Bug 22902

Summary: float128 test failures with GCC 8
Product: glibc Reporter: H.J. Lu <hjl.tools>
Component: mathAssignee: Not yet assigned to anyone <unassigned>
Status: RESOLVED FIXED    
Severity: normal CC: jeremip11
Priority: P2 Flags: fweimer: security-
Version: 2.28   
Target Milestone: 2.28   
Host: Target: i686
Build: Last reconfirmed:
Attachments: Patch

Description H.J. Lu 2018-02-27 19:24:54 UTC
On i686, build glibc with GCC 8 gave

FAIL: math/test-float32-float128-add
FAIL: math/test-float32x-float128-add
FAIL: math/test-float64-float128-add
FAIL: math/test-float64x-float128-add

Failures look like:

Failure: Test: add_upward_float128 (0x1.000002p+0, 0x8p-972)
Result:
 is:          1.00000012e+00   0x1.000002p+0
 should be:   1.00000024e+00   0x1.000004p+0
 difference:  1.19209290e-07   0x1.000000p-23
 ulp       :  1.0000
 max.ulp   :  0.0000

Test suite completed:
  3096 test cases plus 3092 tests for exception flags and
    3092 tests for errno executed.
  156 errors occurred.
Comment 1 jsm-csl@polyomino.org.uk 2018-02-27 22:46:22 UTC
I suspect a GCC bug.

These functions rely on knowing that libgcc's soft-fp for float128 uses 
the x87 rounding mode for 32-bit but the SSE rounding mode for 64-bit - 
but that's not changed at all in GCC 8.  They also rely on expressions 
being evaluated at the right time between floating-point environment 
changes, but the uses of math_force_eval and math_opt_barrier in 
math-narrow.h are intended to ensure that.
Comment 2 H.J. Lu 2018-02-27 22:48:43 UTC
(In reply to joseph@codesourcery.com from comment #1)
> I suspect a GCC bug.
> 
> These functions rely on knowing that libgcc's soft-fp for float128 uses 
> the x87 rounding mode for 32-bit but the SSE rounding mode for 64-bit - 

My GCC is configured with -with-fpmath=sse.
Comment 3 jsm-csl@polyomino.org.uk 2018-02-27 23:24:22 UTC
On Tue, 27 Feb 2018, hjl.tools at gmail dot com wrote:

> https://sourceware.org/bugzilla/show_bug.cgi?id=22902
> 
> --- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
> (In reply to joseph@codesourcery.com from comment #1)
> > I suspect a GCC bug.
> > 
> > These functions rely on knowing that libgcc's soft-fp for float128 uses 
> > the x87 rounding mode for 32-bit but the SSE rounding mode for 64-bit - 
> 
> My GCC is configured with -with-fpmath=sse.

I don't think that should make any difference as regards rounding modes.

fenv_private.h redefines libc_feholdexcept_setroundf128 and 
libc_feupdateenv_testf128 to use the _sse functions in the __x86_64__ 
case.  When defined, float128_private.h redefines 
libc_feholdexcept_setroundl and libc_feupdateenv_testl to use the *f128 
versions.  If not defined, the *l names won't be redefined - but those 
names for i386 also use x87 unconditionally.  And libgcc's 
32/sfp-machine.h always uses fnstcw to get the rounding mode, i.e. always 
uses the x87 rounding mode for float128, which is what glibc expects for 
32-bit for float128.

Maybe there's an issue with exceptions rather than rounding modes?  If so, 
the 32-bit, __SSE_MATH__ case in glibc would need to have a version of 
those two functions that clears SSE exceptions as well as 387 exceptions 
in the first function, and tests/restores both in the second function.
Comment 4 H.J. Lu 2018-02-28 13:13:57 UTC
(In reply to joseph@codesourcery.com from comment #3)
> On Tue, 27 Feb 2018, hjl.tools at gmail dot com wrote:
> 
> > https://sourceware.org/bugzilla/show_bug.cgi?id=22902
> > 
> > --- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
> > (In reply to joseph@codesourcery.com from comment #1)
> > > I suspect a GCC bug.
> > > 
> > > These functions rely on knowing that libgcc's soft-fp for float128 uses 
> > > the x87 rounding mode for 32-bit but the SSE rounding mode for 64-bit - 
> > 
> > My GCC is configured with -with-fpmath=sse.
> 
> I don't think that should make any difference as regards rounding modes.
>

It did make a difference.  These tests pass without SSE math.

> fenv_private.h redefines libc_feholdexcept_setroundf128 and 
> libc_feupdateenv_testf128 to use the _sse functions in the __x86_64__ 
> case.  When defined, float128_private.h redefines 
> libc_feholdexcept_setroundl and libc_feupdateenv_testl to use the *f128 
> versions.  If not defined, the *l names won't be redefined - but those 
> names for i386 also use x87 unconditionally.  And libgcc's 
> 32/sfp-machine.h always uses fnstcw to get the rounding mode, i.e. always 
> uses the x87 rounding mode for float128, which is what glibc expects for 
> 32-bit for float128.
> 
> Maybe there's an issue with exceptions rather than rounding modes?  If so, 
> the 32-bit, __SSE_MATH__ case in glibc would need to have a version of 
> those two functions that clears SSE exceptions as well as 387 exceptions 
> in the first function, and tests/restores both in the second function.

Do you have a patch I can test?
Comment 5 H.J. Lu 2018-02-28 14:44:58 UTC
(In reply to H.J. Lu from comment #4)
> (In reply to joseph@codesourcery.com from comment #3)
> > On Tue, 27 Feb 2018, hjl.tools at gmail dot com wrote:
> > 
> > > https://sourceware.org/bugzilla/show_bug.cgi?id=22902
> > > 
> > > --- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
> > > (In reply to joseph@codesourcery.com from comment #1)
> > > > I suspect a GCC bug.
> > > > 
> > > > These functions rely on knowing that libgcc's soft-fp for float128 uses 
> > > > the x87 rounding mode for 32-bit but the SSE rounding mode for 64-bit - 
> > > 
> > > My GCC is configured with -with-fpmath=sse.
> > 
> > I don't think that should make any difference as regards rounding modes.
> >
> 
> It did make a difference.  These tests pass without SSE math.

It works with GCC 8 configured without -with-fpmath=sse.  Use
-mfpmath=387 to build glibc makes no difference.  Does it mean
that it is a libgcc bug?
Comment 6 H.J. Lu 2018-02-28 15:32:38 UTC
(In reply to H.J. Lu from comment #5)
> (In reply to H.J. Lu from comment #4)
> > (In reply to joseph@codesourcery.com from comment #3)
> > > On Tue, 27 Feb 2018, hjl.tools at gmail dot com wrote:
> > > 
> > > > https://sourceware.org/bugzilla/show_bug.cgi?id=22902
> > > > 
> > > > --- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
> > > > (In reply to joseph@codesourcery.com from comment #1)
> > > > > I suspect a GCC bug.
> > > > > 
> > > > > These functions rely on knowing that libgcc's soft-fp for float128 uses 
> > > > > the x87 rounding mode for 32-bit but the SSE rounding mode for 64-bit - 
> > > > 
> > > > My GCC is configured with -with-fpmath=sse.
> > > 
> > > I don't think that should make any difference as regards rounding modes.
> > >
> > 
> > It did make a difference.  These tests pass without SSE math.
> 
> It works with GCC 8 configured without -with-fpmath=sse.  Use
> -mfpmath=387 to build glibc makes no difference.  Does it mean
> that it is a libgcc bug?

These tests pass even using -mfpmath=sse -msse2 with GCC 8 configured
without -with-fpmath=sse.
Comment 7 jsm-csl@polyomino.org.uk 2018-02-28 17:58:43 UTC
The optimized floating-point state handling in fenv_private.h needs to 
know which floating-point state - x87 or SSE - is used for each 
floating-point type, so that only one state needs updating / testing for 
libm code using that state internally.

It seems that the state used by libgcc for float128 cannot be determined 
from predefines available when glibc is built, because when glibc is 
built for 32-bit with SSE math enabled, libgcc might or might not have 
been built that way, and the way libgcc was built affects which state is 
used for float128.  Indeed, it would also be possible for libgcc to be 
built with SSE math but glibc without.

Thus, this indicates that the optimized functions cannot be used for 
float128 for 32-bit x86.  Instead, libc_feholdexcept_setroundf128 and 
libc_feupdateenv_testf128 should, I suppose, be defined to 
default_libc_feholdexcept_setround and default_libc_feupdateenv_test for 
32-bit x86, if that works to fix this issue.
Comment 8 H.J. Lu 2018-02-28 18:08:04 UTC
(In reply to joseph@codesourcery.com from comment #7)
> 
> Thus, this indicates that the optimized functions cannot be used for 
> float128 for 32-bit x86.  Instead, libc_feholdexcept_setroundf128 and 
> libc_feupdateenv_testf128 should, I suppose, be defined to 
> default_libc_feholdexcept_setround and default_libc_feupdateenv_test for 
> 32-bit x86, if that works to fix this issue.

Do you have a patch for me to try?
Comment 9 Joseph Myers 2018-02-28 18:48:55 UTC
Created attachment 10862 [details]
Patch

This patch doesn't break things for the normal (non-SSE) 32-bit case; not tested for the SSE libgcc case.
Comment 10 H.J. Lu 2018-02-28 19:39:07 UTC
(In reply to Joseph Myers from comment #9)
> Created attachment 10862 [details]
> Patch
> 
> This patch doesn't break things for the normal (non-SSE) 32-bit case; not
> tested for the SSE libgcc case.

Tested with GCC 8 configured -with-fpmath=sse.  It works.  Thanks.
Comment 11 Sourceware Commits 2018-02-28 21:56:48 UTC
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e2bcf6a8551c6b6a7eeed8f84be42b29eef4d0e2

commit e2bcf6a8551c6b6a7eeed8f84be42b29eef4d0e2
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Wed Feb 28 21:55:51 2018 +0000

    Fix i386 fenv_private.h float128 for 32-bit --with-fpmath=sse (bug 22902).
    
    As discussed in bug 22902, the i386 fenv_private.h implementation has
    problems for float128 for the case of 32-bit glibc built with libgcc
    from GCC configured using --with-fpmath=sse.
    
    The optimized floating-point state handling in fenv_private.h needs to
    know which floating-point state - x87 or SSE - is used for each
    floating-point type, so that only one state needs updating / testing
    for libm code using that state internally.  On 32-bit x86, the x87
    rounding mode is always used for float128, but the x87 exception flags
    are only used when libgcc is built using x87 floating-point
    arithmetic; if libgcc is built for SSE arithmetic, the SSE exception
    flags are used.
    
    The choice of arithmetic with which libgcc is built is independent of
    that with which glibc is built.  Thus, since glibc cannot tell the
    choice used in libgcc, the default implementations of
    libc_feholdexcept_setroundf128 and libc_feupdateenv_testf128 (which
    use the <fenv.h> functions, thus using both x87 and SSE state on
    processors that have both) need to be used; this patch updates the
    code accordingly.
    
    Tested for 32-bit x86; HJ reports testing in the --with-fpmath=sse
    case.
    
    	[BZ #22902]
    	* sysdeps/i386/fpu/fenv_private.h [!__x86_64__]
    	(libc_feholdexcept_setroundf128): New macro.
    	[!__x86_64__] (libc_feupdateenv_testf128): Likewise.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                       |    5 +++++
 sysdeps/i386/fpu/fenv_private.h |    6 ++++++
 2 files changed, 11 insertions(+), 0 deletions(-)
Comment 12 Joseph Myers 2018-02-28 21:57:57 UTC
Fixed for 2.28.
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- Log -----------------------------------------------------------------
The GNU C Library
=================

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Changes to build and runtime requirements:

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Security related changes:

  CVE-2016-6261, CVE-2016-6263, CVE-2017-14062: Various vulnerabilities have
  been fixed by removing the glibc-internal IDNA implementation and using
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  CVE-2017-18269: An SSE2-based memmove implementation for the i386
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  CVE-2018-11237: The mempcpy implementation for the Intel Xeon Phi
  architecture could write beyond the target buffer, resulting in a buffer
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The following bugs are resolved with this release:

  [1190] stdio: fgetc()/fread() behaviour is not POSIX compliant
  [6889] manual: 'PWD' mentioned but not specified
  [13575] libc: SSIZE_MAX defined as LONG_MAX is inconsistent with ssize_t,
    when __WORDSIZE != 64
  [13762] regex: re_search etc. should return -2 on memory exhaustion
  [13888] build: /tmp usage during testing
  [13932] math: dbl-64 pow unexpectedly slow for some inputs
  [14092] nptl: Support C11 threads
  [14095] localedata: Review / update collation data from Unicode / ISO
    14651
  [14508] libc: -Wformat warnings
  [14553] libc: Namespace pollution loff_t in sys/types.h
  [14890] libc: Make NT_PRFPREG canonical.
  [15105] libc: Extra PLT references with -Os
  [15512] libc: __bswap_constant_16 not compiled when -Werror -Wsign-
    conversion is given
  [16335] manual: Feature test macro documentation incomplete and out of
    date
  [16552] libc: Unify umount implementations in terms of umount2
  [17082] libc: htons et al.: statement-expressions prevent use on global
    scope with -O1 and higher
  [17343] libc: Signed integer overflow in /stdlib/random_r.c
  [17438] localedata: pt_BR: wrong d_fmt delimiter
  [17662] libc: please implement binding for the new renameat2 syscall
  [17721] libc: __restrict defined as /* Ignore */ even in c11
  [17979] libc: inconsistency between uchar.h and stdint.h
  [18018] dynamic-link: Additional $ORIGIN handling issues (CVE-2011-0536)
  [18023] libc: extend_alloca is broken (questionable pointer comparison,
    horrible machine code)
  [18124] libc: hppa: setcontext erroneously returns -1 as exit code for
    last constant.
  [18471] libc: llseek should be a compat symbol
  [18473] soft-fp: [powerpc-nofpu] __sqrtsf2, __sqrtdf2 should be compat
    symbols
  [18991] nss: nss_files skips large entry in database
  [19239] libc: Including stdlib.h ends up with macros major and minor being
    defined
  [19463] libc: linknamespace failures when compiled with -Os
  [19485] localedata: csb_PL: Update month translations + add yesstr/nostr
  [19527] locale: Normalized charset name not recognized by setlocale
  [19667] string: Missing Sanity Check for malloc calls in file 'testcopy.c'
  [19668] libc: Missing Sanity Check for malloc() in file 'tst-setcontext-
    fpscr.c'
  [19728] network: out of bounds stack read in libidn function
    idna_to_ascii_4i (CVE-2016-6261)
  [19729] network: out of bounds heap read on invalid utf-8 inputs in
    stringprep_utf8_nfkc_normalize (CVE-2016-6263)
  [19818] dynamic-link: Absolute (SHN_ABS) symbols incorrectly relocated by
    the base address
  [20079] libc: Add SHT_X86_64_UNWIND to elf.h
  [20251] libc: 32bit programs pass garbage in struct flock for OFD locks
  [20419] dynamic-link: files with large allocated notes crash in
    open_verify
  [20530] libc: bswap_16 should use __builtin_bswap16() when available
  [20890] dynamic-link: ldconfig: fsync the files before atomic rename
  [20980] manual: CFLAGS environment variable replaces vital options
  [21163] regex: Assertion failure in pop_fail_stack when executing a
    malformed regexp (CVE-2015-8985)
  [21234] manual: use of CFLAGS makes glibc detect no optimization
  [21269] dynamic-link: i386 sigaction sa_restorer handling is wrong
  [21313] build: Compile Error GCC 5.4.0 MIPS with -0S
  [21314] build: Compile Error GCC 5.2.0 MIPS with -0s
  [21508] locale: intl/tst-gettext failure with latest msgfmt
  [21547] localedata: Tibetan script collation broken (Dzongkha and Tibetan)
  [21812] network: getifaddrs() returns entries with ifa_name == NULL
  [21895] libc: ppc64 setjmp/longjmp not fully interoperable with static
    dlopen
  [21942] dynamic-link: _dl_dst_substitute incorrectly handles $ORIGIN: with
    AT_SECURE=1
  [22241] localedata: New locale: Yakut (Sakha) locale for Russia (sah_RU)
  [22247] network: Integer overflow in the decode_digit function in
    puny_decode.c in libidn (CVE-2017-14062)
  [22342] nscd: NSCD not properly caching netgroup
  [22391] nptl: Signal function clear NPTL internal symbols inconsistently
  [22550] localedata: es_ES locale (and  other es_* locales):  collation
    should treat ñ  as a primary different character,  sync the collation
    for Spanish with CLDR
  [22638] dynamic-link: sparc: static binaries are broken if glibc is built
    by gcc configured with --enable-default-pie
  [22639] time: year 2039 bug for localtime etc. on 64-bit platforms
  [22644] string: memmove-sse2-unaligned on 32bit x86 produces garbage when
    crossing 2GB threshold (CVE-2017-18269)
  [22646] localedata: redundant data (LC_TIME) for es_CL, es_CU, es_EC and
    es_BO
  [22735] time: Misleading typo in time.h source comment regarding
    CLOCKS_PER_SECOND
  [22753] libc: preadv2/pwritev2 fallback code should handle offset=-1
  [22761] libc: No trailing `%n' conversion specifier in FMT passed from
    `__assert_perror_fail ()' to `__assert_fail_base ()'
  [22766] libc: all glibc internal dlopen should use RTLD_NOW for robust
    dlopen failures
  [22786] libc: Stack buffer overflow in realpath() if input size is close
    to SSIZE_MAX (CVE-2018-11236)
  [22787] dynamic-link: _dl_check_caller returns false when libc is linked
    through an absolute DT_NEEDED path
  [22792] build: tcb-offsets.h dependency dropped
  [22797] libc: pkey_get() uses non-reserved name of argument
  [22807] libc: PTRACE_* constants missing for powerpc
  [22818] glob: posix/tst-glob_lstat_compat failure on alpha
  [22827] dynamic-link: RISC-V ELF64 parser mis-reads flag in ldconfig
  [22830] malloc: malloc_stats doesn't restore cancellation state on stderr
  [22848] localedata: ca_ES: update date definitions from CLDR
  [22862] build: _DEFAULT_SOURCE is defined even when _ISOC11_SOURCE is
  [22884] math: RISCV fmax/fmin handle signalling NANs incorrectly
  [22896] localedata: Update locale data for an_ES
  [22902] math: float128 test failures with GCC 8
  [22918] libc: multiple common of `__nss_shadow_database'
  [22919] libc: sparc32: backtrace yields infinite backtrace with
    makecontext
  [22926] libc: FTBFS on powerpcspe
  [22932] localedata: lt_LT: Update of abbreviated month names from CLDR
    required
  [22937] localedata: Greek (el_GR, el_CY) locales actually need ab_alt_mon
  [22947] libc: FAIL: misc/tst-preadvwritev2
  [22963] localedata: cs_CZ: Add alternative month names
  [22987] math: [powerpc/sparc] fdim inlines errno, exceptions handling
  [22996] localedata: change LC_PAPER to en_US in es_BO locale
  [22998] dynamic-link: execstack tests are disabled when SELinux is
    disabled
  [23005] network: Crash in __res_context_send after memory allocation
    failure
  [23007] math: strtod cannot handle -nan
  [23024] nss: getlogin_r is performing NSS lookups when loginid isn't set
  [23036] regex: regex equivalence class regression
  [23037] libc: initialize msg_flags to zero for sendmmsg() calls
  [23069] libc: sigaction broken on riscv64-linux-gnu
  [23094] localedata: hr_HR: wrong thousands_sep and mon_thousands_sep
  [23102] dynamic-link: Incorrect parsing of multiple consecutive $variable
    patterns in runpath entries (e.g. $ORIGIN$ORIGIN)
  [23137] nptl: s390: pthread_join sometimes block indefinitely (on 31bit
    and libc build with -Os)
  [23140] localedata: More languages need two forms of month names
  [23145] libc: _init/_fini aren't marked as hidden
  [23152] localedata: gd_GB: Fix typo in "May" (abbreviated)
  [23171] math: C++ iseqsig for long double converts arguments to double
  [23178] nscd: sudo will fail when it is run in concurrent with commands
    that changes /etc/passwd
  [23196] string: __mempcpy_avx512_no_vzeroupper mishandles large copies
    (CVE-2018-11237)
  [23206] dynamic-link: static-pie + dlopen breaks debugger interaction
  [23208] localedata: New locale - Lower Sorbian (dsb)
  [23233] regex: Memory leak in build_charclass_op function in file
    posix/regcomp.c
  [23236] stdio: Harden function pointers in _IO_str_fields
  [23250] nptl: Offset of __private_ss differs from GCC
  [23253] math: tgamma test suite failures on i686 with -march=x86-64
    -mtune=generic -mfpmath=sse
  [23259] dynamic-link: Unsubstituted ${ORIGIN} remains in DT_NEEDED for
    AT_SECURE
  [23264] libc: posix_spawnp wrongly executes ENOEXEC in non compat mode
  [23266] nis: stringop-truncation warning with new gcc8.1 in nisplus-
    parser.c
  [23272] math: fma(INFINITY,INFIITY,0.0) should be INFINITY
  [23277] math: nan function should not have const attribute
  [23279] math: scanf and strtod wrong for some hex floating-point
  [23280] math: wscanf rounds wrong; wcstod is ok for negative numbers and
    directed rounding
  [23290] localedata: IBM273 is not equivalent to ISO-8859-1
  [23303] build: undefined reference to symbol
    '__parse_hwcap_and_convert_at_platform@@GLIBC_2.23'
  [23307] dynamic-link: Absolute symbols whose value is zero ignored in
    lookup
  [23313] stdio: libio vtables validation and standard file object
    interposition
  [23329] libc: The __libc_freeres infrastructure is not properly run across
    DSO boundaries.
  [23349] libc: Various glibc headers no longer compatible with
    <linux/time.h>
  [23351] malloc: Remove unused code related to heap dumps and malloc
    checking
  [23363] stdio: stdio-common/tst-printf.c has non-free license
  [23396] regex: Regex equivalence regression in single-byte locales
  [23422] localedata: oc_FR: More updates of locale data
  [23442] build: New warning with GCC 8
  [23448] libc: Out of bounds access in IBM-1390 converter
  [23456] libc: Wrong index_cpu_LZCNT
  [23458] build: tst-get-cpu-features-static isn't added to tests
  [23459] libc: COMMON_CPUID_INDEX_80000001 isn't populated for Intel
    processors
  [23467] dynamic-link: x86/CET: A property note parser bug

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.28

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

Adhemerval Zanella
Agustina Arzille
Alan Modra
Alexandre Oliva
Amit Pawar
Andreas Schwab
Andrew Senkevich
Andrew Waterman
Aurelien Jarno
Carlos O'Donell
Chung-Lin Tang
DJ Delorie
Daniel Alvarez
David Michael
Dmitry V. Levin
Dragan Stanojevic - Nevidljivi
Florian Weimer
Flávio Cruz
Francois Goichon
Gabriel F. T. Gomes
H.J. Lu
Herman ten Brugge
Hongbo Zhang
Igor Gnatenko
Jesse Hathaway
John David Anglin
Joseph Myers
Leonardo Sandoval
Maciej W. Rozycki
Mark Wielaard
Martin Sebor
Michael Wolf
Mike FABIAN
Patrick McGehearty
Patsy Franklin
Paul Pluzhnikov
Quentin PAGÈS
Rafal Luzynski
Rajalakshmi Srinivasaraghavan
Raymond Nicholson
Rical Jasan
Richard Braun
Robert Buj
Rogerio Alves
Samuel Thibault
Sean McKean
Siddhesh Poyarekar
Stefan Liebler
Steve Ellcey
Sylvain Lesage
Szabolcs Nagy
Thomas Schwinge
Tulio Magno Quites Machado Filho
Valery Timiriliyev
Vincent Chen
Wilco Dijkstra
Zack Weinberg
Zong Li
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Adhemerval Zanella (48):
      Update SH libm-tests-ulps
      Rename nptl-signals.h to internal-signals.h
      Refactor atfork handlers
      Update sparc ulps
      i386: Fix i386 sigaction sa_restorer initialization (BZ#21269)
      nptl: Fix tst-cancel4 sendto tests
      Define _DIRENT_MATCHES_DIRENT64 regardless
      Refactor Linux ARCH_FORK implementation
      powerpc: Fix TLE build for SPE (BZ #22926)
      sparc: Fix arch_fork definition
      Add Changelog reference to BZ#23024
      Assume O_DIRECTORY for opendir
      Filter out NPTL internal signals (BZ #22391)
      linux: Consolidate sigaction implementation
      Update ARM libm-test-ulps.
      Update SPARC libm-test-ulps.
      Update i386 libm-test-ulps.
      Consolidate Linux readdir{64}{_r} implementation
      arm: Remove ununsed ARM code in optimized implementation
      Consolidate Linux getdents{64} implementation
      Fix mips64n32 getdents alias
      Consolidate scandir{at}{64} implementation
      Update hppa libm-test-ulps
      Consolidate alphasort{64} and versionsort{64} implementation
      Consolidate getdirentries{64} implementation
      Consolidate Linux readahead implementation
      Deprecate ustat syscall interface
      Fix ChangeLog from cf2478d53ad commit
      Fix concurrent changes on nscd aware files (BZ #23178)
      posix: Fix posix_spawnp to not execute invalid binaries in non compat mode (BZ#23264)
      Fix Linux fcntl OFD locks for non-LFS architectures (BZ#20251)
      Revert hurd errno.h changes
      Fix hurd expected fcntl version
      posix: Sync gnulib regex implementation
      posix: Fix bug-regex33 after regex sync
      Comment tst-ofdlocks-compat expected failure in some Linux releases
      nptl: Add C11 threads thrd_* functions
      nptl: Add C11 threads mtx_* functions
      nptl: Add C11 threads call_once functions
      nptl: Add C11 threads cnd_* functions
      nptl: Add C11 threads tss_* functions
      nptl: Add abilist symbols for C11 threads
      nptl: Add test cases for ISO C11 threads
      Mention ISO C threads addition
      Fix C11 conformance issues
      Fix ISO C threads installed header and HURD assumption
      Fix Linux fcntl OFD locks on unsupported kernels
      Update SH libm-tests-ulps

Agustina Arzille (2):
      hurd: Rewrite __libc_cleanup_*
      hurd: Reimplement libc locks using mach's gsync

Alan Modra (1):
      R_PARISC_TLS_DTPOFF32 reloc handling

Alexandre Oliva (1):
      Revert:

Amit Pawar (1):
      Use AVX_Fast_Unaligned_Load from Zen onwards.

Andreas Schwab (11):
      Fix uninitialized variable in assert_perror (bug 22761)
      Fix multiple definitions of __nss_*_database (bug 22918)
      RISC-V: add remaining relocations
      Fix crash in resolver on memory allocation failure (bug 23005)
      Fix missing @ before texinfo command
      Add aliases to recognize normalized charset names (bug 19527)
      Fix comment typo
      Remove unneeded setting of errno after malloc failure
      Don't write beyond destination in __mempcpy_avx512_no_vzeroupper (bug 23196)
      Fix out-of-bounds access in IBM-1390 converter (bug 23448)
      Fix out of bounds access in findidxwc (bug 23442)

Andrew Senkevich (1):
      Fix i386 memmove issue (bug 22644).

Andrew Waterman (1):
      RISC-V: fmax/fmin: Handle signalling NaNs correctly.

Aurelien Jarno (4):
      intl/tst-gettext: fix failure with newest msgfmt
      Fix posix/tst-glob_lstat_compat on alpha [BZ #22818]
      sparc32: Add nop before __startcontext to stop unwinding [BZ #22919]
      Add tst-sigaction.c to test BZ #23069

Carlos O'Donell (17):
      Fix -Os log1p, log1pf build (bug 21314).
      Improve DST handling (Bug 23102, Bug 21942, Bug 18018, Bug 23259).
      Fix fallback path in __pthread_mutex_timedlock ().
      Fix comments in _dl_dst_count and _dl_dst_substitute.
      libc: Extend __libc_freeres framework (Bug 23329).
      locale: XFAIL newlocale usage in static binary (Bug 23164)
      Keep expected behaviour for [a-z] and [A-z] (Bug 23393).
      Add missing localedata/en_US.UTF-8.in (Bug 23393).
      Update libc.pot.
      Update NEWS with ISO 14651 update information.
      Update translations for cs, pl, and uk.
      Update translations for bg, de, hr, pt_BR, sv, and vi.
      Update translation for be.
      Update contrib.texi contributions.
      Update tooling versions verified to work with glibc.
      Synchronize translation project PO files.
      Update NEWS, version.h, and features.h for glibc 2.28.

Chung-Lin Tang (1):
      Update sysdeps/nios2/libm-test-ulps

DJ Delorie (5):
      [RISC-V] Fix parsing flags in ELF64 files.
      RISC-V: Do not initialize $gp in TLS macros.
      Update ChangeLog for BZ 22884 - riscv fmax/fmin
      [BZ #22342] Fix netgroup cache keys.
      Update kernel version in syscall-names.list to 4.16.

Daniel Alvarez (1):
      getifaddrs: Don't return ifa entries with NULL names [BZ #21812]

David Michael (1):
      Lookup the startup server through /servers/startup

Dmitry V. Levin (3):
      linux/aarch64: sync sys/ptrace.h with Linux 4.15 [BZ #22433]
      linux/powerpc: sync sys/ptrace.h with Linux 4.15 [BZ #22433, #22807]
      Update translations from the Translation Project

Dragan Stanojevic - Nevidljivi (1):
      hr_HR locale: fix thousands_sep and mon_thousands_sep

Florian Weimer (72):
      preadv2/pwritev2: Handle offset == -1 [BZ #22753]
      Record CVE-2018-6551 in NEWS and ChangeLog [BZ #22774]
      getlogin_r: switch Linux variant to struct scratch_buffer
      elf: Remove ad-hoc restrictions on dlopen callers [BZ #22787]
      ldconfig: Sync temporary files to disk before renaming them [BZ #20890]
      nptl: Move pthread_atfork to libc_nonshared.a
      nptl: Drop libpthread_nonshared.a from libpthread.so
      nptl: Turn libpthread.so into a symbolic link to the real DSO
      malloc: Revert sense of prev_inuse in comments
      Linux i386: tst-bz21269 triggers SIGBUS on some kernels
      support_format_addrinfo: Include unknown error number in result
      inet: Actually build and run tst-deadline
      manual: Move mbstouwcs to an example C file
      manual: Various fixes to the mbstouwcs example, and mbrtowc update
      resolv: Fully initialize struct mmsghdr in send_dg [BZ #23037]
      sunrpc: Remove stray exports without --enable-obsolete-rpc [BZ #23166]
      time: Use 64-bit time values for time zone parsing
      math: Merge strtod_nan_*.h into math-type-macros-*.h
      support: Add TEST_COMPARE_BLOB, support_quote_blob
      math: Reverse include order in <math-type-macros-*.h>
      i386: Drop -mpreferred-stack-boundary=4
      Implement allocate_once for atomic initialization with allocation
      Switch IDNA implementation to libidn2 [BZ #19728] [BZ #19729] [BZ #22247]
      Add references to CVE-2017-18269, CVE-2018-11236, CVE-2018-11237
      stdlib: Additional tests need generated locale dependencies
      support: Add wrappers for pthread_barrierattr_t
      libio: Avoid _allocate_buffer, _free_buffer function pointers [BZ #23236]
      Remove sysdeps/generic/libcidn.abilist
      math: Update i686 ulps
      math: Update i686 ulps (--disable-multi-arch configuration)
      x86: Make strncmp usable from rtld
      scripts/update-abilist.sh: Accept empty list of files to patch
      localedata: Make IBM273 compatible with ISO-8859-1 [BZ #23290]
      Linux: Create Netlink socket with SOCK_CLOEXEC in __check_pf [BZ #15722]
      libio: Avoid ptrdiff_t overflow in IO_validate_vtable
      math: Set 387 and SSE2 rounding mode for tgamma on i386 [BZ #23253]
      nscd restart: Use malloc instead of extend_alloca [BZ #18023]
      nscd: Use struct scratch_buffer, not extend_alloca in most caches [BZ #18023]
      nscd: Switch to struct scratch_buffer in adhstaiX [BZ #18023]
      getgrent_next_nss (compat-initgroups): Remove alloca fallback [BZ #18023]
      _nss_nis_initgroups_dyn: Use struct scratch_buffer [BZ #18023]
      getent: Use dynarray in initgroups_keys [BZ #18023]
      nss_files: Use struct scratch_buffer instead of extend_alloca [BZ #18023]
      libio: Disable vtable validation in case of interposition [BZ #23313]
      support: Add TEST_NO_SETVBUF
      libio: Add tst-vtables, tst-vtables-interposed
      sunrpc: Remove always-defined _RPC_THREAD_SAFE_ macro
      Run thread shutdown functions in an explicit order
      wordexp: Rewrite parse_tilde to use struct scratch_buffer [BZ #18023]
      gethostid (Linux variant): Switch to struct scratch_buffer [BZ #18023]
      _dl_map_object_deps: Use struct scratch_buffer [BZ #18023]
      Remove macros extend_alloca, extend_alloca_account [BZ #18023]
      Use _STRUCT_TIMESPEC as guard in <bits/types/struct_timespec.h> [BZ #23349]
      malloc: Update heap dumping/undumping comments [BZ #23351]
      stdio-common/tst-printf.c: Remove part under a non-free license [BZ #23363]
      testrun.sh: Implement --tool=strace, --tool=valgrind
      Add renameat2 function [BZ #17662]
      Compile debug/stack_chk_fail_local.c with stack protector
      Build csu/elf-init.c and csu/static-reloc.c with stack protector
      conform/conformtest.pl: Escape literal braces in regular expressions
      libio: Implement internal function __libc_readline_unlocked
      nss_files: Fix re-reading of long lines [BZ #18991]
      Fix copyright years in recent commits
      regexec: Fix off-by-one bug in weight comparison [BZ #23036]
      Add the statx function
      Install <bits/statx.h> header
      nptl: Use __mprotect consistently for _STACK_GROWS_UP
      regcomp: Fix off-by-one bug in build_equiv_class [BZ #23396]
      sh: Do not define __ASSUME_STATX
      alpha: mlock2, copy_file_range syscalls were introduced in kernel 4.13
      C11 threads: Fix timeout and locking issues
      htl: Use weak aliases for public symbols

Flávio Cruz (1):
      hurd: Define and pass UTIME_NOW and UTIME_OMIT to new file_utimens RPC

Francois Goichon (1):
      malloc: harden removal from unsorted list

Gabriel F. T. Gomes (3):
      powerpc64*: fix the order of implied sysdeps directories
      Fix parameter type in C++ version of iseqsig (bug 23171)
      ldbl-128ibm-compat: Add printf_size

H.J. Lu (76):
      sparc: Check PIC instead of SHARED in start.S [BZ #22638]
      x86-64: Use __glibc_likely/__glibc_likely in dl-machine.h
      Add a missing ChangeLog item in commit 371b220f620
      Fix a typo in ChangeLog entry
      i386: Use __glibc_likely/__glibc_likely in dl-machine.h
      Add DT_SYMTAB_SHNDX from gABI
      Use ADDRIDX with DT_GNU_HASH
      Define GEN_AS_CONST_HEADERS when generating header files [BZ #22792]
      Fix a typo in ChangeLog (bit_cpu_BIT -> bit_cpu_IBT)
      Fix a typo in ChangeLog: auch_fork -> arch_fork
      Remove hidden __libc_longjmp
      Add $(tests-execstack-$(have-z-execstack)) after defined [BZ #22998]
      Update RWF_SUPPORTED for Linux kernel 4.16 [BZ #22947]
      x86: Use pad in pthread_unwind_buf to preserve shadow stack register
      x86-64/setcontext: Pop the pointer into %rdx after syscall
      cl
      x86-64/swapcontext: Restore the pointer into %rdx after syscall
      x86-64/memset: Mark the debugger symbol as hidden
      x86-64: Remove the unnecessary testl in strlen-avx2.S
      x86: Add sysdeps/x86/ldsodefs.h
      i386: Replace PREINIT_FUNCTION@PLT with *%eax in call
      x86-64: Use IFUNC strncat inside libc.so
      nptl: Remove __ASSUME_PRIVATE_FUTEX
      Initial Fast Short REP MOVSB (FSRM) support
      x86-64: Check Prefer_FSRM in ifunc-memmove.h
      Add a test case for [BZ #23196]
      x86-64: Skip zero length in __mem[pcpy|move|set]_erms
      static-PIE: Update DT_DEBUG for debugger [BZ #23206]
      Mark _init and _fini as hidden [BZ #23145]
      i386: Change offset of __private_ss to 0x30 [BZ #23250]
      benchtests: Add -f/--functions argument
      x86: Rename __glibc_reserved1 to feature_1 in tcbhead_t [BZ #22563]
      x86: Support shadow stack pointer in setjmp/longjmp
      x86_64: Undef SHADOW_STACK_POINTER_OFFSET last
      x86: Support IBT and SHSTK in Intel CET [BZ #21598]
      x86: Always include <dl-cet.h>/cet-tunables.h> for --enable-cet
      x86: Add _CET_ENDBR to functions in crti.S
      x86: Add _CET_ENDBR to functions in dl-tlsdesc.S
      x86-64: Add _CET_ENDBR to STRCMP_SSE42
      i386: Add _CET_ENDBR to indirect jump targets in add_n.S/sub_n.S
      x86_64: Use _CET_NOTRACK in strcmp.S
      x86-64: Use _CET_NOTRACK in strcpy-sse2-unaligned.S
      x86-64: Use _CET_NOTRACK in strcmp-sse42.S
      x86-64: Use _CET_NOTRACK in memcpy-ssse3-back.S
      x86-64: Use _CET_NOTRACK in memcpy-ssse3.S
      i386: Use _CET_NOTRACK in i686/memcmp.S
      i386: Use _CET_NOTRACK in memset-sse2.S
      i386: Use _CET_NOTRACK in memcmp-sse4.S
      i386: Use _CET_NOTRACK in memcpy-ssse3-rep.S
      i386: Use _CET_NOTRACK in memcpy-ssse3.S
      i386: Use _CET_NOTRACK in strcpy-sse2.S
      i386: Use _CET_NOTRACK in strcat-sse2.S
      i386: Use _CET_NOTRACK in memset-sse2-rep.S
      x86-64: Use _CET_NOTRACK in memcmp-sse4.S
      Intel CET: Document --enable-cet
      x86/CET: Document glibc.tune.x86_ibt and glibc.tune.x86_shstk
      INSTALL: Add a note for Intel CET status
      x86-64: Add endbr64 to tst-quadmod[12].S
      x86: Update vfork to pop shadow stack
      Add <bits/indirect-return.h>
      x86/CET: Extend arch_prctl syscall for CET control
      x86: Rename __glibc_reserved2 to ssp_base in tcbhead_t
      x86/CET: Add tests with legacy non-CET shared objects
      Add a test for multiple makecontext calls
      Add another test for setcontext
      Add a test for multiple setcontext calls
      Add tests for setcontext on the context from makecontext
      x86-64/CET: Extend ucontext_t to save shadow stack
      x86/CET: Add a setcontext test for CET
      ia64: Work around incorrect type of IA64 uc_sigmask
      x86: Correct index_cpu_LZCNT [BZ # 23456]
      x86: Populate COMMON_CPUID_INDEX_80000001 for Intel CPUs [BZ #23459]
      Add the missing ChangeLog entry for commit be525a69a66
      x86/CET: Don't parse beyond the note end
      x86: Add tst-get-cpu-features-static to $(tests) [BZ #23458]
      x86/CET: Fix property note parser [BZ #23467]

Herman ten Brugge (1):
      Fix sign of NaN returned by strtod (bug 23007).

Hongbo Zhang (1):
      aarch64: add HXT Phecda core memory operation ifuncs

Igor Gnatenko (1):
      Linux: use reserved name __key in pkey_get [BZ #22797]

Jesse Hathaway (1):
      getlogin_r: return early when linux sentinel value is set

John David Anglin (2):
      Fix ulps for pow on hppa.
      The hppa-linux target still requires an executable stack for kernel

Joseph Myers (110):
      Do not use packed structures in soft-fp.
      Fix m68k bits/fenv.h for no-FPU ColdFire.
      Add ColdFire math-tests.h.
      Move some fenv.h override macros to generic math_private.h.
      Move fenv.h override inline functions to generic math_private.h.
      Add feholdexcept inline in generic math_private.h.
      Remove some math_private.h libc_fe* overrides.
      Remove some math_private.h libc_feholdexcept_setround overrides.
      Move LDBL_CLASSIFY_COMPAT to its own header.
      Update syscall-names.list for 4.15.
      Add MAP_SHARED_VALIDATE from Linux 4.15.
      Add MAP_SYNC from Linux 4.15.
      Add elf.h NT_* macros from Linux 4.15 (bug 14890).
      Add IPV6_FREEBIND from Linux 4.15.
      Add TCP_FASTOPEN_KEY, TCP_FASTOPEN_NO_COOKIE from Linux 4.15.
      Only define loff_t for __USE_MISC (bug 14553).
      Use xmalloc in tst-setcontext-fpscr.c (bug 19668).
      Correct type of SSIZE_MAX for 32-bit (bug 13575).
      Move string/testcopy.c to test-driver.c and xmalloc (bug 19667).
      Fix non-__GNUC__ definitions of __inline and __restrict (bug 17721).
      Unify and simplify bits/byteswap.h, bits/byteswap-16.h headers (bug 14508, bug 15512, bug 17082, bug 20530).
      Fix -Os strcoll, wcscoll, build (bug 21313).
      Fix -Os gnu_dev_* linknamespace, localplt issues (bug 15105, bug 19463).
      Use MPFR 4.0.1 in build-many-glibcs.py.
      Define char16_t, char32_t consistently with uint_least16_t, uint_least32_t (bug 17979).
      Remove unused math/Makefile variable libm-test-incs.
      Add build infrastructure for narrowing libm functions.
      Add test infrastructure for narrowing libm functions.
      Handle narrowing function sNaN test disabling based on argument format.
      Fix narrowing function tests build for powerpc64le.
      Add narrowing add functions.
      Fix -Os feof_unlocked linknamespace, localplt issues (bug 15105, bug 19463).
      Use libc_hidden_* for fputs (bug 15105).
      Use libc_hidden_* for __cmsg_nxthdr (bug 15105).
      Use libc_hidden_* for argz_next, __argz_next (bug 15105).
      Fix hppa local PLT entries for sigprocmask (bug 18124).
      Document use of CC and CFLAGS in more detail (bug 20980, bug 21234).
      Fix -Os ferror_unlocked linknamespace, localplt issues (bug 15105, bug 19463).
      Fix -Os getc_unlocked linknamespace, localplt issues (bug 15105, bug 19463).
      Fix -Os putc_unlocked, fputc_unlocked linknamespace, localplt issues (bug 15105, bug 19463).
      Use libc_hidden_* for tolower, toupper (bug 15105).
      Use libc_hidden_* for atoi (bug 15105).
      Fix another -Os strcoll build issue.
      Fix two more -Os strcoll / wcscoll build failures.
      Use libc_hidden_* for strtoumax (bug 15105).
      Fix i386 fenv_private.h float128 for 32-bit --with-fpmath=sse (bug 22902).
      Fix powerpc ifunc-sel.h build for -Os.
      Fix s390 -Os iconv build.
      Remove old-GCC parts of x86 bits/mathinline.h.
      Remove more old-compilers parts of sysdeps/x86/fpu/bits/mathinline.h.
      Update i386 libm-test-ulps.
      Remove sysdeps/x86/fpu/bits/mathinline.h __finite inline.
      Add SHT_X86_64_UNWIND to elf.h (bug 20079).
      Add narrowing subtract functions.
      Fix signed integer overflow in random_r (bug 17343).
      Remove powerpc, sparc fdim inlines (bug 22987).
      Use x86_64 backtrace as generic version.
      Remove unused frame.h header, sigcontextinfo.h macros.
      Unify umount function implementations (bug 16552).
      Use Linux 4.16 in build-many-glibcs.py.
      Make build-many-glibcs.py build GCC for powerpcspe with --enable-obsolete.
      Update aarch64 bits/hwcap.h, dl-procinfo.c for Linux 4.16 HWCAP_ASIMDFHM.
      Define XTABS to TAB3 on alpha to match Linux 4.16.
      Add NT_PPC_PKEY from Linux 4.16 to elf.h.
      Add PTRACE_SECCOMP_GET_METADATA from Linux 4.16 to sys/ptrace.h.
      Fix Hurd glibc build with GCC 8.
      Use GCC 8 in build-many-glibcs.py by default.
      Remove tilegx port.
      Ignore absolute symbols in ABI tests.
      Move math_narrow_eval to separate math-narrow-eval.h.
      Move math_opt_barrier, math_force_eval to separate math-barriers.h.
      Move math_check_force_underflow macros to separate math-underflow.h.
      Do not include math-barriers.h in math_private.h.
      Add narrowing multiply functions.
      Update MIPS libm-test-ulps.
      Add narrowing divide functions.
      Fix year 2039 bug for localtime with 64-bit time_t (bug 22639).
      Obsolete nfsservctl.
      Split test-tgmath3 by function.
      Make llseek a compat symbol (bug 18471).
      Fix i686-linux-gnu build with GCC mainline.
      Remove sysdeps/aarch64/soft-fp directory.
      Remove sysdeps/alpha/soft-fp directory.
      Remove sysdeps/sh/soft-fp directory.
      Remove sysdeps/powerpc/soft-fp directory.
      Remove sysdeps/sparc/sparc32/soft-fp directory.
      Remove sysdeps/sparc/sparc64/soft-fp directory.
      Make powerpc-nofpu __sqrtsf2, __sqrtdf2 compat symbols (bug 18473).
      Use Linux 4.17 in build-many-glibcs.py.
      Update kernel version in syscall-names.list to 4.17.
      Add MAP_FIXED_NOREPLACE from Linux 4.17 to bits/mman.h.
      Add AArch64 hwcap values from Linux 4.17.
      Fix ldbl-96 fma (Inf, Inf, finite) (bug 23272).
      Do not use const attribute for nan functions (bug 23277).
      Fix strtod overflow detection (bug 23279).
      Ignore -Wrestrict for one strncat test.
      Add tests for sign of NaN returned by strtod (bug 23007).
      Fix powerpc64le build of nan-sign tests (bug 23303).
      Update MAP_TYPE value for hppa from Linux 4.17.
      Add MSG_STAT_ANY from Linux 4.17 to bits/msq.h.
      Add SEM_STAT_ANY from Linux 4.17 to bits/sem.h.
      Add SHM_STAT_ANY from Linux 4.17 to bits/shm.h.
      Fix scanf rounding of negative floating-point numbers (bug 23280).
      Fix bug-strspn1.c, bug-strpbrk1.c build with GCC mainline.
      Fix tst-cmp.c build with GCC mainline.
      Fix hardcoded /tmp paths in testing (bug 13888).
      Remove nptl/sockperf.c.
      Avoid insecure usage of tmpnam in tests.
      Use binutils 2.31 branch in build-many-glibcs.py.
      Update powerpc-nofpu ulps.

Leonardo Sandoval (6):
      x86-64: remove duplicate line on PREFETCH_ONE_SET macro
      Add missing changelog from previous commit
      x86-64: Optimize strcmp/wcscmp and strncmp/wcsncmp with AVX2
      benchtests: Add --no-diff and --no-header options
      benchtests: Catch exceptions in input arguments
      benchtests: improve argument parsing through argparse library

Maciej W. Rozycki (6):
      nptl_db: Remove stale `match_pid' parameter from `iterate_thread_list'
      elf: Unify symbol address run-time calculation [BZ #19818]
      elf: Correct absolute (SHN_ABS) symbol run-time calculation [BZ #19818]
      nisplus: Correct pwent parsing issue and resulting build error [BZ #23266]
      elf: Accept absolute (SHN_ABS) symbols whose value is zero [BZ #23307]
      libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307]

Mark Wielaard (1):
      elf.h: Add BPF relocation types.

Martin Sebor (1):
      Document interaction with GCC built-ins in the Customizing Printf

Michael Wolf (1):
      New locale: Lower Sorbian (dsb_DE) [BZ #23208]

Mike FABIAN (23):
      Add missing “reorder-end” in LC_COLLATE of et_EE [BZ #22517]
      Use “copy "es_BO"” in LC_TIME of es_CU, es_CL, and es_EC
      Use / instead of - in d_fmt for pt_BR and pt_PT [BZ #17438]
      Remove --quiet argument when installing locales
      Update iso14651_t1_common file to ISO14651_2016_TABLE1_en.txt [BZ #14095]
      Necessary changes after updating the iso14651_t1_common file
      iso14651_t1_common: <U\([0-9A-F][0-9A-F][0-9A-F][0-9A-F][0-9A-F]\)> → <U000\1>
      Fixing syntax errors after updating the iso14651_t1_common file
      Add convenience symbols like <AFTER-A>, <BEFORE-A> to iso14651_t1_common
      iso14651_t1_common: make the fourth level the codepoint for characters which are ignorable on all 4 levels
      Add sections for various scripts to the iso14651_t1_common file
      Collation order of ȥ has changed in new iso14651_t1_common file, adapt test files
      Collation order of @-. and space has changed in new iso14651_t1_common file, adapt test files
      Fix posix/bug-regex5.c test case, adapt to iso14651_t1_common upate
      Fix test cases tst-fnmatch and tst-regexloc for the new iso14651_t1_common file.
      Improve gen-locales.mk and gen-locale.sh to make test files with @ options work
      Adapt collation in several locales to the new iso14651_t1_common file
      Remove the lines from cmn_TW.UTF-8.in which cannot work at the moment.
      bg_BG locale: Fix a typo in a comment
      an_ES locale: update some locale data [BZ #22896]
      Fix tst-strfmon_l test for hr_HR locale
      Bug 23308: Update to Unicode 11.0.0
      Put the correct Unicode version number 11.0.0 into the generated files

Patrick McGehearty (1):
      Improves __ieee754_exp(x) performance by 18-37% when |x| < 1.0397

Patsy Franklin (1):
      In sem_open.c,  pad was not initialized when __HAVE_64B_ATOMICS was

Paul Pluzhnikov (3):
      Fix BZ 20419.  A PT_NOTE in a binary could be arbitratily large, so using
      Fix BZ 22786: integer addition overflow may cause stack buffer overflow
      Update ulps with "make regen-ulps" on AMD Ryzen 7 1800X.

Quentin PAGÈS (1):
      oc_FR locale: Multiple updates (bug 23140, bug 23422).

Rafal Luzynski (13):
      lt_LT locale: Update abbreviated month names (bug 22932).
      Greek (el_CY, el_GR) locales: Introduce ab_alt_mon (bug 22937).
      cs_CZ locale: Add alternative month names (bug 22963).
      NEWS: Mention the locale data changes (bug 22848, 22937, 22963).
      gd_GB: Fix typo in abbreviated "May" (bug 23152).
      gd_GB, hsb_DE, wa_BE: Add alternative month names (bug 23140).
      csb_PL: Update month translations + add yesstr/nostr (bug 19485).
      csb_PL: Add alternative month names (bug 23140).
      ast_ES: Add alternative month names (bug 23140).
      hy_AM: Add alternative month names (bug 23140).
      dsb_DE locale: Fix syntax error and add tests (bug 23208).
      os_RU: Add alternative month names (bug 23140).
      NEWS: Avoid the words "nominative" and "genitive".

Rajalakshmi Srinivasaraghavan (3):
      powerpc: Add multiarch sqrtf128 for ppc64le
      ldbl-128ibm-compat: Introduce ieee128 symbols
      Add long double input for strfmon test

Raymond Nicholson (1):
      manual/startup.texi (Aborting a Program): Remove inappropriate joke.

Rical Jasan (9):
      manual: Fix Texinfo warnings about improper node names.
      manual: Fix a syntax error.
      manual: Improve documentation of get_current_dir_name. [BZ #6889]
      manual: Document missing feature test macros.
      manual: Update the _ISOC99_SOURCE description.
      manual: Update _DEFAULT_SOURCE.  [BZ #22862]
      Fix a typo in a comment.
      Add [BZ #16335] annotation to ChangeLog entry.
      Add manual documentation for threads.h

Richard Braun (1):
      Hurd: fix port leak in TLS

Robert Buj (1):
      ca_ES locale: Update LC_TIME (bug 22848).

Rogerio Alves (1):
      powerpc64: Always restore TOC on longjmp [BZ #21895]

Samuel Thibault (131):
      hurd: Fix build
      nscd: don't unconditionally use PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP
      hurd: Define EXEC_PAGESIZE
      hurd: Fix build on missing __ptsname_internal function
      hurd: fix build
      hurd: Add sysdep-cancel.h
      Move NPTL-specific code to NPTL-specific header
      hurd: fix timer_routines.c build
      hurd: fix gai_misc build
      hurd: fix timer_routines.c build
      hurd: do not check Mach and Hurd headers
      hurd: Add missing includes
      hurd: Add missing includes
      hurd: Move mach/param.h to bits/mach/param.h
      hurd: avoid including hurd/signal.h when not needed
      hurd: fix header conformity
      hurd: Add missing include
      hurd: Avoid using ino64_t and loff_t in headers
      hurd: Fix inclusion of mach headers in all standards
      hurd: Make almost all hurd headers includable in all standards
      Separate out error_t definition
      hurd: Add futimens support
      hurd: Fix includability of <hurd/signal.h> in all standards
      hurd: Add futimesat and utimensat support
      Add missing start-of-file descriptive comment.
      hurd: add gscope support
      hurd: add TLS support
      hurd: Fix getting signal thread stack layout for fork
      hurd: Replace threadvars with TLS
      hurd: Fix link cthread/pthread symbol exposition.
      hurd: Fix coding style
      x86_64: Fix build with RTLD_PRIVATE_ERRNO defined to 1
      hurd: Add missing include
      hurd: Fix copyright years
      hurd: Fix O_NOFOLLOW
      hurd: Fix O_DIRECTORY | O_NOFOLLOW
      hurd: Fix boot with statically-linked exec server
      hurd: Add mlockall support
      hurd: fix build
      hurd: Fix build with latest htl
      hurd: Code style fixes
      Fix errno values
      hurd: Fix accessing errno from rtld
      hurd: Initialize TLS and libpthread before signal thread start
      Add missing changelog from previous commit
      hurd: Fix calling __pthread_initialize_minimal in shared case
      hurd: Regenerate errno.h header
      hurd: advertise process memory locking option
      hurd: avoid letting signals go to thread created by timer_create
      hurd: Add hurd thread library
      hurd libpthread: add function missing in ABI list
      hurd: Advertise libpthread
      hurd: Remove bogus net/if_ppp.h
      hurd: Bump remaining LGPL2+ htl licences to LGPL 2.1+
      hurd: Announce that glibc now builds unpatched
      hurd: Fix exposition of UTIME_NOW, UTIME_OMIT
      hurd: Avoid local PLTs in libpthread.
      hurd: Avoid some PLTs in libc and librt
      Revert __dirfd PLT avoidance for now
      hurd: whitelist rtld symbols expected to be overridable
      hurd: Add __errno_location to overridable ld.so symbols
      hurd: Update localplt.data
      hurd: whitelist ld.so PLTs supposed to be avoided by rtld_hidden
      hurd: Avoid some libc.so PLTs
      hurd: Avoid more libc.so PLTs
      hurd: Fix typo
      hurd: Avoid more libc.so local PLTs
      hurd: Avoid local PLT in libpthread
      s390x: Fix hidden aliases
      hurd: Fix buffer overrun in __if_nametoindex
      Revert "s390x: Fix hidden aliases"
      Revert parts of "hurd: Avoid more libc.so local PLTs"
      hurd: Make __if_nametoindex return ENODEV if ifname is too long
      hurd: Fix missing trailing NUL in __if_nametoindex
      hurd: Silence warning
      hurd: Add missing symbols
      hurd: fix build
      hurd: Fix typo
      hurd: Avoid PLTs for longjmp & siglongjmp
      hurd: Avoid PLT for dirfd
      Revert "hurd: Avoid PLTs for longjmp & siglongjmp"
      hurd: fix conformity test for sys/un.h
      hurd: Fix spurious installation of headers defining hidden prototypes
      Fix sched_param
      conform sys/un.h: Allow sun_ prefix, not only sun_len
      Revert "Fix sched_param"
      hurd: Fix mach installed headers test
      hurd: xfail some structure fields ABI incompatibility with standards
      hurd: Fix standard compliance of some statvfs fields
      hurd: Update struct statfs according to struct statvfs
      hurd: Fix symbols exposition
      hurd: Avoid exposing all <sched.h> symbols from sys/types.h
      hurd: fix sigevent's sigev_notify_attributes field type
      hurd: remove non-standard siginfo symbol
      hurd: Fix termios.h symbols
      hurd: Add missing RLIM_SAVED_MAX/CUR
      hurd: Fix hurd installed headers test
      Drop fpregset unused symbol exposition
      Revert "hurd: Fix mach installed headers test"
      hurd: XFAIL appearance of sched_param and sched_priority from <sys/types.h>
      hurd: XFAIL tests for signal features not implemented yet
      hurd xfails: Add missing bug references
      hurd: Fix shmid_ds's shm_segsz field type
      hurd: xfail missing abilist for libmachuser and libhurduser
      hurd: update localplt.data
      hurd: Avoid PLTs for _hurd_port_locked_get/set
      hurd: Avoid PLTs for __mach_thread_self and __mach_reply_port
      hurd: Avoid a PLT reference
      hurd: Fix htl link failure
      hurd: avoid PLT ref between sendfile and sendfile64
      hurd: Detect 32bit overflow in value returned by lseek
      hurd: Avoid PLT ref for __pthread_get_cleanup_stack
      hurd: Avoid missing PLT ref from ld.so requirement
      hurd: Avoid PLT references to shortcuts
      hurd: Avoid PLT ref to __mach_msg
      hurd: Avoid PLT references to syscalls
      hurd: Whitelist PLT refs which are difficult to avoid
      hurd: Fix missing __pthread_get_cleanup_stack symbol
      hurd: Fix reference to _hurd_self_sigstate
      hurd: Fix "Missing required PLT reference"
      hurd: fix localplt.data format
      hurd: Enable thread-safe i386 atomic instructions
      Fix new file header
      hurd: Fix installed-headers tests
      check-execstack: Permit sysdeps to xfail some libs
      hurd: Fix some ld.so symbol override from libc
      hurd: Fix some ld.so symbol override from libc
      hurd: Fix some ld.so symbol override from libc
      hurd: Fix startup of static binaries linked against libpthread
      hurd: Add missing ChangeLog entry
      hurd: Fix exec usage of mach_setup_thread

Sean McKean (1):
      time: Reference CLOCKS_PER_SEC in clock comment [BZ #22735]

Siddhesh Poyarekar (18):
      benchtests: Reallocate buffers for every test run
      benchtests: Make bench-memcmp print json
      aarch64: Use the L() macro for labels in memcmp
      aarch64/strcmp: fix misaligned loop jump target
      benchtests: Convert strncmp benchmark output to json
      benchtests: Reallocate buffers for every strncmp implementation
      benchtests: Don't benchmark 0 length calls for strncmp
      Add ChangeLog entry for last 3 commits
      aarch64: Optimized memcmp for medium to large sizes
      aarch64: Fix branch target to loop16
      aarch64: Improve strncmp for mutually misaligned inputs
      aarch64/strncmp: Unbreak builds with old binutils
      aarch64/strncmp: Use lsr instead of mov+lsr
      benchtests: Move iterator declaration into loop header
      aarch64,falkor: Ignore prefetcher hints for memmove tail
      aarch64,falkor: Ignore prefetcher tagging for smaller copies
      aarch64,falkor: Use vector registers for memmove
      aarch64,falkor: Use vector registers for memcpy

Stefan Liebler (9):
      S390: Regenerate ULPs.
      Add runtime check if mutex will be elided in tst-mutex8 testcases.
      S390: Regenerate ULPs.
      S390: Regenerate ULPs.
      S390: Fix struct sigaction for 31bit in kernel_sigaction.h.
      Use volatile global counters in test-tgmath.c.
      Disable lock elision for mutex pretty printer tests.
      Fix blocking pthread_join. [BZ #23137]
      Fix string/tst-xbzero-opt if build with gcc head.

Steve Ellcey (2):
      IFUNC for Cavium ThunderX2
      aarch64: Use an ifunc/VDSO to implement gettimeofday in shared glibc.

Sylvain Lesage (1):
      es_BO locale: Change LC_PAPER to en_US (bug 22996).

Szabolcs Nagy (5):
      Remove slow paths from exp
      Fix documentation build with old makeinfo
      Use uint32_t sign in single precision math error handling functions
      aarch64: Remove HWCAP_CPUID from HWCAP_IMPORTANT
      aarch64: add HWCAP_ATOMICS to HWCAP_IMPORTANT

Thomas Schwinge (3):
      hurd: SOCK_CLOEXEC and SOCK_NONBLOCK for socket
      hurd: SOCK_CLOEXEC and SOCK_NONBLOCK for socketpair
      hurd: Implement pipe2

Tulio Magno Quites Machado Filho (14):
      powerpc: Update pow() ULPs
      powerpc: Undefine Linux ptrace macros that conflict with __ptrace_request
      powerpc: Update sin, cos and sincos ULPs
      Increase robustness of internal dlopen() by using RTLD_NOW [BZ #22766]
      Replace M_SUF (fabs) with M_FABS
      Replace M_SUF (M_LN2) with M_MLIT (M_LN2)
      Replace hidden_def with libm_hidden_def in math
      powerpc: Fix the compiler type used with C++ when -mabi=ieeelongdouble
      powerpc: Move around math-related Implies
      powerpc64le: Fix TFtype in sqrtf128 when using -mabi=ieeelongdouble
      Move declare_mgen_finite_alias definition
      Add a generic significand implementation
      ldbl-128ibm-compat: Create libm-alias-float128.h
      m68k: Reorganize log1p and significand implementations

Valery Timiriliyev (1):
      New locale: Yakut (Sakha) for Russia (sah_RU) [BZ #22241]

Vincent Chen (1):
      Add Andes nds32 dynamic relocations to elf.h

Wilco Dijkstra (20):
      Remove slow paths from log
      [AArch64] Use builtins for fpcr/fpsr
      [AArch64] Fix testsuite error due to fpsr/fscr change
      Remove slow paths from pow
      Remove mplog and mpexp
      [AArch64] Fix include.
      Use correct includes in benchtests
      Add support for sqrt asm redirects
      Rename all __ieee754_sqrt(f/l) calls to sqrt(f/l)
      Remove all target specific __ieee754_sqrt(f/l) inlines
      Revert m68k __ieee754_sqrt change
      Undefine attribute_hidden to fix benchtests
      sin/cos slow paths: avoid slow paths for small inputs
      sin/cos slow paths: remove large range reduction
      sin/cos slow paths: remove slow paths from small range reduction
      sin/cos slow paths: remove slow paths from huge range reduction
      sin/cos slow paths: remove unused slowpath functions
      sin/cos slow paths: refactor duplicated code into dosin
      sin/cos slow paths: refactor sincos implementation
      Improve strstr performance

Zack Weinberg (23):
      Remove some unnecessary redefinitions of std symbols.
      Remove getc and putc macros from the public stdio.h.
      Don't install libio.h or _G_config.h.
      Post-cleanup 1: move libio.h back out of bits/.
      Post-cleanup 2: minimize _G_config.h.
      [BZ #22830] malloc_stats: restore cancellation for stderr correctly.
      [BZ #19239] Don't include sys/sysmacros.h from sys/types.h.
      Remove vestiges of external build support from libio headers.
      Mechanically remove _IO_ name aliases for types and constants.
      Remove legacy configuration knobs from libio.
      Remove _IO_file_flags define.
      Remove miscellaneous debris from libio.
      alpha/clone.S: Invoke .set noat/.set at around explicit uses of $at
      Don't include math.h/math_private.h in math_ldbl_opt.h.
      nldbl-compat.c: Include math.h before nldbl-compat.h.
      [BZ 1190] Make EOF sticky in stdio.
      Make sysdeps/generic/internal-signals.h less stubby.
      NEWS: Reindent and copyedit
      Avoid cancellable I/O primitives in ld.so.
      Disallow use of DES encryption functions in new programs.
      manual: Reorganize crypt.texi.
      manual: Revise crypt.texi.
      New configure option --disable-crypt.

Zong Li (1):
      Change URL of gcc's tarball

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