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unknown user pushed a change to branch hjl/ifunc/c in repository glibc.

discards a89f56e004 x86-64: Add memmove.h adds 4f26ef1b67 x86_64: Remove redundant REX bytes from memchr.S adds 2e0bbbfbf9 Add reallocarray function adds 4158ba082c Delay initialization of CPU features struct in static binaries adds cfa9bb61cd Use test-driver in nptl/tst-fork3.c adds 52bd938169 posix: Implement preadv2 and pwritev2 adds 491bb0858e Avoid tickling a linker bug from microblaze pt-vfork.S. adds 139904b7e4 Fix more namespace issues in sys/ucontext.h (bug 21457). adds 72b81552a1 Add shim header for bits/syscall.h. adds 6da85a0daf conformtest: Correct signal.h expectations for XPG4 / XPG42. adds 09103e4025 Include sys/param.h in stdlib/gmp-impl.h instead of redefini [...] adds 91b6eb1140 Add internal facility for dynamic array handling adds 673cb072a4 getaddrinfo: Always allocate canonical name on the heap adds 2714c5f3c9 resolv: Tests for various versions of res_init adds ca4b396ebe posix: Add missing build flags for p{write,read}v2 adds 6257fcfd58 getaddrinfo: Fix localplt failure involving strdup adds 9c65eec494 Fix sigevent namespace (bug 21543). adds 3e6def237a manual: Provide consistent errno documentation. adds 808fd9e6fe x86: Update __x86_shared_non_temporal_threshold adds 363911ce13 getaddrinfo: Eliminate another strdup call adds 82f43dd2d1 Include shlib-compat.h in many sunrpc/nis source files. adds d36c52becb Add forgotten changelog entry for 82f43dd2d1 adds 6b69f98dcd benchtests: Add more tests for memrchr adds 8951dd0b14 Regenerate sysdeps/gnu/errlist.c. adds 7553131847 Fix struct sigaltstack namespace (bug 21517). adds c4c96f92f7 Define SIG_HOLD for XPG4 (bug 21538). adds d8a7d10324 x86-64: Update LO_HI_LONG for p{readv,writev}{64}v2 adds 7395928b95 x86_64: Remove redundant REX bytes from memrchr.S adds 30cb625a21 x86-64: Update strlen.S to support wcslen/wcsnlen adds 9cd30491dd x86: Add macros to implement ifunce selection in C adds ef9c4cb6c7 x86-64: Optimize wmemset with SSE2/AVX2/AVX512 adds 935971ba6b x86-64: Optimize memcmp/wmemcmp with AVX2 and MOVBE new 61c7774d30 x86-64: Add ifunc-memmove.h

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Summary of changes: ChangeLog | 605 +++++++++++++++++++++ NEWS | 14 + benchtests/bench-memchr.c | 17 +- bits/signum.h | 2 +- bits/types/stack_t.h | 2 +- conform/data/signal.h-data | 28 +- csu/libc-start.c | 6 + debug/segfault.c | 2 +- hurd/hurd/signal.h | 2 +- hurd/trampoline.c | 2 +- include/signal.h | 4 +- include/stdlib.h | 4 + include/sys/uio.h | 6 + include/wchar.h | 3 + malloc/Makefile | 31 +- malloc/Versions | 12 + malloc/dynarray-skeleton.c | 499 +++++++++++++++++ malloc/dynarray.h | 176 ++++++ .../sigaltstack.c => malloc/dynarray_at_failure.c | 23 +- malloc/dynarray_emplace_enlarge.c | 69 +++ malloc/dynarray_finalize.c | 62 +++ malloc/dynarray_resize.c | 59 ++ .../memcpy.c => malloc/dynarray_resize_clear.c | 38 +- malloc/malloc-internal.h | 19 + malloc/malloc.h | 8 + malloc/reallocarray.c | 37 ++ malloc/tst-dynarray-at-fail.c | 125 +++++ malloc/tst-dynarray-fail.c | 418 ++++++++++++++ malloc/tst-dynarray-shared.h | 77 +++ malloc/tst-dynarray.c | 517 ++++++++++++++++++ malloc/tst-reallocarray.c | 118 ++++ manual/errno.texi | 66 +-- manual/llio.texi | 109 ++++ manual/macros.texi | 1 + manual/memory.texi | 46 +- misc/Makefile | 8 +- misc/Versions | 3 + signal/sigaltstack.c => misc/preadv2.c | 16 +- signal/sigaltstack.c => misc/preadv64v2.c | 16 +- signal/sigaltstack.c => misc/pwritev2.c | 16 +- signal/sigaltstack.c => misc/pwritev64v2.c | 16 +- misc/sys/uio.h | 41 ++ misc/tst-preadvwritev-common.c | 19 +- signal/sigaltstack.c => misc/tst-preadvwritev2.c | 23 +- .../sigaltstack.c => misc/tst-preadvwritev64v2.c | 25 +- nis/nis_add.c | 1 + nis/nis_addmember.c | 1 + nis/nis_call.c | 1 + nis/nis_checkpoint.c | 1 + nis/nis_clone_dir.c | 1 + nis/nis_clone_obj.c | 1 + nis/nis_clone_res.c | 1 + nis/nis_creategroup.c | 1 + nis/nis_defaults.c | 1 + nis/nis_destroygroup.c | 1 + nis/nis_domain_of.c | 1 + nis/nis_domain_of_r.c | 1 + nis/nis_error.c | 1 + nis/nis_file.c | 1 + nis/nis_free.c | 1 + nis/nis_getservlist.c | 1 + nis/nis_ismember.c | 1 + nis/nis_local_names.c | 1 + nis/nis_lookup.c | 1 + nis/nis_mkdir.c | 1 + nis/nis_modify.c | 1 + nis/nis_ping.c | 1 + nis/nis_print.c | 1 + nis/nis_print_group_entry.c | 1 + nis/nis_remove.c | 1 + nis/nis_removemember.c | 1 + nis/nis_rmdir.c | 1 + nis/nis_server.c | 1 + nis/nis_subr.c | 1 + nis/nis_table.c | 1 + nis/nis_util.c | 1 + nis/nis_verifygroup.c | 1 + nis/nis_xdr.c | 1 + nis/yp_xdr.c | 1 + nis/ypclnt.c | 1 + nis/ypupdate_xdr.c | 1 + nptl/tst-cancel4.c | 71 +++ nptl/tst-fork3.c | 6 +- resolv/Makefile | 8 + resolv/res_libc.c | 5 +- resolv/tst-resolv-res_init-skeleton.c | 601 ++++++++++++++++++++ .../tst-resolv-res_init-thread.c | 13 +- .../x32/sysdep.h => resolv/tst-resolv-res_init.c | 13 +- signal/sigaltstack.c | 2 +- signal/signal.h | 9 +- stdlib/gmp-impl.h | 8 +- stdlib/stdlib.h | 11 + sunrpc/auth_des.c | 1 + sunrpc/auth_none.c | 1 + sunrpc/auth_unix.c | 1 + sunrpc/authdes_prot.c | 1 + sunrpc/authuxprot.c | 1 + sunrpc/clnt_gen.c | 1 + sunrpc/clnt_perr.c | 1 + sunrpc/clnt_raw.c | 1 + sunrpc/clnt_simp.c | 1 + sunrpc/clnt_tcp.c | 1 + sunrpc/clnt_udp.c | 1 + sunrpc/clnt_unix.c | 1 + sunrpc/des_crypt.c | 2 +- sunrpc/des_soft.c | 3 +- sunrpc/get_myaddr.c | 2 +- sunrpc/key_call.c | 1 + sunrpc/key_prot.c | 1 + sunrpc/netname.c | 1 + sunrpc/pm_getmaps.c | 1 + sunrpc/pm_getport.c | 1 + sunrpc/pmap_clnt.c | 1 + sunrpc/pmap_prot.c | 1 + sunrpc/pmap_prot2.c | 1 + sunrpc/pmap_rmt.c | 5 +- sunrpc/publickey.c | 1 + sunrpc/rpc_cmsg.c | 1 + sunrpc/rpc_dtable.c | 1 + sunrpc/rpc_prot.c | 2 +- sunrpc/rpc_thread.c | 2 +- sunrpc/rtime.c | 1 + sunrpc/svc.c | 1 + sunrpc/svc_auth.c | 1 + sunrpc/svc_raw.c | 1 + sunrpc/svc_run.c | 1 + sunrpc/svc_tcp.c | 1 + sunrpc/svc_udp.c | 1 + sunrpc/svc_unix.c | 1 + sunrpc/svcauth_des.c | 1 + sunrpc/xdr.c | 1 + sunrpc/xdr_array.c | 1 + sunrpc/xdr_float.c | 1 + sunrpc/xdr_intXX_t.c | 1 + sunrpc/xdr_mem.c | 1 + sunrpc/xdr_rec.c | 1 + sunrpc/xdr_ref.c | 1 + sunrpc/xdr_sizeof.c | 1 + sunrpc/xdr_stdio.c | 2 + support/Makefile | 13 + support/capture_subprocess.h | 61 +++ support/namespace.h | 12 + bits/types/stack_t.h => support/support-xstat.c | 27 +- support/support.h | 15 + support/support_can_chroot.c | 65 +++ support/support_capture_subprocess.c | 108 ++++ support/support_capture_subprocess_check.c | 67 +++ .../support_isolate_in_subprocess.c | 30 +- support/support_shared_allocate.c | 57 ++ .../support_write_file_string.c | 42 +- support/tst-support_capture_subprocess.c | 188 +++++++ .../linux/x86_64/x32/sysdep.h => support/xchroot.c | 19 +- .../linux/x86_64/x32/sysdep.h => support/xdup2.c | 17 +- .../linux/x86_64/x32/sysdep.h => support/xmkdir.c | 19 +- bits/types/stack_t.h => support/xopen.c | 29 +- .../linux/x86_64/x32/sysdep.h => support/xpipe.c | 17 +- support/xunistd.h | 11 +- sysdeps/arm/sys/ucontext.h | 19 +- sysdeps/gnu/errlist.c | 82 ++- sysdeps/i386/sys/ucontext.h | 44 +- sysdeps/m68k/sys/ucontext.h | 19 +- sysdeps/mach/hurd/i386/signal-defines.sym | 6 +- sysdeps/mach/hurd/sigaltstack.c | 6 +- sysdeps/mach/hurd/sigstack.c | 2 +- sysdeps/mips/sys/ucontext.h | 37 +- sysdeps/posix/getaddrinfo.c | 122 ++--- bits/types/stack_t.h => sysdeps/posix/preadv2.c | 31 +- bits/types/stack_t.h => sysdeps/posix/preadv64v2.c | 30 +- bits/types/stack_t.h => sysdeps/posix/pwritev2.c | 31 +- .../types/stack_t.h => sysdeps/posix/pwritev64v2.c | 31 +- sysdeps/unix/bsd/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/aarch64/libc-start.c | 23 +- sysdeps/unix/sysv/linux/aarch64/libc.abilist | 6 + sysdeps/unix/sysv/linux/alpha/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/alpha/libc.abilist | 6 + sysdeps/unix/sysv/linux/alpha/sys/procfs.h | 2 +- sysdeps/unix/sysv/linux/alpha/sys/ucontext.h | 14 +- sysdeps/unix/sysv/linux/arm/libc.abilist | 6 + sysdeps/unix/sysv/linux/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/bits/types/stack_t.h | 2 +- sysdeps/unix/sysv/linux/bits/uio.h | 6 + sysdeps/unix/sysv/linux/hppa/____longjmp_chk.c | 2 +- sysdeps/unix/sysv/linux/hppa/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/hppa/libc.abilist | 6 + sysdeps/unix/sysv/linux/i386/libc.abilist | 6 + sysdeps/unix/sysv/linux/ia64/libc.abilist | 6 + sysdeps/unix/sysv/linux/ia64/sys/procfs.h | 2 +- sysdeps/unix/sysv/linux/include/bits/syscall.h | 3 + sysdeps/unix/sysv/linux/kernel-features.h | 5 + sysdeps/unix/sysv/linux/m68k/____longjmp_chk.c | 2 +- sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist | 6 + sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist | 6 + sysdeps/unix/sysv/linux/m68k/sys/ucontext.h | 31 +- sysdeps/unix/sysv/linux/microblaze/libc.abilist | 6 + sysdeps/unix/sysv/linux/microblaze/localplt.data | 1 - sysdeps/unix/sysv/linux/microblaze/pt-vfork.S | 50 +- sysdeps/unix/sysv/linux/microblaze/vfork.S | 1 + sysdeps/unix/sysv/linux/mips/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/mips/bits/types/stack_t.h | 2 +- .../unix/sysv/linux/mips/mips32/fpu/libc.abilist | 6 + .../unix/sysv/linux/mips/mips32/nofpu/libc.abilist | 6 + .../unix/sysv/linux/mips/mips64/n32/libc.abilist | 6 + .../unix/sysv/linux/mips/mips64/n64/libc.abilist | 6 + sysdeps/unix/sysv/linux/mips/sys/ucontext.h | 88 +-- sysdeps/unix/sysv/linux/nios2/libc.abilist | 6 + sysdeps/unix/sysv/linux/nios2/sys/ucontext.h | 12 +- .../sysv/linux/powerpc/powerpc32/fpu/libc.abilist | 6 + .../linux/powerpc/powerpc32/nofpu/libc.abilist | 6 + .../sysv/linux/powerpc/powerpc64/libc-le.abilist | 6 + .../unix/sysv/linux/powerpc/powerpc64/libc.abilist | 6 + sysdeps/unix/sysv/linux/powerpc/sys/procfs.h | 2 +- sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h | 73 ++- sysdeps/unix/sysv/linux/preadv.c | 2 + sysdeps/unix/sysv/linux/preadv2.c | 55 ++ sysdeps/unix/sysv/linux/preadv64.c | 2 + sysdeps/unix/sysv/linux/preadv64v2.c | 55 ++ sysdeps/unix/sysv/linux/pwrite64.c | 1 + sysdeps/unix/sysv/linux/pwritev.c | 2 + sysdeps/unix/sysv/linux/{preadv.c => pwritev2.c} | 50 +- sysdeps/unix/sysv/linux/pwritev64.c | 2 + sysdeps/unix/sysv/linux/pwritev64v2.c | 55 ++ sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist | 6 + sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist | 6 + sysdeps/unix/sysv/linux/s390/sys/ucontext.h | 37 +- sysdeps/unix/sysv/linux/sh/libc.abilist | 6 + sysdeps/unix/sysv/linux/sh/sys/procfs.h | 2 +- sysdeps/unix/sysv/linux/sh/sys/ucontext.h | 48 +- sysdeps/unix/sysv/linux/sparc/bits/signum.h | 2 +- sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist | 6 + sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist | 6 + sysdeps/unix/sysv/linux/sys/procfs.h | 2 +- .../sysv/linux/tile/tilegx/tilegx32/libc.abilist | 6 + .../sysv/linux/tile/tilegx/tilegx64/libc.abilist | 6 + sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist | 6 + sysdeps/unix/sysv/linux/x86/sys/ucontext.h | 74 ++- sysdeps/unix/sysv/linux/x86_64/64/libc.abilist | 6 + sysdeps/unix/sysv/linux/x86_64/sysdep.h | 2 +- sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist | 6 + sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h | 4 + sysdeps/x86/cacheinfo.c | 6 +- sysdeps/x86/cpu-features.h | 1 + sysdeps/x86/init-arch.h | 40 ++ sysdeps/x86/libc-start.c | 23 +- sysdeps/x86_64/memchr.S | 28 +- sysdeps/x86_64/memrchr.S | 36 +- sysdeps/x86_64/memset.S | 18 +- sysdeps/x86_64/multiarch/Makefile | 9 +- sysdeps/x86_64/multiarch/ifunc-impl-list.c | 30 + .../multiarch/{memmove.h => ifunc-memmove.h} | 17 +- sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S | 425 +++++++++++++++ sysdeps/x86_64/multiarch/memcmp.S | 13 +- sysdeps/x86_64/multiarch/memcpy.c | 2 +- sysdeps/x86_64/multiarch/memmove.c | 2 +- sysdeps/x86_64/multiarch/mempcpy.c | 2 +- .../x86_64/multiarch/memset-avx2-unaligned-erms.S | 8 +- .../multiarch/memset-avx512-unaligned-erms.S | 9 +- .../x86_64/multiarch/memset-vec-unaligned-erms.S | 24 +- sysdeps/x86_64/multiarch/memset.S | 13 +- sysdeps/x86_64/multiarch/wmemcmp-avx2-movbe.S | 4 + sysdeps/x86_64/multiarch/wmemcmp.S | 13 +- sysdeps/x86_64/multiarch/{wmemcmp.S => wmemset.c} | 33 +- sysdeps/x86_64/multiarch/wmemset.h | 42 ++ .../multiarch/wmemset_chk-nonshared.S} | 14 +- .../x86_64/multiarch/{memmove.c => wmemset_chk.c} | 25 +- sysdeps/x86_64/strlen.S | 61 ++- sysdeps/x86_64/wcsnlen.S | 7 + sysdeps/x86_64/{bzero.S => wmemset.S} | 0 .../stack_t.h => sysdeps/x86_64/wmemset_chk.S | 30 +- 268 files changed, 6445 insertions(+), 872 deletions(-) create mode 100644 malloc/dynarray-skeleton.c create mode 100644 malloc/dynarray.h copy signal/sigaltstack.c => malloc/dynarray_at_failure.c (62%) create mode 100644 malloc/dynarray_emplace_enlarge.c create mode 100644 malloc/dynarray_finalize.c create mode 100644 malloc/dynarray_resize.c copy sysdeps/x86_64/multiarch/memcpy.c => malloc/dynarray_resize_clear.c (56%) create mode 100644 malloc/reallocarray.c create mode 100644 malloc/tst-dynarray-at-fail.c create mode 100644 malloc/tst-dynarray-fail.c create mode 100644 malloc/tst-dynarray-shared.h create mode 100644 malloc/tst-dynarray.c create mode 100644 malloc/tst-reallocarray.c copy signal/sigaltstack.c => misc/preadv2.c (69%) copy signal/sigaltstack.c => misc/preadv64v2.c (69%) copy signal/sigaltstack.c => misc/pwritev2.c (69%) copy signal/sigaltstack.c => misc/pwritev64v2.c (69%) copy signal/sigaltstack.c => misc/tst-preadvwritev2.c (65%) copy signal/sigaltstack.c => misc/tst-preadvwritev64v2.c (63%) create mode 100644 resolv/tst-resolv-res_init-skeleton.c copy sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h => resolv/tst-resolv-res_init-thr [...] copy sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h => resolv/tst-resolv-res_init.c (72%) create mode 100644 support/capture_subprocess.h copy bits/types/stack_t.h => support/support-xstat.c (66%) create mode 100644 support/support_can_chroot.c create mode 100644 support/support_capture_subprocess.c create mode 100644 support/support_capture_subprocess_check.c copy signal/sigaltstack.c => support/support_isolate_in_subprocess.c (59%) create mode 100644 support/support_shared_allocate.c copy sysdeps/x86_64/multiarch/memcpy.c => support/support_write_file_string.c (57%) create mode 100644 support/tst-support_capture_subprocess.c copy sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h => support/xchroot.c (72%) copy sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h => support/xdup2.c (72%) copy sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h => support/xmkdir.c (71%) copy bits/types/stack_t.h => support/xopen.c (67%) copy sysdeps/unix/sysv/linux/x86_64/x32/sysdep.h => support/xpipe.c (72%) copy bits/types/stack_t.h => sysdeps/posix/preadv2.c (62%) copy bits/types/stack_t.h => sysdeps/posix/preadv64v2.c (63%) copy bits/types/stack_t.h => sysdeps/posix/pwritev2.c (62%) copy bits/types/stack_t.h => sysdeps/posix/pwritev64v2.c (60%) create mode 100644 sysdeps/unix/sysv/linux/include/bits/syscall.h create mode 100644 sysdeps/unix/sysv/linux/preadv2.c create mode 100644 sysdeps/unix/sysv/linux/preadv64v2.c copy sysdeps/unix/sysv/linux/{preadv.c => pwritev2.c} (50%) create mode 100644 sysdeps/unix/sysv/linux/pwritev64v2.c rename sysdeps/x86_64/multiarch/{memmove.h => ifunc-memmove.h} (81%) create mode 100644 sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S create mode 100644 sysdeps/x86_64/multiarch/wmemcmp-avx2-movbe.S copy sysdeps/x86_64/multiarch/{wmemcmp.S => wmemset.c} (65%) create mode 100644 sysdeps/x86_64/multiarch/wmemset.h copy sysdeps/{unix/sysv/linux/x86_64/x32/sysdep.h => x86_64/multiarch/wmemset_chk- [...] copy sysdeps/x86_64/multiarch/{memmove.c => wmemset_chk.c} (63%) create mode 100644 sysdeps/x86_64/wcsnlen.S copy sysdeps/x86_64/{bzero.S => wmemset.S} (100%) copy bits/types/stack_t.h => sysdeps/x86_64/wmemset_chk.S (63%)