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* Increase some test timeouts.Joseph Myers2017-01-057-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch increases timeouts on some tests I've observed timing out. elf/tst-tls13 and iconvdata/tst-loading both dynamically load many objects and so are slow when testing over NFS. They had timeouts set from before the default changed from 2 to 20 seconds; this patch removes those old settings, so effectively increasing the timeout to 20 seconds (from 3 and 10 seconds respectively). malloc/tst-malloc-thread-fail.c and malloc/tst-mallocfork2.c are slow on slow systems and so I set a fairly arbitrary 100 second timeout, which seems to suffice on the system where I saw them timing out. nss/tst-cancel-getpwuid_r.c and nss/tst-nss-getpwent.c are slow on systems with a large passwd file; I set timeouts that empirically worked for me. (It seems tst-cancel-getpwuid_r.c is hitting the 100000 getpwuid_r call limit in my testing, with each call taking a bit over 0.007 seconds, so 700 seconds for the test.) * elf/tst-tls13.c (TIMEOUT): Remove. * iconvdata/tst-loading.c (TIMEOUT): Likewise. * malloc/tst-malloc-thread-fail.c (TIMEOUT): Increase to 100. * malloc/tst-mallocfork2.c (TIMEOUT): Define to 100. * nss/tst-cancel-getpwuid_r.c (TIMEOUT): Define to 900. * nss/tst-nss-getpwent.c (TIMEOUT): Define to 300.
* Fix MIPS n64 readahead (bug 21026).Joseph Myers2017-01-052-0/+8
| | | | | | | | | | | | | | | | As noted in bug 20126, MIPS n64 uses an incorrect implementation of readahead intended for 32-bit systems. This patch adds a syscalls.list entry to fix this. An updated version of the consolidation patch <https://sourceware.org/ml/libc-alpha/2016-09/msg00527.html> could remove this syscalls.list entry again. Tested with compilation (only) for mips64; the nature of the syscall doesn't allow for a glibc test to detect this issue. [BZ #21026] * sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list (readahead): New syscall entry.
* Fix string/tester.c for GCC 7 -Wstringop-overflow=.Joseph Myers2017-01-042-0/+60
| | | | | | | | | | | | | | | GCC 7 has a -Wstringop-overflow= warning that includes warning for strncat with a size specified that is larger than the size of the buffer (which is dubious usage, but valid at runtime if in fact there isn't an overflow with the particular buffer contents present). string/tester.c tests such cases; this patch arranges for this warning to be ignored around relevant strncat calls. Tested compilation for aarch64 (GCC mainline) with build-many-glibcs.py; did execution testing for x86_64 (GCC 5). * string/tester.c (test_strncat): Disable -Wstringop-overflow= around tests of strncat with large sizes.
* Fix malloc/ tests for GCC 7 -Walloc-size-larger-than=.Joseph Myers2017-01-044-0/+62
| | | | | | | | | | | | | | | | | | | | | GCC 7 has a -Walloc-size-larger-than= warning for allocations of half the address space or more. This causes errors building glibc tests that deliberately test failure of very large allocations. This patch arranges for this warning to be ignored around the problematic function calls. Tested compilation for aarch64 (GCC mainline) with build-many-glibcs.py; did execution testing for x86_64 (GCC 5). * malloc/tst-malloc.c: Include <libc-internal.h>. (do_test): Disable -Walloc-size-larger-than= around tests of malloc with negative sizes. * malloc/tst-mcheck.c: Include <libc-internal.h>. (do_test): Disable -Walloc-size-larger-than= around tests of malloc and realloc with negative sizes. * malloc/tst-realloc.c: Include <libc-internal.h>. (do_test): Disable -Walloc-size-larger-than= around tests of realloc with negative sizes.
* Update libm-test XFAILs for ibm128 format.Joseph Myers2017-01-044-12945/+12945
| | | | | | | | | | | | | | | | | | | | | | | | This patch cleans up and updates the libm-test XFAILs for the ibm128 format. More of them are changed to use a new ibm128-libgcc conditional, to reflect that they are not in fact needed if you've patched libgcc to fix the known issues (at substantial performance cost). Many additional XFAILs are added for tests that fail with unpatched libgcc (most but not all of them xfail-rounding). Note that further such fixes will be needed for test-ldouble actually to pass with default libgcc (in particular, XFAILs for pow tests and for various affected tests directly embedded in libm-test.inc). With patched libgcc, there may be a few XFAILs needed but the results are already substantially clean apart from a few ulps differences. Tested for powerpc. * math/libm-test.inc (TEST_COND_ibm128_libgcc): New macro. (init_max_error) [TEST_COND_ibm128]: Increase maximum error allowed to 16 ulps. * math/auto-libm-test-in: Change most XFAILs for ibm128 to use ibm128-libgcc. XFAIL more tests for ibm128-libgcc. * math/auto-libm-test-out: Regenerated.
* Move wrappers to libm-compat-calls-autoGabriel F. T. Gomes2017-01-04191-66/+474
| | | | | | | | | | This commit moves one step towards the deprecation of wrappers that use _LIB_VERSION / matherr / __kernel_standard functionality, by adding the suffix '_compat' to their filenames and adjusting Makefiles and #includes accordingly. New template wrappers that do not use such functionality will be added by future patches and will be first used by the float128 wrappers.
* Fix MicroBlaze bits/setjmp.h for C++.Joseph Myers2017-01-042-1/+4
| | | | | | | | | | | | | | | For MicroBlaze, setjmp/check-installed-headers-cxx fails with: ../setjmp/setjmp.h:34:8: error: '__jmp_buf_tag' has a field '__jmp_buf_tag::__jmpbuf' whose type depends on the type '<unnamed struct>' which has no linkage [-Werror=subobject-linkage] This patch fixes this in the same way as for some other architectures: the struct used for the internal __jmp_buf type is given the tag __jmp_buf_internal_tag. Tested (compilation tests) with build-many-glibcs.py. * sysdeps/microblaze/bits/setjmp.h (__jmp_buf): Give struct tag __jmp_buf_internal_tag.
* Make MIPS soft-fp preserve NaN payloads for NAN2008.Joseph Myers2017-01-043-2/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | This corresponds to a patch applied to libgcc. In glibc it doesn't actually affect much (only fma, I think). The MIPS sfp-machine.h files have an _FP_CHOOSENAN implementation which emulates hardware semantics of not preserving signaling NaN payloads for an operation with two NaN arguments (although that doesn't suffice to avoid sNaN payload preservation in any case with just one NaN argument). However, those are only hardware semantics in the legacy NaN case; in the NAN2008 case, the architecture documentation says hardware preserves payloads in such cases. Furthermore, this implementation assumes legacy NaN semantics, so in the NAN2008 case the implementation actually has the effect of preserving sNaN payloads but not preserving qNaN payloads, when both should be preserved. This patch fixes the code just to copy from the first argument. Tested for mips64 soft-float. * sysdeps/mips/mips32/sfp-machine.h (_FP_CHOOSENAN): Always preserve NaN payload if [__mips_nan2008]. * sysdeps/mips/mips64/sfp-machine.h (_FP_CHOOSENAN): Likewise.
* Fix MicroBlaze __backtrace get_frame_size namespace (bug 21022).Joseph Myers2017-01-042-1/+6
| | | | | | | | | | | | Many linknamespace tests fail for MicroBlaze because __backtrace (as brought in by libc_fatal.c) uses an inline function get_frame_size which is not declared static. This patch fixes it to be declared static. Tested (compilation tests) with build-many-glibcs.py. [BZ #21022] * sysdeps/microblaze/backtrace.c (get_frame_size): Make static.
* Update i386 libm-test-ulps.Joseph Myers2017-01-032-4/+8
| | | | | | | | | | When testing changes to i386 libm functions (that are shadowed for i686 builds by i686 versions) recently, I saw that the plain i386 libm-test-ulps (as opposed to the i686 multiarch version) needed updating for tests that had been added since it was last updated. This patch updates it accordingly. * sysdeps/i386/fpu/libm-test-ulps: Update.
* Remove duplicate strcat implementationsAdhemerval Zanella2017-01-036-62/+12
| | | | | | | | | | | | | | | | | Since commit 6e46de42fe16 default strcat implementation is essentially the same for specialized ia64 and powerpc ones. This patch removes the redundant implementation and adjust powerpc64 ifunc code to use the default one. Checked on powerpc32-linux-gnu (default and power4) and ia64-linux build and on powerpc64le-linux-gnu. * sysdeps/ia64/strcat.c: Remove file. * sysdeps/powerpc/strcat.c: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c: Use default C implementation. * sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c: Likewise.
* powerpc: Fix write-after-destroy in lock elision [BZ #20822]Tulio Magno Quites Machado Filho2017-01-034-12/+33
| | | | | | The update of *adapt_count after the release of the lock causes a race condition when thread A unlocks, thread B continues and destroys the mutex, and thread A writes to *adapt_count.
* Fix math/test-fenvinline for no-exceptions configurations.Joseph Myers2017-01-032-5/+13
| | | | | | | | | | | | | | | This patch fixes math/test-fenvinline.c to stop it failing in no-exceptions configurations (where some exception macros are defined but may not be supported at runtime). The relevant parts of the test are disabled in that case; some parts can still run (and the rounding mode tests are written in a way such that they work even if the rounding modes aren't supported). Tested for mips64 soft-float, and for x86_64 to make sure the tests still run when the exceptions are supported. * math/test-fenvinline.c (do_test): Disable tests of raised exceptions if !EXCEPTION_TESTS (FLOAT).
* Fix x86 strncat optimized implementation for large sizesAdhemerval Zanella2017-01-034-0/+29
| | | | | | | | | | | | | | | | | | | | | | Similar to BZ#19387, BZ#21014, and BZ#20971, both x86 sse2 strncat optimized assembly implementations do not handle the size overflow correctly. The x86_64 one is in fact an issue with strcpy-sse2-unaligned, but that is triggered also with strncat optimized implementation. This patch uses a similar strategy used on 3daef2c8ee4df2, where saturared math is used for overflow case. Checked on x86_64-linux-gnu and i686-linux-gnu. It fixes BZ #19390. [BZ #19390] * string/test-strncat.c (test_main): Add tests with SIZE_MAX as maximum string size. * sysdeps/i386/i686/multiarch/strcat-sse2.S (STRCAT): Avoid overflow in pointer addition. * sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S (STRCPY): Likewise.
* Fix elf/tst-ldconfig-X for cross testing.Joseph Myers2017-01-032-1/+7
| | | | | | | | | | | | | elf/Makefile passes arguments to tst-ldconfig-X.sh that are different from what it expects, so resulting in the test failing in cross testing. This patch corrects the arguments passed (the script itself has correct logic for cross testing, it's just the Makefile that's wrong). Tested for powerpc (cross testing) and for x86_64 (native testing). * elf/Makefile ($(objpfx)tst-ldconfig-X.out): Correct arguments passed to tst-ldconfig-X.sh.
* Fix up tabs/spaces mismatchesMartin Galvan2017-01-032-8/+12
| | | | | | | | | | Mixing them up breaks the gdb pretty printer tests. ChangeLog: 2017-01-02 Martin Galvan <martingalvan@sourceware.org> * nptl/nptl-printers.py: Fix tabs/spaces mismatches.
* Fix MIPS n32 lseek, lseek64 (bug 21019).Joseph Myers2017-01-024-0/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lseek consolidation broke lseek64 for MIPS n32, so resulting in io/test-lfs failing with an incorrect return from ftello64. This configuration uses the lseek syscall with a 64-bit return value; as the C syscall macros return long, they cannot be used in this case and so an assembly implementation is needed; accordingly, this patch adds lseek64 back to syscalls.list for this configuration. lseek was also broken, truncating the result without checking for overflow. lseek however was already broken before the consolidation; it aliased lseek64 so would return an out-of-range value, resulting in architecturally undefined behavior in the caller if it tried to use a non-sign-extended value with a 32-bit instruction. This patch adds a custom lseek implementation in C for n32, which calls __lseek64 to get the 64-bit value then checks for overflow. Because the prior lseek breakage did not show in test results, and the lseek64 breakage showed only indirectly through tests of ftello64, test coverage was clearly inadequate. This patch extends io/test-lfs.c to test the lseek64 return value (at a point where it has already seeked over 2GB into a file), and then to test the lseek return value (with the latter's expectations depending on whether off_t is smaller than off64_t). Tested for mips64 n32. Also tested test-lfs for x86_64 and x86, where as expected it passes. [BZ #21019] * sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list (lseek64): New syscall entry. * sysdeps/unix/sysv/linux/mips/mips64/n32/lseek.c: New file. * io/test-lfs.c (do_test): Test offset returned from lseek64 and lseek.
* Add build-many-glibcs.py powerpc-linux-gnu-power4 build.Joseph Myers2017-01-022-1/+9
| | | | | | | | | | | | The 32-bit powerpc configurations in build-many-glibcs.py were failing to cover the powerpc32 multiarch code at all, because that code is only built for power4 and above configurations. This patch adds a 32-bit power4 configuration so that at least some of that multiarch code gets build-tested. (This is preparation for reviewing the w_* file renaming, which affects such powerpc32 multiarch files.) * scripts/build-many-glibcs.py (Context.add_all_configs): Add power4 glibc for powerpc-linux-gnu.
* Fix test-sysvsem on some platformsAdhemerval Zanella2017-01-022-1/+13
| | | | | | | | | The command IPC_STAT of semctl expects an union semun in its fourth argument instead of struct semid_ds *. This can cause failures on powerpc32-linux-gnu. Checked on x86_64-linux-gnu, i686-linux-gnu, and powerpc32-linux-gnu (qemu system emulation).
* Fix math/test-nearbyint-except for no-exceptions configurations.Joseph Myers2017-01-022-1/+16
| | | | | | | | | | | | | | | | | | | The test math/test-nearbyint-except conditions some of its tests on an EXCEPTION_TESTS call, not not all that need such a condition. This patch fixes it to use such a conditional for all its tests and to return 77 (UNSUPPORTED) if none of the floating-point types tested support exceptions. Tested for mips64 soft float (where the test previously failed and is now UNSUPPORTED); also tested for x86_64 to make sure the test still PASSes in exceptions-supported cases. * math/test-nearbyint-except.c: Include <stdbool.h>. (any_supported): New variable. (TEST_FUNC): Return early if !EXCEPTION_TESTS (FLOAT). Otherwise set any_supported. (do_test): Return 77 if no floating-point type supported exceptions.
* Correct MIPS math-tests.h condition for sNaN payload preservation.Joseph Myers2017-01-022-1/+6
| | | | | | | | | | | | | | | | | | | | | | Testing for MIPS soft float shows that the issue with NaN payload preservation applies to soft float as well as hard float: the sfp-machine.h emulates hardware non-preservation semantics, although only for the case of two NaN arguments. This patch duly changes the MIPS math-tests.h to expect such non-preservation for soft float as well as hard float. The issue in the NAN2008 case for which I posted <https://gcc.gnu.org/ml/gcc-patches/2017-01/msg00034.html>, of sNaN payloads being preserved but qNaN payloads not being preserved, is not currently an issue for glibc tests because we don't have any tests that check for qNaN payloads being preserved by arithmetic, so a simple __mips_nan2008 conditional suffices without needing compiler version checks in the __mips_nan2008 case. Tested for mips64 soft float. * sysdeps/mips/math-tests.h (SNAN_TESTS_PRESERVE_PAYLOAD): Do not condition on [__mips_hard_float].
* Fix i686 memchr for large input sizesAdhemerval Zanella2017-01-023-3/+22
| | | | | | | | | | | | | | | | | | | Similar to BZ#19387 and BZ#20971, both i686 memchr optimized assembly implementations (memchr-sse2-bsf and memchr-sse2) do not handle the size overflow correctly. It is shown by the new tests added by commit 3daef2c8ee4df29, where both implementation fails with size as SIZE_MAX. This patch uses a similar strategy used on 3daef2c8ee4df2, where saturared math is used for overflow case. Checked on i686-linux-gnu. [BZ #21014] * sysdeps/i386/i686/multiarch/memchr-sse2-bsf.S (MEMCHR): Avoid overflow in pointer addition. * sysdeps/i386/i686/multiarch/memchr-sse2.S (MEMCHR): Likewise.
* Fix pthread_cond_t on sparc for new condvar.Torvald Riegel2017-01-022-8/+26
| | | | | * sysdeps/sparc/nptl/bits/pthreadtypes.h (pthread_cond_t): Adapt to new condvar.
* Make build-many-glibcs.py use binutils 2.28 branch by default.Joseph Myers2017-01-022-1/+6
| | | | | | | | Now that a release branch exists for binutils 2.28, this patch makes build-many-glibcs.py use that by default in place of 2.27. * scripts/build-many-glibcs.py (Context.checkout): Default binutils version to 2.28 branch.
* support: struct netent portability fix for support_format_netentFlorian Weimer2017-01-012-1/+8
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* support: Use %td for pointer difference in xwriteFlorian Weimer2017-01-012-2/+6
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* malloc: Run tunables tests only if tunables are enabledFlorian Weimer2017-01-012-2/+12
| | | | | Otherwise, the environment variable will not have any effect and the test will fail.
* Update config.guess and config.sub to current versions.Joseph Myers2017-01-013-7/+10
| | | | | * scripts/config.guess: Update to version 2017-01-01. * scripts/config.sub: Update to version 2017-01-01.
* Update copyright dates not handled by scripts/update-copyrights.Joseph Myers2017-01-0128-27/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I've updated copyright dates in glibc for 2017. This is the patch for the changes not generated by scripts/update-copyrights and subsequent build / regeneration of generated files. Please remember to include 2017 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). * NEWS: Update copyright dates. * catgets/gencat.c (print_version): Likewise. * csu/version.c (banner): Likewise. * debug/catchsegv.sh: Likewise. * debug/pcprofiledump.c (print_version): Likewise. * debug/xtrace.sh (do_version): Likewise. * elf/ldconfig.c (print_version): Likewise. * elf/ldd.bash.in: Likewise. * elf/pldd.c (print_version): Likewise. * elf/sotruss.sh: Likewise. * elf/sprof.c (print_version): Likewise. * iconv/iconv_prog.c (print_version): Likewise. * iconv/iconvconfig.c (print_version): Likewise. * locale/programs/locale.c (print_version): Likewise. * locale/programs/localedef.c (print_version): Likewise. * login/programs/pt_chown.c (print_version): Likewise. * malloc/memusage.sh (do_version): Likewise. * malloc/memusagestat.c (print_version): Likewise. * malloc/mtrace.pl: Likewise. * manual/libc.texinfo: Likewise. * nptl/version.c (banner): Likewise. * nscd/nscd.c (print_version): Likewise. * nss/getent.c (print_version): Likewise. * nss/makedb.c (print_version): Likewise. * posix/getconf.c (main): Likewise. * scripts/test-installation.pl: Likewise. * sysdeps/unix/sysv/linux/lddlibc4.c (main): Likewise.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2017-01-019374-9371/+9389
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* Update DNS RR type definitions [BZ #20593]Florian Weimer2016-12-315-101/+270
| | | | | This commit includes a new script which allows generating parts of the header files from IANA DNS parameters protocol registry.
* CVE-2015-5180: resolv: Fix crash with internal QTYPE [BZ #18784]Florian Weimer2016-12-318-8/+220
| | | | | Also rename T_UNSPEC because an upcoming public header file update will use that name.
* tunables: Use correct unused attributeFlorian Weimer2016-12-312-1/+5
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* Add NEWS item for tunablesSiddhesh Poyarekar2016-12-311-0/+5
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* User manual documentation for tunablesSiddhesh Poyarekar2016-12-314-2/+199
| | | | | | | | | Create a new node for tunables documentation and add notes for the malloc tunables. * manual/tunables.texi: New chapter. * manual/Makefile (chapters): Add it. * manual/probes.texi (@node): Point to the Tunables chapter.
* Enhance --enable-tunables to select tunables frontend at build timeSiddhesh Poyarekar2016-12-319-8/+79
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At the GNU Tools Cauldron 2016, the state of the current tunables patchset was considered OK with the addition of a way to select the frontend to be used for the tunables. That is, to avoid being locked in to one type of frontend initially, it should be possible to build tunables with a different frontend with something as simple as a configure switch. To that effect, this patch enhances the --enable-tunables option to accept more values than just 'yes' or 'no'. The current frontend (and default when enable-tunables is 'yes') is called 'valstring', to select the frontend where a single environment variable is set to a colon-separated value string. More such frontends can be added in future. * Makeconfig (have-tunables): Check for non-negative instead of positive. * configure.ac: Add 'valstring' as a valid value for --enable-tunables. * configure: Regenerate. * elf/Makefile (have-tunables): Check for non-negative instead of positive. (CPPFLAGS-dl-tunables.c): Define TUNABLES_FRONTEND for dl-tunables.c. * elf/dl-tunables.c (GLIBC_TUNABLES): Define only when TUNABLES_FRONTEND == TUNABLES_FRONTEND_valstring. (tunables_strdup): Likewise. (disable_tunables): Likewise. (parse_tunables): Likewise. (__tunables_init): Process GLIBC_TUNABLES envvar only when. TUNABLES_FRONTEND == TUNABLES_FRONTEND_valstring. * elf/dl-tunables.h (TUNABLES_FRONTEND_valstring): New macro. (TUNABLES_FRONTEND_yes): New macro, define as TUNABLES_FRONTEND_valstring by default. * manual/install.texi: Document new acceptable values for --enable-tunables. * INSTALL: Regenerate.
* Initialize tunable list with the GLIBC_TUNABLES environment variableSiddhesh Poyarekar2016-12-317-2/+156
| | | | | | | | | | | | | | | | | | | | | | Read tunables values from the users using the GLIBC_TUNABLES environment variable. The value of this variable is a colon-separated list of name=value pairs. So a typical string would look like this: GLIBC_TUNABLES=glibc.malloc.mmap_threshold=2048:glibc.malloc.trim_threshold=1024 * config.make.in (have-loop-to-function): Define. * elf/Makefile (CFLAGS-dl-tunables.c): Add -fno-tree-loop-distribute-patterns. * elf/dl-tunables.c: Include libc-internals.h. (GLIBC_TUNABLES): New macro. (tunables_strdup): New function. (parse_tunables): New function. (min_strlen): New function. (__tunables_init): Use the new functions and macro. (disable_tunable): Disable tunable from GLIBC_TUNABLES. * malloc/tst-malloc-usable-tunables.c: New test case. * malloc/tst-malloc-usable-static-tunables.c: New test case. * malloc/Makefile (tests, tests-static): Add tests.
* Add framework for tunablesSiddhesh Poyarekar2016-12-3125-2/+947
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The tunables framework allows us to uniformly manage and expose global variables inside glibc as switches to users. tunables/README has instructions for glibc developers to add new tunables. Tunables support can be enabled by passing the --enable-tunables configure flag to the configure script. This patch only adds a framework and does not pose any limitations on how tunable values are read from the user. It also adds environment variables used in malloc behaviour tweaking to the tunables framework as a PoC of the compatibility interface. * manual/install.texi: Add --enable-tunables option. * INSTALL: Regenerate. * README.tunables: New file. * Makeconfig (CPPFLAGS): Define TOP_NAMESPACE. (before-compile): Generate dl-tunable-list.h early. * config.h.in: Add HAVE_TUNABLES. * config.make.in: Add have-tunables. * configure.ac: Add --enable-tunables option. * configure: Regenerate. * csu/init-first.c (__libc_init_first): Move __libc_init_secure earlier... * csu/init-first.c (LIBC_START_MAIN):... to here. Include dl-tunables.h, libc-internal.h. (LIBC_START_MAIN) [!SHARED]: Initialize tunables for static binaries. * elf/Makefile (dl-routines): Add dl-tunables. * elf/Versions (ld): Add __tunable_set_val to GLIBC_PRIVATE namespace. * elf/dl-support (_dl_nondynamic_init): Unset MALLOC_CHECK_ only when !HAVE_TUNABLES. * elf/rtld.c (process_envvars): Likewise. * elf/dl-sysdep.c [HAVE_TUNABLES]: Include dl-tunables.h (_dl_sysdep_start): Call __tunables_init. * elf/dl-tunable-types.h: New file. * elf/dl-tunables.c: New file. * elf/dl-tunables.h: New file. * elf/dl-tunables.list: New file. * malloc/tst-malloc-usable-static.c: New test case. * malloc/Makefile (tests-static): Add it. * malloc/arena.c [HAVE_TUNABLES]: Include dl-tunables.h. Define TUNABLE_NAMESPACE. (DL_TUNABLE_CALLBACK (set_mallopt_check)): New function. (DL_TUNABLE_CALLBACK_FNDECL): New macro. Use it to define callback functions. (ptmalloc_init): Set tunable values. * scripts/gen-tunables.awk: New file. * sysdeps/mach/hurd/dl-sysdep.c: Include dl-tunables.h. (_dl_sysdep_start): Call __tunables_init.
* resolv: Deprecate RES_BLASTFlorian Weimer2016-12-315-7/+13
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* resolv: Deprecate the "inet6" option and RES_USE_INET6 [BZ #19582]Florian Weimer2016-12-3117-62/+133
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* resolv: Add beginnings of a libresolv test suiteFlorian Weimer2016-12-3146-1/+4508
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* support: Implement --verbose option for test programsFlorian Weimer2016-12-316-8/+35
| | | | | | Some tests can produce rather verbose tracing information, and the --verbose option provides a standardized way to enable such logging output.
* support: Use support_record_failure consistentlyFlorian Weimer2016-12-3112-32/+50
| | | | | | | | This causes more test programs to link in the support_record_failure function, which triggers an early call to mmap from an ELF constructor, but this should not have side effects intefering with the functionality actually under test (unlike, say, a call to malloc).
* support: Helper functions for entering namespacesFlorian Weimer2016-12-318-0/+280
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* getentropy: Declare it in <unistd.h> for __USE_MISC [BZ #17252]Florian Weimer2016-12-312-1/+7
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* New condvar implementation that provides stronger ordering guarantees.Torvald Riegel2016-12-3149-4621/+1671
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a new implementation for condition variables, required after http://austingroupbugs.net/view.php?id=609 to fix bug 13165. In essence, we need to be stricter in which waiters a signal or broadcast is required to wake up; this couldn't be solved using the old algorithm. ISO C++ made a similar clarification, so this also fixes a bug in current libstdc++, for example. We can't use the old algorithm anymore because futexes do not guarantee to wake in FIFO order. Thus, when we wake, we can't simply let any waiter grab a signal, but we need to ensure that one of the waiters happening before the signal is woken up. This is something the previous algorithm violated (see bug 13165). There's another issue specific to condvars: ABA issues on the underlying futexes. Unlike mutexes that have just three states, or semaphores that have no tokens or a limited number of them, the state of a condvar is the *order* of the waiters. A waiter on a semaphore can grab a token whenever one is available; a condvar waiter must only consume a signal if it is eligible to do so as determined by the relative order of the waiter and the signal. Therefore, this new algorithm maintains two groups of waiters: Those eligible to consume signals (G1), and those that have to wait until previous waiters have consumed signals (G2). Once G1 is empty, G2 becomes the new G1. 64b counters are used to avoid ABA issues. This condvar doesn't yet use a requeue optimization (ie, on a broadcast, waking just one thread and requeueing all others on the futex of the mutex supplied by the program). I don't think doing the requeue is necessarily the right approach (but I haven't done real measurements yet): * If a program expects to wake many threads at the same time and make that scalable, a condvar isn't great anyway because of how it requires waiters to operate mutually exclusive (due to the mutex usage). Thus, a thundering herd problem is a scalability problem with or without the optimization. Using something like a semaphore might be more appropriate in such a case. * The scalability problem is actually at the mutex side; the condvar could help (and it tries to with the requeue optimization), but it should be the mutex who decides how that is done, and whether it is done at all. * Forcing all but one waiter into the kernel-side wait queue of the mutex prevents/avoids the use of lock elision on the mutex. Thus, it prevents the only cure against the underlying scalability problem inherent to condvars. * If condvars use short critical sections (ie, hold the mutex just to check a binary flag or such), which they should do ideally, then forcing all those waiter to proceed serially with kernel-based hand-off (ie, futex ops in the mutex' contended state, via the futex wait queues) will be less efficient than just letting a scalable mutex implementation take care of it. Our current mutex impl doesn't employ spinning at all, but if critical sections are short, spinning can be much better. * Doing the requeue stuff requires all waiters to always drive the mutex into the contended state. This leads to each waiter having to call futex_wake after lock release, even if this wouldn't be necessary. [BZ #13165] * nptl/pthread_cond_broadcast.c (__pthread_cond_broadcast): Rewrite to use new algorithm. * nptl/pthread_cond_destroy.c (__pthread_cond_destroy): Likewise. * nptl/pthread_cond_init.c (__pthread_cond_init): Likewise. * nptl/pthread_cond_signal.c (__pthread_cond_signal): Likewise. * nptl/pthread_cond_wait.c (__pthread_cond_wait): Likewise. (__pthread_cond_timedwait): Move here from pthread_cond_timedwait.c. (__condvar_confirm_wakeup, __condvar_cancel_waiting, __condvar_cleanup_waiting, __condvar_dec_grefs, __pthread_cond_wait_common): New. (__condvar_cleanup): Remove. * npt/pthread_condattr_getclock.c (pthread_condattr_getclock): Adapt. * npt/pthread_condattr_setclock.c (pthread_condattr_setclock): Likewise. * npt/pthread_condattr_getpshared.c (pthread_condattr_getpshared): Likewise. * npt/pthread_condattr_init.c (pthread_condattr_init): Likewise. * nptl/tst-cond1.c: Add comment. * nptl/tst-cond20.c (do_test): Adapt. * nptl/tst-cond22.c (do_test): Likewise. * sysdeps/aarch64/nptl/bits/pthreadtypes.h (pthread_cond_t): Adapt structure. * sysdeps/arm/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/ia64/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/m68k/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/microblaze/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/mips/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/nios2/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/s390/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/sh/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/tile/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/x86/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/nptl/internaltypes.h (COND_NWAITERS_SHIFT): Remove. (COND_CLOCK_BITS): Adapt. * sysdeps/nptl/pthread.h (PTHREAD_COND_INITIALIZER): Adapt. * nptl/pthreadP.h (__PTHREAD_COND_CLOCK_MONOTONIC_MASK, __PTHREAD_COND_SHARED_MASK): New. * nptl/nptl-printers.py (CLOCK_IDS): Remove. (ConditionVariablePrinter, ConditionVariableAttributesPrinter): Adapt. * nptl/nptl_lock_constants.pysym: Adapt. * nptl/test-cond-printers.py: Adapt. * sysdeps/unix/sysv/linux/hppa/internaltypes.h (cond_compat_clear, cond_compat_check_and_clear): Adapt. * sysdeps/unix/sysv/linux/hppa/pthread_cond_timedwait.c: Remove file ... * sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c (__pthread_cond_timedwait): ... and move here. * nptl/DESIGN-condvar.txt: Remove file. * nptl/lowlevelcond.sym: Likewise. * nptl/pthread_cond_timedwait.c: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
* Revert "Fix ChangeLog typo"Andreas Schwab2016-12-311-1/+1
| | | | This reverts commit d2d43afa113eb143303a3d4c1e31194648077642.
* Add fromfp functions.Joseph Myers2016-12-3174-30/+39745
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TS 18661-1 defines fromfp functions (fromfp, fromfpx, ufromfp, ufromfpx, and float and long double variants) to convert from floating-point to an integer type with any signedness and any given width up to that of intmax_t, in any of the five IEEE rounding modes (the usual four for binary floating point, plus rounding to nearest with ties rounding away from zero), with control of whether in-range non-integer values should result in the "inexact" exception being raised. This patch implements these functions for glibc. These implementations are (apart from raising exceptions) pure integer implementations; it's entirely possible optimized versions could be devised for some architectures. A common math/fromfp.h header provides various common helper code that can readily be shared between the implementations for different types. For each type, the bulk of the implementation is also shared between the four functions, with wrappers that define UNSIGNED and INEXACT macros appropriately before including the main implementation. As the functions return intmax_t and uintmax_t without math.h being allowed to expose those typedef names, they are declared using __intmax_t and __uintmax_t as obtained from <bits/types.h>. The FP_INT_* rounding direction macros are defined as ascending integers in the order the names are listed in the TS; I see no significant value in allowing architectures to vary the values of them. The libm-test machinery is duly adapted to handle unsigned int arguments, and intmax_t and uintmax_t results. Because each test input is generally tested for four functions, five rounding modes and several different widths, the libm-test.inc additions are very large. Thus, the diffs in the body of this message exclude the libm-test.inc changes, with the full patch being attached gzipped. The bulk of the new tests were generated (expanded from a test input plus rounding results and information about where it lies in the relevant interval between integers, to libm-test tests for all relevant combinations of function, rounding direction and width) by a script that's included in the patch as math/gen-fromfp-tests.py (input data math/gen-fromfp-tests-inputs); as an ad hoc script that's not really expected to be rerun, it's not very polished, but it's at least plausibly useful for adding any further tests for these functions in future. I may split the libm-test tests up by function in future (so both libm-test.inc and auto-libm-test-out are split into separate files, and the tests for each function are also built and run separately), but not for 2.25. For no obvious reason, adding tgmath tests for the new functions resulted in -Wuninitialized errors from test-tgmath.c about the variable i being used uninitialized. Those errors were correct - the variable is read by the frexp version in test-tgmath.c (where real frexp would write through that pointer instead of reading it) - but I don't know why this patch would result in the pre-existing issue being newly detected. The patch initializes the variable to avoid those errors. With these changes, glibc 2.25 should have all the library features from TS 18661-1 other than the functions that round result to narrower type (and constant rounding directions, but I'm considering those mainly a compiler feature not a library one). Tested for x86_64, x86, mips64 and powerpc. * math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfp): New declaration. [__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfpx): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfp): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfpx): Likewise. * math/tgmath.h (__TGMATH_TERNARY_FIRST_REAL_RET_ONLY): New macro. [__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfp): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfp): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfpx): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfpx): Likewise. * math/math.h: Include <bits/types.h>. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_INT_UPWARD): New enum constant and macro. (FP_INT_DOWNWARD): Likewise. (FP_INT_TOWARDZERO): Likewise. (FP_INT_TONEARESTFROMZERO): Likewise. (FP_INT_TONEAREST): Likewise. * math/Versions (fromfp): New libm symbol at version GLIBC_2.25. (fromfpf): Likewise. (fromfpl): Likewise. (ufromfp): Likewise. (ufromfpf): Likewise. (ufromfpl): Likewise. (fromfpx): Likewise. (fromfpxf): Likewise. (fromfpxl): Likewise. (ufromfpx): Likewise. (ufromfpxf): Likewise. (ufromfpxl): Likewise. * math/Makefile (libm-calls): Add s_fromfpF, s_ufromfpF, s_fromfpxF and s_ufromfpxF. * math/gen-fromfp-tests.py: New file. * math/gen-fromfp-tests-inputs: Likewise. * math/libm-test.inc: Include <stdint.h> (check_intmax_t): New function. (check_uintmax_t): Likewise. (struct test_fiu_M_data): New type. (struct test_fiu_U_data): Likewise. (RUN_TEST_fiu_M): New macro. (RUN_TEST_LOOP_fiu_M): Likewise. (RUN_TEST_fiu_U): Likewise. (RUN_TEST_LOOP_fiu_U): Likewise. (fromfp_test_data): New array. (fromfp_test): New function. (fromfpx_test_data): New array. (fromfpx_test): New function. (ufromfp_test_data): New array. (ufromfp_test): New function. (ufromfpx_test_data): New array. (ufromfpx_test): New function. (main): Call fromfp_test, fromfpx_test, ufromfp_test and ufromfpx_test. * math/gen-libm-test.pl (parse_args): Handle u, M and U descriptor characters. * math/test-tgmath-ret.c: Include <stdint.h>. (rm): New variable. (width): Likewise. (CHECK_RET_CONST_TYPE): Take extra arguments and pass them to called function. (CHECK_RET_CONST_FLOAT): Take extra arguments and pass them to CHECK_RET_CONST_TYPE. (CHECK_RET_CONST_DOUBLE): Likewise. (CHECK_RET_CONST_LDOUBLE): Likewise. (CHECK_RET_CONST): Take extra arguments and pass them to calls macros. (fromfp): New CHECK_RET_CONST call. (ufromfp): Likewise. (fromfpx): Likewise. (ufromfpx): Likewise. (do_test): Call check_return_fromfp, check_return_ufromfp, check_return_fromfpx and check_return_ufromfpx. * math/test-tgmath.c: Include <stdint.h> (NCALLS): Increase to 138. (F(compile_test)): Initialize i. Call fromfp functions. (F(fromfp)): New function. (F(fromfpx)): Likewise. (F(ufromfp)): Likewise. (F(ufromfpx)): Likewise. * manual/arith.texi (Rounding Functions): Document FP_INT_UPWARD, FP_INT_DOWNWARD, FP_INT_TOWARDZERO, FP_INT_TONEARESTFROMZERO, FP_INT_TONEAREST, fromfp, fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf, fromfpxl, ufromfpx, ufromfpxf and ufromfpxl. * manual/libm-err-tab.pl (@all_functions): Add fromfp, fromfpx, ufromfp and ufromfpx. * math/fromfp.h: New file. * sysdeps/ieee754/dbl-64/s_fromfp.c: Likewise. * sysdeps/ieee754/dbl-64/s_fromfp_main.c: Likewise. * sysdeps/ieee754/dbl-64/s_fromfpx.c: Likewise. * sysdeps/ieee754/dbl-64/s_ufromfp.c: Likewise. * sysdeps/ieee754/dbl-64/s_ufromfpx.c: Likewise. * sysdeps/ieee754/flt-32/s_fromfpf.c: Likewise. * sysdeps/ieee754/flt-32/s_fromfpf_main.c: Likewise. * sysdeps/ieee754/flt-32/s_fromfpxf.c: Likewise. * sysdeps/ieee754/flt-32/s_ufromfpf.c: Likewise. * sysdeps/ieee754/flt-32/s_ufromfpxf.c: Likewise. * sysdeps/ieee754/ldbl-128/s_fromfpl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_fromfpl_main.c: Likewise. * sysdeps/ieee754/ldbl-128/s_fromfpxl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_ufromfpl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_ufromfpxl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_fromfpl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_fromfpl_main.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_fromfpxl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_ufromfpl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_ufromfpxl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_fromfpl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_fromfpl_main.c: Likewise. * sysdeps/ieee754/ldbl-96/s_fromfpxl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_ufromfpl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_ufromfpxl.c: Likewise. * sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fromfp, ufromfp, fromfpx and ufromfpx. (CFLAGS-nldbl-fromfp.c): New variable. (CFLAGS-nldbl-fromfpx.c): Likewise. (CFLAGS-nldbl-ufromfp.c): Likewise. (CFLAGS-nldbl-ufromfpx.c): Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-compat.h: Include <stdint.h>. * sysdeps/ieee754/ldbl-opt/nldbl-fromfp.c: New file. * sysdeps/ieee754/ldbl-opt/nldbl-fromfpx.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-ufromfp.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-ufromfpx.c: Likewise. * sysdeps/nacl/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/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/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/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/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* resolv: Turn historic name lookup functions into compat symbolsFlorian Weimer2016-12-304-52/+77
| | | | | | | | | This change also removes the preprocessor-based function renaming. It also applied to tests in resolv/, which ended up running against the historic functions. _endhtent was not part of the ABI because it is not listed in the resolv/Versions file.
* Define __intmax_t, __uintmax_t in bits/types.h.Joseph Myers2016-12-303-9/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | TS 18661-1 defines *fromfp* functions, which are declared in math.h and whose return types are intmax_t and uintmax_t, without allowing math.h to define those typedefs. (This is similar to e.g. ISO C declaring vprintf in stdio.h without allowing that header to define va_list.) Thus, math.h needs to access those typedefs under internal names. This patch accordingly arranges for bits/types.h (which defines only internal names, not public *_t typedefs) to define __intmax_t and __uintmax_t. stdint.h is made to use bits/types.h and define intmax_t and uintmax_t using __intmax_t and __uintmax_t, to avoid duplication of information. (It would be reasonable to define more of the types in stdint.h - and in sys/types.h, where it duplicates such types - using information already available in bits/types.h.) The idea is that the subsequent addition of fromfp functions would then make math.h include bits/types.h and use __intmax_t and __uintmax_t as the return types of those functions. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * bits/types.h (__intmax_t): New typedef. (__uintmax_t): Likewise. * sysdeps/generic/stdint.h: Include <bits/types.h>. (intmax_t): Define using __intmax_t. (uintmax_t): Define using __uintmax_t.
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