Do not test sign of zero result from infinite argument to Bessel functions.

When Bessel functions return a zero result from an infinite argument,
the function oscillates as it approaches 0, so the sign of that zero
result should be indeterminate.  This patch weakens the expectations
accordingly not to check the sign of such results (the tests were
causing spurious failures for j1 (-Inf) for ldbl-128).

Tested for x86_64 and x86.

* math/libm-test.inc (j0_test_data): Do not test sign of zero
result from infinite argument.
(j1_test_data): Likewise.
(jn_test_data): Likewise.
(y0_test_data): Likewise.
(y1_test_data): Likewise.
(yn_test_data): Likewise.

Make drem an alias of remainder (bug 16171).

The libm drem functions just call the corresponding __remainder
functions.  This patch removes the unnecessary wrappers by making them
into weak aliases at the ELF level.

Tested for x86_64, x86, mips64 and powerpc.

[BZ #16171]
* math/w_remainder.c (drem): Define as weak alias of __remainder.
[NO_LONG_DOUBLE] (dreml): Define as weak alias of __remainder.
* math/w_remainderf.c (dremf): Define as weak alias of
__remainderf.
* math/w_remainderl.c (dreml): Define as weak alias of
__remainderl.
* sysdeps/ia64/fpu/e_remainder.S (drem): Define as weak alias of
__remainder.
* sysdeps/ia64/fpu/e_remainderf.S (dremf): Define as weak alias of
__remainderf.
* sysdeps/ia64/fpu/e_remainderl.S (dreml): Define as weak alias of
__remainderl.
* sysdeps/ieee754/ldbl-opt/nldbl-remainder.c (dreml): Define as
weak alias of remainderl.
* sysdeps/ieee754/ldbl-opt/w_remainder.c
[LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (__drem): Define as strong
alias of __remainder.
[LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (dreml): Use compat_symbol.
* sysdeps/ieee754/ldbl-opt/w_remainderl.c (__dreml): Define as
strong alias of __remainderl.
(dreml): Use long_double_symbol.
* math/Makefile (libm-calls): Remove w_drem.
* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Remove drem.
(CFLAGS-nldbl-drem.c): Remove variable.
(CFLAGS-nldbl-remainder.c): Add -fno-builtin-dreml.
* math/w_drem.c: Remove file.
* math/w_dremf.c: Likewise.
* math/w_dreml.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-drem.c: Likewise.
* sysdeps/ieee754/ldbl-opt/w_drem.c: Likewise.
* sysdeps/ieee754/ldbl-opt/w_dreml.c: Likewise.

Remove cpuid.h configure tests.

There are configure tests for the cpuid.h header for x86 / x86_64.
GCC 4.3 and later install this header, so those tests are obsolete.
This patch removes them.

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

* sysdeps/i386/configure.ac (cpuid.h): Do not test for header.
* sysdeps/i386/configure: Regenerated.
* sysdeps/x86_64/configure.ac (cpuid.h): Do not test for header.
* sysdeps/x86_64/configure: Regenerated.

Remove configure tests for visibility support.

There are various configure tests for visibility support in the
compiler and assember.

GCC support for visibility attributes was added in GCC 3.3.  I don't
know what specific fix was intended by the test "for broken
__attribute__((visibility())", but it was added by
<https://sourceware.org/ml/libc-hacker/2002-08/msg00030.html>, and GCC
3.3 appears not to have that breakage, so I suspect it was only ever
in development versions before 3.3 was released.  The assembler
support was added in binutils 2.10.

This patch removes the tests in question as obsolete.  Two tests that
were formerly conditional on "if test $libc_cv_visibility_attribute =
yes", including the one for linker support for protected data, are now
unconditional.

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

* configure.ac (libc_cv_asm_protected_directive): Remove configure
test.
(libc_cv_visibility_attribute): Likewise.
(libc_cv_protected_data): Test unconditionally.
(libc_cv_broken_visibility_attribute): Remove configure test.
(libc_cv_have_sdata_section): Test unconditionally.
* configure: Regenerated.

Use max_align_t from <stddef.h>.

Now that we build with -std=gnu11 and can rely on a compiler providing
max_align_t in <stddef.h>, we no longer need our own version
libc_max_align_t.  This patch removes it and replaces the single user
with a use of max_align_t.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch for x86_64; for x86, I see
some code reordering of no significance).

* include/libc-internal.h (libc_max_align_t): Remove typedef.
* include/scratch_buffer.h: Include <stddef.h> instead of
<libc-internal.h>.
(struct scratch_buffer): Use max_align_t instead of
libc_max_align_t.

_dl_fini: Rewrite to use VLA instead of extend_alloca

In this case, extend_alloca is used to work around the lack of
deallocation on scope exit.  A VLA is automatically deallocated in this
way, so it is the more fitting approach.

To implement this, it is necessary to eliminate the goto.  In addition,
this change eliminates the trivially-true assert; the assert is always
skipped if nloaded > 0.

* elf/dl-fini.c (_dl_fini): Rewrite to use variable-length array
instead of extend_alloca.  Change control flow to avoid a goto.
Remove assert which is trivially always true.

Handle more state in i386/x86_64 fesetenv (bug 16068).

fenv_t should include architecture-specific floating-point modes and
status flags.  i386 and x86_64 fesetenv limit which bits they use from
the x87 status and control words, when using saved state, and limit
which parts of the state they set to fixed values, when using
FE_DFL_ENV / FE_NOMASK_ENV.  The following should be included but are
excluded in at least some cases: status and masking for the "denormal
operand" exception (which isn't part of FE_ALL_EXCEPT); precision
control (explicitly mentioned in Annex F as something that counts as
part of the floating-point environment); MXCSR FZ and DAZ bits (for
FE_DFL_ENV and FE_NOMASK_ENV).  This patch arranges for this extra
state to be handled by fesetenv (and thereby by feupdateenv, which
calls fesetenv).

(Note that glibc functions using floating point are not generally
expected to work correctly with non-default values of this state,
especially precision control, but it is still logically part of the
floating-point environment and should be handled as such by fesetenv.
Changes to the state relating to subnormals ought generally to work
with libm functions when the arguments aren't subnormal and neither
are the expected results; that's a consequence of functions avoiding
spurious internal underflows.)

A question arising from this is whether FE_NOMASK_ENV should or should
not mask the "denormal operand" exception.  I decided it should mask
that exception.  This is the status quo - previously that exception
could only be unmasked by direct manipulation of control registers
(possibly via <fpu_control.h>).  In addition, it means that use of
FE_NOMASK_ENV leaves a floating-point environment the same as could be
obtained by fesetenv (FE_DFL_ENV); feenableexcept (FE_ALL_EXCEPT);,
rather than an environment in which an exception is unmasked that
could only be masked again by using fesetenv with FE_DFL_ENV (or a
previously saved environment) - this exception not being usable with
other <fenv.h> functions because it's outside FE_ALL_EXCEPT.

Tested for x86_64 and x86.

[BZ #16068]
* sysdeps/i386/fpu/fesetenv.c: Include <fpu_control.h>.
(FE_ALL_EXCEPT_X86): New macro.
(__fesetenv): Use FE_ALL_EXCEPT_X86 in most places instead of
FE_ALL_EXCEPT.  Ensure precision control is included in
floating-point state.  Ensure that FE_DFL_ENV and FE_NOMASK_ENV
handle "denormal operand exception" and clear FZ and DAZ bits.
* sysdeps/x86_64/fpu/fesetenv.c: Include <fpu_control.h>.
(FE_ALL_EXCEPT_X86): New macro.
(__fesetenv): Use FE_ALL_EXCEPT_X86 in most places instead of
FE_ALL_EXCEPT.  Ensure precision control is included in
floating-point state.  Ensure that FE_DFL_ENV and FE_NOMASK_ENV
handle "denormal operand exception" and clear FZ and DAZ bits.
* sysdeps/x86/fpu/test-fenv-sse-2.c: New file.
* sysdeps/x86/fpu/test-fenv-x87.c: Likewise.
* sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add
test-fenv-x87 and test-fenv-sse-2.
[$(subdir) = math] (CFLAGS-test-fenv-sse-2.c): New variable.

Use C11 CMPLX* macros in libm tests.

libm-test.inc has a macro BUILD_COMPLEX to construct a complex number
with given real and imaginary parts while allowing properly for signed
zeroes, infinities and NaNs (which don't work properly with a simple
real + I * imag, in the absence of compiler support for imaginary
types), using assignment to __real__ and __imag__ parts of the number.
C11 defines CMPLX* macros for this purpose, which GCC 4.7 and above
provide suitable built-in functions for.  This patch redefines
BUILD_COMPLEX in terms of the standard macros.

Tested for x86_64 and x86.

* math/libm-test.inc (BUILD_COMPLEX): Remove macro.
* math/test-double.h (BUILD_COMPLEX): New macro.
* math/test-float.h (BUILD_COMPLEX): Likewise.
* math/test-ldouble.h (BUILD_COMPLEX): Likewise.

Use C11 *_TRUE_MIN macros where applicable.

C11 defines standard <float.h> macros *_TRUE_MIN for the least
positive subnormal value of a type.  Now that we build with
-std=gnu11, we can use these macros in glibc.  This patch replaces
previous uses of the GCC predefines __*_DENORM_MIN__ (used in
<float.h> to define *_TRUE_MIN), as well as *_DENORM_MIN references in
comments.

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

* math/libm-test.inc (min_subnorm_value): Use LDBL_TRUE_MIN,
DBL_TRUE_MIN and FLT_TRUE_MIN instead of __LDBL_DENORM_MIN__,
__DBL_DENORM_MIN__ and __FLT_DENORM_MIN__.
* sysdeps/ieee754/dbl-64/s_fma.c (__fma): Refer to DBL_TRUE_MIN
instead of DBL_DENORM_MIN in comment.
* sysdeps/ieee754/ldbl-128/s_fmal.c (__fmal): Refer to
LDBL_TRUE_MIN instead of LDBL_DENORM_MIN in comment.
* sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c: Include <float.h>.
(__nextafterl): Use LDBL_TRUE_MIN instead of __LDBL_DENORM_MIN__.
* sysdeps/ieee754/ldbl-96/s_fmal.c (__fmal): Refer to
LDBL_TRUE_MIN instead of LDBL_DENORM_MIN in comment.

malloc: Prevent arena free_list from turning cyclic [BZ #19048]

[BZ# 19048]
* malloc/malloc.c (struct malloc_state): Update comment.  Add
attached_threads member.
(main_arena): Initialize attached_threads.
* malloc/arena.c (list_lock): Update comment.
(ptmalloc_lock_all, ptmalloc_unlock_all): Likewise.
(ptmalloc_unlock_all2): Reinitialize arena reference counts.
(deattach_arena): New function.
(_int_new_arena): Initialize arena reference count and deattach
replaced arena.
(get_free_list, reused_arena): Update reference count and deattach
replaced arena.
(arena_thread_freeres): Update arena reference count and only put
unreferenced arenas on the free list.

Fix i386/x86_64 fesetenv SSE exception clearing (bug 19181).

The i386 and x86_64 versions of fesetenv, when called with FE_DFL_ENV
or FE_NOMASK_ENV as argument, do not clear SSE exceptions raised in
MXCSR.  These arguments should, like other fenv_t values, represent
the whole of the floating-point state, so such exceptions should be
cleared; this patch adds the required clearing.  (Discovered while
working on bug 16068.)

Tested for x86_64 and x86.

[BZ #19181]
* sysdeps/i386/fpu/fesetenv.c (__fesetenv): Clear already-raised
SSE exceptions when argument is FE_DFL_ENV or FE_NOMASK_ENV.
* sysdeps/x86_64/fpu/fesetenv.c (__fesetenv): Likewise.
* math/test-fenv-clear-main.c: New file.
* math/test-fenv-clear.c: Likewise.
* math/Makefile (tests): Add test-fenv-clear.
* sysdeps/x86/fpu/test-fenv-clear-sse.c: New file.
* sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add
test-fenv-clear-sse.
[$(subdir) = math] (CFLAGS-test-fenv-clear-sse.c): New variable.

Use C11 *_DECIMAL_DIG macros in libm-test.inc.

Now that we build with -std=gnu11, we can use C11 <float.h> macros
such as FLT_DECIMAL_DIG instead of the GCC predefines such as
__FLT_DECIMAL_DIG__ that are used internally in <float.h>.  This patch
makes libm-test.inc do so.

Tested for x86_64 and x86.

* math/libm-test.inc (TYPE_DECIMAL_DIG): Use LDBL_DECIMAL_DIG,
DBL_DECIMAL_DIG and FLT_DECIMAL_DIG instead of __DECIMAL_DIG__,
__DBL_DECIMAL_DIG__ and __FLT_DECIMAL_DIG__.

powerpc: Provide __tls_get_addr () in static libc

Since '--no-tls-optimize' is available for Power in ld, we need to provide
__tls_get_addr () in static libc in order to avoid undefined references to this
symbol when that flag is used.

* sysdeps/powerpc/libc-tls.c: New file. Provides __tls_get_addr () in
static libc.

Remove -mavx2 configure tests.

There are configure tests for the -mavx2 compiler option.  AVX2
support was added in GCC 4.7, so these tests are now obsolete; this
patch removes them.

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

* sysdeps/i386/configure.ac (libc_cv_cc_avx2): Remove configure
test.
* sysdeps/i386/configure: Regenerated.
* sysdeps/x86_64/configure.ac (libc_cv_cc_avx2): Remove configure
test.
* sysdeps/x86_64/configure: Regenerated.
* config.h.in (HAVE_AVX2_SUPPORT): Remove #undef.
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
memset-avx2 unconditionally instead of conditionally on
[$(config-cflags-avx2) = yes].
* sysdeps/x86_64/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list) [HAVE_AVX2_SUPPORT]: Make code
unconditional.
* sysdeps/x86_64/multiarch/memset.S [HAVE_AVX2_SUPPORT]: Likewise.
* sysdeps/x86_64/multiarch/memset_chk.S
[IS_IN (libc) && SHARED && HAVE_AVX2_SUPPORT]: Change conditional
to [IS_IN (libc) && SHARED].

Remove configure test for ARM TLS descriptors support.

GCC 4.7 added support for ARM TLS descriptors.  The binutils support
is present in binutils 2.22.  Thus, this patch removes the associated
configure test as obsolete (leaving Makefile conditionals, as NaCl
sets have-arm-tls-desc = no in its sysdeps fragment).

Tested for ARM that installed shared libraries are unchanged by the
patch.

* sysdeps/arm/configure.ac (libc_cv_arm_tls_desc): Remove
configure test.
* sysdeps/arm/configure: Regenerated.
* sysdeps/arm/Makefile [!have-arm-tls-desc] (have-arm-tls-desc):
Define variable if not already defined.

Remove MIPS16 atomics using __sync_* (bug 17404).

MIPS16 atomics used __sync_* with GCC before 4.7, which as noted in
bug 17404 is missing the required barrier semantics for
atomic_exchange_rel.  This patch removes the code in question as dead
now GCC before 4.7 is no longer supported for building glibc.

Sanity tested with builds for MIPS.

[BZ #17404]
* sysdeps/mips/atomic-machine.h
[__GNUC_PREREQ (4, 8) || (__mips16 && __GNUC_PREREQ (4, 7))]:
Change conditional to [__GNUC_PREREQ (4, 8) || __mips16].
[__mips16 && !__GNUC_PREREQ (4, 7)]: Remove conditional code.

Remove GCC version conditionals on -Wmaybe-uninitialized pragmas.

One common case of __GNUC_PREREQ (4, 7) conditionals is use of
diagnostic control pragmas for -Wmaybe-uninitialized, an option
introduced in GCC 4.7 where older GCC needed -Wuninitialized to be
controlled instead if the warning appeared with older GCC.  This patch
removes such conditionals.

(There remain several older uses of -Wno-uninitialized in makefiles
that still need to be converted to diagnostic control pragmas if the
issue is still present with current sources and supported GCC
versions, and it's likely that in most cases those pragmas also will
end up controlling -Wmaybe-uninitialized.)

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch, except for libresolv
since res_send.c contains assertions whose line numbers are changed by
the patch).

* resolv/res_send.c (send_vc) [__GNUC_PREREQ (4, 7)]: Make code
unconditional.
* soft-fp/fmadf4.c [__GNUC_PREREQ (4, 7)]: Likewise.
[!__GNUC_PREREQ (4, 7)]: Remove conditional code.
* soft-fp/fmasf4.c [__GNUC_PREREQ (4, 7)]: Make code
unconditional.
[!__GNUC_PREREQ (4, 7)]: Remove conditional code.
* soft-fp/fmatf4.c [__GNUC_PREREQ (4, 7)]: Make code
unconditional.
[!__GNUC_PREREQ (4, 7)]: Remove conditional code.
* stdlib/setenv.c
[((__GNUC__ << 16) + __GNUC_MINOR__) >= ((4 << 16) + 7)]: Make
code unconditional.
[!(((__GNUC__ << 16) + __GNUC_MINOR__) >= ((4 << 16) + 7))]:
Remove conditional code.
* sysdeps/ieee754/dbl-64/e_lgamma_r.c
(__ieee754_lgamma_r) [__GNUC_PREREQ (4, 7)]: Make code
unconditional.
(__ieee754_lgamma_r) [!__GNUC_PREREQ (4, 7)]: Remove conditional
code.
* sysdeps/ieee754/flt-32/e_lgammaf_r.c
(__ieee754_lgammaf_r) [__GNUC_PREREQ (4, 7)]: Make code
unconditional.
(__ieee754_lgammaf_r) [!__GNUC_PREREQ (4, 7)]: Remove conditional
code.
* sysdeps/ieee754/ldbl-128/k_tanl.c
(__kernel_tanl) [__GNUC_PREREQ (4, 7)]: Make code unconditional.
(__kernel_tanl) [!__GNUC_PREREQ (4, 7)]: Remove conditional code.
* sysdeps/ieee754/ldbl-128ibm/k_tanl.c
(__kernel_tanl) [__GNUC_PREREQ (4, 7)]: Make code unconditional.
(__kernel_tanl) [!__GNUC_PREREQ (4, 7)]: Remove conditional code.
* sysdeps/ieee754/ldbl-96/e_lgammal_r.c
(__ieee754_lgammal_r) [__GNUC_PREREQ (4, 7)]: Make code
unconditional.
(__ieee754_lgammal_r) [!__GNUC_PREREQ (4, 7)]: Remove conditional
code.
* sysdeps/ieee754/ldbl-96/k_tanl.c
(__kernel_tanl) [__GNUC_PREREQ (4, 7)]: Make code unconditional.
(__kernel_tanl) [!__GNUC_PREREQ (4, 7)]: Remove conditional code.

Add -std=gnu11 and -std=c11 NPTL initializers tests.

NPTL has tests that initializers work with various -std= options.  Now
that we can rely on -std=gnu11 and -std=c11 being available, this
patch adds versions of those tests for those options.

Tested for x86_64 and x86 (testsuite).

* nptl/tst-initializers1-c11.c: New file.
* nptl/tst-initializers1-gnu11.c: Likewise.
* nptl/Makefile (tests): Add these new tests.
(CFLAGS-tst-initializers1-c11.c): New variable.
(CFLAGS-tst-initializers1-gnu11.c): Likewise.

Use -std=gnu11 instead of -std=gnu99.

Now that GCC 4.7 or later is required to build glibc, this patch moves
the build from using -std=gnu99 to -std=gnu11 (option added in 4.7).
This allows use of C11 features from GCC's headers, such as new
float.h macros and max_align_t.

Tested for x86_64 and x86 (testsuite; installed stripped shared
libraries are unchanged by the patch on x86_64, while I see some
slight code reordering of no significance on x86).

* Makeconfig (CFLAGS): Use -std=gnu11 instead of -std=gnu99.
* Makefile ($(objpfx)c++-types-check.out): Filter out -std=gnu11
instead of -std=gnu99.
* configure.ac (systemtap): Test with -std=gnu11 instead of
-std=gnu99.
* configure: Regenerated.
* math/gen-auto-libm-tests.c: Use -std=gnu11 instead of -std=gnu99
in compilation command in comment.

Remove sysdeps/nptl/configure.ac.

sysdeps/nptl/configure.ac tests for forced unwind support and the C
cleanup attribute, giving errors if either is unsupported.  It does
nothing beyond running those two tests.

Both the attribute, and _Unwind_GetCFA which is used in the forced
unwind test, were added in GCC 3.3.  Thus these tests are long
obsolete, and this patch removes the configure fragment running them,
along with associated conditionals.

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

* sysdeps/nptl/configure.ac: Remove file.
* sysdeps/nptl/configure: Remove generated file.
* configure.ac (libc_cv_forced_unwind): Do not substitute.
* configure: Regenerated.
* config.h.in (HAVE_FORCED_UNWIND): Remove #undef.
* config.make.in (have-forced-unwind): Remove variable.
* nptl/Makefile [$(have-forced-unwind) = yes]: Make code
unconditional.
* nptl/descr.h [HAVE_FORCED_UNWIND]: Likewise.
* nptl/unwind.c [HAVE_FORCED_UNWIND]: Likewise.
(__pthread_unwind) [!HAVE_FORCED_UNWIND]: Remove conditional code.
* nptl/version.c [HAVE_FORCED_UNWIND]: Make code unconditional.
* sysdeps/nptl/Makefile [$(have-forced-unwind) = yes]: Make code
unconditional.

powerpc: Fix usage of elision transient failure adapt param

The skip_lock_out_of_tbegin_retries adaptive parameter was
not being used correctly, nor as described.  This prevents
a fallback for all users of the lock if a transient abort
occurs within the accepted number of retries.

[BZ #19174]
* sysdeps/powerpc/nptl/elide.h (__elide_lock): Fix usage of
.skip_lock_out_of_tbegin_retries.
* sysdeps/unix/sysv/linux/powerpc/elision-lock.c
(__lll_lock_elision): Likewise, and respect a value of
try_tbegin <= 0.

Add AT_PLATFORM to _dl_aux_init ()

Added AT_PLATFORM to _dl_aux_init () function to keep it in sync with
_dl_sysdep_start ().

* elf/dl-support.c (_dl_aux_init): Added AT_PLATFORM to the case
statement.

Remove pre-GCC-4.7 conform/ test XFAILs.

Now that GCC 4.7 or later is required to build glibc, this patch
removes three conform/ test XFAILs that related to missing C11 support
in GCC 4.6.

Tested for x86_64 and x86 (conform/ tests).

* conform/Makefile (test-xfail-ISO11/complex.h/conform): Remove
variable.
(test-xfail-ISO11/stdalign.h/conform): Likewise.
(test-xfail-ISO11/stdnoreturn.h/conform): Likewise.

Use -std=c11 for C11 conform/ tests.

Now that GCC 4.7 or later is required to build glibc, this patch makes
the conformance tests use -std=c11 for C11 tests instead of -std=c1x
-D_ISOC11_SOURCE.

Tested for x86_64 and x86 (conform/ tests).

* conform/GlibcConform.pm ($CFLAGS{"ISO11"}): Use -std=c11 instead
of -std=c1x -D_ISOC11_SOURCE.

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.