Commit Graph

26796 Commits

Author SHA1 Message Date
Joseph Myers
4c327f2ad8 Fix ldbl-128ibm expm1l on large arguments (bug 16408).
This patch fixes bug 16408, ldbl-128ibm expm1l returning NaN for some
large arguments.

The basic problem is that the approach of converting the exponent to
the form n * log(2) + y, where -0.5 <= y <= 0.5, then computing 2^n *
expm1(y) + (2^n - 1) falls over when 2^n overflows (starting slightly
before the point where expm1 overflows, when y is negative and n is
the least integer for which 2^n overflows).  The ldbl-128 code, and
the x86/x86_64 code, make expm1l fall back to expl for large positive
arguments to avoid this issue.  This patch makes the ldbl-128ibm code
do the same.  (The problem appears for the particular argument in the
testsuite because the ldbl-128ibm code also uses an overflow threshold
that's for ldbl-128 and is too big for ldbl-128ibm, but the problem
described applies for large non-overflowing cases as well, although
during the freeze is not a suitable time for making the expm1 tests
cover cases close to overflow more thoroughly.)

This leaves some code for large positive arguments in expm1l that is
now dead.  To keep the code for ldbl-128 and ldbl-128ibm similar, and
to avoid unnecessary changes during the freeze, the patch doesn't
remove it; instead I propose to file a bug in Bugzilla as a reminder
that this code (for overflow, including errno setting, and for
arguments of +Inf) is no longer needed and should be removed from both
those expm1l implementations.

Tested powerpc32.

	* sysdeps/ieee754/ldbl-128ibm/s_expm1l.c (__expm1l): Use __expl
	for large positive arguments.
2014-01-08 13:32:39 +00:00
Joseph Myers
6e067a5128 Use separate libc.abilist for MIPS o32 soft float.
Examining MIPS test results showed an ABI test failure that I must
have missed in 2.18 testing: hard-float and soft-float o32 no longer
have the same set of symbols (because of the __mips_fpu_getcw and
__mips_fpu_setcw functions, present for hard-float only, used by
fpu_control.h for hard-float MIPS16) and so need separate ABI test
baselines (they always were ABI-incompatible - the function-calling
interface is different - but previously had the same set of symbols
and versions so didn't need separate baselines).

Tested for hard-float and soft-float o32.

	* sysdeps/unix/sysv/linux/mips/mips32/nptl/libc.abilist: Move to
	....
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/nptl/libc.abilist:
	... here.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/nptl/libc.abilist: New
	file.
2014-01-07 23:58:45 +00:00
Joseph Myers
1f0f206719 Regenerate powerpc-nofpu ulps (again). 2014-01-07 23:32:04 +00:00
Joseph Myers
a5a326f660 Mark more libm tests with xfail-rounding:ldbl-128ibm.
This patch marks more libm tests as expected to fail for ldbl-128ibm
in non-default rounding modes.  Given this, my expm1l fix
<https://sourceware.org/ml/libc-alpha/2014-01/msg00135.html> and my
libgcc fix <http://gcc.gnu.org/ml/gcc-patches/2014-01/msg00157.html>
for spurious overflows, the remaining failures in test-ldouble.out
(for powerpc32 hard float) are small ulps, spurious underflow and
inexact exceptions (the former probably arising from libgcc bugs
though I haven't checked each case; the latter are barely meaningful
for this format anyway when basic arithmetic isn't correctly rounding,
though most of them are probably GCC bug 59412 which doesn't actually
involve long double), missing underflow exceptions from clog, ctan and
ctanh (probably one of the known bugs for another function), and logb
in round-downward mode (bug 887, though it's really a GCC bug that
we're not currently working around).

Tested for powerpc32 hard float.

	* math/auto-libm-test-in: Mark various tests with
	xfail-rounding:ldbl-128ibm.
	* math/auto-libm-test-out: Regenerated.
2014-01-07 22:41:58 +00:00
Joseph Myers
b821f414e4 Fix ldbl-128ibm coshl spurious overflows (bug 16407).
This patch fixes bug 16407, spurious overflows from ldbl-128ibm coshl.
The implementation assumed that a high part (reinterpreted as an
integer) of the absolute value of the argument of 0x408633ce8fb9f87dLL
or more meant overflow, but the actual threshold has high part
0x408633ce8fb9f87eLL (and a negative low part).  The patch adjusts the
threshold accordingly.

sinhl probably has the same issue, but I didn't get that far in adding
tests of special cases (such as just below and above overflow) before
the freeze and during the freeze is not a suitable time to add them
(as they'd require ulps to be regenerated again), so I'm not changing
that function for now; when I add more tests of special cases, we'll
discover whether sinhl indeed has this problem.

Tested powerpc32.

	* sysdeps/ieee754/ldbl-128ibm/e_coshl.c (__ieee754_coshl):
	Increase overflow threshold.
2014-01-07 22:00:04 +00:00
Marcus Shawcroft
196f456b84 [AArch64] Fix FP_ROUNDMODE.
[BZ #16387] Fix FP_ROUNDMODE to extract the correct bits from FPCR.
2014-01-07 16:17:52 +00:00
Marcus Shawcroft
07d55c6c37 [AArch64] Remove sqrt from libm-test-ulps 2014-01-07 16:17:45 +00:00
Ondřej Bílka
94c8a4bc57 Fix integer overflow in vfwprintf. Fixes bug 14286. 2014-01-07 12:05:32 +01:00
Marcus Shawcroft
b513cbf751 [AArch64] Fix CFA adjustment on dynamic linker entry. 2014-01-07 10:29:18 +00:00
Andreas Krebbel
87ded0c382 S/390: Remove __tls_get_addr argument cast. 2014-01-07 09:42:23 +01:00
Andreas Krebbel
c5eebdd084 S/390: Get rid of unused variable warning in dl-machine.h 2014-01-07 09:42:23 +01:00
Andreas Krebbel
05d138ef07 S/390: Make ucontext_t extendible. 2014-01-07 09:42:23 +01:00
Andreas Krebbel
93a45ff1ca S/390: Make jmp_buf extendible. 2014-01-07 09:36:31 +01:00
Mike Frysinger
d5780febe6 ia64: regen libm-test-ulps from scratch
Truncate the file first so as to delete old entries and to lower ULPs
for tests that have improved.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-01-06 20:37:47 -05:00
Mike Frysinger
7157a710e4 ia64: drop large results from libm-test-ulps [BZ #16401]
We don't want to record these test results as a good thing.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-01-06 20:33:31 -05:00
Joseph Myers
eb3fc44b56 Fix ldbl-128 / ldbl-128ibm lgammal spurious underflow (bug 16400).
This patch fixes bug 16400, spurious underflow exceptions for ldbl-128
/ ldbl-128ibm lgammal with small positive arguments, by just using
-__logl (x) as the result in the problem cases (similar to the
previous fix for problems with small negative arguments).

Tested powerpc32, and also tested on mips64 that this does not require
ulps regeneration for the ldbl-128 case.

	* sysdeps/ieee754/ldbl-128/e_lgammal_r.c (__ieee754_lgammal_r):
	Return -__logl (x) for small positive arguments without evaluating
	a polynomial.
2014-01-06 18:20:20 +00:00
Mike Frysinger
5fd3eccbea ia64: regenerate libm-test-ulps
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-01-06 08:22:23 -05:00
Mike Frysinger
c8c9ab8b88 ia64: add __ prefix to pt_all_user_regs/ia64_fpreg [BZ #762]
This addresses a long standing collision between userspace headers and
kernel headers only on ia64 systems.  All other types have a __ prefix
in the ptrace headers except these two.  Let's finally namespace these.

Verified that at least strace still builds after this change, as well
as after deleting all the struct hacks it has specifically for ia64.

URL: https://sourceware.org/bugzilla/show_bug.cgi?id=762
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-01-06 08:11:35 -05:00
Mike Frysinger
9341dde4d5 ptrace.h: add __ prefix to ptrace_peeksiginfo_args
All the other ptrace structures in this file have a __ prefix except this
new one.  This in turn causes build problems for most packages that try to
use ptrace such as strace:

gcc -DHAVE_CONFIG_H -I. -I../..  -I../../linux/x86_64 -I../../linux \
	-I./linux  -Wall -Wwrite-strings -g -O2 -MT process.o -MD -MP \
	-MF .deps/process.Tpo -c -o process.o ../../process.c
In file included from ../../process.c:63:0:
/usr/include/linux/ptrace.h:58:8: error: redefinition of 'struct ptrace_peeksiginfo_args'
 struct ptrace_peeksiginfo_args {
        ^
In file included from ../../defs.h:159:0,
                 from ../../process.c:37:
/usr/include/sys/ptrace.h:191:8: note: originally defined here
 struct ptrace_peeksiginfo_args
        ^

Since this struct was introduced in glibc-2.18, there shouldn't be any
real regressions with adding the __ prefix.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-01-06 08:07:33 -05:00
Allan McRae
4cff0293ef Fix typo in inet/netinet/in.h comment 2014-01-06 11:27:43 +10:00
Andreas Jaeger
75595dcf8a Update ULPs for i386
Update based on testing with GCC 4.8.1 on Intel i7
2014-01-05 21:48:54 +01:00
Allan McRae
dd80481867 Regenerate libc.po 2014-01-05 17:47:49 +10:00
Allan McRae
79c1e1094e Fix gettext call formatting 2014-01-05 17:39:45 +10:00
Mike Frysinger
19f6b98b55 ia64: fix build failure after async tls updates
The recent commit 7f507ee17a added a new
local variable "offset" to tls_get_addr_tail.  This conflicts with the
ia64 code which also declares an offset code inline in this func.  So
have the ia64 code rename its local vars with a prefix that shouldn't
collide with anything else in the future.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-01-04 08:58:08 -05:00
Sami Kerola
0c813d1f3e nscd: list all tables in usage()
Usage output for option --invalidate=TABLE is not helpful without
list of tables.  The list is also missing from nscd(8) manual which
made it pretty difficult to know what are the tables.
2014-01-04 08:44:36 -05:00
Mike Frysinger
20f4a8d993 tst-fanotify: switch to AC_DEFINE
Reported-by: Joseph S. Myers <joseph@codesourcery.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-01-04 08:34:01 -05:00
Joseph Myers
22562bb222 Fix soft-float ldbl-128ibm atan2l signs of zero results (bug 16390).
This patch fixes bug 16390, incorrect signs of zero results from
ldbl-128ibm atan2l, soft-float only.  The problem is a longstanding
GCC bug with fabsl not being correct for signed zero for soft float,
and the fix is using -fno-builtin-fabsl as a workaround, as already
done for various other source files.  Tested powerpc-nofpu.

	* sysdeps/powerpc/nofpu/Makefile [$(subdir) = math]
	(CFLAGS-e_atan2l.c): Use -fno-builtin-fabsl.
2014-01-03 20:56:40 +00:00
Paul Pluzhnikov
0da43124a9 Fix ChangeLog entry. 2014-01-03 11:59:26 -08:00
Adhemerval Zanella
d7ad2d9bad PowerPC: Fix compiler warnings
This patch fixes some compile warnings related to extra tokens at
end of #undef directive from multilib patchset.
2014-01-03 13:29:10 -06:00
Paul Pluzhnikov
dc810f3778 Merge branch 'master' of ssh://sourceware.org/git/glibc 2014-01-03 11:23:16 -08:00
Andrew Hunter
7f507ee17a Async-signal safe TLS.
ChangeLog:

2014-01-03  Andrew Hunter  <ahh@google.com>

	* elf/dl-open.c (): New comment.
	* elf/dl-reloc.c (_dl_try_allocate_static_tls): Use
	atomic_compare_and_exchange_bool_acq
	(_dl_allocate_static_tls): Block signals.
	* elf/dl-tls.c (allocate_and_init): Return void.
	(_dl_update_slotinfo): Block signals, use atomic update.

nptl/ChangeLog:

2014-01-03  Andrew Hunter  <ahh@google.com>

	* nptl/Makefile (tst-tls7): New test.
	* nptl/tst-tls7.c: New file.
	* nptl/tst-tls7mod.c: New file.
	* nptl/allocatestack.c (init_one_static_tls): Use atomic barrier.
2014-01-03 11:22:26 -08:00
Joseph Myers
24db925aa7 Regenerate powerpc-nofpu ulps. 2014-01-03 18:09:05 +00:00
Joseph Myers
7dd009d865 Mark various libm tests with xfail-rounding:ldbl-128ibm.
This patch marks various libm tests with xfail-rounding:ldbl-128ibm,
where the failures appear to relate to GCC bug 59666 (bad libgcc
handling of directed rounding), so as to allow clean libm-test-ulps
regeneration without needing to edit out large ulps for various
functions manually.

Note that this only deals with the cases problematic for ulps
regeneration.  There are plenty of test failures left that do not
affect ulps regeneration - results that are infinities or NaNs but
should be finite, or vice versa, and missing and spurious exceptions -
which should also be resolved during the release testing period.

Tested for powerpc32 (hard float).

	* math/auto-libm-test-in: Mark various tests with
	xfail-rounding:ldbl-128ibm.
	* math/auto-libm-test-out: Regenerated.
2014-01-03 17:08:10 +00:00
Joseph Myers
819e5d50dd Fix ldbl-128ibm logl inaccuracy (bug 16386).
This patch fixes bug 16386, ldbl-128ibm logl inaccuracy (with
consequent inaccuracy for lgammal) for arguments where the high double
is subnormal, which showed up while attempting to regenerate ulps for
powerpc-nofpu for 2.19.  The problem here is logic failing to allow
for subnormals when calculating the exponent of the argument.  Tested
for powerpc-nofpu.

	* sysdeps/ieee754/ldbl-128ibm/e_logl.c (__ieee754_logl): Adjust
	numbers with subnormal high part when calculating exponent.
2014-01-02 16:35:46 +00:00
Joseph Myers
90b6a1e55f Fix ldbl-128ibm asinhl inaccuracy (bug 16385).
This patch fixes bug 16385, ldbl-128ibm asinhl inaccuracy, which
showed up while attempting to regenerate ulps for powerpc-nofpu for
2.19.  The problem here was use of fabs instead of fabsl meaning large
arguments were reduced to the precision of double.  Tested for
powerpc-nofpu.

	* sysdeps/ieee754/ldbl-128ibm/s_asinhl.c (__asinhl): Use fabsl not
	fabs.
2014-01-02 16:34:24 +00:00
Joseph Myers
396e3ecf3e Fix ldbl-128ibm acoshl inaccuracy (bug 16384).
This patch fixes bug 16384, ldbl-128ibm acoshl inaccuracy, which
showed up while attempting to regenerate ulps for powerpc-nofpu for
2.19.  There were two separate problems, use of __log1p instead of
__log1pl and an insufficiently accurate constant value for log 2
(which this patch replaces by use of M_LN2l), each of which could
cause substantial inaccuracy in affected cases.

Tested for powerpc-nofpu.

	* sysdeps/ieee754/ldbl-128ibm/e_acoshl.c (ln2): Initialize with
	M_LN2l.
	(__ieee754_acoshl): Use __log1pl not __log1p.
2014-01-02 16:33:06 +00:00
Ondřej Bílka
6c8dbf00f5 Reformat malloc to gnu style. 2014-01-02 09:40:10 +01:00
Siddhesh Poyarekar
9a3c6a6ff6 Fix return code from getent netgroup when the netgroup is not found (bz #16366)
nscd incorrectly returns a success even when the netgroup in question
is not found and adds a positive result in the cache.  this patch
fixes this behaviour by adding a negative lookup entry to cache and
returning an error when the netgroup is not found.
2014-01-02 10:05:27 +05:30
Siddhesh Poyarekar
d41242129b Fix infinite loop in nscd when netgroup is empty (bz #16365)
Currently, when a user looks up a netgroup that does not have any
members, nscd goes into an infinite loop trying to find members in the
group.  This is because it does not handle cases when getnetgrent
returns an NSS_STATUS_NOTFOUND (which is what it does on empty group).
Fixed to handle this in the same way as NSS_STATUS_RETURN, similar to
what getgrent does by itself.
2014-01-02 10:04:21 +05:30
Marcus Shawcroft
ac49ddc495 [AArch64] Regenerate libm-test-ulps. 2014-01-01 17:58:47 +00:00
Marcus Shawcroft
4513de089b [AArch64] Define ABORT_INSTRUCTION. 2014-01-01 17:58:47 +00:00
Venkataramanan Kumar
9188b6818a [AArch64] Pointer mangling support for AArch64. 2014-01-01 17:58:46 +00:00
Joseph Myers
b06ece6aec Regenerate ARM ulps. 2014-01-01 16:46:17 +00:00
Joseph Myers
5d5841db70 Regenerate MIPS ulps. 2014-01-01 15:54:30 +00:00
Joseph Myers
97b9a0090e Regenerate x86 / x86_64 ulps. 2014-01-01 14:34:38 +00:00
Allan McRae
ddb3687f2a scripts/update-copyrights: adjust configure input file suffix 2014-01-01 22:10:54 +10:00
Allan McRae
88726d48af Update remaining copyright dates
Update copyright years that are not handled by scripts/update-copyright.
2014-01-01 22:02:55 +10:00
Allan McRae
d4697bc93d Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
Mike Frysinger
0d547fcba7 NEWS: mention 16379 as fixed
Reported-by: Joseph S. Myers <joseph@codesourcery.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-12-31 11:23:07 -05:00
Mike Frysinger
c8590f9d9e tst-fanotify: check for linux/fanotify.h existence
We support older kernels that lack this header, so check for it
before we try to use it.

Reported-by: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-12-31 03:16:42 -05:00