Auto-sync with upstream branch master
    
    Temporary patches to work around gcc 12 vs glibc warning
    and ppc64le long double conflicts.
    
    Upstream commit: 5b8e7980c5dabd9aaefeba4f0208baa8cf7653ee
    
    - Linux: Detect user namespace support in io/tst-getcwd-smallbuff
    - Fix handling of unterminated bracket expressions in fnmatch (bug 28792)
    - realpath: Avoid overwriting preexisting error (CVE-2021-3998)
    - elf: Add a test for PT_LOAD segments with invalid p_align [BZ #28688]
    - elf: Add a test for PT_LOAD segments with p_align == 1 [BZ #28688]
    - elf: Add a test for PT_LOAD segments with mixed p_align [BZ #28676]
    - Add and use link-test-modules-rpath-link [BZ #28455]
    - tst-realpath-toolong: Fix hurd build
    - getcwd: Set errno to ERANGE for size == 1 (CVE-2021-3999)
    - Add valgrind smoke test
    - htl: Fix cleaning the reply port
    - elf: Properly align all PT_LOAD segments [BZ #28676]
    - realpath: Set errno to ENAMETOOLONG for result larger than PATH_MAX [BZ #28770]
    - support: Add helpers to create paths longer than PATH_MAX
    - nptl: Effectively skip CAS in spinlock loop
    - mips: Move DT_MIPS into <ldsodefs.h>
    - x86_64: Document libmvec vector functions accuracy [BZ #28766]
    - x86: Black list more Intel CPUs for TSX [BZ #27398]
    - elf: Fix tst-align3
    - elf: Move _dl_setup_hash to its own file
    - htl: Fix build error in annexc
    - elf: Reinstate tst-audit17
    - x86: use default cache size if it cannot be determined [BZ #28784]
    - rt/tst-mqueue*: Return UNSUPPORTED when mq_open fails with ENOSYS
    - Linux: Add epoll_pwait2 (BZ #27359)
    - Properly handle --disable-default-pie [BZ #28780]
    - elf: Fix 64 time_t support for installed statically binaries
    - Revert "elf: Fix 64 time_t support for installed statically binaries"
    - CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug 28768)
    - sunrpc: Test case for clnt_create "unix" buffer overflow (bug 22542)
    - CVE-2022-23219: Buffer overflow in sunrpc clnt_create for "unix" (bug 22542)
    - socket: Add the __sockaddr_un_set function
    - elf/tst-dl_find_object: Disable subtests for non-contiguous maps (bug 28732)
    - elf: Set l_contiguous to 1 for the main map in more cases
    - elf: Introduce rtld_setup_main_map
    - hurd: Make RPC input array parameters const
    - hurd: optimize exec cleanup
    - hurd: Add __rtld_execve
    - hurd: Fix exec() leak on proc_task2proc failure
    - htl: Hide __pthread_attr's __schedparam type [BZ #23088]
    - htl: Clear kernel_thread field before releasing the thread structure
    - hurd: drop SA_SIGINFO availability xfail
    - hurd: Fix timer/clock_getres crash on NULL res parameter
    - hurd: Fix pthread_kill on exiting/ted thread
    - [hurd] Drop spurious #ifdef SHARED
    - [hurd] Call _dl_sort_maps_init in _dl_sysdep_start
    - elf tst-dl_find_object: Fix typo
    - s390x: Use <gcc-macros.h> in early HWCAP check
    - x86: Add x86-64-vN check to early startup
    - powerpc64le: Use <gcc-macros.h> in early HWCAP check
    - Add --with-rtld-early-cflags configure option
    - elf: Split dl-printf.c from dl-misc.c
    - elf/Makefile: Reflow and sort most variable assignments
    - Generate gcc-macros.h
    - x86: HAVE_X86_LAHF_SAHF, HAVE_X86_MOVBE and -march=x86-64-vN (bug 28782)
    - math: Add more inputs to atan2 accuracy tests [BZ #28765]
    - Disable debuginfod in printer tests [BZ #28757]
    - Update syscall lists for Linux 5.16
    - i386: Remove broken CAN_USE_REGISTER_ASM_EBP (bug 28771)
    - stdlib: Fix formatting of tests list in Makefile
    - stdlib: Sort tests in Makefile
    - x86_64: Fix SSE4.2 libmvec atan2 function accuracy [BZ #28765]
    - debug: Synchronize feature guards in fortified functions [BZ #28746]
    - debug: Autogenerate _FORTIFY_SOURCE tests
    - Do not build libresolv module with 64 bit time_t flags
    - Revert "linux: Fix ancillary 64-bit time timestamp conversion (BZ #28349, BZ #28350)"
    - Revert "support: Add support_socket_so_timestamp_time64"
    - timezone: Fix tst-bz28707 Makefile rule
    - linux: Fix ancillary 64-bit time timestamp conversion (BZ #28349, BZ #28350)
    - support: Add support_socket_so_timestamp_time64
    - elf: Fix 64 time_t support for installed statically binaries
    - Enable _FORTIFY_SOURCE=3 for gcc 12 and above
    - manual: Drop obsolete @refill
    - aarch64: Add HWCAP2_ECV from Linux 5.16
    - Use Linux 5.16 in build-many-glibcs.py
    - x86: Fix __wcsncmp_evex in strcmp-evex.S [BZ# 28755]
    - x86: Fix __wcsncmp_avx2 in strcmp-avx2.S [BZ# 28755]
    - math: Fix float conversion regressions with gcc-12 [BZ #28713]
    - elf: Simplify software TM implementation in _dl_find_object
    - Restore ENTRY_POINT definition on hppa, ia64 (bug 28749)
    - elf: Fix fences in _dl_find_object_update (bug 28745)
    - ttydefaults.h: Fix CSTATUS to control-t
    - AArch64: Check for SVE in ifuncs [BZ #28744]
    - debug: Remove catchsegv and libSegfault (BZ #14913)
    - Documentation for OpenRISC port
    - build-many-glibcs.py: add OpenRISC support
    - or1k: Build Infrastructure
    - or1k: ABI lists
    - or1k: Linux ABI
    - or1k: Linux Syscall Interface
    - or1k: math soft float support
    - or1k: Atomics and Locking primitives
    - or1k: Thread Local Storage support
    - or1k: startup and dynamic linking code
    - or1k: ABI Implementation
    - linux/syscalls: Add or1k_atomic syscall for OpenRISC
    - elf: Add reloc for OpenRISC
    - elf: Add a comment after trailing backslashes
    - elf: Also try DT_RUNPATH for LD_AUDIT dlopen [BZ #28455]
    - elf: Fix tst-linkall-static link when pthread is not in libc