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* linux: Add HWCAP2_HBC from Linux 6.6 to AArch64 bits/hwcap.hAdhemerval Zanella2023-11-031-0/+1
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* linux: Add FSCONFIG_CMD_CREATE_EXCL from Linux 6.6 to sys/mount.hAdhemerval Zanella2023-11-031-0/+2
| | | | | The tst-mount-consts.py does not need to be updated because kernel exports it as an enum (compare_macro_consts can not parse it).
* linux: Add MMAP_ABOVE4G from Linux 6.6 to sys/mman.hAdhemerval Zanella2023-11-032-1/+2
| | | | | | x86 added the flag (29f890d1050fc099f) for CET enabled. Also update tst-mman-consts.py test.
* Update kernel version to 6.6 in header constant testsAdhemerval Zanella2023-11-032-3/+3
| | | | | There are no new constants covered, the tst-mman-consts.py is updated separately along with a header constant addition.
* Update syscall lists for Linux 6.6Adhemerval Zanella2023-11-0328-2/+32
| | | | | Linux 6.6 has one new syscall for all architectures, fchmodat2, and the map_shadow_stack on x86_64.
* Use correct subdir when building tst-rfc3484* for mach and armArjun Shankar2023-11-011-3/+0
| | | | | | | | | Commit 7f602256ab5b85db1dbfb5f40bd109c4b37b68c8 moved the tst-rfc3484* tests from posix/ to nss/, but didn't correct references to point to their new subdir when building for mach and arm. This commit fixes that. Tested with build-many-glibcs.sh for i686-gnu.
* crypt: Remove libcrypt supportAdhemerval Zanella2023-10-3034-271/+0
| | | | | | | | | | | | | | | | | | All the crypt related functions, cryptographic algorithms, and make requirements are removed, with only the exception of md5 implementation which is moved to locale folder since it is required by localedef for integrity protection (libc's locale-reading code does not check these, but localedef does generate them). Besides thec code itself, both internal documentation and the manual is also adjusted. This allows to remove both --enable-crypt and --enable-nss-crypt configure options. Checked with a build for all affected ABIs. Co-authored-by: Zack Weinberg <zack@owlfolio.org> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* LoongArch: Update hwcap.h to sync with LoongArch kernel.caiyinyu2023-10-261-0/+1
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* AArch64: Add support for MOPS memcpy/memmove/memsetWilco Dijkstra2023-10-242-0/+4
| | | | | | | | Add support for MOPS in cpu_features and INIT_ARCH. Add ifuncs using MOPS for memcpy, memmove and memset (use .inst for now so it works with all binutils versions without needing complex configure and conditional compilation). Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
* aarch64: Add vector implementations of exp10 routinesJoe Ramsay2023-10-231-0/+4
| | | | | Double-precision routines either reuse the exp table (AdvSIMD) or use SVE FEXPA intruction.
* aarch64: Add vector implementations of log10 routinesJoe Ramsay2023-10-231-0/+4
| | | | A table is also added, which is shared between AdvSIMD and SVE log10.
* aarch64: Add vector implementations of log2 routinesJoe Ramsay2023-10-231-0/+4
| | | | A table is also added, which is shared between AdvSIMD and SVE log2.
* aarch64: Add vector implementations of exp2 routinesJoe Ramsay2023-10-231-0/+4
| | | | Some routines reuse table from v_exp_data.c
* aarch64: Add vector implementations of tan routinesJoe Ramsay2023-10-231-0/+4
| | | | | This includes some utility headers for evaluating polynomials using various schemes.
* tst-spawn-cgroup.c: Fix argument order of UNSUPPORTED message.Stefan Liebler2023-10-201-3/+3
| | | | | | | The arguments for "expected" and "got" are mismatched. Furthermore this patch is dumping both values as hex. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Florian Weimer <fweimer@redhat.com>
* Add HWCAP2_MOPS from Linux 6.5 to AArch64 bits/hwcap.hJoseph Myers2023-10-171-0/+1
| | | | | | | Linux 6.5 adds a new AArch64 HWCAP2 value, HWCAP2_MOPS. Add it to glibc's bits/hwcap.h. Tested with build-many-glibcs.py for aarch64-linux-gnu.
* Add SCM_SECURITY, SCM_PIDFD to bits/socket.hJoseph Myers2023-10-161-0/+4
| | | | | | | | | | | | Linux 6.5 adds a constant SCM_PIDFD (recall that the non-uapi linux/socket.h, where this constant is added, is in fact a header providing many constants that are part of the kernel/userspace interface). This shows up that SCM_SECURITY, from the same set of definitions and added in Linux 2.6.17, is also missing from glibc, although glibc has the first two constants from this set, SCM_RIGHTS and SCM_CREDENTIALS; add both missing constants to glibc. Tested for x86_64.
* Add AT_HANDLE_FID from Linux 6.5 to bits/fcntl-linux.hJoseph Myers2023-10-161-0/+11
| | | | | | | | | Linux 6.5 adds a constant AT_HANDLE_FID; add it to glibc. Because this is a flag for the function name_to_handle_at declared in bits/fcntl-linux.h, put the flag there rather than alongside other AT_* flags in (OS-independent) fcntl.h. Tested for x86_64.
* Fix FORTIFY_SOURCE false positiveVolker Weißmann2023-10-041-1/+3
| | | | | | | | | | | | | | | | When -D_FORTIFY_SOURCE=2 was given during compilation, sprintf and similar functions will check if their first argument is in read-only memory and exit with *** %n in writable segment detected *** otherwise. To check if the memory is read-only, glibc reads frpm the file "/proc/self/maps". If opening this file fails due to too many open files (EMFILE), glibc will now ignore this error. Fixes [BZ #30932] Signed-off-by: Volker Weißmann <volker.weissmann@gmx.de> Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* Linux: add ST_NOSYMFOLLOWKir Kolyshkin2023-10-021-1/+3
| | | | | | | | | | Linux v5.10 added a mount option MS_NOSYMFOLLOW, which was added to glibc in commit 0ca21427d950755b. Add the corresponding statfs/statvfs flag bit, ST_NOSYMFOLLOW. Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* io: Do not implement fstat with fstatatAdhemerval Zanella2023-09-273-12/+68
| | | | | | | | | | | | | | | | AT_EMPTY_PATH is a requirement to implement fstat over fstatat, however it does not prevent the kernel to read the path argument. It is not an issue, but on x86-64 with SMAP-capable CPUs the kernel is forced to perform expensive user memory access. After that regular lookup is performed which adds even more overhead. Instead, issue the fstat syscall directly on LFS fstat implementation (32 bit architectures will still continue to use statx, which is required to have 64 bit time_t support). it should be even a small performance gain on non x86_64, since there is no need to handle the path argument. Checked on x86_64-linux-gnu.
* Revert "LoongArch: Add glibc.cpu.hwcap support."caiyinyu2023-09-215-158/+4
| | | | This reverts commit a53451559dc9cce765ea5bcbb92c4007e058e92b.
* Update kernel version to 6.5 in header constant testsJoseph Myers2023-09-202-2/+2
| | | | | | | | | | This patch updates the kernel version in the tests tst-mman-consts.py and tst-pidfd-consts.py to 6.5. (There are no new constants covered by these tests in 6.5 that need any other header changes; tst-mount-consts.py was updated separately along with a header constant addition.) Tested with build-many-glibcs.py.
* LoongArch: Add glibc.cpu.hwcap support.caiyinyu2023-09-195-4/+158
| | | | | | | | | | | | | | | | | | | | | | | | | Key Points: 1. On lasx & lsx platforms, We must use _dl_runtime_{profile, resolve}_{lsx, lasx} to save vector registers. 2. Via "tunables", users can choose str/mem_{lasx,lsx,unaligned} functions with `export GLIBC_TUNABLES=glibc.cpu.hwcaps=LASX,...`. Note: glibc.cpu.hwcaps doesn't affect _dl_runtime_{profile, resolve}_{lsx, lasx} selection. Usage Notes: 1. Only valid inputs: LASX, LSX, UAL. Case-sensitive, comma-separated, no spaces. 2. Example: `export GLIBC_TUNABLES=glibc.cpu.hwcaps=LASX,UAL` turns on LASX & UAL. Unmentioned features turn off. With default ifunc: lasx > lsx > unaligned > aligned > generic, effect is: lasx > unaligned > aligned > generic; lsx off. 3. Incorrect GLIBC_TUNABLES settings will show error messages. For example: On lsx platforms, you cannot enable lasx features. If you do that, you will get error messages. 4. Valid input examples: - GLIBC_TUNABLES=glibc.cpu.hwcaps=LASX: lasx > aligned > generic. - GLIBC_TUNABLES=glibc.cpu.hwcaps=LSX,UAL: lsx > unaligned > aligned > generic. - GLIBC_TUNABLES=glibc.cpu.hwcaps=LASX,UAL,LASX,UAL,LSX,LASX,UAL: Repetitions allowed but not recommended. Results in: lasx > lsx > unaligned > aligned > generic.
* Add MOVE_MOUNT_BENEATH from Linux 6.5 to sys/mount.hJoseph Myers2023-09-142-2/+3
| | | | | | | | This patch adds the MOVE_MOUNT_BENEATH constant from Linux 6.5 to glibc's sys/mount.h and updates tst-mount-consts.py to reflect these constants being up to date with that Linux kernel version. Tested with build-many-glibcs.py.
* Update syscall lists for Linux 6.5Joseph Myers2023-09-1228-2/+31
| | | | | | | | Linux 6.5 has one new syscall, cachestat, and also enables the cacheflush syscall for hppa. Update syscall-names.list and regenerate the arch-syscall.h headers with build-many-glibcs.py update-syscalls. Tested with build-many-glibcs.py.
* ia64: Work around miscompilation and fix build on ia64's gcc-10 and laterSergei Trofimovich2023-09-111-1/+3
| | | | | | | | | | | | | Needed since gcc-10 enabled -fno-common by default. [In use in Gentoo since gcc-10, no problems observed. Also discussed with and reviewed by Jessica Clarke from Debian. Andreas] Bug: https://bugs.gentoo.org/723268 Reviewed-by: Carlos O'Donell <carlos@redhat.com> Signed-off-by: Sergei Trofimovich <slyich@gmail.com> Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
* io: Fix record locking contants for powerpc64 with __USE_FILE_OFFSET64Aurelien Jarno2023-09-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 5f828ff824e3b7cd1 ("io: Fix F_GETLK, F_SETLK, and F_SETLKW for powerpc64") fixed an issue with the value of the lock constants on powerpc64 when not using __USE_FILE_OFFSET64, but it ended-up also changing the value when using __USE_FILE_OFFSET64 causing an API change. Fix that by also checking that define, restoring the pre 4d0fe291aed3a476a commit values: Default values: - F_GETLK: 5 - F_SETLK: 6 - F_SETLKW: 7 With -D_FILE_OFFSET_BITS=64: - F_GETLK: 12 - F_SETLK: 13 - F_SETLKW: 14 At the same time, it has been noticed that there was no test for io lock with __USE_FILE_OFFSET64, so just add one. Tested on x86_64-linux-gnu, i686-linux-gnu and powerpc64le-unknown-linux-gnu. Resolves: BZ #30804. Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* linux: Add pidfd_getpidAdhemerval Zanella Netto2023-09-0542-0/+478
| | | | | | | | | | | | | | | | | | | | | | | | This interface allows to obtain the associated process ID from the process file descriptor. It is done by parsing the procps fdinfo information. Its prototype is: pid_t pidfd_getpid (int fd) It returns the associated pid or -1 in case of an error and sets the errno accordingly. The possible errno values are those from open, read, and close (used on procps parsing), along with: - EBADF if the FD is negative, does not have a PID associated, or if the fdinfo fields contain a value larger than pid_t. - EREMOTE if the PID is in a separate namespace. - ESRCH if the process is already terminated. Checked on x86_64-linux-gnu on Linux 4.15 (no CLONE_PIDFD or waitid support), Linux 5.4 (full support), and Linux 6.2. Reviewed-by: Florian Weimer <fweimer@redhat.com>
* posix: Add pidfd_spawn and pidfd_spawnp (BZ 30349)Adhemerval Zanella Netto2023-09-0551-3/+499
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Returning a pidfd allows a process to keep a race-free handle for a child process, otherwise, the caller will need to either use pidfd_open (which still might be subject to TOCTOU) or keep the old racy interface base on pid_t. To correct use pifd_spawn, the kernel must support not only returning the pidfd with clone/clone3 but also waitid (P_PIDFD) (added on Linux 5.4). If kernel does not support the waitid, pidfd return ENOSYS. It avoids the need to racy workarounds, such as reading the procfs fdinfo to get the pid to use along with other wait interfaces. These interfaces are similar to the posix_spawn and posix_spawnp, with the only difference being it returns a process file descriptor (int) instead of a process ID (pid_t). Their prototypes are: int pidfd_spawn (int *restrict pidfd, const char *restrict file, const posix_spawn_file_actions_t *restrict facts, const posix_spawnattr_t *restrict attrp, char *const argv[restrict], char *const envp[restrict]) int pidfd_spawnp (int *restrict pidfd, const char *restrict path, const posix_spawn_file_actions_t *restrict facts, const posix_spawnattr_t *restrict attrp, char *const argv[restrict_arr], char *const envp[restrict_arr]); A new symbol is used instead of a posix_spawn extension to avoid possible issues with language bindings that might track the return argument lifetime. Although on Linux pid_t and int are interchangeable, POSIX only states that pid_t should be a signed integer. Both symbols reuse the posix_spawn posix_spawn_file_actions_t and posix_spawnattr_t, to void rehash posix_spawn API or add a new one. It also means that both interfaces support the same attribute and file actions, and a new flag or file action on posix_spawn is also added automatically for pidfd_spawn. Also, using posix_spawn plumbing allows the reusing of most of the current testing with some changes: - waitid is used instead of waitpid since it is a more generic interface. - tst-posix_spawn-setsid.c is adapted to take into consideration that the caller can check for session id directly. The test now spawns itself and writes the session id as a file instead. - tst-spawn3.c need to know where pidfd_spawn is used so it keeps an extra file description unused. Checked on x86_64-linux-gnu on Linux 4.15 (no CLONE_PIDFD or waitid support), Linux 5.4 (full support), and Linux 6.2. Reviewed-by: Florian Weimer <fweimer@redhat.com>
* linux: Add posix_spawnattr_{get, set}cgroup_np (BZ 26371)Adhemerval Zanella Netto2023-09-0541-3/+414
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | These functions allow to posix_spawn and posix_spawnp to use CLONE_INTO_CGROUP with clone3, allowing the child process to be created in a different cgroup version 2. These are GNU extensions that are available only for Linux, and also only for the architectures that implement clone3 wrapper (HAVE_CLONE3_WRAPPER). To create a process on a different cgroupv2, one can use the: posix_spawnattr_t attr; posix_spawnattr_init (&attr); posix_spawnattr_setflags (&attr, POSIX_SPAWN_SETCGROUP); posix_spawnattr_setcgroup_np (&attr, cgroup); posix_spawn (...) Similar to other posix_spawn flags, POSIX_SPAWN_SETCGROUP control whether the cgroup file descriptor will be used or not with clone3. There is no fallback if either clone3 does not support the flag or if the architecture does not provide the clone3 wrapper, in this case posix_spawn returns EOPNOTSUPP. Checked on x86_64-linux-gnu. Reviewed-by: Florian Weimer <fweimer@redhat.com>
* linux: Define __ASSUME_CLONE3 to 0 for alpha, ia64, nios2, sh, and sparcAdhemerval Zanella Netto2023-09-055-0/+40
| | | | | | Not all architectures added clone3 syscall. Reviewed-by: Florian Weimer <fweimer@redhat.com>
* mips: Add the clone3 wrapperAdhemerval Zanella Netto2023-09-052-0/+141
| | | | | | | | | | It follows the internal signature: extern int clone3 (struct clone_args *__cl_args, size_t __size, int (*__func) (void *__arg), void *__arg); Checked on mips64el-linux-gnueabihf, mips64el-n32-linux-gnu, and mipsel-linux-gnu.
* arm: Add the clone3 wrapperAdhemerval Zanella Netto2023-09-052-0/+81
| | | | | | | | | It follows the internal signature: extern int clone3 (struct clone_args *__cl_args, size_t __size, int (*__func) (void *__arg), void *__arg); Checked on arm-linux-gnueabihf.
* LoongArch: Micro-optimize LD_PCRELXi Ruoyao2023-08-291-6/+4
| | | | | | | We are requiring Binutils >= 2.41, so explicit relocation syntax is always supported by the assembler. Use it to reduce one instruction. Signed-off-by: Xi Ruoyao <xry111@xry111.site>
* Add F_SEAL_EXEC from Linux 6.3 to bits/fcntl-linux.h.Kir Kolyshkin2023-08-281-0/+1
| | | | | | | | This patch adds the new F_SEAL_EXEC constant from Linux 6.3 (see Linux commit 6fd7353829c ("mm/memfd: add F_SEAL_EXEC") to bits/fcntl-linux.h. Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Linux: Avoid conflicting types in ld.so --list-diagnosticsFlorian Weimer2023-08-231-5/+8
| | | | | | | | The path auxv[*].a_val could either be an integer or a string, depending on the a_type value. Use a separate field, a_val_string, to simplify mechanical parsing of the --list-diagnostics output. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* sysdeps: tst-bz21269: fix -Wreturn-typeSam James2023-08-171-2/+0
| | | | | | | Thanks to Andreas Schwab for reporting. Fixes: 652b9fdb77d9fd056d4dd26dad2c14142768ab49 Signed-off-by: Sam James <sam@gentoo.org>
* sysdeps: tst-bz21269: handle ENOSYS & skip appropriatelySam James2023-08-161-1/+10
| | | | | | | | | SYS_modify_ldt requires CONFIG_MODIFY_LDT_SYSCALL to be set in the kernel, which some distributions may disable for hardening. Check if that's the case (unset) and mark the test as UNSUPPORTED if so. Reviewed-by: DJ Delorie <dj@redhat.com> Signed-off-by: Sam James <sam@gentoo.org>
* sysdeps: tst-bz21269: fix test parameterSam James2023-08-161-1/+1
| | | | | | | | All callers pass 1 or 0x11 anyway (same meaning according to man page), but still. Reviewed-by: DJ Delorie <dj@redhat.com> Signed-off-by: Sam James <sam@gentoo.org>
* Loongarch: Add ifunc support and add different versions of strlendengjianbo2023-08-141-0/+2
| | | | | | strlen-lasx is implemeted by LASX simd instructions(256bit) strlen-lsx is implemeted by LSX simd instructions(128bit) strlen-align is implemented by LA basic instructions and never use unaligned memory acess
* nscd: Do not rebuild getaddrinfo (bug 30709)Florian Weimer2023-08-111-16/+1
| | | | | | | | | | | | | | | | The nscd daemon caches hosts data from NSS modules verbatim, without filtering protocol families or sorting them (otherwise separate caches would be needed for certain ai_flags combinations). The cache implementation is complete separate from the getaddrinfo code. This means that rebuilding getaddrinfo is not needed. The only function actually used is __bump_nl_timestamp from check_pf.c, and this change moves it into nscd/connections.c. Tested on x86_64-linux-gnu with -fexceptions, built with build-many-glibcs.py. I also backported this patch into a distribution that still supports nscd and verified manually that caching still works. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* Add PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG etc. from Linux 6.4 to sys/ptrace.hJoseph Myers2023-08-089-7/+103
| | | | | | | | | | | Linux 6.4 adds new constants PTRACE_SET_SYSCALL_USER_DISPATCH_CONFIG and PTRACE_GET_SYSCALL_USER_DISPATCH_CONFIG. Add those to all relevant sys/ptrace.h headers, along with adding the associated argument structure to bits/ptrace-shared.h (named struct __ptrace_sud_config there following the usual convention for such structures). Tested for x86_64 and with build-many-glibcs.py.
* Add PACKET_VNET_HDR_SZ from Linux 6.4 to netpacket/packet.hJoseph Myers2023-08-081-0/+1
| | | | | | | Linux 6.4 adds a new constant PACKET_VNET_HDR_SZ; add it to glibc's netpacket/packet.h. Tested for x86_64.
* linux: statvfs: allocate spare for f_typeнаб2023-08-082-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is the only missing part in struct statvfs. The LSB calls [f]statfs() deprecated, and its weird types are definitely off-putting. However, its use is required to get f_type. Instead, allocate one of the six spares to f_type, copied directly from struct statfs. This then becomes a small glibc extension to the standard interface on Linux and the Hurd, instead of two different interfaces, one of which is quite odd due to being an ABI type, and there no longer is any reason to use statfs(). The underlying kernel type is a mess, but all architectures agree on u32 (or more) for the ABI, and all filesystem magicks are 32-bit integers. We don't lose any generality by using u32, and by doing so we both make the API consistent with the Hurd, and allow C++ switch(f_type) { case RAMFS_MAGIC: ...; } Also fix tst-statvfs so that it actually fails; as it stood, all it did was return 0 always. Test statfs()' and statvfs()' f_types are the same. Link: https://lore.kernel.org/linux-man/f54kudgblgk643u32tb6at4cd3kkzha6hslahv24szs4raroaz@ogivjbfdaqtb/t/#u Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Add IP_PROTOCOL from Linux 6.4 to bits/in.hJoseph Myers2023-08-011-0/+1
| | | | | | | Linux 6.4 adds a new constant IP_PROTOCOL; add it to glibc's bits/in.h. Tested for x86_64.
* Update kernel version to 6.4 in header constant testsJoseph Myers2023-08-013-4/+4
| | | | | | | | | This patch updates the kernel version in the tests tst-mman-consts.py, tst-mount-consts.py and tst-pidfd-consts.py to 6.4. (There are no new constants covered by these tests in 6.4 that need any other header changes.) Tested with build-many-glibcs.py.
* PowerPC: Influence cpu/arch hwcap features via GLIBC_TUNABLESMahesh Bodapati2023-08-014-3/+390
| | | | | | | | | | | This patch enables the option to influence hwcaps used by PowerPC. The environment variable, GLIBC_TUNABLES=glibc.cpu.hwcaps=-xxx,yyy,-zzz...., can be used to enable CPU/ARCH feature yyy, disable CPU/ARCH feature xxx and zzz, where the feature name is case-sensitive and has to match the ones mentioned in the file{sysdeps/powerpc/dl-procinfo.c}. Note that the hwcap tunables only used in the IFUNC selection. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* linux: Fix i686 with gcc6Adhemerval Zanella Netto2023-07-261-0/+9
| | | | | | | | | | | | On __convert_scm_timestamps GCC 6 issues an warning that tvts[0]/tvts[1] maybe be used uninitialized, however it would be used if type is set to a value different than 0 (done by either COMPAT_SO_TIMESTAMP_OLD or COMPAT_SO_TIMESTAMPNS_OLD) which will fallthrough to 'common' label. It does not show with gcc 7 or more recent versions. Checked on i686-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Include sys/rseq.h in tst-rseq-disable.cStefan Liebler2023-07-251-0/+1
| | | | | | | | | | | Starting with commit 2c6b4b272e6b4d07303af25709051c3e96288f2d "nptl: Unconditionally use a 32-byte rseq area", the testcase misc/tst-rseq-disable is UNSUPPORTED as RSEQ_SIG is not defined. The mentioned commit removes inclusion of sys/rseq.h in nptl/descr.h. Thus just include sys/rseq.h in the tst-rseq-disable.c as also done in tst-rseq.c and tst-rseq-nptl.c. Reviewed-by: Florian Weimer <fweimer@redhat.com>
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