cc5d5852c65e ("y2038: Convert aio_suspend to support 64 bit time")
switched from __clock_gettime (CLOCK_REALTIME, &now); to __clock_gettime64
(CLOCK_MONOTONIC, &ts);, but pthread_cond_timedwait is based on the
absolute realtime clock, so migrate to using pthread_cond_clockwait to
select CLOCK_MONOTONIC. Also fix AIO_MISC_WAIT into passing
CLOCK_MONOTONIC to __futex_abstimed_wait64.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

Use empty initializer to silence GCC 4.9 or older:

getaddrinfo.c: In function ‘gaih_inet’:
getaddrinfo.c:1135:24: error: missing braces around initializer [-Werror=missing-braces]
       / sizeof (struct gaih_typeproto)] = {0};
                        ^

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>

This reverts commit 8aa2a9e0339215012354f3c4a262edda838134e8.

as not all targets need braces.

Add braces to silence GCC 4.9 or older:

getaddrinfo.c: In function ‘gaih_inet’:
getaddrinfo.c:1135:24: error: missing braces around initializer [-Werror=missing-braces]
       / sizeof (struct gaih_typeproto)] = {0};
                        ^

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>

Forgot to change the first-line description.

Test that clock_nanosleep rejects out of range time values.

Test that clock_nanosleep actually sleeps for at least the
requested time relative to the requested clock.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

The mqueue.h fortify wrapper for clang added by c23107effbfe5300
is not fully correct, where correct 4 argument usage are not
being correctly handled.  For instance, while building socat 1.8
with a yocto clang based system shows:

  ./socat-1.8.0.0/xio-posixmq.c:119:8: error: 'mq_open' is unavailable: mq_open can be called either with 2 or 4 arguments
    119 |         mqd = mq_open(name, oflag, opt_mode, NULL);
        |               ^
  [...] /usr/include/bits/mqueue2.h:66:8: note: 'mq_open' has been explicitly marked unavailable here
     66 | __NTH (mq_open (const char *__name, int __oflag, mode_t mode,
        |        ^
  1 error generated.

The correct way to define the wrapper is to set invalid usage
with __fortify_clang_unavailable (for the case with 5 or more
arguments), followed by the expected ones.  This fix make mq_open
similar to current open wrappers.

[1] http://www.dest-unreach.org/socat/

Reported-by: Khem Raj <raj.khem@gmail.com>
Acked-by: Khem Raj <raj.khem@gmail.com>

It was raised on libc-help [1] that some Linux kernel interfaces expect
the libc to define __USE_TIME_BITS64 to indicate the time_t size for the
kABI.  Different than defined by the initial y2038 design document [2],
the __USE_TIME_BITS64 is only defined for ABIs that support more than
one time_t size (by defining the _TIME_BITS for each module).

The 64 bit time_t redirects are now enabled using a different internal
define (__USE_TIME64_REDIRECTS). There is no expected change in semantic
or code generation.

Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and
arm-linux-gnueabi

[1] https://sourceware.org/pipermail/libc-help/2024-January/006557.html
[2] https://sourceware.org/glibc/wiki/Y2038ProofnessDesign

Reviewed-by: DJ Delorie <dj@redhat.com>

It improve mq_open.  The compile and runtime checks have similar
coverage as with GCC.

Checked on aarch64, armhf, x86_64, and i686.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>