the function returns the number of
non-reversible conversions performed."
This is not true because a positive return value is possible while a character
from the input waits in the iconv state, and is not stored in the output
buffer.
The extra call to iconv was missing for wget (see
http://lists.gnu.org/archive/html/bug-wget/2015-12/msg00110.html) and info (see
https://lists.gnu.org/archive/html/bug-texinfo/2015-12/msg00010.html).
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>From glibc-bugs-return-30757-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Dec 27 15:41:35 2015
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug manual/19406] New: memchr description: may it access all @var{size} bytes?
Date: Sun, 27 Dec 2015 15:41:00 -0000
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Bug ID: 19406
Summary: memchr description: may it access all @var{size}
bytes?
Product: glibc
Version: 2.22
Status: NEW
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Priority: P2
Component: manual
Assignee: unassigned at sourceware dot org
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The description of the memchr function in C11, 7.24.5.1p2, says that memchr
cannot access the part of the array after the located char:
"The implementation shall behave as if it reads the characters sequentially and
stops as soon as a matching character is found."
The glibc manual doesn't provide this guarantee:
"This function finds the first occurrence of the byte @var{c} (converted to an
@code{unsigned char}) in the initial @var{size} bytes of the object beginning
at @var{block}. The return value is a pointer to the located byte, or a null
pointer if no match was found."
https://sourceware.org/git/?p=glibc.git;a=blob;f=manual/string.texi;h=016fd0b9a05f3126a1594e942c5e6da0669d0410;hb=HEAD#l1716
The implementation is probably fine so only the manual is wrong.
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>From glibc-bugs-return-30758-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Dec 27 15:43:53 2015
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19387] Integer overflow in memchr
Date: Sun, 27 Dec 2015 15:43:00 -0000
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--- Comment #1 from Alexander Cherepanov <cherepan at mccme dot ru> ---
The description of memchr in the glibc manual seems to prohibit the provided
example. This is wrong and is filed as pr19406 now.
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>From glibc-bugs-return-30759-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Dec 27 15:45:54 2015
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Subject: [Bug manual/19407] New: Non-null-terminated arrays in description of strn* and wcsn* functions
Date: Sun, 27 Dec 2015 15:45:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19407
Bug ID: 19407
Summary: Non-null-terminated arrays in description of strn* and
wcsn* functions
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: manual
Assignee: unassigned at sourceware dot org
Reporter: cherepan at mccme dot ru
CC: mtk.manpages at gmail dot com, roland at gnu dot org
Target Milestone: ---
The strn* and wcsn* functions take an argument limiting the size of processed
parts of arrays. The C standard cautiously and consistently talks about arrays
instead of strings in such cases and (hence) doesn't require arguments to be
null-terminated strings in all cases.
OTOH the glibc manual doesn't make such a distinction and doesn't usually make
remarks to that effect. (The only one I found is the description of strnlen
which mentions that it "works even if the string s is not null-terminated".)
Take for example strcmp and strncmp. The description of strcmp in C11,
7.24.4.2p2:
"The strcmp function compares the string pointed to by s1 to the string pointed
to by s2."
It talks about "the string pointed to by s1" as expected.
Then, the description of strncmp -- C11, 7.24.4.4p2:
"The strncmp function compares not more than n characters (characters that
follow a null character are not compared) from the array pointed to by s1 to
the array pointed to by s2."
Here, it talks about "the array pointed to by s1" instead of strings.
In the next paragraph it talks about "the possibly null-terminated array
pointed to by s1" (please note "possibly").
The description of strncmp in the glibc manual is silent on such details:
"This function is the similar to @code{strcmp}, except that no more than
@var{size} bytes are compared. In other words, if the two strings are the same
in their first @var{size} bytes, the return value is zero."
https://sourceware.org/git/?p=glibc.git;a=blob;f=manual/string.texi;h=016fd0b9a05f3126a1594e942c5e6da0669d0410;hb=HEAD#l1304
Affected function that are from C11:
strncpy/wcsncpy, strncat/wcsncat, strncmp/wcsncmp.
Other affected functions:
stpncpy/wcpncpy, strndup, strndupa, strncasecmp/wcsncasecmp.
For them, the point is moot but IMHO it's better to be consistent with C11.
I slightly tested several of these functions and they behave fine so it seems
only the manual is wrong.
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>From glibc-bugs-return-30762-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 00:43:36 2015
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>From glibc-bugs-return-30764-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 01:02:13 2015
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Subject: [Bug libc/19408] New: linux personality syscall wrapper may erroneously return an error on 32-bit architectures
Date: Mon, 28 Dec 2015 01:02:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19408
Bug ID: 19408
Summary: linux personality syscall wrapper may erroneously
return an error on 32-bit architectures
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: ldv at altlinux dot org
Reporter: ldv at altlinux dot org
CC: drepper.fsp at gmail dot com
Target Milestone: 2.23
While personality syscall is always successful on 32-bit architectures
nowadays, the syscall wrapper may return an error.
For example, personality((unsigned) -EINVAL) will make any subsequent
personality call, including absolutely harmless read-only
personality(0xffffffff) call, return -1 with errno set to EINVAL.
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>From glibc-bugs-return-30765-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 03:33:00 2015
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Subject: [Bug libc/19409] New: some open() flags are undefined without _GNU_SOURCE
Date: Mon, 28 Dec 2015 03:32:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19409
Bug ID: 19409
Summary: some open() flags are undefined without _GNU_SOURCE
Product: glibc
Version: 2.22
Status: NEW
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I'm using arch linux with glibc 2.22-3 on linux 4.2.5, and I didn't
compile glibc myself, but I downloaded the source. The line numbers are
from the latest git commit at the time of writing:
3cf74f8a4a0e0c7b7a9b4d40ba220832f33ea638
Fix getaddrinfo bug number in ChangeLog and NEWS files
O_DIRECT, O_NOATIME, O_PATH and O_TMPFILE are defined in lines 147-152 in
sysdeps/unix/sysv/linux/bits/fcntl-linux.h if __USE_GNU is defined.
Users need _GNU_SOURCE to enable them, but this isn't mentioned anywhere
in the docs. Please add it.
---
xoxo iza
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Subject: [Bug libc/19409] some open() flags are undefined without _GNU_SOURCE
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--- Comment #1 from Dmitry V. Levin <ldv at altlinux dot org> ---
(In reply to Isabella from comment #0)
> Users need _GNU_SOURCE to enable them, but this isn't mentioned anywhere
> in the docs. Please add it.
JFYI, open(2) manpage mentions this in "CONFORMING TO" section:
"The O_DIRECT, O_NOATIME, O_PATH, and O_TMPFILE flags are Linux-specific. One
must define _GNU_SOURCE to obtain their definitions".
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Subject: [Bug libc/19408] linux personality syscall wrapper may erroneously return an error on 32-bit architectures
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>From glibc-bugs-return-30768-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 11:39:31 2015
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From: "izaberina at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/19409] some open() flags are undefined without _GNU_SOURCE
Date: Mon, 28 Dec 2015 11:39:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19409
Isabella <izaberina at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Isabella <izaberina at gmail dot com> ---
I'm sorry for the noise, I totally missed it
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>From glibc-bugs-return-30769-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 14:05:33 2015
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From: "pascal_cuoq at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19391] strnlen invokes UB by adding maxlen to str
Date: Mon, 28 Dec 2015 14:05:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19391
--- Comment #2 from Pascal Cuoq <pascal_cuoq at hotmail dot com> ---
Florian,
my interpretation of the standards is that in all the strn* functions, as well
as memchr (as an explicit exception among the mem* functions), the size
argument limits the number of characters read but is allowed to be arbitrarily
larger than the number of characters that would be valid to read (if reading
stops because '\0' or the searched character is found).
In other words, yes, I think that strnlen (p, -1) should not invoke UB and be
equivalent to strlen (p).
In other words, this report is part of the same wave as
https://sourceware.org/bugzilla/show_bug.cgi?id=19390 and
https://sourceware.org/bugzilla/show_bug.cgi?id=19387 , except that those
describe concrete problems in assembly versions whereas this one is a
theoretical problem in the C version.
FWIW, the idea of looking at very large size arguments for standard functions
started with memchr, for which they are very explicitly allowed in POSIX and
C11, and it was this remark of Jed Davis that incited me to look at the strn*
functions:
https://twitter.com/xlerb/status/678963983756333056
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>From glibc-bugs-return-30770-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 14:08:51 2015
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19411] New: mbrtoc16 and mbrtowc: UB when n is larger than input size
Date: Mon, 28 Dec 2015 14:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19411
Bug ID: 19411
Summary: mbrtoc16 and mbrtowc: UB when n is larger than input
size
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: cherepan at mccme dot ru
Target Milestone: ---
The functions
size_t mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
size_t mbrtoc16 (char16_t *pc16, const char *s, size_t n, mbstate_t *ps)
have a limit n on the number of processed bytes but it seems that the source
array s is not required to contain n accessible bytes. At least the commit
https://sourceware.org/git/?p=glibc.git;a=commit;h=16edf13b226dbe5f4f39794cfa363904af2c7973
added checks for pointer wrapping into mbrtowc and a test case with n=SIZE_MAX
(the test case uses mbtowc which in turn passes everything to __mbrtowc).
The check looks like this:
endbuf = inbuf + n;
if (__glibc_unlikely (endbuf < inbuf))
https://sourceware.org/git/?p=glibc.git;a=blob;f=wcsmbs/mbrtowc.c;h=dbfe9403a64a544a233a7b9d8f6bcab92d9edb28;hb=HEAD#l74
https://sourceware.org/git/?p=glibc.git;a=blob;f=wcsmbs/mbrtoc16.c;h=f23b24262b8fffaeed67c57155e47379e44b48fd;hb=HEAD#l92
This code is invalid. The sum "inbuf + n" is undefined by the C standard when
the result doesn't point into the same array. Then, checks for pointer wrapping
like "endbuf < inbuf" are already "miscompiled" by clang and, I guess, could be
expected to be broken by gcc in the future.
Similar to pr19391.
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>From glibc-bugs-return-30771-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 14:10:42 2015
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/19412] New: xdrmem_setpos: UB when pos is large
Date: Mon, 28 Dec 2015 14:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19412
Bug ID: 19412
Summary: xdrmem_setpos: UB when pos is large
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: cherepan at mccme dot ru
Target Milestone: ---
It seems xdrmem_setpos tries to defend against out-of-bounds values of the pos
argument:
174 static bool_t
175 xdrmem_setpos (XDR *xdrs, u_int pos)
176 {
177 caddr_t newaddr = xdrs->x_base + pos;
178 caddr_t lastaddr = xdrs->x_private + xdrs->x_handy;
179 size_t handy = lastaddr - newaddr;
180
181 if (newaddr > lastaddr
182 || newaddr < xdrs->x_base
183 || handy != (u_int) handy)
184 return FALSE;
185
186 xdrs->x_private = newaddr;
187 xdrs->x_handy = (u_int) handy;
188 return TRUE;
189 }
https://sourceware.org/git/?p=glibc.git;a=blob;f=sunrpc/xdr_mem.c;h=8b9858959476ad8bee7f7eaa7250c516beda55b4;hb=HEAD#l174
This code is invalid C. The sum "xdrs->x_base + pos" (line 177) is undefined by
the C standard when the result doesn't point into the same array. Then, checks
for pointer wrapping like "newaddr < xdrs->x_base" (line 182) are already
"miscompiled" by clang and, I guess, could be expected to be broken by gcc in
the future.
Similar to pr19391.
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>From glibc-bugs-return-30772-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 14:14:10 2015
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/19413] New: ns_name_unpack: UB when checking for out of range addresses
Date: Mon, 28 Dec 2015 14:14:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19413
Bug ID: 19413
Summary: ns_name_unpack: UB when checking for out of range
addresses
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: cherepan at mccme dot ru
Target Milestone: ---
ns_name_unpack has the following code:
425 srcp = msg + (((n & 0x3f) << 8) | (*srcp & 0xff));
426 if (srcp < msg || srcp >= eom) { /*%< Out of
range. */
https://sourceware.org/git/?p=glibc.git;a=blob;f=resolv/ns_name.c;h=f355cf34443c46d091157ed06f4ef8487214bf10;hb=HEAD#l425
This code is invalid C. The sum "msg + ..." is undefined by the C standard when
the result doesn't point into the same array. Then, checks for pointer wrapping
like "srcp < msg" are already "miscompiled" by clang and, I guess, could be
expected to be broken by gcc in the future.
Similar to pr19391.
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>From glibc-bugs-return-30773-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 14:18:11 2015
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From: "cherepan at mccme dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/19391] strnlen invokes UB by adding maxlen to str
Date: Mon, 28 Dec 2015 14:18:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19391
--- Comment #3 from Alexander Cherepanov <cherepan at mccme dot ru> ---
(In reply to Florian Weimer from comment #1)
> Isn't strnlen (p, -1) equivalent to strlen (p)? It's difficult to tell from
> the specification.
1. I'm not sure what you mean. IMHO, yes, according to the
specifications[1][2], strnlen(p, -1) is equivalent to strlen(p) (modulo their
behavior on an array of SIZE_MAX non-NUL bytes and if objects can't be larger
than SIZE_MAX bytes). There is no explicit language requiring accesses to all
bytes up to maxlen to be valid hence an implementation can't assume it. And
IIUC this bug report filed based on this POV.
Is there a chance that strnlen("abc", -1) and, by generalization, strncmp("ab",
"abc", 5) are considered invalid?
Anyway, strnlen(p, -1) is in glibc tests[3].
The glibc manual is indeed silent on some aspects of the strn* functions -- I
files pr19407 (and pr19406 while at it). But it's not applicable to strnlen.
[1]
http://pubs.opengroup.org/onlinepubs/9699919799/functions/strlen.html#tag_16_577_03
[2]
https://www.gnu.org/software/libc/manual/html_node/String-Length.html#index-strnlen
[3]
https://sourceware.org/git/?p=glibc.git;a=blob;f=string/tst-strlen.c;h=8376831de559c12057a7a432dc91953fb4e9624f;hb=HEAD#l43
2. No matter what, a comparison of the form "buffer + len < buffer" (where
buffer is a pointer and len is a non-negative integer) is always a sign of
problems. According to the C standard it's either false or UB. If the code does
something when the result of the comparison is true it means two things:
1) such a case is expected;
2) the code to handle the case is invalid (invokes UB).
The straight comparison "buffer + len < buffer" is optimized into
"(ptrdiff_t)len < 0" right now by gcc (and by clang) which is not what a
programmer intended. The variant with an intermediary variable -- "end_ptr =
buffer + len; if (end_ptr < buffer)..." -- seems not to be optimized by current
gcc (but is optimized by clang). To depend on this is not the safest thing to
do. Please note that the current tests with n=SIZE_MAX will not catch this
optimization (because (ptrdiff_t)SIZE_MAX < 0).
Overall, very handy and robust way to find invalid pointer arithmetic. But, to
iterate, the comparison itself is only a sign of it and it's not enough to fix
the comparison alone.
3. I guess (and hope) that, in the end, this is considered a bug by the glibc
community even if a very low priority one (but who knows, given that "the GNU C
Library is implemented in GNU C, not in ISO C"). So I went and filed several
more similar bugs: pr19411, pr19412, pr19413.
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>From glibc-bugs-return-30774-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 28 17:38:31 2015
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Subject: [Bug locale/16950] mbrtowc on empty buffer returns 0, should return (size_t) -2
Date: Mon, 28 Dec 2015 17:38:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=16950
Alexander Cherepanov <cherepan at mccme dot ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |cherepan at mccme dot ru
--- Comment #1 from Alexander Cherepanov <cherepan at mccme dot ru> ---
Seems to be fixed in
https://sourceware.org/git/?p=glibc.git;a=commit;h=9781a370023952383028e07399fd196a889bb2be
.
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Subject: [Bug string/19414] New: mbsrtowcs and wcsrtombs: UB and fail with large len
Date: Mon, 28 Dec 2015 19:28:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19414
Bug ID: 19414
Summary: mbsrtowcs and wcsrtombs: UB and fail with large len
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: cherepan at mccme dot ru
Target Milestone: ---
Created attachment 8867
--> https://sourceware.org/bugzilla/attachment.cgi?id=8867&action=edit
mbsrtowcs and wcsrtombs fail with len=SIZE_MAX
The len argument of the mbsrtowcs and wcsrtombs functions limits the number of
elements stored into the destination array but it could be greater than the
size of the array. Hence additions in the following codes fragments are invalid
C (exhibit UB):
https://sourceware.org/git/?p=glibc.git;a=blob;f=wcsmbs/mbsrtowcs_l.c;h=d71934117d4e8aa894aa8d5f33ba2c308a7bf3d6;hb=HEAD#l107
107 data.__outbuf = (unsigned char *) dst;
108 data.__outbufend = data.__outbuf + len * sizeof (wchar_t);
https://sourceware.org/git/?p=glibc.git;a=blob;f=wcsmbs/wcsrtombs.c;h=ae303683383c3116a695bd0269c836a4f92c4cb9;hb=HEAD#l107
107 data.__outbuf = (unsigned char *) dst;
108 data.__outbufend = (unsigned char *) dst + len;
The functions also return wrong results wrongly return 0 when called with large
len, e.g., with len=SIZE_MAX. The attached program prints "0 0" instead of "2
2".
Please note that fixing only wrong result is not enough, the root problem is
invalid pointer arithmetic. See pr19411 for comparison.
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Subject: [Bug math/15421] lgamma wrongly sets signgam for ISO C
Date: Tue, 29 Dec 2015 06:06:00 -0000
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d46256f440fef7e3ee49d2e2660c2eeb707437e9
commit d46256f440fef7e3ee49d2e2660c2eeb707437e9
Author: Mike Frysinger <vapier@gentoo.org>
Date: Mon Dec 28 22:18:22 2015 -0500
ia64: fpu: fix gammaf typo [BZ #15421]
The lgamma rewrite in commit d709042a6e5ab3c360280faad6f9538a34dc8eea
used "gammaf" in this function when it should have used "gamma".
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
sysdeps/ia64/fpu/w_lgamma_main.c | 8 ++++----
2 files changed, 9 insertions(+), 4 deletions(-)
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Subject: [Bug dynamic-link/19329] dl-tls.c assert failure at concurrent pthread_create and dlopen
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https://sourceware.org/bugzilla/show_bug.cgi?id=19329
Ilya Palachev <i.palachev at samsung dot com> changed:
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--- Comment #1 from Ilya Palachev <i.palachev at samsung dot com> ---
Hi, I've suggested a patch for this bug:
https://sourceware.org/ml/libc-alpha/2015-12/msg00570.html
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Subject: [Bug libc/19415] New: dladdr returns wrong names on hppa
Date: Tue, 29 Dec 2015 18:24:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19415
Bug ID: 19415
Summary: dladdr returns wrong names on hppa
Product: glibc
Version: unspecified
Status: NEW
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Component: libc
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Host: hppa-unknown-linux-gnu
Target: hppa-unknown-linux-gnu
Build: hppa-unknown-linux-gnu
Created attachment 8868
--> https://sourceware.org/bugzilla/attachment.cgi?id=8868&action=edit
Test program.
Attached is a small test program that demonstrates. The code attempts
to find address info the function foo.
The files foo.c and bar.c should be compiled as shared libraries. The file
main.c should be compiled and linked against libfoo, libbar and libdl.
The code executes as follows:
dave@mx3210:~/debian/nss$ ./main
./main
./main
./main
The following glibc is used to find the function descriptor associated
with the function pointer &foo:
ElfW(Addr)
_dl_lookup_address (const void *address)
{
ElfW(Addr) addr = (ElfW(Addr)) address;
struct fdesc_table *t;
unsigned long int i;
for (t = local.root; t != NULL; t = t->next)
{
i = (struct fdesc *) addr - &t->fdesc[0];
if (i < t->first_unused && addr == (ElfW(Addr)) &t->fdesc[i])
{
addr = t->fdesc[i].ip;
break;
}
}
return addr;
}
The first time it is called we have
Breakpoint 1, main () at main.c:17
17 result = dladdr ((void *)&foo, &info);
(gdb) disass _dl_lookup_address
Dump of assembler code for function _dl_lookup_address:
0xfd4822c8 <+0>: addil L%800,r19,r1
0xfd4822cc <+4>: ldw 44(r1),ret0
0xfd4822d0 <+8>: ldw 0(ret0),r21
0xfd4822d4 <+12>: cmpib,= 0,r21,0xfd482310 <_dl_lookup_address+72>
0xfd4822d8 <+16>: copy r26,ret0
0xfd4822dc <+20>: ldo c(r21),r20
0xfd4822e0 <+24>: ldw 8(r21),r31
0xfd4822e4 <+28>: sub r26,r20,r20
0xfd4822e8 <+32>: extrw,s r20,28,29,r20
0xfd4822ec <+36>: cmpb,<<= r31,r20,0xfd482304 <_dl_lookup_address+60>
0xfd4822f0 <+40>: ldo 1(r20),r22
0xfd4822f4 <+44>: shladd,l r22,3,r21,r22
0xfd4822f8 <+48>: ldo 4(r22),r20
0xfd4822fc <+52>: cmpclr,<> r20,r26,r0
0xfd482300 <+56>: b,l,n 0xfd482314 <_dl_lookup_address+76>,r0
0xfd482304 <+60>: ldw 0(r21),r21
0xfd482308 <+64>: cmpib,<> 0,r21,0xfd4822e0 <_dl_lookup_address+24>
0xfd48230c <+68>: ldo c(r21),r20
0xfd482310 <+72>: bv,n r0(rp)
0xfd482314 <+76>: bv r0(rp)
0xfd482318 <+80>: ldw 4(r22),ret0
End of assembler dump.
(gdb) break *0xfd4822d4
Breakpoint 2 at 0xfd4822d4: file ../sysdeps/hppa/dl-fptr.c, line 332.
(gdb) c
Continuing.
Breakpoint 2, 0xfd4822d4 in _dl_lookup_address (address=0x11164)
at ../sysdeps/hppa/dl-fptr.c:332
332 ../sysdeps/hppa/dl-fptr.c: No such file or directory.
(gdb) p/x local
$1 = {root = 0xfd48b2c0, free_list = 0x0, npages = 0x2, boot_table = {
next = 0x0, len = 0x400, first_unused = 0x5,
fdesc = 0xfd48b2cc <local+24>}, boot_fdescs = {{ip = 0xfd480a88,
gp = 0xfd48d410}, {ip = 0xfc9b9cc0, gp = 0xfcaa6c30}, {ip = 0xfc99b2dc,
gp = 0xfcaa6c30}, {ip = 0xfc9b91b4, gp = 0xfcaa6c30}, {ip = 0xfc96c590,
gp = 0xfcaa6c30}, {ip = 0x0, gp = 0x0} <repeats 1019 times>}}
(gdb) p *t
$2 = {next = 0x0, len = 1024, first_unused = 5, fdesc = 0xfd48b2cc <local+24>}
(gdb) x/2x 0x11164
0x11164: 0x00011198 0x00000054
(gdb) bt
#0 0xfd4822d4 in _dl_lookup_address (address=0x11164)
at ../sysdeps/hppa/dl-fptr.c:332
#1 0xfca6c0fc in __GI__dl_addr (address=<optimized out>, info=0xfd70330c,
mapp=mapp@entry=0x0, symbolp=symbolp@entry=0x0) at dl-addr.c:127
#2 0xfcb56b74 in __dladdr (address=<optimized out>, info=<optimized out>)
at dladdr.c:38
#3 0x00010804 in main () at main.c:17
The function descriptor being used is not in the table so it is not found.
So, we end up with an address in main.
Think this lookup is only relevant to ia64?
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Subject: [Bug math/19270] [hppa] Shared libm missing __isnanl
Date: Tue, 29 Dec 2015 18:25:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d51442aacdbdb63e2f10815d843b551a9291d7a5
commit d51442aacdbdb63e2f10815d843b551a9291d7a5
Author: John David Anglin <dave.anglin@bell.net>
Date: Sun Nov 22 17:15:04 2015 -0500
hppa: Define __NO_LONG_DOUBLE_MATH so headers are consistent with libm
build [BZ #19270]
The attached patch fixes BZ #19270 and the Debian gmt package now builds
successfully. Aside from the comment, the define of __NO_LONG_DOUBLE_MATH
is similar to that in the generic version of glibc.
Build tested on hppa-unknown-linux-gnu with no observed regressions.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
sysdeps/hppa/fpu/bits/mathdef.h | 9 +++++++--
2 files changed, 12 insertions(+), 2 deletions(-)
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Subject: [Bug math/19270] [hppa] Shared libm missing __isnanl
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #5 from Mike Frysinger <vapier at gentoo dot org> ---
fix pushed to master
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Subject: [Bug network/19369] Default domain name not reset by res_ninit when "search" / "domain" entry is removed from resolv.conf
Date: Tue, 29 Dec 2015 18:32:00 -0000
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b674b821091141c5eed7d423612d3b10703e9c62
commit b674b821091141c5eed7d423612d3b10703e9c62
Author: Rob Wu <rob@robwu.nl>
Date: Wed Dec 16 12:53:27 2015 +0100
resolv: Reset defdname before use in __res_vinit [BZ #19369]
Resetting defdname (default domain name) before use in __res_vinit
ensures that the default domain name is correctly set to a default
value when it is not set by the LOCALDOMAIN environment variable or
the "domain" or "search" parameters in resolv.conf
Tested using the steps from:
https://sourceware.org/bugzilla/show_bug.cgi?id=19369
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
resolv/res_init.c | 1 +
2 files changed, 6 insertions(+), 0 deletions(-)
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Subject: [Bug network/19369] Default domain name not reset by res_ninit when "search" / "domain" entry is removed from resolv.conf
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Version|2.24 |2.22
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--- Comment #2 from Mike Frysinger <vapier at gentoo dot org> ---
fix pushed to master now
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Subject: [Bug localedata/19385] bg_BG: time separator should be colon, not comma
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commit b69b5b3e3e5a5cd9e693db1dc8c94e621561aa95
Author: Damyan Ivanov <dam+gnu@ktnx.net>
Date: Tue Dec 29 13:45:25 2015 -0500
localedata: bg_BG: use colon as time separator [BZ #19385]
The only official source is the "Official spelling dictionary of the
Bulgarian language, Prosveta 2012", which states there are three ways
to separate time components: comma, colon and dot. That same dictionary
doesn't say which one is preferred.
So I turned to the mailing list of the translators of free software in
Bulgarian. The consensus is that colon is the only separator that is
widely used in Bulgarian texts and everything else will just be confusing.
URL: http://lists.ludost.net/pipermail/dict/2015-December/000538.html
-----------------------------------------------------------------------
Summary of changes:
localedata/ChangeLog | 6 ++++++
localedata/locales/bg_BG | 4 ++--
2 files changed, 8 insertions(+), 2 deletions(-)
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Subject: [Bug localedata/19385] bg_BG: time separator should be colon, not comma
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.23
--- Comment #3 from Mike Frysinger <vapier at gentoo dot org> ---
i've formatted + posted + submitted this patch this time, but for future
submissions, please follow the checklist:
https://sourceware.org/glibc/wiki/Contribution%20checklist
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>From glibc-bugs-return-30785-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 29 20:04:26 2015
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Subject: [Bug localedata/19220] The LC_ADDRESS/postal_fmt values for China and Indian are not correct
Date: Tue, 29 Dec 2015 20:04:00 -0000
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--- Comment #1 from Mike Frysinger <vapier at gentoo dot org> ---
changes to localedata need citations to back up proposals. please cite
relevant official docs/specs.
once you have that, please follow the checklist:
https://sourceware.org/glibc/wiki/Contribution%20checklist
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>From glibc-bugs-return-30786-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 29 21:35:11 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug stdio/19416] New: ftell on wide-oriented stream can crash (in OOM case) or fail (in any case)
Date: Tue, 29 Dec 2015 21:35:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19416
Bug ID: 19416
Summary: ftell on wide-oriented stream can crash (in OOM case)
or fail (in any case)
Product: glibc
Version: 2.22
Status: NEW
Severity: normal
Priority: P2
Component: stdio
Assignee: unassigned at sourceware dot org
Reporter: cherepan at mccme dot ru
Target Milestone: ---
Created attachment 8869
--> https://sourceware.org/bugzilla/attachment.cgi?id=8869&action=edit
ftell returns wrong result and then crashes
There are several problems when ftell is called for a stream and the following
conditions are met:
- the stream is wide-oriented,
- it has unflushed data,
- the current locale uses a variable-length encoding.
The problems are illustrated by the attached sample program and are described
below. Quick-n-dirty patch is attached too.
When the conditions are met, at some point, the execution is passed to this
fragment:
----------------------------------------------------------------------
https://sourceware.org/git/?p=glibc.git;a=blob;f=libio/wfileops.c;h=99f9c8fe65726ac4c163c7d61bc7ee58e05e986e;hb=HEAD#l697
697 {
698 size_t delta = (fp->_wide_data->_IO_write_ptr
699 - fp->_wide_data->_IO_write_base);
Apparently, this is the number of wide chars not yet written to the stream.
700
701 /* Allocate enough space for the conversion. */
702 size_t outsize = delta * sizeof (wchar_t);
Problem 1: to get the size of output buffer you have to multiply the number of
chars by something like MB_LEN_MAX instead of sizeof (wchar_t). If there is not
enough space conversion will fail.
703 char *out = malloc (outsize);
Problem 2: the result of malloc is checked. In out of memory condition the
program will crash.
704 char *outstop = out;
705 const wchar_t *in = fp->_wide_data->_IO_write_base;
706
707 enum __codecvt_result status;
708
709 __mbstate_t state = fp->_wide_data->_IO_last_state;
710 status = (*cv->__codecvt_do_out) (cv, &state,
711 in, in + delta, &in,
712 out, out + outsize,
&outstop);
713
714 /* We don't check for __codecvt_partial because it can be
715 returned on one of two conditions: either the output
716 buffer is full or the input sequence is incomplete. We
717 take care to allocate enough buffer and our input
718 sequences must be complete since they are accepted as
719 wchar_t; if not, then that is an error. */
720 if (__glibc_unlikely (status != __codecvt_ok))
721 {
722 free (out);
723 return WEOF;
Problem 3: WEOF is invalid error code for ftell. It prints 4294967295 on my
x86-64 machine.
724 }
725
726 offset += outstop - out;
727 free (out);
728 }
----------------------------------------------------------------------
Introduced in
https://sourceware.org/git/?p=glibc.git;a=commit;h=000232b9bcbf194f1e5fd0ff380000f341505405
.
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Subject: [Bug stdio/19416] ftell on wide-oriented stream can crash (in OOM case) or fail (in any case)
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--- Comment #1 from Alexander Cherepanov <cherepan at mccme dot ru> ---
Created attachment 8870
--> https://sourceware.org/bugzilla/attachment.cgi?id=8870&action=edit
Patch
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>From glibc-bugs-return-30788-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 29 22:31:38 2015
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Subject: [Bug dynamic-link/19329] dl-tls.c assert failure at concurrent pthread_create and dlopen
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>From glibc-bugs-return-30789-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 30 04:21:37 2015
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Subject: [Bug localedata/19198] Small improvements Dutch locales
Date: Wed, 30 Dec 2015 04:21:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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commit a82cd945b54958f2ee8d1503eee20fd521f1c236
Author: Mike Frysinger <vapier@gentoo.org>
Date: Tue Dec 29 23:19:54 2015 -0500
localedata: nl_NL@euro: copy measurement from nl_NL [BZ #19198]
No real changes here as the output is the same. Just making the input
a little bit nicer.
-----------------------------------------------------------------------
Summary of changes:
localedata/ChangeLog | 5 +++++
localedata/locales/nl_NL@euro | 3 +--
2 files changed, 6 insertions(+), 2 deletions(-)
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>From glibc-bugs-return-30790-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 30 04:22:21 2015
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Subject: [Bug localedata/19198] nl_NL: small improvements for Dutch locales
Date: Wed, 30 Dec 2015 04:22:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Small improvements Dutch |nl_NL: small improvements
|locales |for Dutch locales
--- Comment #2 from Mike Frysinger <vapier at gentoo dot org> ---
i've committed the suggestion for nl_NL@euro
please provide justifications for the nl_NL improvements though
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>From glibc-bugs-return-30791-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 30 10:33:53 2015
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To: glibc-bugs@sourceware.org
Subject: [Bug string/19391] strnlen invokes UB by adding maxlen to str
Date: Wed, 30 Dec 2015 10:33:00 -0000
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--- Comment #4 from Alexander Cherepanov <cherepan at mccme dot ru> ---
On 2015-12-28 17:18, cherepan at mccme dot ru wrote:
> (In reply to Florian Weimer from comment #1)
>> Isn't strnlen (p, -1) equivalent to strlen (p)? It's difficult to tell from
>> the specification.
>
> 1. I'm not sure what you mean.
Ok, I think I found the reason of the confusion. I was looking at glibc
manual as available on https://www.gnu.org/ but manual/string.texi was
modified recently. In particular, the description of strnlen was changed
by [1]. The current description[2] indeed talks about "the array @var{s}
of size @var{maxlen}". IMHO this is plainly wrong (and contradicts the
use of strnlen in glibc itself).
[1]
https://sourceware.org/git/?p=glibc.git;a=commit;h=2cc4b9cce51643ec299e97450ccde4deeecfb083
[2]
https://sourceware.org/git/?p=glibc.git;a=blob;f=manual/string.texi;h=016fd0b9a05f3126a1594e942c5e6da0669d0410;hb=HEAD#l313
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>From glibc-bugs-return-30792-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 30 14:51:52 2015
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From: "heiko at hexco dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/19418] New: iconv should stop reading from 'inbuf' when 'outbytesleft' is zero
Date: Wed, 30 Dec 2015 14:51:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19418
Bug ID: 19418
Summary: iconv should stop reading from 'inbuf' when
'outbytesleft' is zero
Product: glibc
Version: 2.19
Status: NEW
Keywords: std-posix
Severity: normal
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Component: locale
Assignee: unassigned at sourceware dot org
Reporter: heiko at hexco dot de
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Created attachment 8871
--> https://sourceware.org/bugzilla/attachment.cgi?id=8871&action=edit
test programm that demonstrates that iconv reads from inbuf even if
outbytesleft == 0
Quote from the opengroup description
(http://pubs.opengroup.org/onlinepubs/009695399/functions/iconv.html):
If the output buffer is not large enough to hold the entire converted input,
conversion shall stop just prior to the input bytes that would cause the output
buffer to overflow.
= end quote =
What I see instead is that iconv() reads 'inbytesleft' unconditionally, when at
least one character had been converted.
I have added a test program to demonstrate the issue. (Compile with 'gcc
-fsanitize=address -g -o test_iconv test_iconv.c').
(There are two variants: one with memory from the heap (preferred)
and one with an anonymously memory mapped region).
I am converting "1" from UTF-8 to UCS-2BE. 'outbuf' has two bytes, so
'outbytesleft' is initialized to 2.
It seems to me that 'outbytesleft' is not checked before reading from 'inbuf'.
Three calls are done with 'inbytesleft' set to 1, 2 and 3.
Expected behaviour would be in each case:
read one byte input,
convert it to 2 bytes output,
place it in the outbuf,
increment pointers, decrement counters,
check if there is space left in the 'outbuf',
and since there is no space left, terminate the loop.
-
Address sanitizer confirms, that up to 3 bytes are read instead.
This is done on AMD64 on Ubuntu, with gcc 5.3.
Best regards, Heiko
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>From glibc-bugs-return-30793-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 30 20:58:38 2015
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Subject: [Bug localedata/19010] en_ID: new locale for Indonesian English
Date: Wed, 30 Dec 2015 20:58:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|en_ID: wew locale for |en_ID: new locale for
|Indonesian English |Indonesian English
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>From glibc-bugs-return-30794-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 31 00:27:22 2015
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Subject: [Bug libc/19408] linux personality syscall wrapper may erroneously return an error on 32-bit architectures
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit e0043e17dfc52fe1702746543127cb4a87232bcd
Author: Dmitry V. Levin <ldv@altlinux.org>
Date: Sun Dec 27 16:30:02 2015 +0000
Fix linux personality syscall wrapper
The personality system call, starting with linux kernel commit
v2.6.29-6609-g11d06b2a1e5658f448a308aa3beb97bacd64a940, always
successfully changes the personality if requested. The syscall
wrapper, however, still can return an error in the following cases:
- the value returned by the system call looks like an error
due to architecture limitations of 32-bit kernels;
- a personality greater than 0xffffffff is passed to the system call,
and the 64-bit kernel does not have commit
v2.6.35-rc1-372-g485d527686850d68a0e9006dd9904f19f122485e
that would truncate this value to unsigned int;
- on sparc64, the value returned by the system call looks like an error
due to sparc64 kernel sign extension bug.
The solution is three-fold:
- move generic syscalls.list personality entry to generic 64-bit
syscalls.list file;
- for each 32-bit architecture that use negated errno semantics,
add a NOERRNO personality entry to their syscalls.list file;
- for sparc64 and 32-bit architectures that use dedicated registers
to flag syscall errors, add a wrapper around personality syscall;
if the system call return value is flagged as an error, this wrapper
returns the negated "would be errno" value, otherwise it returns
the system call return value; on sparc64, it also truncates the
personality argument to unsigned int before passing it to the kernel.
[BZ #19408]
* sysdeps/unix/sysv/linux/personality.c: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/personality.c: Likewise.
* sysdeps/unix/sysv/linux/tst-personality.c: Likewise.
* sysdeps/unix/sysv/linux/Makefile [$(subdir) == misc]
(sysdep_routines): Add personality.
(tests): Add tst-personality.
* sysdeps/unix/sysv/linux/syscalls.list (personality): Move ...
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: ... here.
* sysdeps/unix/sysv/linux/arm/syscalls.list (personality): New entry.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/i386/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/m68k/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (personality):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list (personality):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list (personality):
Likewise.
* sysdeps/unix/sysv/linux/sh/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list (personality):
Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 25 ++++++++++
sysdeps/unix/sysv/linux/Makefile | 5 +-
sysdeps/unix/sysv/linux/arm/syscalls.list | 2 +
sysdeps/unix/sysv/linux/hppa/syscalls.list | 1 +
sysdeps/unix/sysv/linux/i386/syscalls.list | 2 +
sysdeps/unix/sysv/linux/m68k/syscalls.list | 1 +
sysdeps/unix/sysv/linux/microblaze/syscalls.list | 1 +
.../unix/sysv/linux/mips/mips64/n32/syscalls.list | 2 +
sysdeps/unix/sysv/linux/personality.c | 49 ++++++++++++++++++++
sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list | 1 +
sysdeps/unix/sysv/linux/sh/syscalls.list | 2 +
.../unix/sysv/linux/sparc/sparc64/personality.c | 3 +
sysdeps/unix/sysv/linux/syscalls.list | 1 -
sysdeps/unix/sysv/linux/tst-personality.c | 45 ++++++++++++++++++
sysdeps/unix/sysv/linux/wordsize-64/syscalls.list | 1 +
sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list | 1 +
16 files changed, 139 insertions(+), 3 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/personality.c
create mode 100644 sysdeps/unix/sysv/linux/sparc/sparc64/personality.c
create mode 100644 sysdeps/unix/sysv/linux/tst-personality.c
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Subject: [Bug libc/19408] linux personality syscall wrapper may erroneously return an error on 32-bit architectures
Date: Thu, 31 Dec 2015 00:33:00 -0000
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Dmitry V. Levin <ldv at altlinux dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from Dmitry V. Levin <ldv at altlinux dot org> ---
Fixed in master.
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Subject: [Bug stdio/17269] _IO_wstr_overflow integer overflow
Date: Thu, 31 Dec 2015 12:47:00 -0000
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=325241608584653c1275a2ea28ce349a04fc4d28
commit 325241608584653c1275a2ea28ce349a04fc4d28
Author: Paul Pluzhnikov <ppluzhnikov@google.com>
Date: Sun Feb 22 12:01:47 2015 -0800
Fix BZ #17269 -- _IO_wstr_overflow integer overflow
(cherry picked from commit bdf1ff052a8e23d637f2c838fa5642d78fcedc33)
Conflicts:
NEWS
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=161a7ef860561b0738f953c533eb8920cbf0b813
commit 161a7ef860561b0738f953c533eb8920cbf0b813
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Feb 26 14:55:24 2015 +0100
Fix read past end of pattern in fnmatch (bug 18032)
(cherry picked from commit 4a28f4d55a6cc33474c0792fe93b5942d81bf185)
Conflicts:
NEWS
posix/tst-fnmatch3.c
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f0cb70a25452585ff950b3a89f811ea3d473ae83
commit f0cb70a25452585ff950b3a89f811ea3d473ae83
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Oct 6 13:12:36 2015 +0200
Harden tls_dtor_list with pointer mangling [BZ #19018]
(cherry picked from commit f586e1328681b400078c995a0bb6ad301ef73549)
Conflicts:
NEWS
stdlib/cxa_thread_atexit_impl.c
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=80e44fad705561e39d8001c8258a8bae9c149fc7
commit 80e44fad705561e39d8001c8258a8bae9c149fc7
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Oct 15 09:23:07 2015 +0200
Always enable pointer guard [BZ #18928]
Honoring the LD_POINTER_GUARD environment variable in AT_SECURE mode
has security implications. This commit enables pointer guard
unconditionally, and the environment variable is now ignored.
[BZ #18928]
* sysdeps/generic/ldsodefs.h (struct rtld_global_ro): Remove
_dl_pointer_guard member.
* elf/rtld.c (_rtld_global_ro): Remove _dl_pointer_guard
initializer.
(security_init): Always set up pointer guard.
(process_envvars): Do not process LD_POINTER_GUARD.
(cherry picked from commit a014cecd82b71b70a6a843e250e06b541ad524f7)
Conflicts:
NEWS
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 30 +++++++++++++++++++++++++++
NEWS | 5 +++-
elf/rtld.c | 15 +++---------
libio/wstrops.c | 8 ++++++-
posix/fnmatch_loop.c | 5 +--
stdlib/tst-system.c => posix/tst-fnmatch3.c | 16 ++++++++------
stdlib/cxa_thread_atexit_impl.c | 12 +++++++++-
sysdeps/generic/ldsodefs.h | 3 --
8 files changed, 66 insertions(+), 28 deletions(-)
copy stdlib/tst-system.c => posix/tst-fnmatch3.c (72%)
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/18032] buffer overflow (read past end of buffer) in internal_fnmatch
Date: Thu, 31 Dec 2015 12:47:00 -0000
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commit 325241608584653c1275a2ea28ce349a04fc4d28
Author: Paul Pluzhnikov <ppluzhnikov@google.com>
Date: Sun Feb 22 12:01:47 2015 -0800
Fix BZ #17269 -- _IO_wstr_overflow integer overflow
(cherry picked from commit bdf1ff052a8e23d637f2c838fa5642d78fcedc33)
Conflicts:
NEWS
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=161a7ef860561b0738f953c533eb8920cbf0b813
commit 161a7ef860561b0738f953c533eb8920cbf0b813
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Feb 26 14:55:24 2015 +0100
Fix read past end of pattern in fnmatch (bug 18032)
(cherry picked from commit 4a28f4d55a6cc33474c0792fe93b5942d81bf185)
Conflicts:
NEWS
posix/tst-fnmatch3.c
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f0cb70a25452585ff950b3a89f811ea3d473ae83
commit f0cb70a25452585ff950b3a89f811ea3d473ae83
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Oct 6 13:12:36 2015 +0200
Harden tls_dtor_list with pointer mangling [BZ #19018]
(cherry picked from commit f586e1328681b400078c995a0bb6ad301ef73549)
Conflicts:
NEWS
stdlib/cxa_thread_atexit_impl.c
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=80e44fad705561e39d8001c8258a8bae9c149fc7
commit 80e44fad705561e39d8001c8258a8bae9c149fc7
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Oct 15 09:23:07 2015 +0200
Always enable pointer guard [BZ #18928]
Honoring the LD_POINTER_GUARD environment variable in AT_SECURE mode
has security implications. This commit enables pointer guard
unconditionally, and the environment variable is now ignored.
[BZ #18928]
* sysdeps/generic/ldsodefs.h (struct rtld_global_ro): Remove
_dl_pointer_guard member.
* elf/rtld.c (_rtld_global_ro): Remove _dl_pointer_guard
initializer.
(security_init): Always set up pointer guard.
(process_envvars): Do not process LD_POINTER_GUARD.
(cherry picked from commit a014cecd82b71b70a6a843e250e06b541ad524f7)
Conflicts:
NEWS
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 30 +++++++++++++++++++++++++++
NEWS | 5 +++-
elf/rtld.c | 15 +++---------
libio/wstrops.c | 8 ++++++-
posix/fnmatch_loop.c | 5 +--
stdlib/tst-system.c => posix/tst-fnmatch3.c | 16 ++++++++------
stdlib/cxa_thread_atexit_impl.c | 12 +++++++++-
sysdeps/generic/ldsodefs.h | 3 --
8 files changed, 66 insertions(+), 28 deletions(-)
copy stdlib/tst-system.c => posix/tst-fnmatch3.c (72%)
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19018] Mangle function pointers in tls_dtor_list
Date: Thu, 31 Dec 2015 12:47:00 -0000
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commit 325241608584653c1275a2ea28ce349a04fc4d28
Author: Paul Pluzhnikov <ppluzhnikov@google.com>
Date: Sun Feb 22 12:01:47 2015 -0800
Fix BZ #17269 -- _IO_wstr_overflow integer overflow
(cherry picked from commit bdf1ff052a8e23d637f2c838fa5642d78fcedc33)
Conflicts:
NEWS
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=161a7ef860561b0738f953c533eb8920cbf0b813
commit 161a7ef860561b0738f953c533eb8920cbf0b813
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Feb 26 14:55:24 2015 +0100
Fix read past end of pattern in fnmatch (bug 18032)
(cherry picked from commit 4a28f4d55a6cc33474c0792fe93b5942d81bf185)
Conflicts:
NEWS
posix/tst-fnmatch3.c
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f0cb70a25452585ff950b3a89f811ea3d473ae83
commit f0cb70a25452585ff950b3a89f811ea3d473ae83
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Oct 6 13:12:36 2015 +0200
Harden tls_dtor_list with pointer mangling [BZ #19018]
(cherry picked from commit f586e1328681b400078c995a0bb6ad301ef73549)
Conflicts:
NEWS
stdlib/cxa_thread_atexit_impl.c
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=80e44fad705561e39d8001c8258a8bae9c149fc7
commit 80e44fad705561e39d8001c8258a8bae9c149fc7
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Oct 15 09:23:07 2015 +0200
Always enable pointer guard [BZ #18928]
Honoring the LD_POINTER_GUARD environment variable in AT_SECURE mode
has security implications. This commit enables pointer guard
unconditionally, and the environment variable is now ignored.
[BZ #18928]
* sysdeps/generic/ldsodefs.h (struct rtld_global_ro): Remove
_dl_pointer_guard member.
* elf/rtld.c (_rtld_global_ro): Remove _dl_pointer_guard
initializer.
(security_init): Always set up pointer guard.
(process_envvars): Do not process LD_POINTER_GUARD.
(cherry picked from commit a014cecd82b71b70a6a843e250e06b541ad524f7)
Conflicts:
NEWS
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 30 +++++++++++++++++++++++++++
NEWS | 5 +++-
elf/rtld.c | 15 +++---------
libio/wstrops.c | 8 ++++++-
posix/fnmatch_loop.c | 5 +--
stdlib/tst-system.c => posix/tst-fnmatch3.c | 16 ++++++++------
stdlib/cxa_thread_atexit_impl.c | 12 +++++++++-
sysdeps/generic/ldsodefs.h | 3 --
8 files changed, 66 insertions(+), 28 deletions(-)
copy stdlib/tst-system.c => posix/tst-fnmatch3.c (72%)
--
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/18928] LD_POINTER_GUARD is not ignored for privileged binaries
Date: Thu, 31 Dec 2015 12:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=18928
--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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The branch, release/2.18/master has been updated
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via f0cb70a25452585ff950b3a89f811ea3d473ae83 (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=325241608584653c1275a2ea28ce349a04fc4d28
commit 325241608584653c1275a2ea28ce349a04fc4d28
Author: Paul Pluzhnikov <ppluzhnikov@google.com>
Date: Sun Feb 22 12:01:47 2015 -0800
Fix BZ #17269 -- _IO_wstr_overflow integer overflow
(cherry picked from commit bdf1ff052a8e23d637f2c838fa5642d78fcedc33)
Conflicts:
NEWS
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=161a7ef860561b0738f953c533eb8920cbf0b813
commit 161a7ef860561b0738f953c533eb8920cbf0b813
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Feb 26 14:55:24 2015 +0100
Fix read past end of pattern in fnmatch (bug 18032)
(cherry picked from commit 4a28f4d55a6cc33474c0792fe93b5942d81bf185)
Conflicts:
NEWS
posix/tst-fnmatch3.c
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f0cb70a25452585ff950b3a89f811ea3d473ae83
commit f0cb70a25452585ff950b3a89f811ea3d473ae83
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Oct 6 13:12:36 2015 +0200
Harden tls_dtor_list with pointer mangling [BZ #19018]
(cherry picked from commit f586e1328681b400078c995a0bb6ad301ef73549)
Conflicts:
NEWS
stdlib/cxa_thread_atexit_impl.c
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=80e44fad705561e39d8001c8258a8bae9c149fc7
commit 80e44fad705561e39d8001c8258a8bae9c149fc7
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Oct 15 09:23:07 2015 +0200
Always enable pointer guard [BZ #18928]
Honoring the LD_POINTER_GUARD environment variable in AT_SECURE mode
has security implications. This commit enables pointer guard
unconditionally, and the environment variable is now ignored.
[BZ #18928]
* sysdeps/generic/ldsodefs.h (struct rtld_global_ro): Remove
_dl_pointer_guard member.
* elf/rtld.c (_rtld_global_ro): Remove _dl_pointer_guard
initializer.
(security_init): Always set up pointer guard.
(process_envvars): Do not process LD_POINTER_GUARD.
(cherry picked from commit a014cecd82b71b70a6a843e250e06b541ad524f7)
Conflicts:
NEWS
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 30 +++++++++++++++++++++++++++
NEWS | 5 +++-
elf/rtld.c | 15 +++---------
libio/wstrops.c | 8 ++++++-
posix/fnmatch_loop.c | 5 +--
stdlib/tst-system.c => posix/tst-fnmatch3.c | 16 ++++++++------
stdlib/cxa_thread_atexit_impl.c | 12 +++++++++-
sysdeps/generic/ldsodefs.h | 3 --
8 files changed, 66 insertions(+), 28 deletions(-)
copy stdlib/tst-system.c => posix/tst-fnmatch3.c (72%)
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>From glibc-bugs-return-30800-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 31 14:20:41 2015
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From: "heiko at hexco dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/19418] iconv should stop reading from 'inbuf' when 'outbytesleft' is zero
Date: Thu, 31 Dec 2015 14:20:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19418
--- Comment #1 from Heiko Eißfeldt <heiko at hexco dot de> ---
The iconv() implementations from FreeBSD and Solaris do not have this problem.
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>From glibc-bugs-return-30801-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 31 16:49:58 2015
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/16009] Possible buffer overflow in strxfrm
Date: Thu, 31 Dec 2015 16:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=16009
--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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The branch, release/2.18/master has been updated
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from 325241608584653c1275a2ea28ce349a04fc4d28 (commit)
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b057b4813c9f05c3cedff0c74b58c9c9d583f09f
commit b057b4813c9f05c3cedff0c74b58c9c9d583f09f
Author: Leonhard Holz <leonhard.holz@web.de>
Date: Tue Jan 13 11:33:56 2015 +0530
Fix memory handling in strxfrm_l [BZ #16009]
[Modified from the original email by Siddhesh Poyarekar]
This patch solves bug #16009 by implementing an additional path in
strxfrm that does not depend on caching the weight and rule indices.
In detail the following changed:
* The old main loop was factored out of strxfrm_l into the function
do_xfrm_cached to be able to alternativly use the non-caching version
do_xfrm.
* strxfrm_l allocates a a fixed size array on the stack. If this is not
sufficiant to store the weight and rule indices, the non-caching path is
taken. As the cache size is not dependent on the input there can be no
problems with integer overflows or stack allocations greater than
__MAX_ALLOCA_CUTOFF. Note that malloc-ing is not possible because the
definition of strxfrm does not allow an oom errorhandling.
* The uncached path determines the weight and rule index for every char
and for every pass again.
* Passing all the locale data array by array resulted in very long
parameter lists, so I introduced a structure that holds them.
* Checking for zero src string has been moved a bit upwards, it is
before the locale data initialization now.
* To verify that the non-caching path works correct I added a test run
to localedata/sort-test.sh & localedata/xfrm-test.c where all strings
are patched up with spaces so that they are too large for the caching path.
(cherry picked from commit 0f9e585480edcdf1e30dc3d79e24b84aeee516fa)
Conflicts:
NEWS
string/strxfrm_l.c
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 16 ++
NEWS | 4 +-
localedata/sort-test.sh | 6 +
localedata/xfrm-test.c | 52 +++++-
string/strxfrm_l.c | 499 ++++++++++++++++++++++++++++++++++++++---------
5 files changed, 473 insertions(+), 104 deletions(-)
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>From glibc-bugs-return-30802-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 31 19:16:44 2015
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/19403] cross-compiling fails to install
Date: Thu, 31 Dec 2015 19:16:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
All your glibc configure commands are incorrect. --build must be the system
you are running the build on (x86_64-linux-gnu) and --host must be the system
glibc will run on (mips-linux-gnu). Because glibc is not a compilation tool,
--target makes no sense when configuring glibc.
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^ permalink raw reply [flat|nested] 17+ messages in thread
* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (5 preceding siblings ...)
2015-10-31 20:27 ` bugdal at aerifal dot cx
@ 2021-08-17 6:25 ` fweimer at redhat dot com
2021-08-17 12:01 ` fweimer at redhat dot com
` (8 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: fweimer at redhat dot com @ 2021-08-17 6:25 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
*** Bug 19193 has been marked as a duplicate of this bug. ***
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (6 preceding siblings ...)
2021-08-17 6:25 ` fweimer at redhat dot com
@ 2021-08-17 12:01 ` fweimer at redhat dot com
2021-08-17 12:44 ` fweimer at redhat dot com
` (7 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: fweimer at redhat dot com @ 2021-08-17 12:01 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Status|NEW |ASSIGNED
--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
I believe we should fix bug 19193 separately.
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (7 preceding siblings ...)
2021-08-17 12:01 ` fweimer at redhat dot com
@ 2021-08-17 12:44 ` fweimer at redhat dot com
2021-08-17 13:52 ` fweimer at redhat dot com
` (6 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: fweimer at redhat dot com @ 2021-08-17 12:44 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1994068
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (8 preceding siblings ...)
2021-08-17 12:44 ` fweimer at redhat dot com
@ 2021-08-17 13:52 ` fweimer at redhat dot com
2021-09-13 10:41 ` cvs-commit at gcc dot gnu.org
` (5 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: fweimer at redhat dot com @ 2021-08-17 13:52 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
Patches posted:
https://sourceware.org/pipermail/libc-alpha/2021-August/130207.html
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (9 preceding siblings ...)
2021-08-17 13:52 ` fweimer at redhat dot com
@ 2021-09-13 10:41 ` cvs-commit at gcc dot gnu.org
2021-09-13 10:46 ` fweimer at redhat dot com
` (4 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-09-13 10:41 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8af8456004edbab71f8903a60a3cae442cf6fe69
commit 8af8456004edbab71f8903a60a3cae442cf6fe69
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Sep 13 11:06:08 2021 +0200
nptl: pthread_kill, pthread_cancel should not fail after exit (bug 19193)
This closes one remaining race condition related to bug 12889: if
the thread already exited on the kernel side, returning ESRCH
is not correct because that error is reserved for the thread IDs
(pthread_t values) whose lifetime has ended. In case of a
kernel-side exit and a valid thread ID, no signal needs to be sent
and cancellation does not have an effect, so just return 0.
sysdeps/pthread/tst-kill4.c triggers undefined behavior and is
removed with this commit.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (10 preceding siblings ...)
2021-09-13 10:41 ` cvs-commit at gcc dot gnu.org
@ 2021-09-13 10:46 ` fweimer at redhat dot com
2021-09-13 12:20 ` cvs-commit at gcc dot gnu.org
` (3 subsequent siblings)
15 siblings, 0 replies; 17+ messages in thread
From: fweimer at redhat dot com @ 2021-09-13 10:46 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.35
--- Comment #8 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for 2.35 via:
commit 526c3cf11ee9367344b6b15d669e4c3cb461a2be
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Sep 13 11:06:08 2021 +0200
nptl: Fix race between pthread_kill and thread exit (bug 12889)
A new thread exit lock and flag are introduced. They are used to
detect that the thread is about to exit or has exited in
__pthread_kill_internal, and the signal is not sent in this case.
The test sysdeps/pthread/tst-pthread_cancel-select-loop.c is derived
from a downstream test originally written by Marek Polacek.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (11 preceding siblings ...)
2021-09-13 10:46 ` fweimer at redhat dot com
@ 2021-09-13 12:20 ` cvs-commit at gcc dot gnu.org
2021-09-21 13:05 ` fweimer at redhat dot com
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15 siblings, 0 replies; 17+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-09-13 12:20 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.34/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3abf3bd4edc86fb28c099cc85203cb46a811e0b8
commit 3abf3bd4edc86fb28c099cc85203cb46a811e0b8
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Sep 13 11:06:08 2021 +0200
nptl: pthread_kill, pthread_cancel should not fail after exit (bug 19193)
This closes one remaining race condition related to bug 12889: if
the thread already exited on the kernel side, returning ESRCH
is not correct because that error is reserved for the thread IDs
(pthread_t values) whose lifetime has ended. In case of a
kernel-side exit and a valid thread ID, no signal needs to be sent
and cancellation does not have an effect, so just return 0.
sysdeps/pthread/tst-kill4.c triggers undefined behavior and is
removed with this commit.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
(cherry picked from commit 8af8456004edbab71f8903a60a3cae442cf6fe69)
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (12 preceding siblings ...)
2021-09-13 12:20 ` cvs-commit at gcc dot gnu.org
@ 2021-09-21 13:05 ` fweimer at redhat dot com
2021-09-23 8:54 ` cvs-commit at gcc dot gnu.org
2021-09-23 9:04 ` cvs-commit at gcc dot gnu.org
15 siblings, 0 replies; 17+ messages in thread
From: fweimer at redhat dot com @ 2021-09-21 13:05 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=28361
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (13 preceding siblings ...)
2021-09-21 13:05 ` fweimer at redhat dot com
@ 2021-09-23 8:54 ` cvs-commit at gcc dot gnu.org
2021-09-23 9:04 ` cvs-commit at gcc dot gnu.org
15 siblings, 0 replies; 17+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-09-23 8:54 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2849e2f53311b66853cb5159b64cba2bddbfb854
commit 2849e2f53311b66853cb5159b64cba2bddbfb854
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Sep 23 09:55:54 2021 +0200
nptl: Avoid setxid deadlock with blocked signals in thread exit [BZ #28361]
As part of the fix for bug 12889, signals are blocked during
thread exit, so that application code cannot run on the thread that
is about to exit. This would cause problems if the application
expected signals to be delivered after the signal handler revealed
the thread to still exist, despite pthread_kill can no longer be used
to send signals to it. However, glibc internally uses the SIGSETXID
signal in a way that is incompatible with signal blocking, due to the
way the setxid handshake delays thread exit until the setxid operation
has completed. With a blocked SIGSETXID, the handshake can never
complete, causing a deadlock.
As a band-aid, restore the previous handshake protocol by not blocking
SIGSETXID during thread exit.
The new test sysdeps/pthread/tst-pthread-setuid-loop.c is based on
a downstream test by Martin Osvald.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
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* [Bug nptl/12889] Race condition in pthread_kill
2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
` (14 preceding siblings ...)
2021-09-23 8:54 ` cvs-commit at gcc dot gnu.org
@ 2021-09-23 9:04 ` cvs-commit at gcc dot gnu.org
15 siblings, 0 replies; 17+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-09-23 9:04 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12889
--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.34/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=33adeaa3e2b9143c38884bc5aa65ded222ed274e
commit 33adeaa3e2b9143c38884bc5aa65ded222ed274e
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Sep 23 09:55:54 2021 +0200
nptl: Avoid setxid deadlock with blocked signals in thread exit [BZ #28361]
As part of the fix for bug 12889, signals are blocked during
thread exit, so that application code cannot run on the thread that
is about to exit. This would cause problems if the application
expected signals to be delivered after the signal handler revealed
the thread to still exist, despite pthread_kill can no longer be used
to send signals to it. However, glibc internally uses the SIGSETXID
signal in a way that is incompatible with signal blocking, due to the
way the setxid handshake delays thread exit until the setxid operation
has completed. With a blocked SIGSETXID, the handshake can never
complete, causing a deadlock.
As a band-aid, restore the previous handshake protocol by not blocking
SIGSETXID during thread exit.
The new test sysdeps/pthread/tst-pthread-setuid-loop.c is based on
a downstream test by Martin Osvald.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit 2849e2f53311b66853cb5159b64cba2bddbfb854)
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2011-06-15 0:39 [Bug nptl/12889] New: Race condition in pthread_kill bugdal at aerifal dot cx
2011-06-18 23:35 ` [Bug nptl/12889] " ppluzhnikov at google dot com
2012-04-29 3:04 ` bugdal at aerifal dot cx
2014-06-27 13:11 ` fweimer at redhat dot com
2015-10-31 12:08 ` fweimer at redhat dot com
2015-10-31 12:37 ` schwab@linux-m68k.org
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