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* elf: Implement DT_AUDIT, DT_DEPAUDIT support [BZ #24943]Florian Weimer2020-04-031-1/+4
| | | | | | | binutils ld has supported --audit, --depaudit for a long time, only support in glibc has been missing. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Add NEWS entry for CVE-2020-1751 (bug 25423)Aurelien Jarno2020-03-241-0/+3
| | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Add NEWS entry for CVE-2020-1752 (bug 25414)Aurelien Jarno2020-03-191-0/+3
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* Add NEWS entry for CVE-2020-10029 (bug 25487)Aurelien Jarno2020-03-111-1/+3
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* NEWS: Set fill-column hint to 72Siddhesh Poyarekar2020-02-071-1/+1
| | | | | | | Match up with list-fixed-bugs.py and also with the fact that many email clients default to 72 chars when composing emails. Reviewed-by: Joseph Myers <joseph@codesourcery.com>
* Fix ckb_IQ [BZ #9809]Mike FABIAN2020-02-031-1/+1
| | | | | | Add ckb_IQ to SUPPORTED file. Add ckb_IQ.UTF-8.in collation test file. Mention new ckb_IQ locale in NEWS.
* Open master for 2.32 development glibc-2.31.9000Siddhesh Poyarekar2020-02-011-0/+23
| | | | happy hacking!
* Add bugs fixed in 2.31 in NEWSSiddhesh Poyarekar2020-02-011-2/+77
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* Add note to NEWS about kernel headers dependency on risc-vSiddhesh Poyarekar2020-02-011-1/+2
| | | | | | | | | It was discovered that RISC-V 64-bit still needs kernel headers >= 5.0 to be installed to build correctly: https://gitlab.com/kubu93/toolchains-builder/-/jobs/422726962 Fix up the NEWS item to make that clear.
* Add NEWS entry about 64-bit time_t syscall use on 32-bit targetsSzabolcs Nagy2020-01-311-0/+7
| | | | | | | | | This internal change ideally should not affect the public API or ABI, but there is a widespread use of seccomp sandboxes, even on 32-bit targets, that don't handle new Linux syscall usage well, so it's worth mentioning in the NEWS. Co-authored-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* Add NEWS entry about the change in handling of PT_GNU_STACK on MIPSDragan Mladjenovic2020-01-231-0/+12
| | | | | | | | | | | | | | The change was introduced in: commit 33bc9efd91de1b14354291fc8ebd5bce96379f12 Author: Dragan Mladjenovic <dmladjenovic@wavecomp.com> Date: Fri Aug 23 16:38:04 2019 +0000 mips: Force RWX stack for hard-float builds that can run on pre-4.8 kernels and probably requires a small explanation. Co-authored-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* Revise NEWS description of changes to gettimeofday etc.Zack Weinberg2020-01-091-25/+38
| | | | | | | | | | | | | | | Mostly English grammar and style improvements. The bullet list is reorganized a little for clarity. The details of exactly which Linux-based ports still report system-wide time zone information from gettimeofday has been removed, as this is not intended to be something people should rely on. Also clarify the deprecation of older SPARC ISAs, based on the fact that “SPARC version 7” is actually the very first version of the SPARC ISA (Sun Microsystems was very fond of letting the marketing department pick version numbers). Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* Drop dependency of dist target on ChangeLogSiddhesh Poyarekar2020-01-091-0/+4
| | | | | | | | | | | | | | We no longer write manual ChangeLog entries since they are auto-generated at release time. Drop dependency of the `make dist` target on the file and document the fact that the latest ChangeLog entries can be read in the highest numbered ChangeLog.N file in ChangeLog.old. The ChangeLog.old/ChangeLog.20 file for 2.31 will thus be generated just before tagging a release. Reviewed-by: Paul Eggert <eggert@cs.ucla.edu> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
* Linux: Use system call tables during buildFlorian Weimer2020-01-021-1/+2
| | | | | | | | | | | | | | | | | | | | | | | Use <arch-syscall.h> instead of <asm/unistd.h> to obtain the system call numbers. A few direct includes of <asm/unistd.h> need to be removed (if the system call numbers are already provided indirectly by <sysdep.h>) or replaced with <sys/syscall.h>. Current Linux headers for alpha define the required system call names, so most of the _NR_* hacks are no longer needed. For the 32-bit arm architecture, eliminate the INTERNAL_SYSCALL_ARM macro, now that we have regular system call names for cacheflush and set_tls. There are more such cleanup opportunities for other architectures, but these cleanups are required to avoid macro redefinition errors during the build. For ia64, it is desirable to use <asm/break.h> directly to obtain the break number for system calls (which is not a system call number itself). This requires replacing __BREAK_SYSCALL with __IA64_BREAK_SYSCALL because the former is defined as an alias in <asm/unistd.h>, but not in <asm/break.h>. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* Update copyright dates not handled by scripts/update-copyrights.Joseph Myers2020-01-011-1/+1
| | | | | | | | | | | | | | | I've updated copyright dates in glibc for 2020. This is the patch for the changes not generated by scripts/update-copyrights and subsequent build / regeneration of generated files. As well as the usual annual updates, mainly dates in --version output (minus libc.texinfo which previously had to be handled manually but is now successfully updated by update-copyrights), there is a fix to sysdeps/unix/sysv/linux/powerpc/bits/termios-c_lflag.h where a typo in the copyright notice meant it failed to be updated automatically. Please remember to include 2020 in the dates for any new files added in future (which means updating any existing uncommitted patches you have that add new files to use the new copyright dates in them).
* Update copyright dates with scripts/update-copyrights.Joseph Myers2020-01-011-1/+1
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* Lazy binding failures during dlopen/dlclose must be fatal [BZ #24304]Florian Weimer2019-11-271-0/+6
| | | | | | | | | | | | | | | | | | | | | If a lazy binding failure happens during the execution of an ELF constructor or destructor, the dynamic loader catches the error and reports it using the dlerror mechanism. This is undesirable because there could be other constructors and destructors that need processing (which are skipped), and the process is in an inconsistent state at this point. Therefore, we have to issue a fatal dynamic loader error error and terminate the process. Note that the _dl_catch_exception in _dl_open is just an inner catch, to roll back some state locally. If called from dlopen, there is still an outer catch, which is why calling _dl_init via call_dl_init and a no-exception is required and cannot be avoiding by moving the _dl_init call directly into _dl_open. _dl_fini does not need changes because it does not install an error handler, so errors are already fatal there. Change-Id: I6b1addfe2e30f50a1781595f046f44173db9491a
* resolv: Implement trust-ad option for /etc/resolv.conf [BZ #20358]Florian Weimer2019-11-271-0/+9
| | | | | | | | | | | | | | | | | This introduces a concept of trusted name servers, for which the AD bit is passed through to applications. For untrusted name servers (the default), the AD bit in responses are cleared, to provide a safe default. This approach is very similar to the one suggested by Pavel Šimerda in <https://bugzilla.redhat.com/show_bug.cgi?id=1164339#c15>. The DNS test framework in support/ is enhanced with support for setting the AD bit in responses. Tested on x86_64-linux-gnu. Change-Id: Ibfe0f7c73ea221c35979842c5c3b6ed486495ccc
* Remove 32 bit sparc v7 supportAdhemerval Zanella2019-11-271-0/+4
| | | | | | | | | | | | | | | | | | The patch is straighforward: - The sparc32 v8 implementations are moved as the generic ones. - A configure test is added to check for either __sparc_v8__ or __sparc_v9__. - The triple names are simplified and sparc implies sparcv8. The idea is to keep support on sparcv8 architectures that does support CAS instructions, such as LEON3/LEON4. Checked on a sparcv9-linux-gnu and sparc64-linux-gnu. Tested-by: Andreas Larsson <andreas@gaisler.com>
* rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC ↵Marcin Kościelnicki2019-11-211-1/+5
| | | | | | | | (CVE-2019-19126) [BZ #25204] The problem was introduced in glibc 2.23, in commit b9eb92ab05204df772eb4929eccd018637c9f3e9 ("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
* Add new locale: mnw_MM (Mon language spoken in Myanmar) [BZ #25139]Talachan Mon2019-11-061-0/+2
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* nptl: Fix niggles with pthread_clockjoin_npMike Crowe2019-11-041-1/+1
| | | | | | | | | | | | | | | | | | | Joseph Myers spotted[1] that 69ca4b54c151cec42ccca5e05790efc1a8206b47 added pthread_clockjoin_np to sysdeps/nptl/pthread.h but not to its hppa-specific equivalent sysdeps/unix/sysv/linux/hppa/pthread.h. Rafal Luzynski spotted[2] typos in the NEWS entry and manual updates too. Florian Weimer spotted[3] that the clockid parameter was not using a reserved identifier in pthread.h. [1] https://sourceware.org/ml/libc-alpha/2019-11/msg00016.html [2] https://sourceware.org/ml/libc-alpha/2019-11/msg00019.html [3] https://sourceware.org/ml/libc-alpha/2019-11/msg00022.html Reviewed-by: Joseph Myers <joseph@codesourcery.com> Reviewed-by: Rafal Luzynski <digitalfreak@lingonborough.com> Reviewed-by: Florian Weimer <fw@deneb.enyo.de>
* nptl: Add pthread_clockjoin_npMike Crowe2019-11-011-0/+4
| | | | | | | | | | | Introduce pthread_clockjoin_np as a version of pthread_timedjoin_np that accepts a clockid_t parameter to indicate which clock the timeout should be measured against. This mirrors the recently-added POSIX-proposed "clock" wait functions. Checked on x86_64-linux-gnu. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Use clock_gettime to implement gettimeofday.Adhemerval Zanella2019-10-301-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Consolidate generic gettimeofday implementation to use clock_gettime. Linux ports that still provide gettimeofday through vDSO are not changed. Remove sysdeps/unix/clock_gettime.c, which implemented clock_gettime using gettimeofday; new OS ports must provide a real implementation of clock_gettime. Rename sysdeps/mach/gettimeofday.c to sysdeps/mach/clock_gettime.c and convert into an implementation of clock_gettime. It only supports CLOCK_REALTIME; Mach does not appear to have any support for monotonic clocks. It uses __host_get_time, which provides at best microsecond resolution. Hurd is currently using sysdeps/posix/clock_getres.c for clock_getres; its output for CLOCK_REALTIME is based on sysconf (_SC_CLK_TCK), and I do not know whether that gives the correct result. Unlike settimeofday, there are no known uses of gettimeofday's vestigial "get time zone" feature that are not bugs. (The per-process timezone support in localtime and friends is unrelated, and the programs that set the kernel's offset between the hardware clock and UTC do not need to read it back.) Therefore, this feature is dummied out. Henceforth, if gettimeofday's "struct timezone" argument is not NULL, it will write zeroes to both fields. Any program that is actually looking at this data will thus think it is running in UTC, which is probably more correct than whatever it was doing before. [__]gettimeofday no longer has any internal callers, so we can now remove its internal prototype and PLT bypass aliases. The __gettimeofday@GLIBC_2.0 export remains, in case it is used by any third-party code. It also allows to simplify the arch-specific implementation on x86 and powerpc to remove the hack to disable the internal route to non iFUNC variant for internal symbol. This patch also fixes a missing optimization on aarch64, powerpc, and x86 where the code used on static build do not use the vDSO. Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, powerpc64-linux-gnu, powerpc-linux-gnu, and aarch64-linux-gnu. Co-authored-by: Zack Weinberg <zackw@panix.com> Reviewed-by: Lukasz Majewski <lukma@denx.de>
* Consolidate and deprecate ftimeZack Weinberg2019-10-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | ftime is an obsolete variation on gettimeofday, offering only millisecond time resolution; it was probably a system call in ooold versions of BSD Unix. For historic reasons, we had three implementations of it. These are all consolidated into time/ftime.c, and then the function is deprecated. For some reason, the implementation of ftime in terms of gettimeofday was rounding rather than truncating microseconds to milliseconds. In all the other places where we use a higher-resolution time function to implement a lower-resolution one, we truncate. ftime is changed to match, just for tidiness' sake. Like gettimeofday, ftime tries to report the time zone, and using that information is always a bug. This patch dummies out the reported timezone information; the timezone and dstflag fields of the returned "struct timeb" will always be zero. Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, powerpc64-linux-gnu, and powerpc-linux-gnu. Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Lukasz Majewski <lukma@denx.de>
* Use clock_settime to implement settimeofday.Zack Weinberg2019-10-301-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unconditionally, on all ports, use clock_settime to implement settimeofday. Remove sysdeps/unix/clock_settime.c, which implemented clock_settime by calling settimeofday; new OS ports must henceforth provide a real implementation of clock_settime. Hurd had a real implementation of settimeofday but not of clock_settime; this patch converts it into an implementation of clock_settime. It only supports CLOCK_REALTIME and microsecond resolution; Hurd/Mach does not appear to have any support for finer-resolution clocks. The vestigial "set time zone" feature of settimeofday complicates the generic settimeofday implementation a little. The only remaining uses of this feature that aren't just bugs, are using it to inform the Linux kernel of the offset between the hardware clock and UTC, on systems where the hardware clock doesn't run in UTC (usually because of dual-booting with Windows). There currently isn't any other way to do this. However, the callers that do this call settimeofday with _only_ the timezone argument non-NULL. Therefore, glibc's new behavior is: callers of settimeofday must supply one and only one of the two arguments. If both arguments are non-NULL, or both arguments are NULL, the call fails and sets errno to EINVAL. When only the timeval argument is supplied, settimeofday calls __clock_settime(CLOCK_REALTIME), same as stime. When only the timezone argument is supplied, settimeofday calls a new internal function called __settimezone. On Linux, only, this function will pass the timezone structure to the settimeofday system call. On all other operating systems, and on Linux architectures that don't define __NR_settimeofday, __settimezone is a stub that always sets errno to ENOSYS and returns -1. The settimeoday syscall is enabled on Linux by the flag COMPAT_32BIT_TIME, which is an option to either 32-bits ABIs or COMPAT builds (defined usually by 64-bit kernels that want to support 32-bit ABIs, such as x86). The idea to future 64-bit time_t only ABIs is to not provide settimeofday syscall. The same semantics are implemented for Linux/Alpha's GLIBC_2.0 compat symbol for settimeofday. There are no longer any internal callers of __settimeofday, so the internal prototype is removed. Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, powerpc64-linux-gnu, powerpc-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Lukasz Majewski <lukma@denx.de>
* Use clock_settime to implement stime; withdraw stime.Zack Weinberg2019-10-301-0/+4
| | | | | | | | | | | | Unconditionally, on all ports, use clock_settime to implement stime, not settimeofday or a direct syscall. Then convert stime into a compatibility symbol and remove its prototype from time.h. Checked on x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, powerpc64-linux-gnu, powerpc-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Lukasz Majewski <lukma@denx.de>
* Prefer https to http for gnu.org and fsf.org URLsPaul Eggert2019-09-071-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
* Add tgmath.h macros for narrowing functions.Joseph Myers2019-08-211-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When adding some of the TS 18661 narrowing functions for glibc 2.28, I deferred adding corresponding <tgmath.h> support because of unresolved questions about the specification for those type-generic macros, especially in relation to _FloatN and _FloatNx types. Those issues are now clarified in the response to Clarification Request 13 to TS 18661-3, and this patch adds the deferred tgmath.h support. As with other tgmath.h macros, there are fairly straightforward implementations based on __builtin_tgmath for GCC 8 and later, which result in exactly the right function being called in each case, and more complicated implementations for GCC 7 and earlier, which generally result in a function being called whose arguments have the right format (i.e. an alias for the right function), but which might not be exactly the function name specified by TS 18661. In one case with older compilers (f32x* macros, where the type _Float64x exists and all the arguments have type _Float32 or _Float32x), there is a further relaxation and the function called may have arguments narrower than the one specified by the TS, but still wide enough to represent the arguments exactly, so the result of the call is unchanged (as this does not affect any case where rounding of integer arguments might be involved). With GCC 6 or before this is inherently unavoidable (but still harmless and not detectable by how the compiled program behaves, unless it redefines the functions in question like the testcases do) because _Float32x and _Float64 are both typedefs for double in that case but the specified semantics result in different functions, with different argument formats, being called for those two argument types. Tests for the new macros are handled through gen-tgmath-tests.py, which deals with the special-case handling for older GCC. Tested as follows: with the full glibc testsuite on x86_64 and x86 (with GCC 6, 7 and 8); with the math/ tests on aarch64 and arm (with GCC 6, 7 and 8); with build-many-glibcs.py (with GCC 6, 7 and 9). * math/tgmath.h [__HAVE_FLOAT128X]: Give error. [(__HAVE_FLOAT64X && !__HAVE_FLOAT128) || (__HAVE_FLOAT128 && !__HAVE_FLOAT64X)]: Likewise. (__TGMATH_2_NARROW_F): Likewise. (__TGMATH_2_NARROW_D): New macro. (__TGMATH_2_NARROW_F16): Likewise. (__TGMATH_2_NARROW_F32): Likewise. (__TGMATH_2_NARROW_F64): Likewise. (__TGMATH_2_NARROW_F32X): Likewise. (__TGMATH_2_NARROW_F64X): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F16): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F32): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F64): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F32X): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (fadd): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (dadd): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (fdiv): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (ddiv): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (fmul): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (dmul): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (fsub): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (dsub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT16] (f16add): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT16] (f16div): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT16] (f16mul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT16] (f16sub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32] (f32add): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32] (f32div): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32] (f32mul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32] (f32sub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64 && (__HAVE_FLOAT64X || __HAVE_FLOAT128)] (f64add): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64 && (__HAVE_FLOAT64X || __HAVE_FLOAT128)] (f64div): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64 && (__HAVE_FLOAT64X || __HAVE_FLOAT128)] (f64mul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64 && (__HAVE_FLOAT64X || __HAVE_FLOAT128)] (f64sub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32X] (f32xadd): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32X] (f32xdiv): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32X] (f32xmul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32X] (f32xsub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64X && (__HAVE_FLOAT128X || __HAVE_FLOAT128)] (f64xadd): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64X && (__HAVE_FLOAT128X || __HAVE_FLOAT128)] (f64xdiv): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64X && (__HAVE_FLOAT128X || __HAVE_FLOAT128)] (f64xmul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64X && (__HAVE_FLOAT128X || __HAVE_FLOAT128)] (f64xsub): Likewise. * math/gen-tgmath-tests.py (Type): Add members non_standard_real_argument_types_list, long_double_type, complex_float64_type and float32x_ext_type. (Type.__init__): Set the new members. (Type.floating_type): Add new argument floatn. (Type.real_floating_type): Likewise. (Type.can_combine_types): Likewise. (Type.combine_types): Likewise. (Type.init_types): Create internal Float32x_ext type. (Tests.__init__): Define Float32x_ext in generated C code. (Tests.add_tests): Handle narrowing functions. (Tests.add_all_tests): Likewise. (Tests.tests_text): Allow variation in mant_dig for narrowing functions with compilers before GCC 8. * math/Makefile (tgmath3-narrow-types): New variable. (tgmath3-narrow-macros): Likewise. (tgmath3-macros): Add $(tgmath3-narrow-macros).
* Make totalorder and totalordermag functions take pointer arguments.Joseph Myers2019-08-151-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The resolution of C floating-point Clarification Request 25 <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2397.htm#dr_25> is that the totalorder and totalordermag functions should take pointer arguments, and this has been adopted in C2X (with const added; note that the integration of this change into C2X is present in the C standard git repository but postdates the most recent public PDF draft). This patch updates glibc accordingly. As a defect resolution, the API is changed unconditionally rather than supporting any sort of TS 18661-1 mode for compilation with the old version of the API. There are compat symbols for existing binaries that pass floating-point arguments directly. As a consequence of changing to pointer arguments, there are no longer type-generic macros in tgmath.h for these functions. Because of the fairly complicated logic for creating libm function aliases and determining the set of aliases to create in a given glibc configuration, rather than duplicating all that in individual source files to create the versioned and compat symbols, the source files for the various versions of totalorder functions are set up to redefine weak_alias before using libm_alias_* macros to create the symbols required. In turn, this requires creating a separate alias for each symbol version pointing to the same implementation (see binutils bug <https://sourceware.org/bugzilla/show_bug.cgi?id=23840>), which is done automatically using __COUNTER__. (As I noted in <https://sourceware.org/ml/libc-alpha/2018-10/msg00631.html>, it might well make sense for glibc's symbol versioning macros to do that alias creation with __COUNTER__ themselves, which would somewhat simplify the logic in the totalorder source files.) It is of course desirable to test the compat symbols. I did this with the generic libm-test machinery, but didn't wish to duplicate the actual tables of test inputs and outputs, and thought it risky to attempt to have a single object file refer to both default and compat versions of the same function in order to test them together. Thus, I created libm-test-compat_totalorder.inc and libm-test-compat_totalordermag.inc which include the generated .c files (with the processed version of those tables of inputs) from the non-compat tests, and added appropriate dependencies. I think this provides sufficient test coverage for the compat symbols without also needing to make the special ldbl-96 and ldbl-128ibm tests (of peculiarities relating to the representations of those formats that can't be covered in the generic tests) run for the compat symbols. Tests of compat symbols need to be internal tests, meaning _ISOMAC is not defined. Making some libm-test tests into internal tests showed up two other issues. GCC diagnoses duplicate macro definitions of __STDC_* macros, including __STDC_WANT_IEC_60559_TYPES_EXT__; I added an appropriate conditional and filed <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91451> for this issue. On ia64, include/setjmp.h ends up getting included indirectly from libm-symbols.h, resulting in conflicting definitions of the STR macro (also defined in libm-test-driver.c); I renamed the macros in include/setjmp.h. (It's arguable that we should have common internal headers used everywhere for stringizing and concatenation macros.) Tested for x86_64 and x86, and with build-many-glibcs.py. * math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT) || __MATH_DECLARING_FLOATN] (totalorder): Take pointer arguments. [__GLIBC_USE (IEC_60559_BFP_EXT) || __MATH_DECLARING_FLOATN] (totalordermag): Likewise. * manual/arith.texi (totalorder): Likewise. (totalorderf): Likewise. (totalorderl): Likewise. (totalorderfN): Likewise. (totalorderfNx): Likewise. (totalordermag): Likewise. (totalordermagf): Likewise. (totalordermagl): Likewise. (totalordermagfN): Likewise. (totalordermagfNx): Likewise. * math/tgmath.h (__TGMATH_BINARY_REAL_RET_ONLY): Remove macro. [__GLIBC_USE (IEC_60559_BFP_EXT)] (totalorder): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (totalordermag): Likewise. * math/Versions (GLIBC_2.31): Add totalorder, totalorderf, totalorderl, totalordermag, totalordermagf, totalordermagl, totalorderf32, totalorderf64, totalorderf32x, totalordermagf32, totalordermagf64, totalordermagf32x, totalorderf64x, totalordermagf64x, totalorderf128 and totalordermagf128. * math/Makefile (libm-test-funcs-noauto): Add compat_totalorder and compat_totalordermag. (libm-test-funcs-compat): New variable. (libm-tests-compat): Likewise. (tests): Do not include compat tests. (tests-internal): Add compat tests. ($(foreach t,$(libm-tests-base), $(objpfx)$(t)-compat_totalorder.o)): Depend on $(objpfx)libm-test-totalorder.c. ($(foreach t,$(libm-tests-base), $(objpfx)$(t)-compat_totalordermag.o): Depend on $(objpfx)libm-test-totalordermag.c. (tgmath3-macros): Remove totalorder and totalordermag. * math/libm-test-compat_totalorder.inc: New file. * math/libm-test-compat_totalordermag.inc: Likewise. * math/libm-test-driver.c (struct test_ff_i_data): Update comment. (RUN_TEST_fpfp_b): New macro. (RUN_TEST_LOOP_fpfp_b): Likewise. * math/libm-test-totalorder.inc (totalorder_test_data): Use TEST_fpfp_b. (totalorder_test): Condition on [!COMPAT_TEST]. (do_test): Likewise. * math/libm-test-totalordermag.inc (totalordermag_test_data): Use TEST_fpfp_b. (totalordermag_test): Condition on [!COMPAT_TEST]. (do_test): Likewise. * math/gen-tgmath-tests.py (Tests.add_all_tests): Remove totalorder and totalordermag. * math/test-tgmath.c (NCALLS): Change to 132. (F(compile_test)): Do not call totalorder or totalordermag. (F(totalorder)): Remove. (F(totalordermag)): Likewise. * include/float.h (__STDC_WANT_IEC_60559_TYPES_EXT__): Do not define if [__STDC_WANT_IEC_60559_TYPES_EXT__]. * include/setjmp.h [!_ISOMAC] (STR_HELPER): Rename to SJSTR_HELPER. [!_ISOMAC] (STR): Rename to SJSTR. Update call to STR_HELPER. [!_ISOMAC] (TEST_SIZE): Update call to STR. [!_ISOMAC] (TEST_ALIGN): Likewise. [!_ISOMAC] (TEST_OFFSET): Likewise. * sysdeps/ieee754/dbl-64/s_totalorder.c: Include <shlib-compat.h> and <first-versions.h>. (__totalorder): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/dbl-64/s_totalordermag.c: Include <shlib-compat.h> and <first-versions.h>. (__totalordermag): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c: Include <shlib-compat.h> and <first-versions.h>. (__totalorder): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c: Include <shlib-compat.h> and <first-versions.h>. (__totalordermag): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/float128/float128_private.h (__totalorder_compatl): New macro. (__totalordermag_compatl): Likewise. * sysdeps/ieee754/flt-32/s_totalorderf.c: Include <shlib-compat.h> and <first-versions.h>. (__totalorderf): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/flt-32/s_totalordermagf.c: Include <shlib-compat.h> and <first-versions.h>. (__totalordermagf): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/ldbl-128/s_totalorderl.c: Include <shlib-compat.h> and <first-versions.h>. (__totalorderl): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/ldbl-128/s_totalordermagl.c: Include <shlib-compat.h> and <first-versions.h>. (__totalordermagl): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/ldbl-128ibm/s_totalorderl.c: Include <shlib-compat.h>. (__totalorderl): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/ldbl-128ibm/s_totalordermagl.c: Include <shlib-compat.h>. (__totalordermagl): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/ldbl-96/s_totalorderl.c: Include <shlib-compat.h> and <first-versions.h>. (__totalorderl): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/ldbl-96/s_totalordermagl.c: Include <shlib-compat.h> and <first-versions.h>. (__totalordermagl): Take pointer arguments. Add symbol versions and compat symbols. * sysdeps/ieee754/ldbl-opt/nldbl-totalorder.c (totalorderl): Take pointer arguments. * sysdeps/ieee754/ldbl-opt/nldbl-totalordermag.c (totalordermagl): Likewise. * sysdeps/ieee754/ldbl-128ibm/test-totalorderl-ldbl-128ibm.c (do_test): Update calls to totalorderl and totalordermagl. * sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c (do_test): Update calls to totalorderl and totalordermagl. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/csky/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* Add feature test macro _ISOC2X_SOURCE.Joseph Myers2019-08-131-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch starts preparation for C2X support in glibc headers by adding a feature test macro _ISOC2X_SOURCE and corresponding __GLIBC_USE (ISOC2X). (I chose to use the newer __GLIBC_USE style for this rather than the older __USE_* macros tested with #ifdef.) As with other such macros, C2X features are also enabled by compiling for a standard newer than C17, or by using _GNU_SOURCE. This patch does not itself enable anything new in the headers for C2X; that is to be done in followup patches. (For example, most of the TS 18661-1 functions should be declared for C2X without any __STDC_WANT_IEC_60559_BFP_EXT__ being needed, but the ones that 18661-1 adds to Annex F because of their close relation to IEEE 754 formats do still need the WANT macro in C2X.) Once C2X becomes an actual standard we'll presumably move to using the actual year in the feature test macro and __GLIBC_USE, with some period when both macro spellings are accepted, as was done with _ISOC9X_SOURCE. Tested for x86_64. * include/features.h (_ISOC2X_SOURCE): New feature test macro. Undefine and define to 1 if [_GNU_SOURCE]. (__GLIBC_USE_ISOC2X): New macro. Undefine and redefine depending on [_ISOC2X_SOURCE] and [__STDC_VERSION__ > 201710L]. (__USE_ISOC11): Also define to 1 if [_ISOC2X_SOURCE]. (__USE_ISOC99): Likewise. (__USE_ISOC95): Likewise. * manual/creature.texi (_ISOC2X_SOURCE): Document.
* Open master for 2.31 development. glibc-2.30.9000Carlos O'Donell2019-08-011-0/+24
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* Update install and NEWS for 2.30 release.Carlos O'Donell2019-08-011-2/+103
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* Add NEWS entry about the new AArch64 IFUNC resolver call ABISzabolcs Nagy2019-07-221-0/+4
| | | | | | | | | | | | The new IFUNC resolver call ABI was introduced in commit 2b8a3c86e7606cf1b0a997dad8af2d45ae8989c3 Commit: Szabolcs Nagy <szabolcs.nagy@arm.com> CommitDate: 2019-07-04 11:13:32 +0100 aarch64: new ifunc resolver ABI See the commit log and the comments in sys/ifunc.h for details.
* Update NEWS for new _clockwait and _clocklock functionsMike Crowe2019-07-121-0/+9
| | | | | | | | * NEWS: Mention recently-added pthread_cond_clockwait, pthread_rwlock_clockrdlock, pthread_rwlock_clockwrlock and sem_clockwait functions. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* NEWS: clarify copy_file_rangeDJ Delorie2019-07-081-3/+5
| | | | Minor tweak to clarify what applications must do.
* ld.so: Support moving versioned symbols between sonames [BZ #24741]Florian Weimer2019-06-281-0/+6
| | | | | | | | | | | | | | | | | | | This change should be fully backwards-compatible because the old code aborted the load if a soname mismatch was encountered (instead of searching further for a matching symbol). This means that no different symbols are found. The soname check was explicitly disabled for the skip_map != NULL case. However, this only happens with dl(v)sym and RTLD_NEXT, and those lookups do not come with a verneed entry that could be used for the check. The error check was already explicitly disabled for the skip_map != NULL case, that is, when dl(v)sym was called with RTLD_NEXT. But _dl_vsym always sets filename in the struct r_found_version argument to NULL, so the check was not active anyway. This means that symbol lookup results for the skip_map != NULL case do not change, either.
* io: Remove copy_file_range emulation [BZ #24744]Florian Weimer2019-06-281-0/+8
| | | | | | | | | | The kernel is evolving this interface (e.g., removal of the restriction on cross-device copies), and keeping up with that is difficult. Applications which need the function should run kernels which support the system call instead of relying on the imperfect glibc emulation. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Linux: Deprecate <sys/sysctl.h> and sysctlFlorian Weimer2019-06-121-0/+5
| | | | | | | | | | Now that there are no internal users of __sysctl left, it is possible to add an unconditional deprecation warning to <sys/sysctl.h>. To avoid a test failure due this warning in check-install-headers, skip the test for sys/sysctl.h. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Linux: Add getdents64 system callFlorian Weimer2019-06-071-1/+1
| | | | | | | | | | | No 32-bit system call wrapper is added because the interface is problematic because it cannot deal with 64-bit inode numbers and 64-bit directory hashes. A future commit will deprecate the undocumented getdirentries and getdirentries64 functions. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* arm: Remove ioperm/iopl/inb/inw/inl/outb/outw/outl supportFlorian Weimer2019-06-011-0/+3
| | | | | | | | Linux only supports the required ISA sysctls on StrongARM devices, which are armv4 and no longer tested during glibc development and probably bit-rotted by this point. (No reported test results, and the last discussion of armv4 support was in the glibc 2.19 release notes.)
* Remove support for PowerPC SPE extension (powerpc*-*-*gnuspe*).Zack Weinberg2019-05-221-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC 9 dropped support for the SPE extensions to PowerPC, which means powerpc*-*-*gnuspe* configurations are no longer buildable with that compiler. This ISA extension was peculiar to the “e500” line of embedded PowerPC chips, which, as far as I can tell, are no longer being manufactured, so I think we should follow suit. This patch was developed by grepping for “e500”, “__SPE__”, and “__NO_FPRS__”, and may not eliminate every vestige of SPE support. Most uses of __NO_FPRS__ are left alone, as they are relevant to normal embedded PowerPC with soft-float. * sysdeps/powerpc/preconfigure: Error out on powerpc-*-*gnuspe* host type. * scripts/build-many-glibcs.py: Remove powerpc-*-linux-gnuspe and powerpc-*-linux-gnuspe-e500v1 from list of build configurations. * sysdeps/powerpc/powerpc32/e500: Recursively delete. * sysdeps/unix/sysv/linux/powerpc/powerpc32/e500: Recursively delete. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/context-e500.h: Delete. * sysdeps/powerpc/fpu_control.h: Remove SPE variant. Issue an #error if used with a compiler in SPE-float mode. * sysdeps/powerpc/powerpc32/__longjmp_common.S * sysdeps/powerpc/powerpc32/setjmp_common.S * sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/getcontext.S * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/setcontext.S * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/swapcontext.S * sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S: Remove code to preserve SPE register state. * sysdeps/unix/sysv/linux/powerpc/elision-lock.c * sysdeps/unix/sysv/linux/powerpc/elision-trylock.c * sysdeps/unix/sysv/linux/powerpc/elision-unlock.c Remove __SPE__ ifndefs.
* Linux: Add the tgkill functionFlorian Weimer2019-05-141-1/+1
| | | | | | | | | The tgkill function is sometimes used in crash handlers. <bits/signal_ext.h> follows the same approach as <bits/unistd_ext.h> (which was added for the gettid system call wrapper). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Bug 24535: Update to Unicode 12.1.0Mike FABIAN2019-05-131-2/+2
| | | | | | | | | | | | | | | | | | | Unicode 12.1.0 Support: Character encoding, character type info, and transliteration tables are all updated to Unicode 12.1.0, using the generator scripts contributed by Mike FABIAN (Red Hat). Some info about the number of characters added or changed: Total added characters in newly generated CHARMAP: 1 added: <U32FF> /xe3/x8b/xbf SQUARE ERA NAME REIWA Total added characters in newly generated WIDTH: 1 added: <U32FF> 2 : eaw=W category=So bidi=L name=SQUARE ERA NAME REIWA graph: Added 1 characters in new ctype which were not in old ctype graph: Added: ㋿ U+32FF SQUARE ERA NAME REIWA print: Added 1 characters in new ctype which were not in old ctype print: Added: ㋿ U+32FF SQUARE ERA NAME REIWA punct: Added 1 characters in new ctype which were not in old ctype punct: Added: ㋿ U+32FF SQUARE ERA NAME REIWA
* misc: Add twalk_r functionFlorian Weimer2019-05-021-0/+4
| | | | | | | | | The twalk function is very difficult to use in a multi-threaded program because there is no way to pass external state to the iterator function. Reviewed-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Extend BIND_NOW to installed programs with --enable-bind-nowFlorian Weimer2019-04-251-0/+3
| | | | | | | | Commit 2d6ab5df3b675e96ee587ae6a8c2ce004c6b1ba9 ("Document and fix --enable-bind-now [BZ #21015]") extended BIND_NOW to all installed shared objects. This change also covers installed programs. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Fix NEWS entry from 9bf8e29ca136Adhemerval Zanella2019-04-211-6/+6
| | | | | * NEWS: Move memory allocation changes of BZ#23741 from 2.29 to 2.30 notes.
* malloc: make malloc fail with requests larger than PTRDIFF_MAX (BZ#23741)Adhemerval Zanella2019-04-181-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As discussed previously on libc-alpha [1], this patch follows up the idea and add both the __attribute_alloc_size__ on malloc functions (malloc, calloc, realloc, reallocarray, valloc, pvalloc, and memalign) and limit maximum requested allocation size to up PTRDIFF_MAX (taking into consideration internal padding and alignment). This aligns glibc with gcc expected size defined by default warning -Walloc-size-larger-than value which warns for allocation larger than PTRDIFF_MAX. It also aligns with gcc expectation regarding libc and expected size, such as described in PR#67999 [2] and previously discussed ISO C11 issues [3] on libc-alpha. From the RFC thread [4] and previous discussion, it seems that consensus is only to limit such requested size for malloc functions, not the system allocation one (mmap, sbrk, etc.). The implementation changes checked_request2size to check for both overflow and maximum object size up to PTRDIFF_MAX. No additional checks are done on sysmalloc, so it can still issue mmap with values larger than PTRDIFF_T depending on the requested size. The __attribute_alloc_size__ is for functions that return a pointer only, which means it cannot be applied to posix_memalign (see remarks in GCC PR#87683 [5]). The runtimes checks to limit maximum requested allocation size does applies to posix_memalign. Checked on x86_64-linux-gnu and i686-linux-gnu. [1] https://sourceware.org/ml/libc-alpha/2018-11/msg00223.html [2] https://gcc.gnu.org/bugzilla//show_bug.cgi?id=67999 [3] https://sourceware.org/ml/libc-alpha/2011-12/msg00066.html [4] https://sourceware.org/ml/libc-alpha/2018-11/msg00224.html [5] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87683 [BZ #23741] * malloc/hooks.c (malloc_check, realloc_check): Use __builtin_add_overflow on overflow check and adapt to checked_request2size change. * malloc/malloc.c (__libc_malloc, __libc_realloc, _mid_memalign, __libc_pvalloc, __libc_calloc, _int_memalign): Limit maximum allocation size to PTRDIFF_MAX. (REQUEST_OUT_OF_RANGE): Remove macro. (checked_request2size): Change to inline function and limit maximum requested size to PTRDIFF_MAX. (__libc_malloc, __libc_realloc, _int_malloc, _int_memalign): Limit maximum allocation size to PTRDIFF_MAX. (_mid_memalign): Use _int_memalign call for overflow check. (__libc_pvalloc): Use __builtin_add_overflow on overflow check. (__libc_calloc): Use __builtin_mul_overflow for overflow check and limit maximum requested size to PTRDIFF_MAX. * malloc/malloc.h (malloc, calloc, realloc, reallocarray, memalign, valloc, pvalloc): Add __attribute_alloc_size__. * stdlib/stdlib.h (malloc, realloc, reallocarray, valloc): Likewise. * malloc/tst-malloc-too-large.c (do_test): Add check for allocation larger than PTRDIFF_MAX. * malloc/tst-memalign.c (do_test): Disable -Walloc-size-larger-than= around tests of malloc with negative sizes. * malloc/tst-posix_memalign.c (do_test): Likewise. * malloc/tst-pvalloc.c (do_test): Likewise. * malloc/tst-valloc.c (do_test): Likewise. * malloc/tst-reallocarray.c (do_test): Replace call to reallocarray with resulting size allocation larger than PTRDIFF_MAX with reallocarray_nowarn. (reallocarray_nowarn): New function. * NEWS: Mention the malloc function semantic change.
* resolv: Remove RES_INSECURE1, RES_INSECURE2Florian Weimer2019-04-081-0/+3
| | | | Always perform the associated security checks.
* resolv: Remove support for RES_USE_INET6 and the inet6 optionFlorian Weimer2019-04-081-0/+3
| | | | | | | | | This functionality was deprecated in glibc 2.25. This commit only includes the core changes to remove the functionality. It does not remove the RES_USE_INET6 handling in the individual NSS service modules and the res_use_inet6 function. These changes will happen in future commits.
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-11 12:36:30 +0000