Require GCC 4.7 or later to build glibc.

This patch implements a requirement of GCC 4.7 or later to build
glibc.

This was discussed in the thread starting at
<https://sourceware.org/ml/libc-alpha/2015-08/msg00851.html>.
Concerns were expressed by Mike and David.  At
<https://sourceware.org/ml/libc-alpha/2015-10/msg00453.html> I have
provided a 14-patch series showing in outline the cleanups facilitated
by this version requirement, as requested by Mike (this patch is the
first in that series, with the addition of a NEWS entry).  Given the
absence of further concerns or alternative proposals for criteria for
updates to this version requirement as requested in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00065.html>, I am
interpreting this as "absence of sustained opposition" under Carlos's
definition at <https://sourceware.org/glibc/wiki/Consensus> and
proposing this patch for inclusion in glibc.  I'd like to remind
people testing with 4.6 that if they move to testing with GCC 5 then
it will probably be about four years before they need to update the
compiler they use to test glibc again.

Although on the principles of time-based updates I think a move to
requiring binutils 2.23 would be reasonable, I'm not currently aware
of any cleanups that would facilitate so am not proposing that at this
time (but would expect to propose a move to requiring binutils 2.24 in
a year's time, as that brings features such as AVX512 support that
should allow some conditionals to be cleaned up).  If someone thinks a
move to requiring 2.23 would help clean things up for their
architecture, please speak up.  (And in general, I suspect there are
lots of architecture-specific configure tests that could be removed on
the basis of current GCC and binutils version requirements, given how
I've found architecture-independent tests obsolete on the basis of
version requirements going back 20 years.)

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

* configure.ac (libc_cv_compiler_ok): Require GCC 4.7 or later.
* configure: Regenerated.
* manual/install.texi (Tools for Compilation): Document
requirement for GCC 4.7 or later.
* INSTALL: Regenerated.

Gracefully handle incompatible locale data

* locale/loadlocale.c (_nl_intern_locale_data): Change assertion
on CNT to a conditional jump to 'puntdata'.

Remove TLS configure tests.

There seemed to be support in response to
<https://sourceware.org/ml/libc-alpha/2015-10/msg00510.html> for
removing configure tests that exist only to produce errors, where we
expect that tool versions failing the tests would also fail the tests
of minimum GCC / binutils versions.

This patch removes the tests for TLS support as one instance of such
tests.  Since the addition of TLS emulation support in GCC 4.3, I
don't think these tests would have failed even if proper TLS support
(as required by glibc) was missing in that architecture's GCC back
end, so any new glibc ports wanting a substantive test (if there are
actual GCC or binutils versions for those architectures, with
supported version numbers, missing TLS support) would have needed an
architecture-specific test anyway.

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

* configure.ac (libc_cv_gcc___thread): Remove configure test.
(libc_cv_gcc_tls_model_attr): Likewise.
* configure: Regenerated.

Remove configure test for needing -P for .S files.

There is a configure test for "whether we need to use -P to assemble
.S files".

I think this test is long obsolete.  I don't have a specific reference
to a binutils change or version that obsoleted this test, but: (a) we
only support GNU binutils; (b) it looks like every architecture
supported by glibc has '#' as a line comment character in its gas
port; (c) in any case, if the (compiler, assembler) combination in use
cannot compile a .S file without special options, that would clearly
be a substantially broken combination, which I don't think we need to
allow for at all.

The test in question was added by:

Thu Jan 27 16:46:03 1994  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * configure.in (asm-CPPFLAGS): Add new check to see if assembling
        a .S file loses without -P.  If so, set asm-CPPFLAGS=-P in config.make.

This patch removes the test and the reference to this issue in the
comment on the default empty definition of asm-CPPFLAGS.  (Various
other settings of asm-CPPFLAGS remain in sysdeps Makefile fragments.)

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

* configure.ac (libc_cv_need_minus_P): Remove configure test.
* configure: Regenerated.
* Makeconfig (asm-CPPFLAGS): Remove reference to -P in comment.

Remove support for removing glibc 2.0 headers.

There is a configure test for the presence of glibc 2.0 headers (that
were renamed / no longer installed in glibc 2.1) and associated
support for removing them on "make install".

Normal practice for subsequent removal / renaming of installed files
has been not to do anything special about removing them; if you want
installed files from an old installation removed reliably, you need to
use a packaging system that tracks what files were installed by a
previous glibc package (via installing in an intermediate directory
with install_root).  I think it's been long enough since 2.0 that it's
not particularly useful to have that special logic for those old
headers either; this patch removes it.

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

* configure.ac (old_glibc_headers): Remove configure test.
* configure: Regenerated.
* config.make.in (old-glibc-headers): Remove variable.
* Makefile [!$(install_root) && $(old-glibc-headers) = yes]
(install): Remove dependency on remove-old-headers.
(headers2_0): Remove variable.
(remove-old-headers): Remove rule.

Remove configure test for assembler .text directive.

There is a configure test for assembler support for the .text
directive.

I suppose this test must have been aimed at some non-ELF platform or
non-GNU assembler.  Certainly the GNU assembler has had ELF-specific
architecture-independent handling for .text since version 2.2, and
generic non-ELF-specific support predates that.

This patch removes this test as obsolete.

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

* configure.ac (libc_cv_dot_text): Remove configure test.
(libc_cv_asm_set_directive): Use .text instead of
${libc_cv_dot_text} in configure test.
* configure: Regenerated.

x86_64: Regenerate ulps [BZ #19168]

This comes from running “make regen-ulps” on AMD Opteron 6272 CPUs.

Use the CXX compiler only if it can create dynamic and static programs

* configure.ac (CXX): Clear the variable if the C++ toolchain does
not support static linking.
* configure: Regenerate.

Remove libm-test.inc special-casing of errors up to 0.5 ulp.

libm-test.inc has special-case code treating errors of up to 0.5 ulp
as allowed (for functions that aren't exactly determined) even if no
such errors appeared in libm-test-ulps.  This only applies to avoid
errors for individual function calls, not for the overall check of
ulps at the end of testing a function, resulting in confusing output
of the form:

testing double (without inline functions)
Maximal error of `log_upward'
 is      : 1 ulp
 accepted: 0 ulp

with no report of what testcase produced that error.  This patch
removes the special case, so that instead you get:

testing double (without inline functions)
Failure: Test: log_upward (0x1.0000000000001p+0)
Result:
 is:          2.2204460492503129e-16   0x1.fffffffffffffp-53
 should be:   2.2204460492503131e-16   0x1.0000000000000p-52
 difference:  2.4651903288156619e-32   0x1.0000000000000p-105
 ulp       :  0.5000
 max.ulp   :  0.0000
Maximal error of `log_upward'
 is      : 1 ulp
 accepted: 0 ulp

(for formats other than ldbl-128ibm, 0.5 ulp errors only occur in
unusual cases such as this where the correctly rounded result is a
power of 2 and the computed result is just below it).  This should not
affect which cases result in the test failing, just ensure that if it
fails then some failure for an individual function call was reported.

Tested for x86_64 and x86.

* math/libm-test.inc (check_float_internal): Do not special-case
errors up to 0.5 ulp.

Add more libm tests (ilogb, is*, j0, j1, jn, lgamma, log*).

This patch improves the libm test coverage for a few more functions.

Tested for x86_64 and x86.

* math/auto-libm-test-in: Add more tests of log, log10, log1p and
log2.
* math/auto-libm-test-out: Regenerated.
* math/libm-test.inc (MAX_EXP): New macro.
(ilogb_test_data): Add more tests.
(isfinite_test_data): Likewise.
(isgreater_test_data): Likewise.
(isgreaterequal_test_data): Likewise.
(isinf_test_data): Likewise.
(isless_test_data): Likewise.
(islessequal_test_data): Likewise.
(islessgreater_test_data): Likewise.
(isnan_test_data): Likewise.
(isnormal_test_data): Likewise.
(issignaling_test_data): Likewise.
(isunordered_test_data): Likewise.
(j0_test_data): Likewise.
(j1_test_data): Likewise.
(jn_test_data): Likewise.
(lgamma_test_data): Likewise.
(log_test_data): Likewise.
(log10_test_data): Likewise.
(log1p_test_data): Likewise.
(log2_test_data): Likewise.
(logb_test_data): Likewise.
* sysdeps/x86_64/fpu/libm-test-ulps: Update.

Fix j1, jn missing errno setting on underflow (bug 18611).

j1 and jn can underflow for small arguments, but fail to set errno
when underflowing to 0.  This patch fixes them to set errno in that
case.

Tested for x86_64, x86, mips64 and powerpc.

[BZ #18611]
* sysdeps/ieee754/dbl-64/e_j1.c (__ieee754_j1): Set errno and
avoid excess range and precision on underflow.
* sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise.
* sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_j1f): Likewise.
* sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_jnf): Likewise.
* sysdeps/ieee754/ldbl-128/e_j1l.c (__ieee754_j1l): Set errno on
underflow.
* sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Likewise.
* sysdeps/ieee754/ldbl-96/e_j1l.c (__ieee754_j1l): Likewise.
* sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise.
* math/auto-libm-test-in: Do not allow missing errno setting for
tests of j1 and jn.
* math/auto-libm-test-out: Regenerated.

Fix i386 / x86_64 nearbyint exception clearing (bug 15491).

The implementations of nearbyint functions using x87 floating point
(i386 all versions, x86_64 long double only) use the fclex
instruction, which clears any exceptions that were raised before the
function was called.  These functions must not clear exceptions that
were raised before they were called.

This patch fixes these functions to save and restore the whole
floating-point environment (fnstenv / fldenv) as the way of avoiding
raising "inexact" (recall that there isn't an x87 instruction for
loading just the status word, so the whole environment has to be saved
and loaded instead - the code already saved and loaded the control
word, which is now obtained from the saved environment after this
patch, to disable traps on "inexact").  In the case of the long double
functions, any "invalid" exception from frndint (applied to a
signaling NaN) needs merging into the saved state; this issue doesn't
apply to the float and double functions because that exception would
have been raised when the argument is loaded, before the environment
is saved.

[BZ #15491]
* sysdeps/i386/fpu/s_nearbyint.S (__nearbyint): Save and restore
floating-point environment instead of clearing all exceptions.
* sysdeps/i386/fpu/s_nearbyintf.S (__nearbyintf): Likewise.
* sysdeps/i386/fpu/s_nearbyintl.S (__nearbyintl): Likewise,
merging in "invalid" exceptions from frndint.
* sysdeps/x86_64/fpu/s_nearbyintl.S (__nearbyintl): Likewise.
* math/test-nearbyint-except.c: New file.
* math/Makefile (tests): Add test-nearbyint-except.

Update NEWS to mention drive-by fix for bug 18699.

Wilco fixed this tilegx bug in commit fe8c2b33aed0 ("Since we
now inline isinf, isnan and isfinite in math.h, replace uses
of __isinf_ns(l/f) with isinf, and remove the unused inlines
__isinf_ns(l/f), __isnan(f) and __finite(f).")

I verified that reverting math/s_cprojf.c back to using the
sysdeps/ieee754/flt-32/math_private.h version of __isinf_nsf()
instead of isinf() brings back the bug on tilegx.

tile: regenerate libm-test-ulps

Cleanup sync_file_range implementation

Since GLIBC requires a minimum 2.6.32 kernel, the patch cleanups
the mips code to assume __NR_sync_file_range and the powerpc one
to either assume __NR_sync_file_range2 or __NR_sync_file_range.

Checked on powerpc64le and build for mips (ABIO32, ABIN32, and ABI64).

* sysdeps/unix/sysv/linux/powerpc/powerpc64/sync_file_range.c
(__NR_sync_file_range2): Assume it is always defined.
* sysdeps/unix/sysv/linux/mips/mips32/sync_file_range.c
(__NR_sync_file_range): Assume it is always defined.

Always use INTERNAL_SYSCALL_ERRNO with INTERNAL_SYSCALL

Move io/tst-fcntl temporary file creation to do_prepare.

This patch makes the io/tst-fcntl test create its temporary file in
do_prepare not do_test, so that add_temp_name is called in the parent
on the correct file name, as requested in the thread starting at
<https://sourceware.org/ml/libc-alpha/2015-10/msg00552.html>.  I don't
see any reason in this test that opening the file in the parent should
be problematic.

This patch is explicitly not exhaustive for such issues; other tests
still call add_temp_file in the child.  The general issue is noted at
<https://sourceware.org/glibc/wiki/Development_Todo/Master#Use_test-skeleton.c>.

Tested for x86_64 (that this test still passes and no longer leaves a
file behind in /tmp).

* io/tst-fcntl.c (fd): New static variable.
(do_prepare): Open temporary file here....
(do_test): ...not here.

Make io/ftwtest-sh remove temporary files on early exit.

The test io/ftwtest-sh creates a directory that at some points during
the test does not have execute permission.  To avoid leaving behind
such a directory that prevents the build directory from being removed
with a simple "rm -rf", it traps various signals to make the directory
executable and remove it before exit.  However, this doesn't cover the
case where one of the tests simply fails (which happens with cross
testing if testing on a remote system where the path to the build
directory involves a symlink, or if that remote system fell over
during testing - I think the latter is the case where the directory is
left behind with bad permissions).

This patch makes that test also trap signal 0 (exit) so that the
directory gets properly removed in such failure cases as well.

Tested in both configurations where the test passes and where it fails
to verify that the result of the test is unchanged but the directory
is no longer left behind where it was previously left behind.

* io/ftwtest-sh: Also trap on exit to remove temporary files.

Build i386 __libc_do_syscall when PROF is defined

Need to provide i386 __libc_do_syscall when PROF is defined.
Define OPTIMIZE_FOR_GCC_5 for .S files so that it can be used
in libc-do-syscall.S.

* sysdeps/unix/sysv/linux/i386/libc-do-syscall.S: Replace
__GNUC_PREREQ (5,0) with OPTIMIZE_FOR_GCC_5.
* sysdeps/unix/sysv/linux/i386/sysdep.h (OPTIMIZE_FOR_GCC_5):
Moved before "#ifdef __ASSEMBLER__".

Fix ldbl-128 j0l spurious underflows (bug 19156).

My recent addition of more tests for j0 showed up that the ldbl-128
implementation of j0l produces spurious underflow exceptions for
arguments close to 0 (when the result is very close to 1).  This patch
fixes this by just returning the argument in that case.

Tested for mips64 (where it fixes the recently-added tests that were
previously failing).

[BZ #19156]
* sysdeps/ieee754/ldbl-128/e_j0l.c (__ieee754_j0l): Return 1 for
arguments very close to 0.

tile: avoid preprocessor redefinition warnings

PSEUDO_END and PSEUDO_END_NOERRNO are being defined in
sysdeps/unix/sysdep.h and then redefined for tile.  Add an
undef before each define to silence the warnings.

Disable GCC 5 optimization when PROF is defined

Since asm ("ebp") can't be used to put the 6th argument in %ebp for
syscall when compiling for profiling, we disable GCC 5 optimization
when PROF is defined.

* sysdeps/unix/sysv/linux/i386/sysdep.h (OPTIMIZE_FOR_GCC_5):
New.  Defined for GCC 5 and above when not compiling for
profiling.
Replace __GNUC_PREREQ (5,0) with OPTIMIZE_FOR_GCC_5.

Apply -fomit-frame-pointer only to .o/.os files

Since -fomit-frame-pointer is compatible with -pg, apply it only to
.o/.os files.

* sysdeps/unix/sysv/linux/i386/Makefile (CFLAGS-epoll_pwait.c):
Renamed to ...
(CFLAGS-epoll_pwait.o): This.
(CFLAGS-mmap.c): Renamed to ...
(CFLAGS-mmap.o): This.
(CFLAGS-mmap64.c): Renamed to ...
(CFLAGS-mmap64.o): This.
(CFLAGS-epoll_pwait.os): New.
(CFLAGS-mmap.os): Likewise.
(CFLAGS-mmap64.os): Likewise.
(CFLAGS-semtimedop.os): Likewise.
(CFLAGS-semtimedop.c): Renamed to ...
(CFLAGS-semtimedop.o): This.

tst-backtrace4: fix a warning message

Modify a warning message so that it doesn't sound as an error, e.g.:
"Obtained backtrace with 6 functions (but wanted at least 6)"

Update a comment too.

Use -Wold-style-definition.

This patch makes glibc build with -Wold-style-definition to avoid
old-style function definitions creeping back in by accident.

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).  Also tested build for arm,
mips64 and powerpc32.  Hopefully there aren't any remaining
system-specific files with old-style definitions whose formatting
evaded my searches, but if there are, they will be easy to fix.

* Makeconfig (+gccwarn-c): Add -Wold-style-definition.
* Makefile ($(objpfx)c++-types-check.out): Filter out
$(+gccwarn-c) instead of -Wstrict-prototypes.

Convert a few more function definitions to prototype style.

This patch converts a few more function definitions in glibc from
old-style K&R to prototype style.  This is sufficient to build and
test on x86_64 and x86 with -Wold-style-definition (I'll test on some
more architectures before proposing the actual addition of
-Wold-style-definition).

Tested for x86_64 and x86 with -Wold-style-definition in use
(testsuite - this patch affects files containing assertions).

* io/fts.c (fts_open): Convert to prototype-style function
definition.
* malloc/mcheck.c (mcheck): Likewise.
(mcheck_pedantic): Likewise.
* posix/regexec.c (re_search_2_stub): Likewise.  Use
internal_function.
(re_search_internal): Likewise.
* resolv/res_init.c [RESOLVSORT] (net_mask): Convert to
prototype-style function definition.
* sunrpc/clnt_udp.c (clntudp_call): Likewise.
* sunrpc/pmap_rmt.c (clnt_broadcast): Likewise.
* sunrpc/rpcsvc/rusers.x (xdr_utmp): Likewise.
(xdr_utmpptr): Likewise.
(xdr_utmparr): Likewise.
(xdr_utmpidle): Likewise.
(xdr_utmpidleptr): Likewise.
(xdr_utmpidlearr): Likewise.

Add more libm tests (fmod, fpclassify, frexp, hypot, ilogb, j0, j1, jn, log, log10, log2).

This patch improves the libm test coverage for a few more functions.

Tested for x86_64 and x86.

2015-10-21  Joseph Myers  <joseph@codesourcery.com>

* math/auto-libm-test-in: Add more tests of hypot, j0, j1, jn,
log, log10 and log2.
* math/auto-libm-test-out: Regenerated.
* math/libm-test.inc (fmod_test_data): Add more tests.
(fpclassify_test_data): Likewise.
(frexp_test_data): Likewise.
(hypot_test_data): Likewise.
(ilogb_test_data): Likewise.

Convert miscellaneous function definitions to prototype style.

This patch converts various miscellaneous functions definitions in
glibc, found with grep and not covered by my previous scripted
conversions, from old-style K&R to prototype-style.  These changes
were made manually.  This is not necessarily exhaustive as formatting
variants may have prevented my grep from finding some such
definitions.

Regarding the changes to files from GMP, they may originally have been
omitted when removing __STDC__ conditionals because of the files
coming from another package, but (a) GMP no longer has __STDC__
conditionals there anyway and (b) we don't try to keep these files
verbatim in sync with GMP (and there are licensing differences), so
making the change to them in glibc seems reasonable.

Tested for x86_64 and x86 (testsuite - this patch affects files
containing assertions).

* debug/fortify_fail.c (__fortify_fail): Convert to
prototype-style function definition.  Use internal_function.
* libio/genops.c (save_for_backup): Convert to prototype-style
function definition.
* libio/wgenops.c (save_for_wbackup): Likewise.
* login/grantpt.c (grantpt): Likewise.
* login/ptsname.c (ptsname): Likewise.
(__ptsname_r): Likewise.
* login/unlockpt.c (unlockpt): Likewise.
* mach/msgserver.c (__mach_msg_server): Likewise.
* misc/efgcvt.c (__APPEND (FUNC_PREFIX, fcvt)): Likewise.
(__APPEND (FUNC_PREFIX, ecvt)): Likewise.
(__APPEND (FUNC_PREFIX, gcvt)): Likewise.
* misc/efgcvt_r.c (__APPEND (FUNC_PREFIX, fcvt_r)): Likewise.
(__APPEND (FUNC_PREFIX, ecvt_r)): Likewise.
* nptl/cleanup_compat.c (_pthread_cleanup_push): Likewise.
* nptl/cleanup_defer_compat.c (_pthread_cleanup_push_defer):
Likewise.
* nptl/libc_pthread_init.c (__libc_pthread_init): Likewise.  Use
internal_function.
* nptl/pthread_atfork.c (__pthread_atfork): Convert to
prototype-style function definition.
* nptl/pthread_create.c (__pthread_create_2_1): Likewise.
[SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)]
(__pthread_create_2_0): Likewise.
* nptl/pthread_key_create.c (__pthread_key_create): Likewise.
* nptl/register-atfork.c (__register_atfork): Likewise.
* posix/glob.c (glob): Likewise.
* posix/regcomp.c (re_comp): Likewise.
* posix/regexec.c (re_exec): Likewise.
* stdlib/add_n.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* stdlib/cmp.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* stdlib/divmod_1.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* stdlib/divrem.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* stdlib/lshift.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* stdlib/mod_1.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* stdlib/mul.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* stdlib/mul_n.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* stdlib/rshift.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* stdlib/strtod.c (INTERNAL (STRTOF)): Convert to prototype-style
function definition.
(STRTOF): Likewise.
* stdlib/strtod_l.c (__STRTOF): Likewise.
* stdlib/strtol.c (INTERNAL (strtol)): Likewise.
* stdlib/strtol_l.c (INTERNAL (__strtol_l)): Likewise.
(__strtol_l): Likewise.
* stdlib/sub_n.c [__STDC__]: Make code unconditional.
[!__STDC__]: Remove conditional code.
* string/memrchr.c (MEMRCHR): Convert to prototype-style function
definition.
* string/strcasecmp.c (LOCALE_PARAM_DECL): Remove macro.
[USE_IN_EXTENDED_LOCALE_MODEL] (LOCALE_PARAM): Include argument
type.
(__strcasecmp): Convert to prototype-style function definition.
* string/strncase.c (LOCALE_PARAM_DECL): Remove macro.
[USE_IN_EXTENDED_LOCALE_MODEL] (LOCALE_PARAM): Include argument
type.
(__strncasecmp): Convert to prototype-style function definition.
* sunrpc/pm_getport.c (__libc_rpc_getport): Likewise.
* sunrpc/xdr.c (xdr_union): Likewise.
* sunrpc/xdr_array.c (xdr_array): Likewise.
* sunrpc/xdr_ref.c (xdr_reference): Likewise.
* sysdeps/m68k/m680x0/fpu/s_atan.c (__CONCATX(__,FUNC)): Likewise.
* sysdeps/m68k/m680x0/fpu/s_isinf.c (__CONCATX(__,FUNC)):
Likewise.
* sysdeps/m68k/m680x0/fpu/s_scalbn.c (__CONCATX(__scalbn,suffix):
Likewise.
* sysdeps/m68k/m680x0/fpu/s_sincos.c (CONCATX(__,FUNC)): Likewise.
* sysdeps/unix/sysv/linux/i386/scandir64.c (__old_scandir64):
Likewise.
* time/strftime_l.c (LOCALE_PARAM_DECL): Remove macro.
(LOCALE_PARAM_PROTO): Likewise.
[_LIBC && USE_IN_EXTENDED_LOCALE_MODEL] (LOCALE_PARAM): Include
argument type.
(ut_argument_spec): Remove macro.
(ut_argument_spec_iso): Rename to ut_argument_spec.
(memcpy_lowcase): Use LOCALE_PARAM in declaration.  Convert to
prototype-style function definition.
(memcpy_uppcase): Likewise.
(__strftime_internal): Likewise.
(my_strftime): Likewise.
* time/strptime_l.c (LOCALE_PARAM_PROTO): Remove macro.
(LOCALE_PARAM_DECL): Likewise.
[_LIBC] (LOCALE_PARAM): Include argument type.
(__strptime_internal): Convert to prototype-style function
definition.
(strptime): Likewise.
* wcsmbs/wcscasecmp.c (LOCALE_PARAM_DECL): Remove macro.
[USE_IN_EXTENDED_LOCALE_MODEL] (LOCALE_PARAM): Include argument
type.
(__wcscasecmp): Convert to prototype-style function definition.
* wcsmbs/wcsncase.c (LOCALE_PARAM_DECL): Remove macro.
[USE_IN_EXTENDED_LOCALE_MODEL] (LOCALE_PARAM): Include argument
type.
(__wcsncasecmp): Convert to prototype-style function definition.

Convert 113 more function definitions to prototype style (files with assertions).

This mostly automatically-generated patch converts 113 function
definitions in glibc from old-style K&R to prototype-style.  Following
my other recent such patches, this one deals with the case of function
definitions in files that either contain assertions or where grep
suggested they might contain assertions - and thus where it isn't
possible to use a simple object code comparison as a sanity check on
the correctness of the patch, because line numbers are changed.

A few such automatically-generated changes needed to be supplemented
by manual changes for the result to compile.  openat64 had a prototype
declaration with "..." but an old-style definition in
sysdeps/unix/sysv/linux/dl-openat64.c, and "..." needed adding to the
generated prototype in the definition (I've filed
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68024> for diagnosing
such cases in GCC; the old state was undefined behavior not requiring
a diagnostic, but one seems a good idea).  In addition, as Florian has
noted regparm attribute mismatches between declaration and definition
are only diagnosed for prototype definitions, and five functions
needed internal_function added to their definitions (in the case of
__pthread_mutex_cond_lock, via the macro definition of
__pthread_mutex_lock) to compile on i386.

After this patch is in, remaining old-style definitions are probably
most readily fixed manually before we can turn on
-Wold-style-definition for all builds.

Tested for x86_64 and x86 (testsuite).

* crypt/md5-crypt.c (__md5_crypt_r): Convert to prototype-style
function definition.
* crypt/sha256-crypt.c (__sha256_crypt_r): Likewise.
* crypt/sha512-crypt.c (__sha512_crypt_r): Likewise.
* debug/backtracesyms.c (__backtrace_symbols): Likewise.
* elf/dl-minimal.c (_itoa): Likewise.
* hurd/hurdmalloc.c (malloc): Likewise.
(free): Likewise.
(realloc): Likewise.
* inet/inet6_option.c (inet6_option_space): Likewise.
(inet6_option_init): Likewise.
(inet6_option_append): Likewise.
(inet6_option_alloc): Likewise.
(inet6_option_next): Likewise.
(inet6_option_find): Likewise.
* io/ftw.c (FTW_NAME): Likewise.
(NFTW_NAME): Likewise.
(NFTW_NEW_NAME): Likewise.
(NFTW_OLD_NAME): Likewise.
* libio/iofwide.c (_IO_fwide): Likewise.
* libio/strops.c (_IO_str_init_static_internal): Likewise.
(_IO_str_init_static): Likewise.
(_IO_str_init_readonly): Likewise.
(_IO_str_overflow): Likewise.
(_IO_str_underflow): Likewise.
(_IO_str_count): Likewise.
(_IO_str_seekoff): Likewise.
(_IO_str_pbackfail): Likewise.
(_IO_str_finish): Likewise.
* libio/wstrops.c (_IO_wstr_init_static): Likewise.
(_IO_wstr_overflow): Likewise.
(_IO_wstr_underflow): Likewise.
(_IO_wstr_count): Likewise.
(_IO_wstr_seekoff): Likewise.
(_IO_wstr_pbackfail): Likewise.
(_IO_wstr_finish): Likewise.
* locale/programs/localedef.c (normalize_codeset): Likewise.
* locale/programs/locarchive.c (add_locale_to_archive): Likewise.
(add_locales_to_archive): Likewise.
(delete_locales_from_archive): Likewise.
* malloc/malloc.c (__libc_mallinfo): Likewise.
* math/gen-auto-libm-tests.c (init_fp_formats): Likewise.
* misc/tsearch.c (__tfind): Likewise.
* nptl/pthread_attr_destroy.c (__pthread_attr_destroy): Likewise.
* nptl/pthread_attr_getdetachstate.c
(__pthread_attr_getdetachstate): Likewise.
* nptl/pthread_attr_getguardsize.c (pthread_attr_getguardsize):
Likewise.
* nptl/pthread_attr_getinheritsched.c
(__pthread_attr_getinheritsched): Likewise.
* nptl/pthread_attr_getschedparam.c
(__pthread_attr_getschedparam): Likewise.
* nptl/pthread_attr_getschedpolicy.c
(__pthread_attr_getschedpolicy): Likewise.
* nptl/pthread_attr_getscope.c (__pthread_attr_getscope):
Likewise.
* nptl/pthread_attr_getstack.c (__pthread_attr_getstack):
Likewise.
* nptl/pthread_attr_getstackaddr.c (__pthread_attr_getstackaddr):
Likewise.
* nptl/pthread_attr_getstacksize.c (__pthread_attr_getstacksize):
Likewise.
* nptl/pthread_attr_init.c (__pthread_attr_init_2_1): Likewise.
(__pthread_attr_init_2_0): Likewise.
* nptl/pthread_attr_setdetachstate.c
(__pthread_attr_setdetachstate): Likewise.
* nptl/pthread_attr_setguardsize.c (pthread_attr_setguardsize):
Likewise.
* nptl/pthread_attr_setinheritsched.c
(__pthread_attr_setinheritsched): Likewise.
* nptl/pthread_attr_setschedparam.c
(__pthread_attr_setschedparam): Likewise.
* nptl/pthread_attr_setschedpolicy.c
(__pthread_attr_setschedpolicy): Likewise.
* nptl/pthread_attr_setscope.c (__pthread_attr_setscope):
Likewise.
* nptl/pthread_attr_setstack.c (__pthread_attr_setstack):
Likewise.
* nptl/pthread_attr_setstackaddr.c (__pthread_attr_setstackaddr):
Likewise.
* nptl/pthread_attr_setstacksize.c (__pthread_attr_setstacksize):
Likewise.
* nptl/pthread_condattr_setclock.c (pthread_condattr_setclock):
Likewise.
* nptl/pthread_create.c (__find_in_stack_list): Likewise.
* nptl/pthread_getattr_np.c (pthread_getattr_np): Likewise.
* nptl/pthread_mutex_cond_lock.c (__pthread_mutex_lock): Define to
use internal_function.
* nptl/pthread_mutex_init.c (__pthread_mutex_init): Convert to
prototype-style function definition.
* nptl/pthread_mutex_lock.c (__pthread_mutex_lock): Likewise.
(__pthread_mutex_cond_lock_adjust): Likewise.  Use
internal_function.
* nptl/pthread_mutex_timedlock.c (pthread_mutex_timedlock):
Convert to prototype-style function definition.
* nptl/pthread_mutex_trylock.c (__pthread_mutex_trylock):
Likewise.
* nptl/pthread_mutex_unlock.c (__pthread_mutex_unlock_usercnt):
Likewise.
(__pthread_mutex_unlock): Likewise.
* nptl_db/td_ta_clear_event.c (td_ta_clear_event): Likewise.
* nptl_db/td_ta_set_event.c (td_ta_set_event): Likewise.
* nptl_db/td_thr_clear_event.c (td_thr_clear_event): Likewise.
* nptl_db/td_thr_event_enable.c (td_thr_event_enable): Likewise.
* nptl_db/td_thr_set_event.c (td_thr_set_event): Likewise.
* nss/makedb.c (process_input): Likewise.
* posix/fnmatch.c (__strchrnul): Likewise.
(__wcschrnul): Likewise.
(fnmatch): Likewise.
* posix/fnmatch_loop.c (FCT): Likewise.
* posix/glob.c (globfree): Likewise.
(__glob_pattern_type): Likewise.
(__glob_pattern_p): Likewise.
* posix/regcomp.c (re_compile_pattern): Likewise.
(re_set_syntax): Likewise.
(re_compile_fastmap): Likewise.
(regcomp): Likewise.
(regerror): Likewise.
(regfree): Likewise.
* posix/regexec.c (regexec): Likewise.
(re_match): Likewise.
(re_search): Likewise.
(re_match_2): Likewise.
(re_search_2): Likewise.
(re_search_stub): Likewise.  Use internal_function
(re_copy_regs): Likewise.
(re_set_registers): Convert to prototype-style function
definition.
(prune_impossible_nodes): Likewise.  Use internal_function.
* resolv/inet_net_pton.c (inet_net_pton): Convert to
prototype-style function definition.
(inet_net_pton_ipv4): Likewise.
* stdlib/strtod_l.c (____STRTOF_INTERNAL): Likewise.
* sysdeps/pthread/aio_cancel.c (aio_cancel): Likewise.
* sysdeps/pthread/aio_suspend.c (aio_suspend): Likewise.
* sysdeps/pthread/timer_delete.c (timer_delete): Likewise.
* sysdeps/unix/sysv/linux/dl-openat64.c (openat64): Likewise.
Make variadic.
* time/strptime_l.c (localtime_r): Convert to prototype-style
function definition.
* wcsmbs/mbsnrtowcs.c (__mbsnrtowcs): Likewise.
* wcsmbs/mbsrtowcs_l.c (__mbsrtowcs_l): Likewise.
* wcsmbs/wcsnrtombs.c (__wcsnrtombs): Likewise.
* wcsmbs/wcsrtombs.c (__wcsrtombs): Likewise.

Convert 29 more function definitions to prototype style (multiple parameters in one K&R parameter declaration).

This automatically-generated patch converts 29 function definitions in
glibc (including one in an example in the manual) from old-style K&R
to prototype-style.  Following my other recent such patches, this one
deals with the case of function definitions where one K&R parameter
declaration declares multiple parameters, as in:

void
foo (a, b)
     int a, *b;
{
}

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

* crypt/crypt.c (_ufc_doit_r): Convert to prototype-style function
definition.
(_ufc_doit_r): Likewise.
* crypt/crypt_util.c (_ufc_copymem): Likewise.
(_ufc_output_conversion_r): Likewise.
* inet/inet_mkadr.c (__inet_makeaddr): Likewise.
* inet/rcmd.c (rcmd_af): Likewise.
(rcmd): Likewise.
(ruserok_af): Likewise.
(ruserok): Likewise.
(ruserok2_sa): Likewise.
(ruserok_sa): Likewise.
(iruserok_af): Likewise.
(iruserok): Likewise.
(__ivaliduser): Likewise.
(__validuser2_sa): Likewise.
* inet/rexec.c (rexec_af): Likewise.
(rexec): Likewise.
* inet/ruserpass.c (ruserpass): Likewise.
* locale/programs/xmalloc.c (xcalloc): Likewise.
* manual/examples/timeval_subtract.c (timeval_subtract): Likewise.
* math/w_drem.c (__drem): Likewise.
* math/w_dremf.c (__dremf): Likewise.
* math/w_dreml.c (__dreml): Likewise.
* misc/daemon.c (daemon): Likewise.
* resolv/res_debug.c (p_fqnname): Likewise.
* stdlib/div.c (div): Likewise.
* string/memcmp.c (memcmp_bytes): Likewise.
* sunrpc/pmap_rmt.c (pmap_rmtcall): Likewise.
* sunrpc/svc_udp.c (svcudp_bufcreate): Likewise.

Convert 24 more function definitions to prototype style (array parameters).

This automatically-generated patch converts 24 function definitions in
glibc from old-style K&R to prototype-style.  Following my other
recent such patches, this one deals with the case of functions with
array parameters.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

* crypt/cert.c (main): Convert to prototype-style function
definition.
* io/pipe.c (__pipe): Likewise.
* io/pipe2.c (__pipe2): Likewise.
* misc/futimesat.c (futimesat): Likewise.
* misc/utimes.c (__utimes): Likewise.
* posix/execve.c (__execve): Likewise.
* posix/execvp.c (execvp): Likewise.
* posix/execvpe.c (__execvpe): Likewise.
* posix/fexecve.c (fexecve): Likewise.
* socket/socketpair.c (socketpair): Likewise.
* stdlib/drand48-iter.c (__drand48_iterate): Likewise.
* stdlib/erand48.c (erand48): Likewise.
* stdlib/erand48_r.c (__erand48_r): Likewise.
* stdlib/jrand48.c (jrand48): Likewise.
* stdlib/jrand48_r.c (__jrand48_r): Likewise.
* stdlib/lcong48.c (lcong48): Likewise.
* stdlib/lcong48_r.c (__lcong48_r): Likewise.
* stdlib/nrand48.c (nrand48): Likewise.
* stdlib/nrand48_r.c (__nrand48_r): Likewise.
* stdlib/seed48.c (seed48): Likewise.
* stdlib/seed48_r.c (__seed48_r): Likewise.
* sysdeps/mach/hurd/execve.c (__execve): Likewise.
* sysdeps/mach/hurd/utimes.c (__utimes): Likewise.
* sysdeps/unix/sysv/linux/fexecve.c (fexecve): Likewise.

Remove gnu_unique_object configure test.

There is a configure test for assembler support for the
gnu_unique_object symbol type.  This support was added in binutils
2.20, so is present in all versions supported for building glibc.

Thus, I think the configure test can be removed; this patch does so.
Now, there is a caveat that the gas NEWS entry refers to this as a
feature for GNU/Linux targets.  But the condition is use of
ELFOSABI_GNU or ELFOSABI_NONE.  ELFOSABI_GNU covers Hurd as well as
GNU/Linux (as was the case with the older ELFOSABI_LINUX name), and
ELFOSABI_NONE means this is effectively OS-independent.  Furthermore,
I think a correct binutils port for any glibc target ought to support
this feature for use with glibc; glibc supports this as an
OS-independent feature (the configure test is only about glibc
testcases).

Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by the patch).

* configure.ac (libc_cv_asm_unique_object): Remove configure test.
* configure: Regenerated.
* config.h.in (HAVE_ASM_UNIQUE_OBJECT): Remove #undef.
* elf/tst-unique1.c (do_test) [HAVE_ASM_UNIQUE_OBJECT]: Make code
unconditional.
* elf/tst-unique1mod1.c [HAVE_ASM_UNIQUE_OBJECT]: Likewise.
* elf/tst-unique1mod2.c [HAVE_ASM_UNIQUE_OBJECT]: Likewise.
* elf/tst-unique2.c (do_test) [HAVE_ASM_UNIQUE_OBJECT]: Likewise.
(do_test) [!HAVE_ASM_UNIQUE_OBJECT]: Remove conditional code.
* elf/tst-unique2mod1.c [HAVE_ASM_UNIQUE_OBJECT]: Make code
unconditional.
* elf/tst-unique2mod2.c [HAVE_ASM_UNIQUE_OBJECT]: Likewise.

Do not use -Wno-strict-prototypes.

Two glibc makefiles use -Wno-strict-prototypes.  I don't know if this
was needed before my recent conversion of many function definitions to
prototype style, but it's not needed now; this patch removes it.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

* posix/Makefile (CFLAGS-regex.c): Remove variable.
* resolv/Makefile (+cflags): Do not use -Wno-strict-prototypes.

Convert 69 more function definitions to prototype style (line wrap cases).

This automatically-generated patch converts 69 function definitions in
glibc from old-style K&R to prototype-style.

This patch, covering both sysdeps and non-sysdeps files, deals with
cases where the prototype needed to be wrapped over more than one
line.  Otherwise, exclusions and caveats are as for
<https://sourceware.org/ml/libc-alpha/2015-10/msg00594.html> and
<https://sourceware.org/ml/libc-alpha/2015-10/msg00599.html>.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

* crypt/crypt-entry.c (__crypt_r): Convert to prototype-style
function definition.
* crypt/crypt_util.c (__encrypt_r): Likewise.
* libio/genops.c (_IO_no_init): Likewise.
* libio/iofopncook.c (_IO_fopencookie): Likewise.
(_IO_old_fopencookie): Likewise.
* libio/iofwrite_u.c (fwrite_unlocked): Likewise.
* libio/iogetline.c (_IO_getline): Likewise.
(_IO_getline_info): Likewise.
* libio/iogetwline.c (_IO_getwline): Likewise.
(_IO_getwline_info): Likewise.
* libio/vsnprintf.c (_IO_vsnprintf): Likewise.
* libio/vswprintf.c (_IO_vswprintf): Likewise.
* locale/programs/simple-hash.c (insert_entry_2): Likewise.
(find_entry): Likewise.
(iterate_table): Likewise.
(lookup): Likewise.
* login/forkpty.c (forkpty): Likewise.
* misc/hsearch_r.c (__hsearch_r): Likewise.
* misc/select.c (__select): Likewise.
* nptl/cleanup_defer_compat.c (_pthread_cleanup_pop_restore):
Likewise.
* nptl/old_pthread_cond_init.c (__pthread_cond_init_2_0):
Likewise.
* nptl/old_pthread_cond_timedwait.c
(__pthread_cond_timedwait_2_0): Likewise.
* nptl/pthread_barrier_init.c (__pthread_barrier_init): Likewise.
* nptl/pthread_barrierattr_getpshared.c
(pthread_barrierattr_getpshared): Likewise.
* nptl/pthread_getschedparam.c (__pthread_getschedparam):
Likewise.
* nptl/pthread_mutex_setprioceiling.c
(pthread_mutex_setprioceiling): Likewise.
* nptl/pthread_mutexattr_getprioceiling.c
(pthread_mutexattr_getprioceiling): Likewise.
* nptl/pthread_rwlock_init.c (__pthread_rwlock_init): Likewise.
* nptl/pthread_rwlock_timedrdlock.c (pthread_rwlock_timedrdlock):
Likewise.
* nptl/pthread_rwlock_timedwrlock.c (pthread_rwlock_timedwrlock):
Likewise.
* nptl/pthread_setschedparam.c (__pthread_setschedparam):
Likewise.
* socket/recvfrom.c (__recvfrom): Likewise.
* socket/sendto.c (__sendto): Likewise.
* socket/setsockopt.c (__setsockopt): Likewise.
* stdio-common/_itoa.c (_itoa): Likewise.
* stdio-common/_itowa.c (_itowa): Likewise.
* stdio-common/reg-printf.c (__register_printf_specifier):
Likewise.
(__register_printf_function): Likewise.
* stdio-common/tempname.c (__path_search): Likewise.
* stdlib/addmul_1.c (mpn_addmul_1): Likewise.
* stdlib/mul_1.c (mpn_mul_1): Likewise.
* stdlib/random_r.c (__initstate_r): Likewise.
* stdlib/setenv.c (__add_to_environ): Likewise.
* stdlib/submul_1.c (mpn_submul_1): Likewise.
* streams/getpmsg.c (getpmsg): Likewise.
* streams/putmsg.c (putmsg): Likewise.
* streams/putpmsg.c (putpmsg): Likewise.
* sunrpc/clnt_raw.c (clntraw_call): Likewise.
* sunrpc/clnt_tcp.c (clnttcp_call): Likewise.
* sunrpc/clnt_udp.c (clntudp_create): Likewise.
* sunrpc/clnt_unix.c (clntunix_call): Likewise.
* sunrpc/pm_getport.c (pmap_getport): Likewise.
* sunrpc/svc_udp.c (cache_get): Likewise.
* sunrpc/xdr_array.c (xdr_vector): Likewise.
* sysdeps/mach/hurd/getcwd.c
(__canonicalize_directory_name_internal): Likewise.
* sysdeps/mach/hurd/pselect.c (__pselect): Likewise.
* sysdeps/mach/hurd/recvfrom.c (__recvfrom): Likewise.
* sysdeps/mach/hurd/select.c (__select): Likewise.
* sysdeps/posix/ttyname_r.c (getttyname_r): Likewise.
* sysdeps/pthread/timer_settime.c (timer_settime): Likewise.
* sysdeps/sparc/nptl/pthread_barrier_init.c
(__pthread_barrier_init): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_timedwait.c
(__pthread_cond_timedwait): Likewise.
* sysdeps/unix/sysv/linux/i386/putmsg.c (putmsg): Likewise.
* sysdeps/unix/sysv/linux/s390/semtimedop.c (semtimedop):
Likewise.
* sysdeps/unix/sysv/linux/semtimedop.c (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/timer_settime.c (timer_settime):
Likewise.
* sysvipc/semtimedop.c (semtimedop): Likewise.
* time/setitimer.c (__setitimer): Likewise.
* time/strftime_l.c (emacs_strftime): Likewise.

use -fstack-protector-strong when available

With gcc-4.9, a new -fstack-protector-strong flag is available that is
between -fstack-protector (pretty weak) and -fstack-protector-all (pretty
strong) that provides good trade-offs between overhead but still providing
good coverage.  Update the places in glibc that use ssp to use this flag
when it's available.

This also kills off the indirection of hardcoding the flag name in the
Makefiles and adding it based on a have-ssp boolean.  Instead, the build
always expands the $(stack-protector) variable to the best ssp setting.
This makes the build logic a bit simpler and allows people to easily set
to a diff flag like:
make stack-protector=-fstack-protector-all

Mark ld.so internel __fxstatat64 hidden

Since ld.so internel __fxstatat64 is only used internally in ld.so, it
can be made hidden.

[BZ #19122]
* include/sys/stat.h [IS_IN (rtld)] (__fxstatat64): Add
attribute_hidden.

PowerPC: Fix a race condition when eliding a lock

The previous code used to evaluate the preprocessor token is_lock_free to
a variable before starting a transaction.  This behavior can cause an
error if another thread got the lock (without using a transaction)
between the evaluation of the token and the beginning of the transaction.

This bug can be triggered with the following order of events:
1. The lock accessed by is_lock_free is free.
2. Thread T1 evaluates is_lock_free and stores into register R1 that the
   lock is free.
3. Thread T2 acquires the same lock used in is_lock_free.
4. T1 begins the transaction, creating a memory barrier where is_lock_free
   is false, but R1 is true.
5. T1 reads R1 and doesn't abort the transaction.
6. T1 calls ELIDE_UNLOCK, which reads false from is_lock_free and decides
   to unlock a lock acquired by T2, leading to undefined behavior.

This patch delays the evaluation of is_lock_free to inside a transaction
by moving this part of the code to the macro ELIDE_LOCK.

[BZ #18743]
* sysdeps/powerpc/nptl/elide.h (__elide_lock): Move most of this
code to...
(ELIDE_LOCK): ...here.
(__get_new_count): New function with part of the code from
__elide_lock that updates the value of adapt_count after a
transaction abort.
(__elided_trylock): Moved this code to...
(ELIDE_TRYLOCK): ...here.

timezone: polish grammar a bit in documentation

Reported-by: ricaljasan@pacific.net

timezone: document new --disable-timezone-tools option

Reported-by: Joseph Myers <joseph@codesourcery.com>

pt_chown: Clear any signal mask inherited from the parent process.

If grantpt() is called from a thread that is masking signals (for
instance, from a program using signalfd or using a dedicated
signal-handling thread), then that mask will get inherited to pt_chown.
This means that signals like SIGINT will not interrup pt_chown, so if it
hangs (e.g., because getgrnam("tty") hangs on a remote name service),
Ctrl-C will terminate the parent process but leave pt_chown around. Since
it's setuid, it's hard to kill any other way.

It is safe for pt_chown to unmask all signals, because grantpt() can be
(and usually is) called from an unprivileged process with all signals
unmasked.

Remove -fgnu89-inline configure test.

There is a configure test for -fgnu89-inline.  This option was added
in GCC 4.2, so the test is obsolete; this patch removes it.

Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by the patch).

* configure.ac (libc_cv_gnu89_inline): Remove configure test.
* configure: Regenerated.
* config.make.in (gnu89-inline-CFLAGS): Remove variable.
* Makeconfig (CFLAGS): Use -fgnu89-inline instead of
$(gnu89-inline-CFLAGS).

Remove .weak, .weakext configure tests.

There are configure tests for assembler .weak support, and, as a
fallback, for .weakext support.

.weakext appears to be an ECOFF thing (although a few ELF targets
support it as well).  .weak has been supported by the GNU assembler
for ELF targets since version 2.2, so given the requirement for ELF
the configure tests are obsolete; this patch removes them.

Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by the patch).

* configure.ac (libc_cv_asm_weak_directive): Remove configure
test.
(libc_cv_asm_weakext_directive): Likewise.
* configure: Regenerated.
* config.h.in (HAVE_ASM_WEAK_DIRECTIVE): Remove #undef.
(HAVE_ASM_WEAKEXT_DIRECTIVE): Likewise.
* include/libc-symbols.h
[!HAVE_ASM_WEAK_DIRECTIVE && !HAVE_ASM_WEAKEXT_DIRECTIVE]: Remove
#error.
[HAVE_ASM_WEAKEXT_DIRECTIVE]: Remove conditional code.
[!HAVE_ASM_WEAKEXT_DIRECTIVE]: Make code unconditional.

Convert 231 sysdeps function definitions to prototype style.

This mostly automatically-generated patch converts 231 sysdeps
function definitions in glibc from old-style K&R to prototype-style.

For __aio_sigqueue and __gai_sigqueue I had to add internal_function
to the definitions as noted by Florian in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00595.html> to keep
the functions compiling on x86 after conversion to prototype
definitions.  Otherwise, the patch is automatically generated with all
the same exclusions and caveats as in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00594.html> except
that it's a patch for sysdeps files.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).  Also tested for arm,
mips64 and powerpc32 that installed stripped shared libraries are
unchanged by the patch.

* sysdeps/arm/backtrace.c (__backtrace): Convert to
prototype-style function definition.
* sysdeps/i386/backtrace.c (__backtrace): Likewise.
* sysdeps/i386/ffs.c (__ffs): Likewise.
* sysdeps/i386/i686/ffs.c (__ffs): Likewise.
* sysdeps/ia64/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/ia64/nptl/pthread_spin_trylock.c (pthread_spin_trylock):
Likewise.
* sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l):
Likewise.
* sysdeps/m68k/ffs.c (__ffs): Likewise.
* sysdeps/m68k/m680x0/fpu/e_acos.c (FUNC): Likewise.
* sysdeps/m68k/m680x0/fpu/e_fmod.c (FUNC): Likewise.
* sysdeps/mach/adjtime.c (__adjtime): Likewise.
* sysdeps/mach/gettimeofday.c (__gettimeofday): Likewise.
* sysdeps/mach/hurd/_exit.c (_exit): Likewise.
* sysdeps/mach/hurd/access.c (__access): Likewise.
* sysdeps/mach/hurd/adjtime.c (__adjtime): Likewise.
* sysdeps/mach/hurd/chdir.c (__chdir): Likewise.
* sysdeps/mach/hurd/chmod.c (__chmod): Likewise.
* sysdeps/mach/hurd/chown.c (__chown): Likewise.
* sysdeps/mach/hurd/cthreads.c (cthread_keycreate): Likewise.
(cthread_getspecific): Likewise.
(cthread_setspecific): Likewise.
(__libc_getspecific): Likewise.
* sysdeps/mach/hurd/euidaccess.c (__euidaccess): Likewise.
* sysdeps/mach/hurd/faccessat.c (faccessat): Likewise.
* sysdeps/mach/hurd/fchdir.c (__fchdir): Likewise.
* sysdeps/mach/hurd/fchmod.c (__fchmod): Likewise.
* sysdeps/mach/hurd/fchmodat.c (fchmodat): Likewise.
* sysdeps/mach/hurd/fchown.c (__fchown): Likewise.
* sysdeps/mach/hurd/fchownat.c (fchownat): Likewise.
* sysdeps/mach/hurd/flock.c (__flock): Likewise.
* sysdeps/mach/hurd/fsync.c (fsync): Likewise.
* sysdeps/mach/hurd/ftruncate.c (__ftruncate): Likewise.
* sysdeps/mach/hurd/getgroups.c (__getgroups): Likewise.
* sysdeps/mach/hurd/gethostname.c (__gethostname): Likewise.
* sysdeps/mach/hurd/getitimer.c (__getitimer): Likewise.
* sysdeps/mach/hurd/getlogin_r.c (__getlogin_r): Likewise.
* sysdeps/mach/hurd/getpgid.c (__getpgid): Likewise.
* sysdeps/mach/hurd/getrusage.c (__getrusage): Likewise.
* sysdeps/mach/hurd/getsockname.c (__getsockname): Likewise.
* sysdeps/mach/hurd/group_member.c (__group_member): Likewise.
* sysdeps/mach/hurd/isatty.c (__isatty): Likewise.
* sysdeps/mach/hurd/lchown.c (__lchown): Likewise.
* sysdeps/mach/hurd/link.c (__link): Likewise.
* sysdeps/mach/hurd/linkat.c (linkat): Likewise.
* sysdeps/mach/hurd/listen.c (__listen): Likewise.
* sysdeps/mach/hurd/mkdir.c (__mkdir): Likewise.
* sysdeps/mach/hurd/mkdirat.c (mkdirat): Likewise.
* sysdeps/mach/hurd/openat.c (__openat): Likewise.
* sysdeps/mach/hurd/poll.c (__poll): Likewise.
* sysdeps/mach/hurd/readlink.c (__readlink): Likewise.
* sysdeps/mach/hurd/readlinkat.c (readlinkat): Likewise.
* sysdeps/mach/hurd/recv.c (__recv): Likewise.
* sysdeps/mach/hurd/rename.c (rename): Likewise.
* sysdeps/mach/hurd/renameat.c (renameat): Likewise.
* sysdeps/mach/hurd/revoke.c (revoke): Likewise.
* sysdeps/mach/hurd/rewinddir.c (__rewinddir): Likewise.
* sysdeps/mach/hurd/rmdir.c (__rmdir): Likewise.
* sysdeps/mach/hurd/seekdir.c (seekdir): Likewise.
* sysdeps/mach/hurd/send.c (__send): Likewise.
* sysdeps/mach/hurd/setdomain.c (setdomainname): Likewise.
* sysdeps/mach/hurd/setegid.c (setegid): Likewise.
* sysdeps/mach/hurd/seteuid.c (seteuid): Likewise.
* sysdeps/mach/hurd/setgid.c (__setgid): Likewise.
* sysdeps/mach/hurd/setgroups.c (setgroups): Likewise.
* sysdeps/mach/hurd/sethostid.c (sethostid): Likewise.
* sysdeps/mach/hurd/sethostname.c (sethostname): Likewise.
* sysdeps/mach/hurd/setlogin.c (setlogin): Likewise.
* sysdeps/mach/hurd/setpgid.c (__setpgid): Likewise.
* sysdeps/mach/hurd/setregid.c (__setregid): Likewise.
* sysdeps/mach/hurd/setreuid.c (__setreuid): Likewise.
* sysdeps/mach/hurd/settimeofday.c (__settimeofday): Likewise.
* sysdeps/mach/hurd/setuid.c (__setuid): Likewise.
* sysdeps/mach/hurd/shutdown.c (shutdown): Likewise.
* sysdeps/mach/hurd/sigaction.c (__sigaction): Likewise.
* sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise.
* sysdeps/mach/hurd/sigpending.c (sigpending): Likewise.
* sysdeps/mach/hurd/sigprocmask.c (__sigprocmask): Likewise.
* sysdeps/mach/hurd/sigsuspend.c (__sigsuspend): Likewise.
* sysdeps/mach/hurd/socket.c (__socket): Likewise.
* sysdeps/mach/hurd/symlink.c (__symlink): Likewise.
* sysdeps/mach/hurd/symlinkat.c (symlinkat): Likewise.
* sysdeps/mach/hurd/telldir.c (telldir): Likewise.
* sysdeps/mach/hurd/truncate.c (__truncate): Likewise.
* sysdeps/mach/hurd/umask.c (__umask): Likewise.
* sysdeps/mach/hurd/unlink.c (__unlink): Likewise.
* sysdeps/mach/hurd/unlinkat.c (unlinkat): Likewise.
* sysdeps/mips/mips64/__longjmp.c (__longjmp): Likewise.
* sysdeps/posix/alarm.c (alarm): Likewise.
* sysdeps/posix/cuserid.c (cuserid): Likewise.
* sysdeps/posix/dirfd.c (dirfd): Likewise.
* sysdeps/posix/dup.c (__dup): Likewise.
* sysdeps/posix/dup2.c (__dup2): Likewise.
* sysdeps/posix/euidaccess.c (euidaccess): Likewise.
(main): Likewise.
* sysdeps/posix/flock.c (__flock): Likewise.
* sysdeps/posix/fpathconf.c (__fpathconf): Likewise.
* sysdeps/posix/getcwd.c (__getcwd): Likewise.
* sysdeps/posix/gethostname.c (__gethostname): Likewise.
* sysdeps/posix/gettimeofday.c (__gettimeofday): Likewise.
* sysdeps/posix/isatty.c (__isatty): Likewise.
* sysdeps/posix/killpg.c (killpg): Likewise.
* sysdeps/posix/libc_fatal.c (__libc_fatal): Likewise.
* sysdeps/posix/mkfifoat.c (mkfifoat): Likewise.
* sysdeps/posix/raise.c (raise): Likewise.
* sysdeps/posix/remove.c (remove): Likewise.
* sysdeps/posix/rename.c (rename): Likewise.
* sysdeps/posix/rewinddir.c (__rewinddir): Likewise.
* sysdeps/posix/seekdir.c (seekdir): Likewise.
* sysdeps/posix/sigblock.c (__sigblock): Likewise.
* sysdeps/posix/sigignore.c (sigignore): Likewise.
* sysdeps/posix/sigintr.c (siginterrupt): Likewise.
* sysdeps/posix/signal.c (__bsd_signal): Likewise.
* sysdeps/posix/sigset.c (sigset): Likewise.
* sysdeps/posix/sigsuspend.c (__sigsuspend): Likewise.
* sysdeps/posix/sysconf.c (__sysconf): Likewise.
* sysdeps/posix/sysv_signal.c (__sysv_signal): Likewise.
* sysdeps/posix/time.c (time): Likewise.
* sysdeps/posix/ttyname.c (getttyname): Likewise.
(ttyname): Likewise.
* sysdeps/posix/ttyname_r.c (__ttyname_r): Likewise.
* sysdeps/posix/utime.c (utime): Likewise.
* sysdeps/powerpc/fpu/s_isnan.c (__isnan): Likewise.
* sysdeps/powerpc/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/powerpc/nptl/pthread_spin_trylock.c
(pthread_spin_trylock): Likewise.
* sysdeps/pthread/aio_error.c (aio_error): Likewise.
* sysdeps/pthread/aio_read.c (aio_read): Likewise.
* sysdeps/pthread/aio_read64.c (aio_read64): Likewise.
* sysdeps/pthread/aio_write.c (aio_write): Likewise.
* sysdeps/pthread/aio_write64.c (aio_write64): Likewise.
* sysdeps/pthread/flockfile.c (__flockfile): Likewise.
* sysdeps/pthread/ftrylockfile.c (__ftrylockfile): Likewise.
* sysdeps/pthread/funlockfile.c (__funlockfile): Likewise.
* sysdeps/pthread/timer_create.c (timer_create): Likewise.
* sysdeps/pthread/timer_getoverr.c (timer_getoverrun): Likewise.
* sysdeps/pthread/timer_gettime.c (timer_gettime): Likewise.
* sysdeps/s390/ffs.c (__ffs): Likewise.
* sysdeps/s390/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/s390/nptl/pthread_spin_trylock.c (pthread_spin_trylock):
Likewise.
* sysdeps/sh/nptl/pthread_spin_lock.c (pthread_spin_lock):
Likewise.
* sysdeps/sparc/nptl/pthread_barrier_destroy.c
(pthread_barrier_destroy): Likewise.
* sysdeps/sparc/nptl/pthread_barrier_wait.c
(__pthread_barrier_wait): Likewise.
* sysdeps/sparc/sparc32/e_sqrt.c (__ieee754_sqrt): Likewise.
* sysdeps/sparc/sparc32/pthread_barrier_wait.c
(__pthread_barrier_wait): Likewise.
* sysdeps/sparc/sparc32/sem_init.c (__old_sem_init): Likewise.
* sysdeps/tile/memcmp.c (memcmp_common_alignment): Likewise.
(memcmp_not_common_alignment): Likewise.
(MEMCMP): Likewise.
* sysdeps/tile/wordcopy.c (_wordcopy_fwd_aligned): Likewise.
(_wordcopy_fwd_dest_aligned): Likewise.
(_wordcopy_bwd_aligned): Likewise.
(_wordcopy_bwd_dest_aligned): Likewise.
* sysdeps/unix/bsd/ftime.c (ftime): Likewise.
* sysdeps/unix/bsd/gtty.c (gtty): Likewise.
* sysdeps/unix/bsd/stty.c (stty): Likewise.
* sysdeps/unix/bsd/tcflow.c (tcflow): Likewise.
* sysdeps/unix/bsd/tcflush.c (tcflush): Likewise.
* sysdeps/unix/bsd/tcgetattr.c (__tcgetattr): Likewise.
* sysdeps/unix/bsd/tcgetpgrp.c (tcgetpgrp): Likewise.
* sysdeps/unix/bsd/tcsendbrk.c (tcsendbreak): Likewise.
* sysdeps/unix/bsd/tcsetattr.c (tcsetattr): Likewise.
* sysdeps/unix/bsd/tcsetpgrp.c (tcsetpgrp): Likewise.
* sysdeps/unix/bsd/ualarm.c (ualarm): Likewise.
* sysdeps/unix/bsd/wait3.c (__wait3): Likewise.
* sysdeps/unix/getlogin_r.c (__getlogin_r): Likewise.
* sysdeps/unix/sockatmark.c (sockatmark): Likewise.
* sysdeps/unix/stime.c (stime): Likewise.
* sysdeps/unix/sysv/linux/_exit.c (_exit): Likewise.
* sysdeps/unix/sysv/linux/aio_sigqueue.c (__aio_sigqueue):
Likewise.  Use internal_function.
* sysdeps/unix/sysv/linux/arm/sigaction.c (__libc_sigaction):
Convert to prototype-style function definition.
* sysdeps/unix/sysv/linux/faccessat.c (faccessat): Likewise.
* sysdeps/unix/sysv/linux/fchmodat.c (fchmodat): Likewise.
* sysdeps/unix/sysv/linux/fpathconf.c (__fpathconf): Likewise.
* sysdeps/unix/sysv/linux/gai_sigqueue.c (__gai_sigqueue):
Likewise.  Use internal_function.
* sysdeps/unix/sysv/linux/gethostid.c (sethostid): Convert to
prototype-style function definition
* sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid):
Likewise.
(__getlogin_r): Likewise.
* sysdeps/unix/sysv/linux/getpt.c (__posix_openpt): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_broadcast.c
(__pthread_cond_broadcast): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_destroy.c
(__pthread_cond_destroy): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_init.c
(__pthread_cond_init): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_signal.c
(__pthread_cond_signal): Likewise.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c
(__pthread_cond_wait): Likewise.
* sysdeps/unix/sysv/linux/i386/getmsg.c (getmsg): Likewise.
* sysdeps/unix/sysv/linux/i386/setegid.c (setegid): Likewise.
* sysdeps/unix/sysv/linux/ia64/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/ia64/sigprocmask.c (__sigprocmask):
Likewise.
* sysdeps/unix/sysv/linux/mips/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/msgget.c (msgget): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
(__ftruncate64): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c
(truncate64): Likewise.
* sysdeps/unix/sysv/linux/pt-raise.c (raise): Likewise.
* sysdeps/unix/sysv/linux/pthread_getcpuclockid.c
(pthread_getcpuclockid): Likewise.
* sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np):
Likewise.
* sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np):
Likewise.
* sysdeps/unix/sysv/linux/pthread_sigmask.c (pthread_sigmask):
Likewise.
* sysdeps/unix/sysv/linux/pthread_sigqueue.c (pthread_sigqueue):
Likewise.
* sysdeps/unix/sysv/linux/raise.c (raise): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c
(__libc_sigaction): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigprocmask.c
(__sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/semget.c (semget): Likewise.
* sysdeps/unix/sysv/linux/semop.c (semop): Likewise.
* sysdeps/unix/sysv/linux/setrlimit64.c (setrlimit64): Likewise.
* sysdeps/unix/sysv/linux/shmat.c (shmat): Likewise.
* sysdeps/unix/sysv/linux/shmdt.c (shmdt): Likewise.
* sysdeps/unix/sysv/linux/shmget.c (shmget): Likewise.
* sysdeps/unix/sysv/linux/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/sigpending.c (sigpending): Likewise.
* sysdeps/unix/sysv/linux/sigprocmask.c (__sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/sigqueue.c (__sigqueue): Likewise.
* sysdeps/unix/sysv/linux/sigstack.c (sigstack): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigprocmask.c
(__sigprocmask): Likewise.
* sysdeps/unix/sysv/linux/speed.c (cfgetospeed): Likewise.
(cfgetispeed): Likewise.
(cfsetospeed): Likewise.
(cfsetispeed): Likewise.
* sysdeps/unix/sysv/linux/tcflow.c (tcflow): Likewise.
* sysdeps/unix/sysv/linux/tcflush.c (tcflush): Likewise.
* sysdeps/unix/sysv/linux/tcgetattr.c (__tcgetattr): Likewise.
* sysdeps/unix/sysv/linux/tcsetattr.c (tcsetattr): Likewise.
* sysdeps/unix/sysv/linux/time.c (time): Likewise.
* sysdeps/unix/sysv/linux/timer_create.c (timer_create): Likewise.
* sysdeps/unix/sysv/linux/timer_delete.c (timer_delete): Likewise.
* sysdeps/unix/sysv/linux/timer_getoverr.c (timer_getoverrun):
Likewise.
* sysdeps/unix/sysv/linux/timer_gettime.c (timer_gettime):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigpending.c (sigpending):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigprocmask.c (__sigprocmask):
Likewise.
* sysdeps/x86_64/backtrace.c (__backtrace): Likewise.

sunrpc: Rewrite with explicit TLS access using __thread

malloc: Rewrite with explicit TLS access using __thread

vfprintf: Rewrite printf_positional to use struct scratch_buffer

Assume that SOCK_CLOEXEC is available and works

This fixes (harmless) data races when accessing the various
__have_sock_cloexec variables.

The va_list pointer is unspecified after a call to vfprintf [BZ #18982]

This adjusts the documentation to the existing implementation.

lt_LT: change currency symbol to the euro [BZ #18953]

Lithuania switched currency to the Euro on 1st Jan 2015.

hu_HU: change time separator to colon [BZ #18918]

The previous (11th) version of the Hungarian spelling rules (released
in 1984) said that the separator had to be a dot, e.g. 10.35 meaning
10 o'clock 35 minutes. glibc correctly implements this.

The brand new (12th) version, in effect since September 1, 2015 adopts
to the common use of colon (especially in the digital world) and
allows to use either separator, without even expressing a preference.

For computer systems, using colons is way more typical and probably
easier to recognize. Dot is typically used in printed materials.

It also avoids an almost ambiguous situation where a space makes a
difference, e.g. "10.15-ig" means "until 10 o'clock 15 minutes"
whereas "10. 15-ig" means "until 15th of October". So I believe using
the colon as the separator is not only more frequent in the computer
world, but is also easier and quicker to recognize for the brain that
it's about hour:minute rather than month and day. And luckily it's now
equally correct according to the official rules.

11th edition: http://helyesiras.mta.hu/helyesiras/default/akh11

12th edition: http://helyesiras.mta.hu/helyesiras/default/akh12

In both editions it's the very last (299th and 300th, respectively) rule.

Microsoft also uses and recommends a colon since at least May 2011:
http://download.microsoft.com/download/e/6/1/e61266b2-d8b4-4fe0-a553-f01dc3976675/hun-hun-StyleGuide.pdf
  The time format is different in common language and in the language of
  IT. In common texts we usually do not abbreviate, so the full forms are
  used: “7 óra 10 perckor csörgött a telefon”. However, the short format,
  consisting of numerals only, can also be used. In this case a period
  must be used between the two numbers and there must not be a space
  between them: “találkozzunk 10.45-kor”.

  However, in software mostly the short format is used, and the numbers
  are separated by a colon. An obvious example is the clock in the bottom
  right corner of your screen, thus 18:31.

Add more libm tests (fabs, fdim, fma, fmax, fmin, fmod).

This patch improves the libm test coverage for a few more functions.

Tested for x86_64 and x86.

* math/libm-test.inc (fabs_test_data): Add more tests.
(fdim_test_data): Likewise.
(fma_test_data): Likewise.
(fmax_test_data): Likewise.
(fmin_test_data): Likewise.
(fmod_test_data): Likewise.

Make performance improvement to MIPS memcpy for small copies.

* sysdeps/mips/memcpy.S (memcpy):  Add word copies for small aligned
data.

Add more tests for ceil, floor, round, trunc.

This patch adds more tests for ceil, floor, round and trunc, with a
particular focus on verifying they don't raise spurious "inexact"
exceptions for integer arguments (a C99 / C11 requirement, as opposed
to the general principle that they shouldn't raise "inexact" for any
arguments at all which is a TS 18661-1 requirement).

Tested for x86_64 and x86.

* math/libm-test.inc (ceil_test_data): Add more tests and more
expectations for "inexact".
(floor_test_data): Add more tests.
(round_test_data): Likewise.
(trunc_test_data): Likewise.

Convert 703 function definitions to prototype style.

This automatically-generated patch converts 703 function definitions
in glibc from old-style K&R to prototype-style.

This conversion is deliberately simplistic, excluding any tricky cases
as even a patch covering only simple cases is still very large.
Currently excluded are: sysdeps files (to improve test coverage for
the initial patch); files containing assertions (to avoid line number
changes so that generated libraries can be compared); any cases where
the generated function declaration would involve lines over 79
characters and so need to be wrapped; any cases with array parameters
or other cases where parameter declarators don't end with the
parameter name; any other cases that my script didn't parse.

I didn't try to make the ChangeLog generation indicate when function
definitions are conditional; it just lists the functions changed
without regard to that.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

* crypt/cert.c (good_bye): Convert to prototype-style function
definition.
(get8): Likewise.
(put8): Likewise.
* crypt/crypt-entry.c (crypt): Likewise.
(__fcrypt): Likewise.
* crypt/crypt_util.c (_ufc_prbits): Likewise.
(_ufc_set_bits): Likewise.
(_ufc_clearmem): Likewise.
(__init_des_r): Likewise.
(shuffle_sb): Likewise.
(shuffle_sb): Likewise.
(_ufc_setup_salt_r): Likewise.
(_ufc_mk_keytab_r): Likewise.
(_ufc_dofinalperm_r): Likewise.
(encrypt): Likewise.
(__setkey_r): Likewise.
(setkey): Likewise.
* crypt/md5.c (md5_init_ctx): Likewise.
(md5_read_ctx): Likewise.
(md5_finish_ctx): Likewise.
(md5_stream): Likewise.
(md5_buffer): Likewise.
(md5_process_bytes): Likewise.
* crypt/sha256.c (__sha256_init_ctx): Likewise.
(__sha256_finish_ctx): Likewise.
(__sha256_process_bytes): Likewise.
* crypt/sha512.c (__sha512_init_ctx): Likewise.
(__sha512_finish_ctx): Likewise.
(__sha512_process_bytes): Likewise.
* ctype/isctype.c (__isctype): Likewise.
* debug/backtrace.c (__backtrace): Likewise.
* debug/backtracesymsfd.c (__backtrace_symbols_fd): Likewise.
* debug/fgets_chk.c (__fgets_chk): Likewise.
* debug/fgets_u_chk.c (__fgets_unlocked_chk): Likewise.
* debug/memcpy_chk.c (__memcpy_chk): Likewise.
* debug/memmove_chk.c (MEMMOVE_CHK): Likewise.
* debug/mempcpy_chk.c (__mempcpy_chk): Likewise.
* debug/memset_chk.c (__memset_chk): Likewise.
* debug/strcat_chk.c (__strcat_chk): Likewise.
* debug/strncat_chk.c (__strncat_chk): Likewise.
* debug/strncpy_chk.c (__strncpy_chk): Likewise.
* debug/vsprintf_chk.c (_IO_str_chk_overflow): Likewise.
* dirent/dirfd.c (dirfd): Likewise.
* dirent/getdents.c (__getdirentries): Likewise.
* dirent/getdents64.c (getdirentries64): Likewise.
* dirent/rewinddir.c (__rewinddir): Likewise.
* dirent/seekdir.c (seekdir): Likewise.
* dirent/telldir.c (telldir): Likewise.
* elf/sln.c (makesymlinks): Likewise.
(makesymlink): Likewise.
* gmon/gmon.c (__moncontrol): Likewise.
(__monstartup): Likewise.
(write_hist): Likewise.
(write_call_graph): Likewise.
(write_bb_counts): Likewise.
* grp/setgroups.c (setgroups): Likewise.
* inet/inet_lnaof.c (inet_lnaof): Likewise.
* inet/inet_net.c (inet_network): Likewise.
* inet/inet_netof.c (inet_netof): Likewise.
* inet/rcmd.c (rresvport_af): Likewise.
(rresvport): Likewise.
* io/access.c (__access): Likewise.
* io/chdir.c (__chdir): Likewise.
* io/chmod.c (__chmod): Likewise.
* io/chown.c (__chown): Likewise.
* io/close.c (__close): Likewise.
* io/creat.c (creat): Likewise.
* io/creat64.c (creat64): Likewise.
* io/dup.c (__dup): Likewise.
* io/dup2.c (__dup2): Likewise.
* io/dup3.c (__dup3): Likewise.
* io/euidaccess.c (__euidaccess): Likewise.
* io/faccessat.c (faccessat): Likewise.
* io/fchmod.c (__fchmod): Likewise.
* io/fchmodat.c (fchmodat): Likewise.
* io/fchown.c (__fchown): Likewise.
* io/fchownat.c (fchownat): Likewise.
* io/fcntl.c (__fcntl): Likewise.
* io/flock.c (__flock): Likewise.
* io/fts.c (fts_load): Likewise.
(fts_close): Likewise.
(fts_read): Likewise.
(fts_set): Likewise.
(fts_children): Likewise.
(fts_build): Likewise.
(fts_stat): Likewise.
(fts_sort): Likewise.
(fts_alloc): Likewise.
(fts_lfree): Likewise.
(fts_palloc): Likewise.
(fts_padjust): Likewise.
(fts_maxarglen): Likewise.
(fts_safe_changedir): Likewise.
* io/getwd.c (getwd): Likewise.
* io/isatty.c (__isatty): Likewise.
* io/lchown.c (__lchown): Likewise.
* io/link.c (__link): Likewise.
* io/linkat.c (linkat): Likewise.
* io/lseek.c (__libc_lseek): Likewise.
* io/mkdir.c (__mkdir): Likewise.
* io/mkdirat.c (mkdirat): Likewise.
* io/mkfifo.c (mkfifo): Likewise.
* io/mkfifoat.c (mkfifoat): Likewise.
* io/open.c (__libc_open): Likewise.
* io/open64.c (__libc_open64): Likewise.
* io/readlink.c (__readlink): Likewise.
* io/readlinkat.c (readlinkat): Likewise.
* io/rmdir.c (__rmdir): Likewise.
* io/symlink.c (__symlink): Likewise.
* io/symlinkat.c (symlinkat): Likewise.
* io/ttyname.c (ttyname): Likewise.
* io/ttyname_r.c (__ttyname_r): Likewise.
* io/umask.c (__umask): Likewise.
* io/unlink.c (__unlink): Likewise.
* io/unlinkat.c (unlinkat): Likewise.
* io/utime.c (utime): Likewise.
* libio/clearerr.c (clearerr): Likewise.
* libio/clearerr_u.c (clearerr_unlocked): Likewise.
* libio/feof.c (_IO_feof): Likewise.
* libio/feof_u.c (feof_unlocked): Likewise.
* libio/ferror.c (_IO_ferror): Likewise.
* libio/ferror_u.c (ferror_unlocked): Likewise.
* libio/filedoalloc.c (_IO_file_doallocate): Likewise.
* libio/fileno.c (__fileno): Likewise.
* libio/fputc.c (fputc): Likewise.
* libio/fputc_u.c (fputc_unlocked): Likewise.
* libio/fputwc.c (fputwc): Likewise.
* libio/fputwc_u.c (fputwc_unlocked): Likewise.
* libio/freopen.c (freopen): Likewise.
* libio/freopen64.c (freopen64): Likewise.
* libio/fseek.c (fseek): Likewise.
* libio/fseeko.c (fseeko): Likewise.
* libio/fseeko64.c (fseeko64): Likewise.
* libio/ftello.c (__ftello): Likewise.
* libio/ftello64.c (ftello64): Likewise.
* libio/fwide.c (fwide): Likewise.
* libio/genops.c (_IO_un_link): Likewise.
(_IO_link_in): Likewise.
(_IO_least_marker): Likewise.
(_IO_switch_to_main_get_area): Likewise.
(_IO_switch_to_backup_area): Likewise.
(_IO_switch_to_get_mode): Likewise.
(_IO_free_backup_area): Likewise.
(_IO_switch_to_put_mode): Likewise.
(__overflow): Likewise.
(__underflow): Likewise.
(__uflow): Likewise.
(_IO_setb): Likewise.
(_IO_doallocbuf): Likewise.
(_IO_default_underflow): Likewise.
(_IO_default_uflow): Likewise.
(_IO_default_xsputn): Likewise.
(_IO_sgetn): Likewise.
(_IO_default_xsgetn): Likewise.
(_IO_sync): Likewise.
(_IO_default_setbuf): Likewise.
(_IO_default_seekpos): Likewise.
(_IO_default_doallocate): Likewise.
(_IO_init): Likewise.
(_IO_old_init): Likewise.
(_IO_default_sync): Likewise.
(_IO_default_finish): Likewise.
(_IO_default_seekoff): Likewise.
(_IO_sputbackc): Likewise.
(_IO_sungetc): Likewise.
(_IO_set_column): Likewise.
(_IO_set_column): Likewise.
(_IO_adjust_column): Likewise.
(_IO_get_column): Likewise.
(_IO_init_marker): Likewise.
(_IO_remove_marker): Likewise.
(_IO_marker_difference): Likewise.
(_IO_marker_delta): Likewise.
(_IO_seekmark): Likewise.
(_IO_unsave_markers): Likewise.
(_IO_nobackup_pbackfail): Likewise.
(_IO_default_pbackfail): Likewise.
(_IO_default_seek): Likewise.
(_IO_default_stat): Likewise.
(_IO_default_read): Likewise.
(_IO_default_write): Likewise.
(_IO_default_showmanyc): Likewise.
(_IO_default_imbue): Likewise.
(_IO_iter_next): Likewise.
(_IO_iter_file): Likewise.
* libio/getc.c (_IO_getc): Likewise.
* libio/getwc.c (_IO_getwc): Likewise.
* libio/iofclose.c (_IO_new_fclose): Likewise.
* libio/iofdopen.c (_IO_new_fdopen): Likewise.
* libio/iofflush.c (_IO_fflush): Likewise.
* libio/iofflush_u.c (__fflush_unlocked): Likewise.
* libio/iofgetpos.c (_IO_new_fgetpos): Likewise.
* libio/iofgetpos64.c (_IO_new_fgetpos64): Likewise.
* libio/iofgets.c (_IO_fgets): Likewise.
* libio/iofgets_u.c (__fgets_unlocked): Likewise.
* libio/iofgetws.c (fgetws): Likewise.
* libio/iofgetws_u.c (fgetws_unlocked): Likewise.
* libio/iofopen64.c (_IO_fopen64): Likewise.
* libio/iofopncook.c (_IO_cookie_read): Likewise.
(_IO_cookie_write): Likewise.
(_IO_cookie_seek): Likewise.
(_IO_cookie_close): Likewise.
(_IO_cookie_seekoff): Likewise.
(_IO_old_cookie_seek): Likewise.
* libio/iofputs.c (_IO_fputs): Likewise.
* libio/iofputs_u.c (__fputs_unlocked): Likewise.
* libio/iofputws.c (fputws): Likewise.
* libio/iofputws_u.c (fputws_unlocked): Likewise.
* libio/iofread.c (_IO_fread): Likewise.
* libio/iofread_u.c (__fread_unlocked): Likewise.
* libio/iofsetpos.c (_IO_new_fsetpos): Likewise.
* libio/iofsetpos64.c (_IO_new_fsetpos64): Likewise.
* libio/ioftell.c (_IO_ftell): Likewise.
* libio/iofwrite.c (_IO_fwrite): Likewise.
* libio/iogetdelim.c (_IO_getdelim): Likewise.
* libio/iogets.c (_IO_gets): Likewise.
* libio/iopadn.c (_IO_padn): Likewise.
* libio/iopopen.c (_IO_new_proc_open): Likewise.
(_IO_new_popen): Likewise.
(_IO_new_proc_close): Likewise.
* libio/ioputs.c (_IO_puts): Likewise.
* libio/ioseekoff.c (_IO_seekoff_unlocked): Likewise.
(_IO_seekoff): Likewise.
* libio/ioseekpos.c (_IO_seekpos_unlocked): Likewise.
(_IO_seekpos): Likewise.
* libio/iosetbuffer.c (_IO_setbuffer): Likewise.
* libio/iosetvbuf.c (_IO_setvbuf): Likewise.
* libio/ioungetc.c (_IO_ungetc): Likewise.
* libio/ioungetwc.c (ungetwc): Likewise.
* libio/iovdprintf.c (_IO_vdprintf): Likewise.
* libio/iovsscanf.c (_IO_vsscanf): Likewise.
* libio/iowpadn.c (_IO_wpadn): Likewise.
* libio/libc_fatal.c (__libc_fatal): Likewise.
* libio/memstream.c (__open_memstream): Likewise.
(_IO_mem_sync): Likewise.
(_IO_mem_finish): Likewise.
* libio/oldfileops.c (_IO_old_file_init): Likewise.
(_IO_old_file_close_it): Likewise.
(_IO_old_file_finish): Likewise.
(_IO_old_file_fopen): Likewise.
(_IO_old_file_attach): Likewise.
(_IO_old_file_setbuf): Likewise.
(_IO_old_do_write): Likewise.
(old_do_write): Likewise.
(_IO_old_file_underflow): Likewise.
(_IO_old_file_overflow): Likewise.
(_IO_old_file_sync): Likewise.
(_IO_old_file_seekoff): Likewise.
(_IO_old_file_write): Likewise.
(_IO_old_file_xsputn): Likewise.
* libio/oldiofclose.c (_IO_old_fclose): Likewise.
* libio/oldiofdopen.c (_IO_old_fdopen): Likewise.
* libio/oldiofgetpos.c (_IO_old_fgetpos): Likewise.
* libio/oldiofgetpos64.c (_IO_old_fgetpos64): Likewise.
* libio/oldiofopen.c (_IO_old_fopen): Likewise.
* libio/oldiofsetpos.c (_IO_old_fsetpos): Likewise.
* libio/oldiofsetpos64.c (_IO_old_fsetpos64): Likewise.
* libio/oldiopopen.c (_IO_old_proc_open): Likewise.
(_IO_old_popen): Likewise.
(_IO_old_proc_close): Likewise.
* libio/oldpclose.c (__old_pclose): Likewise.
* libio/pclose.c (__new_pclose): Likewise.
* libio/peekc.c (_IO_peekc_locked): Likewise.
* libio/putc.c (_IO_putc): Likewise.
* libio/putc_u.c (putc_unlocked): Likewise.
* libio/putchar.c (putchar): Likewise.
* libio/putchar_u.c (putchar_unlocked): Likewise.
* libio/putwc.c (putwc): Likewise.
* libio/putwc_u.c (putwc_unlocked): Likewise.
* libio/putwchar.c (putwchar): Likewise.
* libio/putwchar_u.c (putwchar_unlocked): Likewise.
* libio/rewind.c (rewind): Likewise.
* libio/setbuf.c (setbuf): Likewise.
* libio/setlinebuf.c (setlinebuf): Likewise.
* libio/vasprintf.c (_IO_vasprintf): Likewise.
* libio/vscanf.c (_IO_vscanf): Likewise.
* libio/vsnprintf.c (_IO_strn_overflow): Likewise.
* libio/vswprintf.c (_IO_wstrn_overflow): Likewise.
* libio/wfiledoalloc.c (_IO_wfile_doallocate): Likewise.
* libio/wgenops.c (_IO_least_wmarker): Likewise.
(_IO_switch_to_main_wget_area): Likewise.
(_IO_switch_to_wbackup_area): Likewise.
(_IO_wsetb): Likewise.
(_IO_wdefault_pbackfail): Likewise.
(_IO_wdefault_finish): Likewise.
(_IO_wdefault_uflow): Likewise.
(__woverflow): Likewise.
(__wuflow): Likewise.
(__wunderflow): Likewise.
(_IO_wdefault_xsputn): Likewise.
(_IO_wdefault_xsgetn): Likewise.
(_IO_wdoallocbuf): Likewise.
(_IO_wdefault_doallocate): Likewise.
(_IO_switch_to_wget_mode): Likewise.
(_IO_free_wbackup_area): Likewise.
(_IO_switch_to_wput_mode): Likewise.
(_IO_sputbackwc): Likewise.
(_IO_sungetwc): Likewise.
(_IO_adjust_wcolumn): Likewise.
(_IO_init_wmarker): Likewise.
(_IO_wmarker_delta): Likewise.
(_IO_seekwmark): Likewise.
(_IO_unsave_wmarkers): Likewise.
* libio/wmemstream.c (open_wmemstream): Likewise.
(_IO_wmem_sync): Likewise.
(_IO_wmem_finish): Likewise.
* locale/nl_langinfo.c (nl_langinfo): Likewise.
* locale/nl_langinfo_l.c (__nl_langinfo_l): Likewise.
* locale/programs/simple-hash.c (init_hash): Likewise.
(delete_hash): Likewise.
(insert_entry): Likewise.
(set_entry): Likewise.
(next_prime): Likewise.
(is_prime): Likewise.
* locale/programs/xmalloc.c (fixup_null_alloc): Likewise.
(xmalloc): Likewise.
(xrealloc): Likewise.
* locale/programs/xstrdup.c (xstrdup): Likewise.
* localedata/collate-test.c (xstrcoll): Likewise.
* localedata/xfrm-test.c (xstrcmp): Likewise.
* login/getlogin_r.c (__getlogin_r): Likewise.
* login/getpt.c (__posix_openpt): Likewise.
* login/login_tty.c (login_tty): Likewise.
* login/setlogin.c (setlogin): Likewise.
* mach/msg-destroy.c (__mach_msg_destroy): Likewise.
(mach_msg_destroy_port): Likewise.
(mach_msg_destroy_memory): Likewise.
* malloc/mcheck.c (flood): Likewise.
* misc/acct.c (acct): Likewise.
* misc/brk.c (__brk): Likewise.
* misc/chflags.c (chflags): Likewise.
* misc/chroot.c (chroot): Likewise.
* misc/fchflags.c (fchflags): Likewise.
* misc/fstab.c (getfsspec): Likewise.
(getfsfile): Likewise.
* misc/fsync.c (fsync): Likewise.
* misc/ftruncate.c (__ftruncate): Likewise.
* misc/ftruncate64.c (__ftruncate64): Likewise.
* misc/getdomain.c (getdomainname): Likewise.
(getdomainname): Likewise.
* misc/gethostname.c (__gethostname): Likewise.
* misc/getpass.c (getpass): Likewise.
* misc/getttyent.c (skip): Likewise.
(value): Likewise.
* misc/gtty.c (gtty): Likewise.
* misc/hsearch.c (hsearch): Likewise.
(hcreate): Likewise.
* misc/hsearch_r.c (__hcreate_r): Likewise.
(__hdestroy_r): Likewise.
* misc/ioctl.c (__ioctl): Likewise.
* misc/mkdtemp.c (mkdtemp): Likewise.
* misc/mkostemp.c (mkostemp): Likewise.
* misc/mkostemp64.c (mkostemp64): Likewise.
* misc/mkostemps.c (mkostemps): Likewise.
* misc/mkostemps64.c (mkostemps64): Likewise.
* misc/mkstemp.c (mkstemp): Likewise.
* misc/mkstemp64.c (mkstemp64): Likewise.
* misc/mkstemps.c (mkstemps): Likewise.
* misc/mkstemps64.c (mkstemps64): Likewise.
* misc/mktemp.c (__mktemp): Likewise.
* misc/preadv.c (preadv): Likewise.
* misc/preadv64.c (preadv64): Likewise.
* misc/pwritev.c (pwritev): Likewise.
* misc/pwritev64.c (pwritev64): Likewise.
* misc/readv.c (__readv): Likewise.
* misc/revoke.c (revoke): Likewise.
* misc/setdomain.c (setdomainname): Likewise.
* misc/setegid.c (setegid): Likewise.
* misc/seteuid.c (seteuid): Likewise.
* misc/sethostid.c (sethostid): Likewise.
* misc/sethostname.c (sethostname): Likewise.
* misc/setregid.c (__setregid): Likewise.
* misc/setreuid.c (__setreuid): Likewise.
* misc/sstk.c (sstk): Likewise.
* misc/stty.c (stty): Likewise.
* misc/syscall.c (syscall): Likewise.
* misc/syslog.c (setlogmask): Likewise.
* misc/truncate.c (__truncate): Likewise.
* misc/truncate64.c (truncate64): Likewise.
* misc/ualarm.c (ualarm): Likewise.
* misc/usleep.c (usleep): Likewise.
* misc/ustat.c (ustat): Likewise.
* misc/writev.c (__writev): Likewise.
* nptl/cleanup_compat.c (_pthread_cleanup_pop): Likewise.
* nptl/old_pthread_cond_broadcast.c
(__pthread_cond_broadcast_2_0): Likewise.
* nptl/old_pthread_cond_destroy.c (__pthread_cond_destroy_2_0):
Likewise.
* nptl/old_pthread_cond_signal.c (__pthread_cond_signal_2_0):
Likewise.
* nptl/old_pthread_cond_wait.c (__pthread_cond_wait_2_0):
Likewise.
* nptl/pt-raise.c (raise): Likewise.
* nptl/pthread_barrier_destroy.c (pthread_barrier_destroy):
Likewise.
* nptl/pthread_barrier_wait.c (__pthread_barrier_wait): Likewise.
* nptl/pthread_barrierattr_destroy.c
(pthread_barrierattr_destroy): Likewise.
* nptl/pthread_barrierattr_init.c (pthread_barrierattr_init):
Likewise.
* nptl/pthread_barrierattr_setpshared.c
(pthread_barrierattr_setpshared): Likewise.
* nptl/pthread_cond_broadcast.c (__pthread_cond_broadcast):
Likewise.
* nptl/pthread_cond_destroy.c (__pthread_cond_destroy): Likewise.
* nptl/pthread_cond_init.c (__pthread_cond_init): Likewise.
* nptl/pthread_cond_signal.c (__pthread_cond_signal): Likewise.
* nptl/pthread_condattr_destroy.c (__pthread_condattr_destroy):
Likewise.
* nptl/pthread_condattr_getclock.c (pthread_condattr_getclock):
Likewise.
* nptl/pthread_condattr_getpshared.c
(pthread_condattr_getpshared): Likewise.
* nptl/pthread_condattr_init.c (__pthread_condattr_init):
Likewise.
* nptl/pthread_condattr_setpshared.c
(pthread_condattr_setpshared): Likewise.
* nptl/pthread_detach.c (pthread_detach): Likewise.
* nptl/pthread_equal.c (__pthread_equal): Likewise.
* nptl/pthread_getcpuclockid.c (pthread_getcpuclockid): Likewise.
* nptl/pthread_getspecific.c (__pthread_getspecific): Likewise.
* nptl/pthread_key_delete.c (pthread_key_delete): Likewise.
* nptl/pthread_mutex_consistent.c (pthread_mutex_consistent):
Likewise.
* nptl/pthread_mutex_destroy.c (__pthread_mutex_destroy):
Likewise.
* nptl/pthread_mutex_getprioceiling.c
(pthread_mutex_getprioceiling): Likewise.
* nptl/pthread_mutexattr_destroy.c (__pthread_mutexattr_destroy):
Likewise.
* nptl/pthread_mutexattr_getprotocol.c
(pthread_mutexattr_getprotocol): Likewise.
* nptl/pthread_mutexattr_getpshared.c
(pthread_mutexattr_getpshared): Likewise.
* nptl/pthread_mutexattr_getrobust.c
(pthread_mutexattr_getrobust): Likewise.
* nptl/pthread_mutexattr_gettype.c (pthread_mutexattr_gettype):
Likewise.
* nptl/pthread_mutexattr_init.c (__pthread_mutexattr_init):
Likewise.
* nptl/pthread_mutexattr_setprioceiling.c
(pthread_mutexattr_setprioceiling): Likewise.
* nptl/pthread_mutexattr_setprotocol.c
(pthread_mutexattr_setprotocol): Likewise.
* nptl/pthread_mutexattr_setpshared.c
(pthread_mutexattr_setpshared): Likewise.
* nptl/pthread_mutexattr_setrobust.c
(pthread_mutexattr_setrobust): Likewise.
* nptl/pthread_mutexattr_settype.c (__pthread_mutexattr_settype):
Likewise.
* nptl/pthread_rwlock_destroy.c (__pthread_rwlock_destroy):
Likewise.
* nptl/pthread_rwlockattr_destroy.c (pthread_rwlockattr_destroy):
Likewise.
* nptl/pthread_rwlockattr_getkind_np.c
(pthread_rwlockattr_getkind_np): Likewise.
* nptl/pthread_rwlockattr_getpshared.c
(pthread_rwlockattr_getpshared): Likewise.
* nptl/pthread_rwlockattr_init.c (pthread_rwlockattr_init):
Likewise.
* nptl/pthread_rwlockattr_setkind_np.c
(pthread_rwlockattr_setkind_np): Likewise.
* nptl/pthread_rwlockattr_setpshared.c
(pthread_rwlockattr_setpshared): Likewise.
* nptl/pthread_setcancelstate.c (__pthread_setcancelstate):
Likewise.
* nptl/pthread_setcanceltype.c (__pthread_setcanceltype):
Likewise.
* nptl/pthread_setconcurrency.c (pthread_setconcurrency):
Likewise.
* nptl/pthread_setschedprio.c (pthread_setschedprio): Likewise.
* nptl/pthread_setspecific.c (__pthread_setspecific): Likewise.
* nptl/pthread_spin_destroy.c (pthread_spin_destroy): Likewise.
* nptl/pthread_tryjoin.c (pthread_tryjoin_np): Likewise.
* nptl/sem_close.c (sem_close): Likewise.
* nptl/sem_destroy.c (__new_sem_destroy): Likewise.
* nptl/sem_init.c (__old_sem_init): Likewise.
* nptl/sigaction.c (__sigaction): Likewise.
* nptl/unregister-atfork.c (__unregister_atfork): Likewise.
* posix/_exit.c (_exit): Likewise.
* posix/alarm.c (alarm): Likewise.
* posix/confstr.c (confstr): Likewise.
* posix/fpathconf.c (__fpathconf): Likewise.
* posix/getgroups.c (__getgroups): Likewise.
* posix/getpgid.c (__getpgid): Likewise.
* posix/group_member.c (__group_member): Likewise.
* posix/pathconf.c (__pathconf): Likewise.
* posix/sched_getaffinity.c (sched_getaffinity): Likewise.
* posix/sched_setaffinity.c (sched_setaffinity): Likewise.
* posix/setgid.c (__setgid): Likewise.
* posix/setpgid.c (__setpgid): Likewise.
* posix/setuid.c (__setuid): Likewise.
* posix/sleep.c (__sleep): Likewise.
* posix/sysconf.c (__sysconf): Likewise.
* posix/times.c (__times): Likewise.
* posix/uname.c (__uname): Likewise.
* posix/waitid.c (__waitid): Likewise.
* pwd/getpw.c (__getpw): Likewise.
* resolv/base64.c (b64_pton): Likewise.
* resolv/gai_sigqueue.c (__gai_sigqueue): Likewise.
* resolv/gethnamaddr.c (Dprintf): Likewise.
(gethostbyname): Likewise.
(gethostbyname2): Likewise.
(gethostbyaddr): Likewise.
(_sethtent): Likewise.
(_gethtbyname): Likewise.
(_gethtbyname2): Likewise.
(_gethtbyaddr): Likewise.
(map_v4v6_address): Likewise.
(map_v4v6_hostent): Likewise.
(addrsort): Likewise.
(ht_sethostent): Likewise.
(ht_gethostbyname): Likewise.
(ht_gethostbyaddr): Likewise.
* resolv/inet_net_ntop.c (inet_net_ntop): Likewise.
(inet_net_ntop_ipv4): Likewise.
* resolv/inet_neta.c (inet_neta): Likewise.
* resolv/inet_ntop.c (inet_ntop): Likewise.
(inet_ntop4): Likewise.
(inet_ntop6): Likewise.
* resolv/inet_pton.c (__inet_pton): Likewise.
(inet_pton4): Likewise.
(inet_pton6): Likewise.
* resolv/res_debug.c (loc_aton): Likewise.
(loc_ntoa): Likewise.
* resource/getpriority.c (__getpriority): Likewise.
* resource/getrusage.c (__getrusage): Likewise.
* resource/nice.c (nice): Likewise.
* resource/setpriority.c (__setpriority): Likewise.
* resource/setrlimit64.c (setrlimit64): Likewise.
* resource/vlimit.c (vlimit): Likewise.
* resource/vtimes.c (vtimes): Likewise.
* rt/aio_error.c (aio_error): Likewise.
* rt/aio_return.c (aio_return): Likewise.
* rt/aio_sigqueue.c (__aio_sigqueue): Likewise.
* signal/kill.c (__kill): Likewise.
* signal/killpg.c (killpg): Likewise.
* signal/raise.c (raise): Likewise.
* signal/sigaction.c (__sigaction): Likewise.
* signal/sigaddset.c (sigaddset): Likewise.
* signal/sigaltstack.c (sigaltstack): Likewise.
* signal/sigandset.c (sigandset): Likewise.
* signal/sigblock.c (__sigblock): Likewise.
* signal/sigdelset.c (sigdelset): Likewise.
* signal/sigempty.c (sigemptyset): Likewise.
* signal/sigfillset.c (sigfillset): Likewise.
* signal/sighold.c (sighold): Likewise.
* signal/sigignore.c (sigignore): Likewise.
* signal/sigintr.c (siginterrupt): Likewise.
* signal/sigisempty.c (sigisemptyset): Likewise.
* signal/sigismem.c (sigismember): Likewise.
* signal/signal.c (signal): Likewise.
* signal/sigorset.c (sigorset): Likewise.
* signal/sigpause.c (__sigpause): Likewise.
* signal/sigpending.c (sigpending): Likewise.
* signal/sigprocmask.c (__sigprocmask): Likewise.
* signal/sigrelse.c (sigrelse): Likewise.
* signal/sigreturn.c (__sigreturn): Likewise.
* signal/sigset.c (sigset): Likewise.
* signal/sigsetmask.c (__sigsetmask): Likewise.
* signal/sigstack.c (sigstack): Likewise.
* signal/sigsuspend.c (__sigsuspend): Likewise.
* signal/sigvec.c (sigvec_wrapper_handler): Likewise.
* signal/sysv_signal.c (__sysv_signal): Likewise.
* socket/accept.c (accept): Likewise.
* socket/accept4.c (__libc_accept4): Likewise.
* socket/bind.c (__bind): Likewise.
* socket/connect.c (__connect): Likewise.
* socket/getpeername.c (getpeername): Likewise.
* socket/getsockname.c (__getsockname): Likewise.
* socket/getsockopt.c (getsockopt): Likewise.
* socket/listen.c (__listen): Likewise.
* socket/recv.c (__recv): Likewise.
* socket/recvmsg.c (__recvmsg): Likewise.
* socket/send.c (__send): Likewise.
* socket/sendmsg.c (__sendmsg): Likewise.
* socket/shutdown.c (shutdown): Likewise.
* socket/sockatmark.c (sockatmark): Likewise.
* socket/socket.c (__socket): Likewise.
* stdio-common/ctermid.c (ctermid): Likewise.
* stdio-common/cuserid.c (cuserid): Likewise.
* stdio-common/printf-prs.c (parse_printf_format): Likewise.
* stdio-common/remove.c (remove): Likewise.
* stdio-common/rename.c (rename): Likewise.
* stdio-common/renameat.c (renameat): Likewise.
* stdio-common/tempname.c (__gen_tempname): Likewise.
* stdio-common/xbug.c (InitBuffer): Likewise.
(AppendToBuffer): Likewise.
(ReadFile): Likewise.
* stdlib/a64l.c (a64l): Likewise.
* stdlib/drand48_r.c (drand48_r): Likewise.
* stdlib/getcontext.c (getcontext): Likewise.
* stdlib/getenv.c (getenv): Likewise.
* stdlib/l64a.c (l64a): Likewise.
* stdlib/llabs.c (llabs): Likewise.
* stdlib/lldiv.c (lldiv): Likewise.
* stdlib/lrand48_r.c (lrand48_r): Likewise.
* stdlib/mrand48_r.c (mrand48_r): Likewise.
* stdlib/putenv.c (putenv): Likewise.
* stdlib/random.c (__srandom): Likewise.
(__initstate): Likewise.
(__setstate): Likewise.
* stdlib/random_r.c (__srandom_r): Likewise.
(__setstate_r): Likewise.
(__random_r): Likewise.
* stdlib/secure-getenv.c (__libc_secure_getenv): Likewise.
* stdlib/setcontext.c (setcontext): Likewise.
* stdlib/setenv.c (setenv): Likewise.
(unsetenv): Likewise.
* stdlib/srand48.c (srand48): Likewise.
* stdlib/srand48_r.c (__srand48_r): Likewise.
* stdlib/swapcontext.c (swapcontext): Likewise.
* stdlib/system.c (__libc_system): Likewise.
* stdlib/tst-strtod.c (expand): Likewise.
* stdlib/tst-strtol.c (expand): Likewise.
* stdlib/tst-strtoll.c (expand): Likewise.
* streams/fattach.c (fattach): Likewise.
* streams/fdetach.c (fdetach): Likewise.
* streams/getmsg.c (getmsg): Likewise.
* streams/isastream.c (isastream): Likewise.
* string/ffs.c (__ffs): Likewise.
* string/ffsll.c (ffsll): Likewise.
* string/memcmp.c (memcmp_common_alignment): Likewise.
(memcmp_not_common_alignment): Likewise.
(MEMCMP): Likewise.
* string/memcpy.c (memcpy): Likewise.
* string/memmove.c (MEMMOVE): Likewise.
* string/memset.c (memset): Likewise.
* string/rawmemchr.c (RAWMEMCHR): Likewise.
* string/strchrnul.c (STRCHRNUL): Likewise.
* string/strerror.c (strerror): Likewise.
* string/strndup.c (__strndup): Likewise.
* string/strverscmp.c (__strverscmp): Likewise.
* sunrpc/clnt_raw.c (clntraw_freeres): Likewise.
* sunrpc/clnt_tcp.c (clnttcp_geterr): Likewise.
(clnttcp_freeres): Likewise.
* sunrpc/clnt_unix.c (clntunix_freeres): Likewise.
* sunrpc/pmap_prot.c (xdr_pmap): Likewise.
* sunrpc/pmap_prot2.c (xdr_pmaplist): Likewise.
* sunrpc/pmap_rmt.c (xdr_rmtcallres): Likewise.
* sunrpc/rpc_prot.c (xdr_replymsg): Likewise.
(xdr_callhdr): Likewise.
* sunrpc/rpcinfo.c (udpping): Likewise.
(tcpping): Likewise.
(pstatus): Likewise.
(pmapdump): Likewise.
(brdcst): Likewise.
(deletereg): Likewise.
(getprognum): Likewise.
(getvers): Likewise.
(get_inet_address): Likewise.
* sunrpc/svc_raw.c (svcraw_recv): Likewise.
* sunrpc/svc_udp.c (svcudp_create): Likewise.
(svcudp_stat): Likewise.
(svcudp_recv): Likewise.
(svcudp_reply): Likewise.
(svcudp_getargs): Likewise.
(svcudp_freeargs): Likewise.
(svcudp_destroy): Likewise.
* sunrpc/xdr.c (xdr_bytes): Likewise.
(xdr_netobj): Likewise.
(xdr_string): Likewise.
(xdr_wrapstring): Likewise.
* sunrpc/xdr_float.c (xdr_float): Likewise.
(xdr_double): Likewise.
* sunrpc/xdr_mem.c (xdrmem_setpos): Likewise.
* sunrpc/xdr_ref.c (xdr_pointer): Likewise.
* sysvipc/ftok.c (ftok): Likewise.
* sysvipc/msgctl.c (msgctl): Likewise.
* sysvipc/msgget.c (msgget): Likewise.
* sysvipc/msgrcv.c (msgrcv): Likewise.
* sysvipc/msgsnd.c (msgsnd): Likewise.
* sysvipc/semget.c (semget): Likewise.
* sysvipc/semop.c (semop): Likewise.
* sysvipc/shmat.c (shmat): Likewise.
* sysvipc/shmctl.c (shmctl): Likewise.
* sysvipc/shmdt.c (shmdt): Likewise.
* sysvipc/shmget.c (shmget): Likewise.
* termios/cfmakeraw.c (cfmakeraw): Likewise.
* termios/speed.c (cfgetospeed): Likewise.
(cfgetispeed): Likewise.
(cfsetospeed): Likewise.
(cfsetispeed): Likewise.
* termios/tcflow.c (tcflow): Likewise.
* termios/tcflush.c (tcflush): Likewise.
* termios/tcgetattr.c (__tcgetattr): Likewise.
* termios/tcgetpgrp.c (tcgetpgrp): Likewise.
* termios/tcgetsid.c (tcgetsid): Likewise.
* termios/tcsendbrk.c (tcsendbreak): Likewise.
* termios/tcsetpgrp.c (tcsetpgrp): Likewise.
* time/adjtime.c (__adjtime): Likewise.
* time/dysize.c (dysize): Likewise.
* time/ftime.c (ftime): Likewise.
* time/getitimer.c (__getitimer): Likewise.
* time/gettimeofday.c (__gettimeofday): Likewise.
* time/gmtime.c (__gmtime_r): Likewise.
(gmtime): Likewise.
* time/localtime.c (__localtime_r): Likewise.
(localtime): Likewise.
* time/offtime.c (__offtime): Likewise.
* time/settimeofday.c (__settimeofday): Likewise.
* time/stime.c (stime): Likewise.
* time/strftime_l.c (tm_diff): Likewise.
(iso_week_days): Likewise.
* time/strptime.c (strptime): Likewise.
* time/time.c (time): Likewise.
* time/timespec_get.c (timespec_get): Likewise.
* time/tzset.c (tzset_internal): Likewise.
(compute_change): Likewise.
(__tz_compute): Likewise.
* wcsmbs/btowc.c (__btowc): Likewise.
* wcsmbs/mbrlen.c (__mbrlen): Likewise.
* wcsmbs/mbsinit.c (__mbsinit): Likewise.
* wcsmbs/mbsrtowcs.c (__mbsrtowcs): Likewise.
* wcsmbs/wcpcpy.c (__wcpcpy): Likewise.
* wcsmbs/wcpncpy.c (__wcpncpy): Likewise.
* wcsmbs/wcscat.c (__wcscat): Likewise.
* wcsmbs/wcschrnul.c (__wcschrnul): Likewise.
* wcsmbs/wcscmp.c (WCSCMP): Likewise.
* wcsmbs/wcscpy.c (WCSCPY): Likewise.
* wcsmbs/wcscspn.c (wcscspn): Likewise.
* wcsmbs/wcsdup.c (wcsdup): Likewise.
* wcsmbs/wcslen.c (__wcslen): Likewise.
* wcsmbs/wcsncat.c (WCSNCAT): Likewise.
* wcsmbs/wcsncmp.c (WCSNCMP): Likewise.
* wcsmbs/wcsncpy.c (__wcsncpy): Likewise.
* wcsmbs/wcsnlen.c (__wcsnlen): Likewise.
* wcsmbs/wcspbrk.c (wcspbrk): Likewise.
* wcsmbs/wcsrchr.c (WCSRCHR): Likewise.
* wcsmbs/wcsspn.c (wcsspn): Likewise.
* wcsmbs/wcsstr.c (wcsstr): Likewise.
* wcsmbs/wcstok.c (wcstok): Likewise.
* wcsmbs/wctob.c (wctob): Likewise.
* wcsmbs/wmemchr.c (__wmemchr): Likewise.
* wcsmbs/wmemcmp.c (WMEMCMP): Likewise.
* wcsmbs/wmemcpy.c (__wmemcpy): Likewise.
* wcsmbs/wmemmove.c (__wmemmove): Likewise.
* wcsmbs/wmempcpy.c (__wmempcpy): Likewise.
* wcsmbs/wmemset.c (__wmemset): Likewise.
* wctype/wcfuncs.c (__towlower): Likewise.
(__towupper): Likewise.

Fix i386 build for lll_unlock_elision change.

Tested for i386.

* sysdeps/unix/sysv/linux/i386/lowlevellock.h
(lll_unlock_elision): Add adapt_count parameter.

Remove NPTL configure errors based on top-level configure tests.

sysdeps/nptl/configure.ac has code to give errors if certain tests in
the top-level configure failed.  However, all those failure conditions
also produce errors in the top-level configure, so the errors in the
NPTL configure are completely redundant; this patch removes them.

(As suggested in
<https://sourceware.org/ml/libc-alpha/2015-10/msg00510.html>, I think
the top-level tests in question can be completely removed as
unnecessary given the version tests.  But even without that there is
clearly no point in duplicating code that gives an error if the test
fails.)

Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by the patch).

* sysdeps/nptl/configure.ac: Do not give errors based on the
results of top-level configure tests.
* sysdeps/nptl/configure: Regenerated.

Remove -Bgroup configure test.

There is a configure test for the -Bgroup linker option whose results
aren't used anywhere.  This patch removes that test.

Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by the patch).

* configure.ac (libc_cv_Bgroup): Remove configure test.
* configure: Regenerated.
* config.make.in (have-Bgroup): Remove variable.

Remove sizeof (long double) configure test.

There is a configure test for sizeof (long double) whose results
aren't used anywhere.  This patch removes that test.

Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by the patch).

* configure.ac (sizeof_long_double): Remove configure test.
* configure: Regenerated.
* config.make.in (sizeof-long-double): Remove variable.

Remove -fexceptions configure test.

There is a configure test for -fexceptions.  This option was added in
GCC 2.8, so the test is obsolete - and indeed plenty of code is using
-fexceptions directly.  This patch removes the configure test and
makes all uses of $(exceptions) use -fexceptions directly.

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

* configure.ac (libc_cv_gcc_exceptions): Remove configure test.
* configure: Regenerated.
* sysdeps/arm/configure.ac (libc_cv_gcc_exceptions): Do not set
variable.
(exceptions): Likewise.
* sysdeps/arm/configure: Regenerated.
* config.make.in (exceptions): Remove variable.
* Makeconfig (uses-callbacks): Use -fexceptions instead of
$(exceptions).
* debug/Makefile (CFLAGS-dprintf_chk.c): Likewise.
(CFLAGS-vdprintf_chk.c): Likewise.
(CFLAGS-printf_chk.c): Likewise.
(CFLAGS-fprintf_chk.c): Likewise.
(CFLAGS-vprintf_chk.c): Likewise.
(CFLAGS-vfprintf_chk.c): Likewise.
(CFLAGS-gets_chk.c): Likewise.
(CFLAGS-fgets_chk.c): Likewise.
(CFLAGS-fgets_u_chk.c): Likewise.
(CFLAGS-fread_chk.c): Likewise.
(CFLAGS-fread_u_chk.c): Likewise.
(CFLAGS-wprintf_chk.c): Likewise.
(CFLAGS-fwprintf_chk.c): Likewise.
(CFLAGS-vwprintf_chk.c): Likewise.
(CFLAGS-vfwprintf_chk.c): Likewise.
(CFLAGS-fgetws_chk.c): Likewise.
(CFLAGS-fgetws_u_chk.c): Likewise.
* libio/Makefile (CFLAGS-fileops.c): Likewise.
(CFLAGS-fputc.c): Likewise.
(CFLAGS-fputwc.c): Likewise.
(CFLAGS-freopen64.c): Likewise.
(CFLAGS-freopen.c): Likewise.
(CFLAGS-fseek.c): Likewise.
(CFLAGS-fseeko64.c): Likewise.
(CFLAGS-fseeko.c): Likewise.
(CFLAGS-ftello64.c): Likewise.
(CFLAGS-ftello.c): Likewise.
(CFLAGS-fwide.c): Likewise.
(CFLAGS-genops.c): Likewise.
(CFLAGS-getc.c): Likewise.
(CFLAGS-getchar.c): Likewise.
(CFLAGS-getwc.c): Likewise.
(CFLAGS-getwchar.c): Likewise.
(CFLAGS-iofclose.c): Likewise.
(CFLAGS-iofflush.c): Likewise.
(CFLAGS-iofgetpos64.c): Likewise.
(CFLAGS-iofgetpos.c): Likewise.
(CFLAGS-iofgets.c): Likewise.
(CFLAGS-iofgetws.c): Likewise.
(CFLAGS-iofputs.c): Likewise.
(CFLAGS-iofputws.c): Likewise.
(CFLAGS-iofread.c): Likewise.
(CFLAGS-iofsetpos64.c): Likewise.
(CFLAGS-iofsetpos.c): Likewise.
(CFLAGS-ioftell.c): Likewise.
(CFLAGS-iofwrite.c): Likewise.
(CFLAGS-iogetdelim.c): Likewise.
(CFLAGS-iogetline.c): Likewise.
(CFLAGS-iogets.c): Likewise.
(CFLAGS-iogetwline.c): Likewise.
(CFLAGS-ioputs.c): Likewise.
(CFLAGS-ioseekoff.c): Likewise.
(CFLAGS-ioseekpos.c): Likewise.
(CFLAGS-iosetbuffer.c): Likewise.
(CFLAGS-iosetvbuf.c): Likewise.
(CFLAGS-ioungetc.c): Likewise.
(CFLAGS-ioungetwc.c): Likewise.
(CFLAGS-oldfileops.c): Likewise.
(CFLAGS-oldiofclose.c): Likewise.
(CFLAGS-oldiofgetpos64.c): Likewise.
(CFLAGS-oldiofgetpos.c): Likewise.
(CFLAGS-oldiofsetpos64.c): Likewise.
(CFLAGS-oldiofsetpos.c): Likewise.
(CFLAGS-peekc.c): Likewise.
(CFLAGS-putc.c): Likewise.
(CFLAGS-putchar.c): Likewise.
(CFLAGS-putwc.c): Likewise.
(CFLAGS-putwchar.c): Likewise.
(CFLAGS-rewind.c): Likewise.
(CFLAGS-wfileops.c): Likewise.
(CFLAGS-wgenops.c): Likewise.
(CFLAGS-oldiofopen.c): Likewise.
(CFLAGS-iofopen.c): Likewise.
(CFLAGS-iofopen64.c): Likewise.
(CFLAGS-oldtmpfile.c): Likewise.
* stdio-common/Makefile (CFLAGS-vfprintf.c): Likewise.
(CFLAGS-fprintf.c): Likewise.
(CFLAGS-printf.c): Likewise.
(CFLAGS-vfwprintf.c): Likewise.
(CFLAGS-vfscanf.c): Likewise.
(CFLAGS-vfwscanf.c): Likewise.
(CFLAGS-fscanf.c): Likewise.
(CFLAGS-scanf.c): Likewise.
(CFLAGS-isoc99_vfscanf.c): Likewise.
(CFLAGS-isoc99_vscanf.c): Likewise.
(CFLAGS-isoc99_fscanf.c): Likewise.
(CFLAGS-isoc99_scanf.c): Likewise.
* wcsmbs/Makefile (CFLAGS-isoc99_wscanf.c): Likewise.
(CFLAGS-isoc99_fwscanf.c): Likewise.
(CFLAGS-isoc99_vwscanf.c): Likewise.
(CFLAGS-isoc99_vfwscanf.c): Likewise.

Do not leave files behind in /tmp from testing.

I noticed that glibc testsuite runs left several files behind in /tmp
(or TMPDIR, if different).  The problem was testcases that generate a
template for mkstemp / mkstemp64, ending with XXXXXX, then pass that
template to add_temp_file before calling mkstemp / mkstemp64, meaning
that the template ending with XXXXXX is stored in the list of
temporary files to delete (add_temp_file uses strdup so that the
original string doesn't need to stay live), not the actual filename as
determined by mkstemp / mkstemp64.  This patch fixes those tests to
call add_temp_file later.

Tested for x86_64 (that the files are no longer left behind by a
testsuite run and the modified tests still pass).

* io/test-lfs.c (do_prepare): Do not call add_temp_file until
after mkstemp64.
* login/tst-utmp.c (do_prepare): Likewise.
* rt/tst-aio.c (do_prepare): Likewise.
* rt/tst-aio64.c (do_prepare): Likewise.

powerpc: Optimize lock elision for pthread_mutex_t

With TLE enabled, the adapt count variable update incurs
an 8% overhead before entering the critical section of an
elided mutex.

Instead, if it is done right after leaving the critical
section, this serialization can be avoided.

This alters the existing behavior of __lll_trylock_elision
as it will only decrement the adapt_count if it successfully
acquires the lock.

* sysdeps/unix/sysv/linux/powerpc/elision-lock.c
(__lll_lock_elision): Remove adapt_count decrement...
* sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
(__lll_trylock_elision): Likewise.
* sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
(__lll_unlock_elision): ... to here. And utilize
new adapt_count parameter.
* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
(__lll_unlock_elision): Update to include adapt_count
parameter.
(lll_unlock_elision): Pass pointer to adapt_count
variable.

nptl: Add adapt_count parameter to lll_unlock_elision

Adding this parameter will give architectures more freedom in
how they choose to update this variable.  This change has no
effect on architectures which choose not to use it.

* nptl/pthread_mutex_unlock.c(lll_unlock_elision):
Add elision adapt_count parameter to list of arguments.
* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
(lll_unlock_elision): Update with new parameter list
* sysdeps/unix/sysv/linux/s390/lowlevellock.h
(lll_unlock_elision): Likewise
* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
(lll_unlock_elision): Likewise

Mark ld.so internel __uname hidden

Since ld.so internel __uname is only used internally in ld.so, it can
be made hidden.

[BZ #19122]
* include/sys/utsname.h [IS_IN (rtld)] (__uname): Add
attribute_hidden.

Mark ld.so internel string functions hidden

Since ld.so internel string functions are only used internally in
ld.so, they can be made hidden.

[BZ #19122]
* include/string.h [IS_IN (rtld)] (__stpcpy): Add
attribute_hidden.
[IS_IN (rtld)] (__strdup): Likewise.
[IS_IN (rtld)] (__strerror_r): Likewise.
[IS_IN (rtld)] (__strsep_g): Likewise.
[IS_IN (rtld)] (memchr): Likewise.
[IS_IN (rtld)] (memcmp): Likewise.
[IS_IN (rtld)] (memcpy): Likewise.
[IS_IN (rtld)] (memmove): Likewise.
[IS_IN (rtld)] (memset): Likewise.
[IS_IN (rtld)] (rawmemchr): Likewise.
[IS_IN (rtld)] (stpcpy): Likewise.
[IS_IN (rtld)] (strchr): Likewise.
[IS_IN (rtld)] (strcmp): Likewise.
[IS_IN (rtld)] (strlen): Likewise.
[IS_IN (rtld)] (strnlen): Likewise.
[IS_IN (rtld)] (strsep): Likewise.

Mark ld.so internel stdlib functions hidden

Since ld.so internel stdlib functions are only used internally in
ld.so, they can be made hidden.

[BZ #19122]
* include/stdlib.h [IS_IN (rtld)] (unsetenv): Add
attribute_hidden.
[IS_IN (rtld)] (__strtoul_internal): Likewise.

Mark ld.so internel sigaction functions hidden

Since ld.so internel sigaction functions are only used internally in
ld.so, they can be made hidden.

[BZ #19122]
* include/signal.h [IS_IN (rtld)] (__sigaction): Add
attribute_hidden.
[IS_IN (rtld)] (__libc_sigaction): Likewise.

Mark internal setjmp functions hidden

Since internal dirent functions are only used internally in ld.so and
libc.so, they can be made hidden.

[BZ #19122]
* include/setjmp.h (__longjmp): Add attribute_hidden.
[IS_IN (rtld)] (__sigsetjmp): Likewise.

Mark ld.so internel __profile_frequency hidden

Since ld.so internel __profile_frequency is only used internally in
ld.so, it can be made hidden.

[BZ #19122]
* include/libc-internal.h [IS_IN (rtld)] (__profile_frequency):
Add attribute_hidden.

Mark internal fcntl functions hidden

Since internal fcntl functions are only used internally in ld.so and
libc.so, they can be made hidden.

[BZ #19122]
* include/fcntl.h (__libc_fcntl): Add attribute_hidden.
[IS_IN (rtld)] (__open): Likewise.
[IS_IN (rtld)] (__fcntl): Likewise.

Mark internal dirent functions hidden

Since internal dirent functions are only used internally in ld.so and
libc.so, they can be made hidden.

[BZ #19122]
* include/dirent.h (__opendirat): Add attribute_hidden.
(__getdents): Likewise.
(__getdents64): Likewise.
(__alloc_dir): Likewise.
[IS_IN (rtld)] (__closedir): Likewise.
[IS_IN (rtld)] (__fdopendir): Likewise.
[IS_IN (rtld)] (__readdir): Likewise.
[IS_IN (rtld)] (__readdir64): Likewise.
[IS_IN (rtld)] (__rewinddir): Likewise.

Mark _dl_catch_error hidden

Since _dl_catch_error is only used internally in ld.so, it should be
declared in sysdeps/generic/ldsodefs.h, not include/dlfcn.h and it can
be made hidden.

[BZ #19122]
* include/dlfcn.h (_dl_catch_error): Moved to ...
* sysdeps/generic/ldsodefs.h (_dl_catch_error): Add
attribute_hidden.

Mark internal _itoa functions hidden

Since internal _itoa functions are only used internally in ld.so and
libc.so, they can be made hidden.

[BZ #19122]
* sysdeps/generic/_itoa.h (_itoa): Add attribute_hidden.
(_itoa_word): Likewise.

Mark internal _dl_XXX functions hidden

Since internal _dl_XXX functions are only used internally in ld.so,
they can be made hidden.

[BZ #19122]
* elf/dl-runtime.c (_dl_fixup): Add attribute_hidden.
* elf/dynamic-link.h (_dl_try_allocate_static_tls): Likewise.
* sysdeps/generic/dl-cache.h (_dl_cache_libcmp): Likewise.
* sysdeps/generic/ldsodefs.h (_dl_name_match_p): Likewise.
(_dl_higher_prime_number): Likewise.
(_dl_debug_printf_c): Likewise.
(_dl_signal_cerror): Likewise.
(_dl_receive_error): Likewise.
(_dl_reloc_bad_type): Likewise.
(_dl_resolve_conflicts): Likewise.
(_dl_check_all_versions): Likewise.
(_dl_check_map_versions): Likewise.
(_dl_sort_fini): Likewise.
(_dl_debug_initialize): Likewise.
(_dl_init_paths): Likewise.
(_dl_show_auxv): Likewise.
(_dl_next_ld_env_entry): Likewise.
(_dl_important_hwcaps): Likewise.
(_dl_load_cache_lookup): Likewise.
(_dl_update_slotinfo): Likewise.
(_dl_show_scope): Likewise.

Mark _wordcopy_XXX functions hidden

Since _wordcopy_XXX functions are only used internally in ld.so and
libc.so, they can be made hidden.

[BZ #19122]
* sysdeps/generic/memcopy.h (_wordcopy_fwd_aligned): Add
attribute_hidden.
(_wordcopy_fwd_dest_aligned): Likewise.
(_wordcopy_bwd_aligned): Likewise.
(_wordcopy_bwd_dest_aligned): Likewise.

Mark x86 _dl_unmap/_dl_make_tlsdesc_dynamic hidden

Since x86 _dl_unmap and _dl_make_tlsdesc_dynamic are only used
internally in ld.so, they can be made hidden.

[BZ #19122]
* sysdeps/i386/dl-lookupcfg.h (_dl_unmap): Add attribute_hidden.
* sysdeps/i386/dl-tlsdesc.h (_dl_make_tlsdesc_dynamic):
Likewise.
* sysdeps/x86_64/dl-tlsdesc.h (_dl_make_tlsdesc_dynamic):
Likewise.
* sysdeps/x86_64/dl-lookupcfg.h (_dl_unmap): Likewise.

Add comments for GCC 5 requirement

* sysdeps/unix/sysv/linux/i386/sysdep.h: Add comments for
GCC 5 requirement.

Remove assembler -mtune=i686 configure test.

There is a configure test for assembler support for -mtune=i686.  This
option was added in binutils 2.18 so the test is obsolete; this patch
removes it.

Tested for x86 (testsuite, and that installed shared libraries are
unchanged by the patch).

* sysdeps/i386/configure.ac (libc_cv_as_i686): Remove configure
test.
* sysdeps/i386/configure: Regenerated.
* sysdeps/i386/i686/Makefile [$(config-asflags-i686) = yes]: Make
code unconditional.

Remove .previous, .popsection configure tests.

There is a configure test for the assembler .previous directive, and,
as a fallback, for .popsection.

glibc now only supports ELF.  For ELF, the GNU assembler has supported
.previous since version 2.2 (support added by

Mon Jul 19 15:21:20 1993  Ken Raeburn  (raeburn@rtl.cygnus.com)

        * config/obj-elf.c (obj_elf_previous): New function.
        (previous_section, previous_subsection): New vars.
        (obj_elf_section): Save current place in case DWARF code wants us
        to pop back to it.  Handle unquoted section name as well as quoted
        section name.  Don't crash on invalid strings.
        (obj_pseudo_table): Handle new pseudos "previous", "2byte", and
        "4byte".

).  Thus this configure test is obsolete, and this patch removes it
(and with it the fallback .popsection test).

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

* configure.ac (libc_cv_asm_previous_directive): Remove configure
test.
(libc_cv_asm_popsection_directive): Likewise.
* configure: Regenerated.
* config.h.in (HAVE_ASM_PREVIOUS_DIRECTIVE): Remove #undef.
(HAVE_ASM_POPSECTION_DIRECTIVE): Likewise.
* include/libc-symbols.h [HAVE_ASM_PREVIOUS_DIRECTIVE]
(__make_section_unallocated): Make definition unconditional.
[HAVE_ASM_POPSECTION_DIRECTIVE] (__make_section_unallocated):
Remove conditional definition.
[!HAVE_ASM_PREVIOUS_DIRECTIVE && !HAVE_ASM_POPSECTION_DIRECTIVE]
(__make_section_unallocated): Likewise.

Remove -static-libgcc configure test.

There is a configure test for -static-libgcc.  GCC added this option
in version 3.0, so this test is obsolete; this patch removes it.

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

* configure.ac (libc_cv_gcc_static_libgcc): Remove configure test.
* configure: Regenerated.
* config.make.in (static-libgcc): Remove variable.
* Makerules (build-shlib-helper): Use -static-libgcc instead of
$(static-libgcc).
(build-module-helper): Likewise.

Remove stddef.h configure test.

There is a configure test "for libc-friendly stddef.h", which sets a
makefile variable stddef.h that appears to be nowhere used.  It
appears the uses of this variable were removed by:

Tue Feb 21 00:10:50 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>

        * Makefile (headers): Remove $(stddef.h).
        * Makeconfig (stddef.h): Variable removed; now require gcc version
        >= 2.2.
        * stddef.h: File removed.

(having been added by

Wed May 26 14:44:19 1993  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * configure.in (autoconf checks): Add new check for a
        libc-friendly stddef.h.

so the test was of use for less than two years, before being obsolete
for over 20 years).  This patch removes the test.

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

* configure.ac (libc_cv_friendly_stddef): Remove configure test.
* configure: Regenerated.

vfscanf: Use struct scratch_buffer instead of extend_alloca

A custom character buffer is added in this commit, in the form of
struct char_buffer.  The char_buffer_add function replaces the
ADDW macro (which has grown with each successive security fix).
The char_buffer_add slow path is moved out-of-line, reducing
code size.

* stdio-common/vfscanf.c (MEMCPY): Remove macro.
(struct char_buffer): New type.
(char_buffer_start, char_buffer_size, char_buffer_error)
(char_buffer_rewind, char_buffer_add): New functions.
(ADDW): Remove macro, replaced by the char_buffer_add function.
(_IO_vfscanf_internal): Rewrite using struct char_buffer instead
of extend_alloca.  Make control flow more explicit.

Remove i386/epoll_pwait.S

Only i386 implements epoll_pwait in assembly code withot cancellation
support.  All other architectures implement epoll_pwait in epoll_pwait.c
with

int epoll_pwait (int epfd, struct epoll_event *events,
 int maxevents, int timeout,
 const sigset_t *set)
{
  return SYSCALL_CANCEL (epoll_pwait, epfd, events, maxevents,
 timeout, set, _NSIG / 8);
}

Although there is no test for epoll_pwait in glibc, since SYSCALL_CANCEL
works on i386 and epoll_pwait.c works for other architectures, it is
safe to assume that epoll_pwait.c with SYSCALL_CANCEL also works on
i386.

[BZ #19137]
* sysdeps/unix/sysv/linux/i386/Makefile (CFLAGS-epoll_pwait.c):
Add -fomit-frame-pointer.
* sysdeps/unix/sysv/linux/i386/epoll_pwait.S: Remove file.

Optimize i386 syscall inlining for GCC 5

Since GCC 5 and above can properly spill %ebx when needed, we can inline
syscalls with 6 arguments if GCC 5 or above is used to compile glibc.
This patch rewrites INTERNAL_SYSCALL macros and skips __libc_do_syscall
for GCC 5.

For sysdeps/unix/sysv/linux/i386/brk.c, with -O2 -march=i686
-mtune=generic, GCC 5.2 now generates:

<__brk>:
   0: push   %ebx
   1: mov    $0x2d,%eax
   6: mov    0x8(%esp),%ebx
   a: call   b <__brk+0xb> b: R_386_PC32 __x86.get_pc_thunk.dx
   f: add    $0x2,%edx 11: R_386_GOTPC _GLOBAL_OFFSET_TABLE_
  15: call   *%gs:0x10
  1c: mov    0x0(%edx),%edx 1e: R_386_GOT32 __curbrk
  22: cmp    %eax,%ebx
  24: mov    %eax,(%edx)
  26: ja     30 <__brk+0x30>
  28: xor    %eax,%eax
  2a: pop    %ebx
  2b: ret

instead of

<__brk>:
   0: push   %ebx
   1: mov    0x8(%esp),%ecx
   5: call   6 <__brk+0x6> 6: R_386_PC32 __x86.get_pc_thunk.bx
   a: add    $0x2,%ebx c: R_386_GOTPC _GLOBAL_OFFSET_TABLE_
  10: xchg   %ecx,%ebx
  12: mov    $0x2d,%eax
  17: call   *%gs:0x10
  1e: xchg   %ecx,%ebx
  20: mov    %eax,%edx
  22: mov    0x0(%ebx),%eax 24: R_386_GOT32 __curbrk
  28: mov    %edx,(%eax)
  2a: xor    %eax,%eax
  2c: cmp    %edx,%ecx
  2e: ja     38 <__brk+0x38>
  30: pop    %ebx
  31: ret

The new one is shorter by 2 instructions.

* sysdeps/unix/sysv/linux/i386/libc-do-syscall.S
(__libc_do_syscall): Defined only if !__GNUC_PREREQ (5,0).
* sysdeps/unix/sysv/linux/i386/sysdep.h: Define assembler macros
only if !__GNUC_PREREQ (5,0).
(INTERNAL_SYSCALL_MAIN_6): Optimize for GCC 5.
(INTERNAL_SYSCALL_MAIN_INLINE): Likewise.
(INTERNAL_SYSCALL_NCS): Likewise.
(LOADREGS_0): New macro for GCC 5.
(ASMARGS_0): Likewise.
(LOADREGS_1): Likewise.
(ASMARGS_1): Likewise.
(LOADREGS_2): Likewise.
(ASMARGS_2): Likewise.
(LOADREGS_3): Likewise.
(ASMARGS_3): Likewise.
(LOADREGS_4): Likewise.
(ASMARGS_4): Likewise.
(LOADREGS_5): Likewise.
(ASMARGS_5): Likewise.
(LOADREGS_6): Likewise.
(ASMARGS_6): Likewise.

i386: Remove syscall assembly codes with 6 arguments

This patch removes i386 assembly implementation for mmap, mmap64,
semtimeop now that i386 have 6 argument syscall support from C code
and GCC 5 can inline syscalls with 6 arguments.  We also compile mmap.c,
mmap64.c and semtimedop.c with -fomit-frame-pointer since %ebp may be
used to pass the 6th argument to syscall.

Fo sysdeps/unix/sysv/linux/i386/mmap.c, with -O2 -march=i686
-mtune=generic, GCC 5.2 now generates:

<__mmap>:
   0: sub    $0x10,%esp
   3: mov    0x28(%esp),%eax
   7: mov    %ebx,(%esp)
   a: mov    0x18(%esp),%ecx
   e: mov    %esi,0x4(%esp)
  12: mov    0x14(%esp),%ebx
  16: mov    %edi,0x8(%esp)
  1a: mov    0x1c(%esp),%edx
  1e: test   $0xfff,%eax
  23: mov    0x20(%esp),%esi
  27: mov    %ebp,0xc(%esp)
  2b: mov    0x24(%esp),%edi
  2f: jne    60 <__mmap+0x60>
  31: shr    $0xc,%eax
  34: mov    %eax,%ebp
  36: mov    $0xc0,%eax
  3b: call   *%gs:0x10
  42: cmp    $0xfffff000,%eax
  47: ja     65 <__mmap+0x65>
  49: mov    (%esp),%ebx
  4c: mov    0x4(%esp),%esi
  50: mov    0x8(%esp),%edi
  54: mov    0xc(%esp),%ebp
  58: add    $0x10,%esp
  5b: ret
  5c: lea    0x0(%esi,%eiz,1),%esi
  60: mov    $0xffffffea,%eax
  65: mov    (%esp),%ebx
  68: mov    0x4(%esp),%esi
  6c: mov    0x8(%esp),%edi
  70: mov    0xc(%esp),%ebp
  74: add    $0x10,%esp
  77: jmp    78 <__mmap+0x78>

vs sysdeps/unix/sysv/linux/i386/mmap.S:

<__mmap>:
   0: push   %ebp
   1: push   %ebx
   2: push   %esi
   3: push   %edi
   4: mov    0x14(%esp),%ebx
   8: mov    0x18(%esp),%ecx
   c: mov    0x1c(%esp),%edx
  10: mov    0x20(%esp),%esi
  14: mov    0x24(%esp),%edi
  18: mov    0x28(%esp),%ebp
  1c: test   $0xfff,%ebp
  22: mov    $0xffffffea,%eax
  27: jne    38 <__mmap+0x38>
  29: shr    $0xc,%ebp
  2c: mov    $0xc0,%eax
  31: call   *%gs:0x10
  38: pop    %edi
  39: pop    %esi
  3a: pop    %ebx
  3b: pop    %ebp
  3c: cmp    $0xfffff000,%eax
  41: ja     44 <__mmap+0x44>
  43: ret
  44: call   45 <__mmap+0x45> 45: R_386_PC32 __x86.get_pc_thunk.cx
  49: add    $0x2,%ecx 4b: R_386_GOTPC _GLOBAL_OFFSET_TABLE_
  4f: mov    0x0(%ecx),%ecx 51: R_386_TLS_GOTIE __libc_errno
  55: neg    %eax
  57: mov    %eax,%gs:(%ecx)
  5a: or     $0xffffffff,%eax
  5d: ret

The C version has:

   3: mov    0x28(%esp),%eax
...
  1e: test   $0xfff,%eax
...
  31: sar    $0xc,%eax
  34: mov    %eax,%ebp

is due to missing $ebx register constraint for inline asm.  We have
to use "r" constraint with

register unsigned int _a6 asm ("ebp") = (unsigned int) (arg6);

and compiler chose %eax for offset (arg6) in

  if (offset & (MMAP_PAGE_UNIT - 1))

* sysdeps/unix/sysv/linux/i386/Makefile (CFLAGS-epoll_pwait.c):
Add -fomit-frame-pointer.
(CFLAGS-mmap.c): Likewise.
(CFLAGS-mmap64.c): Likewise.
(CFLAGS-semtimedop.c): Likewise.
* sysdeps/unix/sysv/linux/i386/mmap.c: New file.
* sysdeps/unix/sysv/linux/i386/mmap.S: Remove file.
* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
* sysdeps/unix/sysv/linux/i386/semtimedop.S: Likewise.

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.

Fix powerpc32 lround, lroundf spurious exceptions (bug 19134).

The powerpc32 implementation of lround and lroundf can produce
spurious exceptions from adding 0.5 then converting to integer.  This
includes "inexact" from the conversion to integer (not allowed for
integer arguments to these functions), and, for larger integer
arguments, "inexact", and "overflow" when rounding upward, from the
addition.  In addition, "inexact" is not allowed together with
"invalid" and so inexact addition must be avoided when the integer
will be out of range of 32-bit long, whether or not the argument is an
integer.

This patch fixes these problems.  As in the powerpc64 llround
implementation, a check is added for too-large arguments; in the
powerpc64 case that means arguments at least 2^52 in magnitude (so
that 0.5 cannot be added exactly), while in this case it means
arguments for which the result would overflow "long".  In those cases
a suitable overflowing value is used for the integer conversion
without adding 0.5, while for smaller arguments it's tested whether
the argument is an integer (by adding and subtracting 2^52 to the
absolute value and comparing with the original absolute value) to
avoid adding 0.5 to integers and generating spurious "inexact".

This code is not used when the power5+ sysdeps directories are used,
as there's a separate power5+ version of these functions..

Tested for powerpc.  This gets test-float (for a default powerpc32
hard-float build without any --with-cpu) back to the point where it
should pass once powerpc ulps are regenerated; test-double still needs
another problem with exceptions fixed to get back to that point (and I
haven't looked lately at what default powerpc64 results are like).

[BZ #19134]
* sysdeps/powerpc/powerpc32/fpu/s_lround.S (.LC1): New object.
(.LC2): Likewise.
(.LC3): Likewise.
(__lround): Do not add 0.5 to integer or out-of-range arguments.

[BZ #19129][ARM] Fix _dl_tlsdesc_resolve_hold to save r0

_dl_tlsdesc_resolve_hold calls into a C function that clobbers r0,
but it assumes the original argument is still in r0 after the call.
This can cause crash in case of concurrent TLS access when TLSDESC
is in use (-mtls-dialect=gnu2).

Run into this while fixing BZ 18572.

Both r0 and r1 are saved/restored so the stack remains 8 byte aligned.

[BZ #19129]
* sysdeps/arm/dl-tlsdesc.S (_dl_tlsdesc_resolve_hold): Save and restore
r0 and r1.

manual/argp.texi (Specifying Argp Parsers): Fix typo.

include/stap-probe.h: Fix formatting.

Fix macro indentation.

Fix double-checked locking in _res_hconf_reorder_addrs [BZ #19074]

[BZ #19074]
* resolv/res_hconf.c (_res_hconf_reorder_addrs): Use atomics to
load and store num_ifs.

Avoid PLT when calling __sched_getaffinity_new

This patch adds an internal entry for __sched_getaffinity_new so that
__sched_getaffinity_old calls __sched_getaffinity_new without going
through PLT.

[BZ #18822]
* sysdeps/unix/sysv/linux/sched_getaffinity.c
(__sched_getaffinity_new): Add libc_hidden_proto and
libc_hidden_def.

Support PLT and GOT references in local PIC check

Linker in binutils 2.26 and newer generate GOT references instead
PLT references when -z now is passed to linker.  We need to extend
scripts/localplt.awk to allow PLT or GOT references.

[BZ #19007]
* scripts/localplt.awk: Also allow GOT references.
* sysdeps/unix/sysv/linux/i386/localplt.data: Mark
_Unwind_Find_FDE, calloc, memalign, realloc and __libc_memalign
with "+ REL R_386_GLOB_DAT".
* sysdeps/x86_64/localplt.data: Mark calloc, memalign, realloc
and __libc_memalign with "+ RELA R_X86_64_GLOB_DAT".

Use INTERNAL_SYSCALL and INLINE_SYSCALL_ERROR_RETURN_VALUE

This patch uses INTERNAL_SYSCALL and INLINE_SYSCALL_ERROR_RETURN_VALUE
to avoid reading and writing errno directly so that we don't need to
call __x86.get_pc_thunk.reg to load PC into reg in case there is an
error.

* sysdeps/unix/sysv/linux/i386/brk.c (__brk): Use
INLINE_SYSCALL_ERROR_RETURN_VALUE.
* sysdeps/unix/sysv/linux/i386/fxstatat.c (__fxstatat):
Likewise.
* sysdeps/unix/sysv/linux/i386/setegid.c (setegid): Likewise.
* sysdeps/unix/sysv/linux/i386/seteuid.c (seteuid): Likewise.
* sysdeps/unix/sysv/linux/i386/fxstat.c (__fxstat): Use
INTERNAL_SYSCALLINTERNAL_SYSCALL and
INLINE_SYSCALL_ERROR_RETURN_VALUE.
* sysdeps/unix/sysv/linux/i386/lockf64.c (lockf64): Likewise.
* sysdeps/unix/sysv/linux/i386/lxstat.c (__lxstat): Likewise.
* sysdeps/unix/sysv/linux/i386/sigaction.c (__libc_sigaction):
Likewise.
* sysdeps/unix/sysv/linux/i386/xstat.c (__xstat): Likewise.

Fix powerpc32 llround, llroundf exceptions (bug 19125).

The powerpc32 implementations of llroundf and llround produce spurious
and missing exceptions (some arising from such exceptions from
conversions to long long, some present even when fctidz is used).

This patch fixes those problems in a similar way to the llrint /
llrintf fixes.  The spurious exceptions in the fctidz case for large
arguments arise from a converted value that saturated as LLONG_MAX
being converted back to float or double (the conversion back being
inexact, but "inexact" must not be raised together with "invalid"),
and from the subtraction x - xrf also being inexact for sufficiently
large arguments (whether the saturation was to LLONG_MAX or
LLONG_MIN); those are fixed by returning early if the argument is
large enough that no rounding is needed.

This code is not used for --with-cpu=power4 builds (I suspect the code
used in that case may also produce spurious "inexact" exceptions, but
that's something to investigate later).

Tested for powerpc.

[BZ #19125]
* sysdeps/powerpc/powerpc32/fpu/s_llround.c: Include <limits.h>,
<math_private.h> and <stdint.h>.
(__llround): Avoid conversions to and from long long int, and
subtractions, where those might raise spurious exceptions.
* sysdeps/powerpc/powerpc32/fpu/s_llroundf.c: Include
<math_private.h> and <stdint.h>.
(__llroundf): Avoid conversions to and from long long int, and
subtractions, where those might raise spurious exceptions.

Use INLINE_SYSCALL_ERROR_RETURN_VALUE

This patch replaces

  {
    __set_errno (ERRNO);
    return -1;
  }

with INLINE_SYSCALL_ERROR_RETURN_VALUE (ERRNO).

* sysdeps/unix/sysv/linux/adjtime.c (ADJTIME): Use
INLINE_SYSCALL_ERROR_RETURN_VALUE.
* sysdeps/unix/sysv/linux/dl-openat64.c (openat64): Likewise.
* sysdeps/unix/sysv/linux/eventfd.c (eventfd): Likewise.
* sysdeps/unix/sysv/linux/faccessat.c (faccessat): Likewise.
* sysdeps/unix/sysv/linux/fchmodat.c (fchmodat): Likewise.
* sysdeps/unix/sysv/linux/fcntl.c (do_fcntl): Likewise.
* sysdeps/unix/sysv/linux/futimens.c (futimens): Likewise.
* sysdeps/unix/sysv/linux/futimes.c (__futimes): Likewise.
* sysdeps/unix/sysv/linux/fxstat.c (__fxstat): Likewise.
* sysdeps/unix/sysv/linux/fxstatat.c (__fxstatat): Likewise.
* sysdeps/unix/sysv/linux/fxstatat64.c (__fxstatat64): Likewise.
* sysdeps/unix/sysv/linux/lutimes.c (lutimes): Likewise.
* sysdeps/unix/sysv/linux/lxstat.c (__lxstat): Likewise.
* sysdeps/unix/sysv/linux/lxstat64.c (___lxstat64): Likewise.
* sysdeps/unix/sysv/linux/mmap64.c (__mmap64): Likewise.
* sysdeps/unix/sysv/linux/mq_open.c (__mq_open): Likewise.
* sysdeps/unix/sysv/linux/mq_unlink.c (mq_unlink): Likewise.
* sysdeps/unix/sysv/linux/prlimit.c (prlimit): Likewise.
* sysdeps/unix/sysv/linux/readahead.c (__readahead): Likewise.
* sysdeps/unix/sysv/linux/shmat.c (shmat): Likewise.
* sysdeps/unix/sysv/linux/signalfd.c (signalfd): Likewise.
* sysdeps/unix/sysv/linux/speed.c (cfsetospeed): Likewise.
* sysdeps/unix/sysv/linux/tcsetattr.c (tcsetattr): Likewise.
* sysdeps/unix/sysv/linux/ustat.c (ustat): Likewise.
* sysdeps/unix/sysv/linux/utimensat.c (utimensat): Likewise.
* sysdeps/unix/sysv/linux/xmknod.c (__xmknod): Likewise.
* sysdeps/unix/sysv/linux/xmknodat.c (__xmknodat): Likewise.
* sysdeps/unix/sysv/linux/xstat.c (__xstat): Likewise.
* sysdeps/unix/sysv/linux/xstatconv.c (__xstat_conv): Likewise.
(__xstat64_conv): Likewise.
(__xstat32_conv): Likewise.

Add INLINE_SYSCALL_ERROR_RETURN_VALUE

For ia32 PIC, the first thing of many syscalls does is to call
__x86.get_pc_thunk.reg to load PC into reg in case there is an error,
which is required for setting errno.  In most cases, there are no
errors.  But we still call __x86.get_pc_thunk.reg.  This patch adds
INLINE_SYSCALL_ERROR_RETURN_VALUE so that i386 can optimize setting
errno by branching to the internal __syscall_error without PLT.

With i386 INLINE_SYSCALL_ERROR_RETURN_VALUE and i386 syscall inlining
optimization for GCC 5, for sysdeps/unix/sysv/linux/fchmodat.c with
-O2 -march=i686 -mtune=generic, GCC 5.2 now generates:

<fchmodat>:
   0: push   %ebx
   1: mov    0x14(%esp),%eax
   5: mov    0x8(%esp),%ebx
   9: mov    0xc(%esp),%ecx
   d: mov    0x10(%esp),%edx
  11: test   $0xfffffeff,%eax
  16: jne    38 <fchmodat+0x38>
  18: test   $0x1,%ah
  1b: jne    48 <fchmodat+0x48>
  1d: mov    $0x132,%eax
  22: call   *%gs:0x10
  29: cmp    $0xfffff000,%eax
  2e: ja     58 <fchmodat+0x58>
  30: pop    %ebx
  31: ret
  32: lea    0x0(%esi),%esi
  38: pop    %ebx
  39: mov    $0xffffffea,%eax
  3e: jmp    3f <fchmodat+0x3f> 3f: R_386_PC32 __syscall_error
  43: nop
  44: lea    0x0(%esi,%eiz,1),%esi
  48: pop    %ebx
  49: mov    $0xffffffa1,%eax
  4e: jmp    4f <fchmodat+0x4f> 4f: R_386_PC32 __syscall_error
  53: nop
  54: lea    0x0(%esi,%eiz,1),%esi
  58: pop    %ebx
  59: jmp    5a <fchmodat+0x5a> 5a: R_386_PC32 __syscall_error

instead of

<fchmodat>:
   0: sub    $0x8,%esp
   3: mov    0x18(%esp),%eax
   7: mov    %ebx,(%esp)
   a: call   b <fchmodat+0xb> b: R_386_PC32 __x86.get_pc_thunk.bx
   f: add    $0x2,%ebx 11: R_386_GOTPC _GLOBAL_OFFSET_TABLE_
  15: mov    %edi,0x4(%esp)
  19: test   $0xfffffeff,%eax
  1e: jne    70 <fchmodat+0x70>
  20: test   $0x1,%ah
  23: jne    88 <fchmodat+0x88>
  25: mov    0x14(%esp),%edx
  29: mov    0x10(%esp),%ecx
  2d: mov    0xc(%esp),%edi
  31: xchg   %ebx,%edi
  33: mov    $0x132,%eax
  38: call   *%gs:0x10
  3f: xchg   %edi,%ebx
  41: cmp    $0xfffff000,%eax
  46: ja     58 <fchmodat+0x58>
  48: mov    (%esp),%ebx
  4b: mov    0x4(%esp),%edi
  4f: add    $0x8,%esp
  52: ret
  53: nop
  54: lea    0x0(%esi,%eiz,1),%esi
  58: mov    0x0(%ebx),%edx 5a: R_386_TLS_GOTIE __libc_errno
  5e: neg    %eax
  60: mov    %eax,%gs:(%edx)
  63: mov    $0xffffffff,%eax
  68: jmp    48 <fchmodat+0x48>
  6a: lea    0x0(%esi),%esi
  70: mov    0x0(%ebx),%eax 72: R_386_TLS_GOTIE __libc_errno
  76: movl   $0x16,%gs:(%eax)
  7d: mov    $0xffffffff,%eax
  82: jmp    48 <fchmodat+0x48>
  84: lea    0x0(%esi,%eiz,1),%esi
  88: mov    0x0(%ebx),%eax 8a: R_386_TLS_GOTIE __libc_errno
  8e: movl   $0x5f,%gs:(%eax)
  95: mov    $0xffffffff,%eax
  9a: jmp    48 <fchmodat+0x48>

* sysdeps/unix/sysv/linux/sysdep.h: New file.
* sysdeps/unix/sysv/linux/i386/sysdep.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/sysdep.h: Include
<sysdeps/unix/sysv/linux/sysdep.h>.
* sysdeps/unix/sysv/linux/arm/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/generic/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/m68k/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/microblaze/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) == csu]
(sysdep-dl-routines): Add sysdep.
[$(subdir) == nptl] (libpthread-routines): Likewise.
[$(subdir) == rt] (librt-routines): Likewise.
* sysdeps/unix/sysv/linux/i386/clone.S (__clone): Don't check
PIC when branching to SYSCALL_ERROR_LABEL.
* sysdeps/unix/sysv/linux/i386/sysdep.S: Removed.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Include
<sysdeps/unix/sysv/linux/sysdep.h>.
(SYSCALL_ERROR_LABEL): Changed to __syscall_error.
(SYSCALL_ERROR_ERRNO): Removed.
(SYSCALL_ERROR_HANDLER): Changed to empty.
(SYSCALL_ERROR_HANDLER_TLS_STORE): Likewise.
(__syscall_error): New prototype.
[IS_IN (libc)] (INLINE_SYSCALL): New macro.
(INLINE_SYSCALL_ERROR_RETURN_VALUE): Likewise.

Support x86-64 assmebler without AVX512

When x86-64 assmebler doesn't support AVX512, we should make
_dl_runtime_resolve_avx512/_dl_runtime_profile_avx512 as aliases of
_dl_runtime_resolve_avx/_dl_runtime_profile_avx.  Tested on x86-64
using GCC 5.2 with binutils 20151008 and GCC 4.8 with binutils 20130219.
There are no differences in ld.so with binutils 20151008.  There are no
unexpected failures with binutils 20130219 and 20151008.

[BZ #19124]
* sysdeps/x86_64/dl-trampoline.S [!HAVE_AVX512_ASM_SUPPORT]
(_dl_runtime_resolve_avx512): Make it a hidden alias of
_dl_runtime_resolve_avx.
(_dl_runtime_profile_avx512): Make it a hidden alias of
_dl_runtime_profile_avx.

Move powerpc llround implementations to powerpc32 directory.

sysdeps/powerpc/fpu/ has versions of llround and llroundf that are
actually used only for powerpc32 because
sysdeps/powerpc/powerpc64/fpu/ has its own versions of those
functions.  This patch moves them into sysdeps/powerpc/powerpc32/fpu
to reflect where they are actually used (in preparation for fixing
other problems with those functions).

Tested for powerpc that installed stripped shared libraries are
unchanged by this patch.

* sysdeps/powerpc/fpu/s_llround.c: Move to ....
* sysdeps/powerpc/powerpc32/fpu/s_llround.c: ...here.
* sysdeps/powerpc/fpu/s_llroundf.c: Move to ....
* sysdeps/powerpc/powerpc32/fpu/s_llroundf.c: ...here.

Fix powerpc32 llrint, llrintf bad exceptions (bug 16422).

The versions of llrint and llrintf for older powerpc32 processors
convert the results of __rint / __rintf to long long int, resulting in
spurious exceptions from such casts in certain cases.  This patch
makes glibc work around the problems with the libgcc conversions when
the compiler used to build glibc doesn't use the fctidz instruction
for them.

Tested for powerpc.

[BZ #16422]
* sysdeps/powerpc/powerpc32/fpu/configure.ac (libc_cv_ppc_fctidz):
New configure test.
* sysdeps/powerpc/powerpc32/fpu/configure: Regenerated.
* config.h.in [_LIBC] (HAVE_PPC_FCTIDZ): New macro.
* sysdeps/powerpc/powerpc32/fpu/s_llrint.c: Include <limits.h>,
<math_private.h> and <stdint.h>.
(__llrint): Avoid conversions to long long int where those might
raise spurious exceptions.
* sysdeps/powerpc/powerpc32/fpu/s_llrintf.c: Include
<math_private.h> and <stdint.h>.
(__llrintf): Avoid conversions to long long int where those might
raise spurious exceptions.

Add bug reference