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* Update README and NEWS for ports directory removal.Joseph Myers2014-06-251-0/+4
| | | | | | | | | | | | | | | This patch updates README to remove a mention of the ports directory. It also adds a NEWS item for the merge of ports into the main sysdeps tree (I think it's NEWS-worthy, although not strictly a user-visible feature). Other remaining ports references to resolve: a comment in manual/signal.texi (not giving a literal path, but maybe should change anyway); a comment in config.h.in (path should be updated); scripts/list-sources.sh (appears to date back to ports being a separate repository). * README: Do not mention ports directory.
* Add compat symbols for scalb* in i386Siddhesh Poyarekar2014-06-251-1/+1
| | | | | Bring back symbols into libc.so for scalb* functions. They are no longer used but unfortunately they're now part of the ABI.
* Fix x86/x86_64 expm1l spurious underflow exceptions (bug 16539).Joseph Myers2014-06-241-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes bug 16539, spurious underflow exceptions from x86 / x86-64 expm1l. The problem is that the computation of a base-2 exponent with extra precision involves spurious underflows for arguments that are small but not subnormal, so a check is added to just return the argument in those cases. (If the argument *is* subnormal, underflowing is correct and the existing code will always underflow, so it suffices to keep using the existing code in that case; some expm1 implementations have a bug (bug 16353) with missing underflow exceptions, but I don't think there's such a bug in this particular version.) Tested x86_64 and x86; no ulps updates needed. (auto-libm-test-out diffs omitted below.) [BZ #16539] * sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]: Just return the argument for normal arguments with exponent below -64. * sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]: Likewise. * math/auto-libm-test-in: Add another test of expm1. * math/auto-libm-test-out: Regenerated.
* Fix ldbl-128 erfl spurious underflows (bug 16287).Joseph Myers2014-06-241-12/+12
| | | | | | | | | | | | | | | | | | | | This patch fixes bug 16287, spurious underflows from ldbl-128 erfl arising from it calling erfcl for arguments with absolute value at least 1.0, although for large positive arguments erfcl correctly underflows but erfl shouldn't. The fix is simply to avoid calling erfcl, and just return 1, for arguments above a cut-off large enough that erfl correctly rounds to-nearest as 1 but not so large that erfcl underflows. Tested mips64. Also tested x86_64 and x86 to confirm the new tests (taken from the tests of erfc) don't cause any problems there; no ulps updates needed. [BZ #16287] * sysdeps/ieee754/ldbl-128/s_erfl.c (__erfl): Return 1 without calling __erfcl for arguments at least 16. * math/auto-libm-test-in: Add more tests of erf. * math/auto-libm-test-out: Regenerated.
* Fix namespace violation in pthreadtypes.h (BZ #17084)Siddhesh Poyarekar2014-06-241-1/+1
| | | | This was causing conformtest failures on i386.
* Add bug 16918 to NEWS.Wilco2014-06-241-3/+4
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* Revert "Add bug 16918 to NEWS."Marcus Shawcroft2014-06-241-8/+3
| | | | This reverts commit 222b787a6fd36601f5c5d22378176798327fcf31.
* Add bug 16918 to NEWS.Wilco2014-06-241-3/+8
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* Fix cosh spurious underflows from expm1 (bug 16354), inaccurate results near ↵Joseph Myers2014-06-231-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 0 (bug 17061). This patch fixes bug 16354, spurious underflows from cosh when a tiny argument is passed to expm1 and expm1 correctly underflows although the final result of cosh should be 1. As noted in that bug, some cases are latent because of expm1 implementations not raising underflow (bug 16353), but all the implementations are fixed similarly. They already contained checks for tiny arguments, but the checks were too late to avoid underflow from expm1 (although they would avoid underflow from subsequent squaring of the result of expm1); they are moved before the expm1 calls. The thresholds used for considering arguments tiny are not particularly consistent in how they relate to the precision of the floating-point format in question. They are, however, all sufficient to ensure that the round-to-nearest result of cosh is indeed 1 below the threshold (although sometimes they are smaller than necessary). But the previous logic did not return 1, but the previously computed 1 + expm1(abs(x)) value. And the thresholds in the ldbl-128 and ldbl-128ibm code (0x1p-71L - I suspect 0x3f8b was intended in the code instead of 0x3fb8 - and (roughly) 0x1p-55L) are not sufficient for that value to be 1. So by moving the test for tiny arguments, and consequently returning 1 directly now the expm1 value hasn't been computed by that point, this patch also fixes bug 17061, the (large number of ulps) inaccuracy for small arguments in those implementations. Tests for that bug are duly added. Tested x86_64 and x86 and ulps updated accordingly. Also tested for mips64 and powerpc32 to validate the ldbl-128 and ldbl-128ibm changes. [BZ #16354] [BZ #17061] * sysdeps/ieee754/dbl-64/e_cosh.c (__ieee754_cosh): Check for small arguments before calling __expm1. * sysdeps/ieee754/flt-32/e_coshf.c (__ieee754_coshf): Check for small arguments before calling __expm1f. * sysdeps/ieee754/ldbl-128/e_coshl.c (__ieee754_coshl): Check for small arguments before calling __expm1l. * sysdeps/ieee754/ldbl-128ibm/e_coshl.c (__ieee754_coshl): Likewise. * sysdeps/ieee754/ldbl-96/e_coshl.c (__ieee754_coshl): Likewise. * math/auto-libm-test-in: Add more cosh tests. Do not allow spurious underflow for some cosh tests. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update.
* Set errno for y1 overflow (bug 17050).Joseph Myers2014-06-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes bug 17050, missing errno setting for y1 overflow (for small positive arguments). An appropriate check is added for overflow directly in the __ieee754_y1 implementation, similar to the check present for yn (doing it there rather than in the wrapper also avoids yn needing to repeat the check when called for order 1 or -1 and it uses __ieee754_y1). Tested x86_64 and x86; no ulps update needed. Also tested for mips64 to verify the ldbl-128 fix (the ldbl-128ibm code just #includes the ldbl-128 file). [BZ #17050] * sysdeps/ieee754/dbl-64/e_j1.c: Include <errno.h>. (__ieee754_y1): Set errno if return value overflows. * sysdeps/ieee754/flt-32/e_j1f.c: Include <errno.h>. (__ieee754_y1f): Set errno if return value overflows. * sysdeps/ieee754/ldbl-128/e_j1l.c: Include <errno.h>. (__ieee754_y1l): Set errno if return value overflows. * sysdeps/ieee754/ldbl-96/e_j1l.c: Include <errno.h>. (__ieee754_y1l): Set errno if return value overflows. * math/auto-libm-test-in: Add more tests of y0, y1 and yn. * math/auto-libm-test-out: Regenerated.
* Fix pow overflow in non-default rounding modes (bug 16315).Joseph Myers2014-06-231-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes bug 16315, bad pow handling of overflow/underflow in non-default rounding modes. Tests of pow are duly converted to ALL_RM_TEST to run all tests in all rounding modes. There are two main issues here. First, various implementations compute a negative result by negating a positive result, but this yields inappropriate overflow / underflow values for directed rounding, so either overflow / underflow results need recomputing in the correct sign, or the relevant overflowing / underflowing operation needs to be made to have a result of the correct sign. Second, the dbl-64 implementation sets FE_TONEAREST internally; in the overflow / underflow case, the result needs recomputing in the original rounding mode. Tested x86_64 and x86 and ulps updated accordingly. [BZ #16315] * sysdeps/i386/fpu/e_pow.S (__ieee754_pow): Ensure possibly overflowing or underflowing operations take place with sign of result. * sysdeps/i386/fpu/e_powf.S (__ieee754_powf): Likewise. * sysdeps/i386/fpu/e_powl.S (__ieee754_powl): Likewise. * sysdeps/ieee754/dbl-64/e_pow.c: Include <math.h>. (__ieee754_pow): Recompute overflowing and underflowing results in original rounding mode. * sysdeps/x86/fpu/powl_helper.c: Include <stdbool.h>. (__powl_helper): Allow negative argument X and scale negated value as needed. Avoid passing value outside [-1, 1] to f2xm1. * sysdeps/x86_64/fpu/e_powl.S (__ieee754_powl): Ensure possibly overflowing or underflowing operations take place with sign of result. * sysdeps/x86_64/fpu/multiarch/e_pow.c [HAVE_FMA4_SUPPORT]: Include <math.h>. * math/auto-libm-test-in: Add more tests of pow. * math/auto-libm-test-out: Regenerated. * math/libm-test.inc (pow_test): Use ALL_RM_TEST. (pow_tonearest_test_data): Remove. (pow_test_tonearest): Likewise. (pow_towardzero_test_data): Likewise. (pow_test_towardzero): Likewise. (pow_downward_test_data): Likewise. (pow_test_downward): Likewise. (pow_upward_test_data): Likewise. (pow_test_upward): Likewise. (main): Don't call removed functions. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* Don't ignore too long lines in nss_files (BZ #17079)Andreas Schwab2014-06-231-1/+1
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* Mention CVE-2014-4043 in NEWSAllan McRae2014-06-211-0/+6
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* [BZ #17075] ARM: Fix immediate calculation of R_ARM_TLS_DESCMaciej W. Rozycki2014-06-201-1/+1
| | | | | | This fixes the calculation of R_ARM_TLS_DESC relocations for lazy global symbol references, i.e. created with `-z lazy' in effect with the static linker, where immediate resolution is requested with LD_BIND_NOW.
* Fix another memory leak in regexp compiler (BZ #17069)Andreas Schwab2014-06-201-1/+1
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* Fix ChangeLog and NEWS goof-upSiddhesh Poyarekar2014-06-201-12/+12
| | | | | The ChangeLog belonged to localedata and the bug is not completely fixed, so it didn't deserve to enter the NEWS yet.
* [BZ #6803] Set errno for scalbln, scalbnStefan Liebler2014-06-201-12/+12
| | | | | | | | | | | Errno is not set and the testcases will fail. Now the scalbln-aliases are removed in i386/m68 and the wrappers are used when calling the scalbln-functions. On ia64 only scalblnf has its own implementation. For scalbln and scalblnl the ieee754/dbl-64 and ieee754/ldbl-96 are used, thus the wrappers are needed, too.
* [AArch64] Add optimized strchr.Richard Earnshaw2014-06-191-0/+2
| | | | | | | | Implementation of strchr for AArch64. Speedups taken from micro-bench show the improvements relative to the standard C code. The use of LD1 means we have identical code for both big- and little-endian systems.
* Fix __ieee754_logl (-LDBL_MAX) in FE_DOWNWARD mode (bug 17022).Joseph Myers2014-06-181-2/+2
| | | | | | | | | | | | | | | | | | | This patch fixes __ieee754_logl (-LDBL_MAX) on x86_64 and x86 not to subtract 1 from its argument and so cause spurious overflow in FE_DOWNWARD mode. (For any argument strictly less than -1, it doesn't matter whether or not 1 is subtracted before computing log1p, as long as the result doesn't overflow to -Inf.) Tested x86_64 and x86. (This particular case lacks test coverage, since the testsuite doesn't cover -lieee, but it will be covered by tests after the following patch to test pow in all rounding modes, which was the context in which this bug was found.) [BZ #17022] * sysdeps/i386/fpu/e_logl.S (__ieee754_logl): Do not subtract 1 from arguments -2 or below. * sysdeps/i386/i686/fpu/e_logl.S (__ieee754_logl): Likewise. * sysdeps/x86_64/fpu/e_logl.S (__ieee754_logl): Likewise.
* Don't read past end of pattern in fnmatch (BZ #17062)Andreas Schwab2014-06-181-1/+1
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* PowerPC: Fix nearbyintl failure for few inputsRajalakshmi Srinivasaraghavan2014-06-171-1/+2
| | | | | | | | This patch fixes few failures in nearbyintl() where the fraction part is close to 0.5.i The new tests added report few extra failures in nearbyint_downward and nearbyint_towardzero which is a known issue. Fixes #17031.
* Add CFI to x86 ceil / floor / trunc (bug 16681).Joseph Myers2014-06-161-5/+5
| | | | | | | | | | | | | | | | | | | This patch adds CFI to the sysdeps/i386/fpu/ implementations of ceil, floor and trunc functions, for consistency with other x86 .S files in glibc which have CFI for stack adjustments. Tested x86. [BZ #16681] * sysdeps/i386/fpu/s_ceil.S (__ceil): Add CFI. * sysdeps/i386/fpu/s_ceilf.S (__ceilf): Likewise. * sysdeps/i386/fpu/s_ceill.S (__ceill): Likewise. * sysdeps/i386/fpu/s_floor.S (__floor): Likewise. * sysdeps/i386/fpu/s_floorf.S (__floorf): Likewise. * sysdeps/i386/fpu/s_floorl.S (__floorl): Likewise. * sysdeps/i386/fpu/s_trunc.S (__trunc): Likewise. * sysdeps/i386/fpu/s_truncf.S (__truncf): Likewise. * sysdeps/i386/fpu/s_truncl.S (__truncl): Likewise.
* Fix tautological comparison in non-executed part of tst-setuid2 (BZ #17058)Florian Weimer2014-06-161-1/+1
| | | | | This part never runs with the current implementation because the setresuid call currently aborts (as intended).
* get_nprocs: Only return explictly set cache values (BZ #16996)Meador Inge2014-06-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The implementation of __get_nprocs uses a stactic variable to cache the value of the current number of processors. The caching breaks when 'time (NULL) == 0': $ cat nproc.c #include <stdio.h> #include <time.h> #include <sys/time.h> int main(int argc, char *argv[]) { time_t t; struct timeval tv = {0, 0}; printf("settimeofday({0, 0}, NULL) = %d\n", settimeofday(&tv, NULL)); t = time(NULL); printf("Time: %d, CPUs: %d\n", (unsigned int)t, get_nprocs()); return 0; } $ gcc -O3 nproc.c $ ./a.out settimeofday({0, 0}, NULL) = -1 Time: 1401311578, CPUs: 4 $ sudo ./a.out settimeofday({0, 0}, NULL) = 0 Time: 0, CPUs: 0 The problem is with the condition used to check whether a cached value should be returned or not: static int cached_result; static time_t timestamp; time_t now = time (NULL); time_t prev = timestamp; atomic_read_barrier (); if (now == prev) return cached_result; This patch fixes the problem by ensuring that 'cached_result' has been set at least once before returning it.
* posix_spawn_file_actions_addopen needs to copy the path argument (BZ 17048)Florian Weimer2014-06-111-1/+1
| | | | | | | | POSIX requires that we make a copy, so we allocate a new string and free it in posix_spawn_file_actions_destroy. Reported by David Reid, Alex Gaynor, and Glyph Lefkowitz. This bug may have security implications.
* Fix log2 (1) in round-downward mode (bug 17042).Joseph Myers2014-06-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | As with other issues of this kind, bug 17042 is log2 (1) wrongly returning -0 instead of +0 in round-downward mode because of implementations effectively in terms of log1p (x - 1). This patch fixes the issue in the same way used for log and log10. Tested x86_64 and x86 and ulps updated accordingly. Also tested for mips64 to confirm a fix was needed for ldbl-128 and to validate that fix (also applied to ldbl-128ibm since that version of log2l is essentially the same as the ldbl-128 one). [BZ #17042] * sysdeps/i386/fpu/e_log2.S (__ieee754_log2): Take absolete value when x - 1 is zero. * sysdeps/i386/fpu/e_log2f.S (__ieee754_log2f): Likewise. * sysdeps/i386/fpu/e_log2l.S (__ieee754_log2l): Likewise. * sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Return 0.0L for an argument of 1.0L. * sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l): Likewise. * sysdeps/x86_64/fpu/e_log2l.S (__ieee754_log2l): Take absolute value when x - 1 is zero. * math/libm-test.inc (log2_test): Use ALL_RM_TEST. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* Fix memory overrun in getifaddrs_internal. Fixes bug 15698.Ondřej Bílka2014-06-051-11/+11
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* Install uz_UZ.UTF-8 locale (BZ #16095)Andreas Schwab2014-06-051-10/+10
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* Fixup ChangeLog and add missing NEWS entry for previous commits.David S. Miller2014-06-031-3/+3
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* Fix invalid file descriptor reuse while sending DNS query (BZ #15946)Andreas Schwab2014-06-031-10/+10
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* [AArch64] Rewrite feupdateenv (BZ 17009).Wilco2014-06-021-1/+2
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* Avoid stat/fstat in statvfs/fstatvfs (BZ #15132)Eric Wong2014-05-291-10/+10
| | | | | Delay the use of stat/fstat until stat data is required. When the kernel returns ST_VALID, stat data is not used by __internal_statvfs.
* ARM: Fix handling of concurrent TLS descriptor resolutionWill Newton2014-05-271-1/+1
| | | | | | | | | | | | | | | | | | | | The current code for handling concurrent resolution says that the ABI for _dl_tlsdesc_resolve_hold is the same as that of _dl_tlsdesc_lazy_resolver. However _dl_tlsdesc_resolve_hold is called from the trampoline directly rather than the lazy resolver stub so, for example, r2 has not been pushed so does not needed to be restored. This fixes an intermittent failure in nptl/tst-tls3 when building glibc for arm-linux-gnueabihf with -mtls-dialect=gnu2. ChangeLog: 2014-05-27 Will Newton <will.newton@linaro.org> [BZ #16990] * sysdeps/arm/dl-tlsdesc.S (_dl_tlsdesc_resolve_hold): Save and restore r2 rather than just restoring.
* Fix offset computation for append+ mode on switching from read (BZ #16724)Siddhesh Poyarekar2014-05-271-5/+5
| | | | | | | | | | | | | | | | | The offset computation in write mode uses the fact that _IO_read_end is kept in sync with the external file offset. This however is not true when O_APPEND is in effect since switching to write mode ought to send the external file offset to the end of file without making the necessary adjustment to _IO_read_end. Hence in append mode, offset computation when writing should only consider the effect of unflushed writes, i.e. from _IO_write_base to _IO_write_ptr. The wiki has a detailed document that describes the rationale for offsets returned by ftell in various conditions: https://sourceware.org/glibc/wiki/File%20offsets%20in%20a%20stdio%20stream%20and%20ftell
* Fix searching localedef input on I18NPATH (BZ #16984)Andreas Schwab2014-05-261-1/+1
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* [AARCH64] correct alignment of TLS_TCB_ALIGN (BZ #16796)Kyle McMartin2014-05-261-4/+4
| | | | | | | | | | | | | | | This fixes a variety of testsuite failures for me: tststatic.out Error 1 tststatic2.out Error 1 tst-tls9-static.out Error 1 tst-audit8.out Error 127 tst-audit9.out Error 127 tst-audit1.out Error 127 and also has the added benefit of making LD_AUDIT/sotruss work on AArch64. Otherwise, we bail out early in _dl_try_allocate_static_tls as the alignment requirement of the PT_TLS section in libc is 16.
* Use NSS_STATUS_TRYAGAIN to indicate insufficient buffer (BZ #16878)Siddhesh Poyarekar2014-05-261-3/+3
| | | | | | | | | | | | The netgroups nss modules in the glibc tree use NSS_STATUS_UNAVAIL (with errno as ERANGE) when the supplied buffer does not have sufficient space for the result. This is wrong, because the canonical way to indicate insufficient buffer is to set the errno to ERANGE and the status to NSS_STATUS_TRYAGAIN, as is used by all other modules. This fixes nscd behaviour when the nss_ldap module returns NSS_STATUS_TRYAGAIN to indicate that a netgroup entry is too long to fit into the supplied buffer.
* Define TSVTX in tar.h for older POSIX (bug 16978).Joseph Myers2014-05-231-1/+1
| | | | | | | | | | | | | | | As noted in bug 16978, older POSIX versions include in the specified contents of <tar.h>, with only the 2001 edition introducing the notion of XSI-conditional definitions and conditioning that definition. Thus, this macro should be defined for !__USE_XOPEN2K as well as for __USE_XOPEN, and this patch duly defines it in that case. Tested x86_64. [BZ #16978] * posix/tar.h [!__USE_XOPEN2K] (TSVTX): Define macro. * conform/Makefile (test-xfail-POSIX/tar.h/conform): Remove variable.
* Fix log10 (1) in round-downward mode (bug 16977).Joseph Myers2014-05-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | As with various other issues of this kind, bug 16977 is log10 (1) wrongly returning -0 rather than +0 in round-downward mode because of an implementation effectively in terms of log1p (x - 1). This patch fixes the issue in the same way used for log. Tested x86_64 and x86 and ulps updated accordingly. Also tested for mips64 to confirm a fix was needed for ldbl-128 and to validate that fix (also applied to ldbl-128ibm since that version of logl is essentially the same as the ldbl-128 one). [BZ #16977] * sysdeps/i386/fpu/e_log10.S (__ieee754_log10): Take absolute value when x - 1 is zero. * sysdeps/i386/fpu/e_log10f.S (__ieee754_log10f): Likewise. * sysdeps/i386/fpu/e_log10l.S (__ieee754_log10l): Likewise. * sysdeps/ieee754/ldbl-128/e_log10l.c (__ieee754_log10l): Return 0.0L for an argument of 1.0L. * sysdeps/ieee754/ldbl-128ibm/e_log10l.c (__ieee754_log10l): Likewise. * sysdeps/x86_64/fpu/e_log10l.S (__ieee754_log10l): Take absolute value when x - 1 is zero. * math/libm-test.inc (log10_test): Use ALL_RM_TEST. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* Fix strtold on 32-bit sparc (and probably others) (BZ #16965)Aurelien Jarno2014-05-201-1/+1
| | | | | | | | | | | | | This patch fixes an issue observed running the tst-strtod-round test on 32 bit sparc. In some conditions, strtold calls round_and_return, which in turn calls __mpn_rshift with cnt = 0, while stdlib/rshift.c explicitly says that cnts should satisfy 0 < CNT < BITS_PER_MP_LIMB. In this case, the code end up doing a logical shift right of the same amount than the register, which is undefined in the C standard. Due to this bug, 32-bit sparc does not correctly convert the value "0x1p-16446", but it is likely that other architectures are also affected for other input values.
* fix nl_langinfo with static linking (BZ #16915)Aurelien Jarno2014-05-201-1/+2
| | | | | | | | | | | | | | | | For static linking the locale code avoids linking code and data for unused categories. However for nl_langinfo we know only at runtime which categories are used, so direct reference to every nl_current_CATEGORY symbol should be done. This was broken by commit bc3e1c127392da88d0c8bf2ae728147982a3d1bc where nl_langinfo_l and nl_langinfo have been merged and some code has been lost in the process. In order to detect locales issues with static linking, compile a version of tst-langinfo with static linking. Note: this is Debian bug#747103 reported by Raphael <raphael.astier@eliot-sa.com>
* alpha: fix sa_flags type (BZ 16967)Richard Henderson2014-05-201-1/+1
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* alpha: Remove bits/siginfo.h (BZ 16966)Richard Henderson2014-05-201-1/+1
| | | | | | Using the default header instead. This matches the kernel, which also uses the generic header. Fixes the sys/wait.h conform issue, where si_band had the wrong type.
* Fix sparc memcpy data corruption when using niagara2 optimized routines.Jose E. Marchesi2014-05-171-1/+1
| | | | | * sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Add missing membar to avoid block loads/stores to overlap previous stores.
* SPARC: add prlimit and prlimit64 in <bits/resource.h> (BZ #16943)Aurelien Jarno2014-05-161-1/+1
| | | | | | | | prlimit and prlimit64 have been added in the main <bits/resource.h>, but not in the SPARC specific version. Fix that. Note: this is Debian bug#703559, reported by Emilio Pozuelo Monfort <pochu@debian.org>
* ptsname_r: don't leak uninitialized memory (BZ #16917)Aurelien Jarno2014-05-161-1/+1
| | | | | | | | | | | | | | | If the fd refers to a terminal device, but not a pty master, the TIOCGPTN ioctl returns with ENOTTY. This error is not caught, and the possibly undefined buffer passed to ptsname_r is sent directly to the stat64 syscall. Fix this by using a fallback to the old method only if the TIOCGPTN ioctl fails with EINVAL. This also fix the return value in that specific case (it return ENOENT without this patch). Also add tests to the ptsname_r function (and ptsname at the same time). Note: this is Debian bug#741482, reported by Jakub Wilk <jwilk@debian.org>
* Return EAI_AGAIN for AF_UNSPEC when herrno is TRY_AGAIN (BZ #16849)Siddhesh Poyarekar2014-05-151-2/+2
| | | | | | | | | | getaddrinfo correctly returns EAI_AGAIN for AF_INET and AF_INET6 queries. For AF_UNSPEC however, an older change (a682a1bf553b1efe4dbb03207fece5b719cec482) broke the check and due to that the returned error was EAI_NONAME. This patch fixes the check so that a non-authoritative not-found is returned as EAI_AGAIN to the user instead of EAI_NONAME.
* Fix log1pl (LDBL_MAX) in FE_UPWARD mode (bug 16564).Joseph Myers2014-05-141-7/+7
| | | | | | | | | | | | | | | | | | | | | | | Bug 16564 is spurious overflow of log1pl (LDBL_MAX) in FE_UPWARD mode, resulting from log1pl adding 1 to its argument (for arguments not close to 0), which overflows in that mode. This patch fixes this by avoiding adding 1 to large arguments (precisely what counts as large depends on the floating-point format). Tested x86_64 and x86, and spot-checked log1pl tests on mips64 and powerpc64. [BZ #16564] * sysdeps/i386/fpu/s_log1pl.S (__log1pl): Do not add 1 to positive arguments with exponent 65 or above. * sysdeps/ieee754/ldbl-128/s_log1pl.c (__log1pl): Do not add 1 to arguments 0x1p113L or above. * sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (__log1pl): Do not add 1 to arguments 0x1p107L or above. * sysdeps/x86_64/fpu/s_log1pl.S (__log1pl): Do not add 1 to positive arguments with exponent 65 or above. * math/auto-libm-test-in: Add more tests of log1p. * math/auto-libm-test-out: Regenerated.
* Fix cacos (+Inf + finite*i) in round-downward mode (bug 16928).Joseph Myers2014-05-141-1/+1
| | | | | | | | | | | | | | | | | | | | | According to C99/C11 Annex G, cacos applied to a value with real part +Inf and finite imaginary part should produce a result with real part +0. glibc wrongly produces a result with real part -0 in FE_DOWNWARD mode. This patch fixes this by checking for zero results in the relevant case of non-finite arguments (where there should never be a result with -0 real part), and converts the tests of cacos to ALL_RM_TEST. Tested x86_64 and x86 and ulps updated accordingly. [BZ #16928] * math/s_cacos.c (__cacos): Ensure zero real part of result from non-finite arguments is +0. * math/s_cacosf.c (__cacosf): Likewise. * math/s_cacosl.c (__cacosl): Likewise. * math/libm-test.inc (cacos_test): Use ALL_RM_TEST. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* Fix acosh (1) in round-downward mode (bug 16927).Joseph Myers2014-05-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to C99 and C11 Annex F, acosh (1) should be +0 in all rounding modes. However, some implementations in glibc wrongly return -0 in round-downward mode (which is what you get if you end up computing log1p (-0), via 1 - 1 being -0 in round-downward mode). This patch fixes the problem implementations, by correcting the test for an exact 1 value in the ldbl-96 implementation to allow for the explicit high bit of the mantissa, and by inserting fabs instructions in the i386 implementations; tests of acosh are duly converted to ALL_RM_TEST. I believe all the other sysdeps/ieee754 implementations are already OK (I haven't checked the ia64 versions, but if buggy then that will be obvious from the results of test runs after this patch is in). Tested x86_64 and x86 and ulps updated accordingly. [BZ #16927] * sysdeps/i386/fpu/e_acosh.S (__ieee754_acosh): Use fabs on x-1 value. * sysdeps/i386/fpu/e_acoshf.S (__ieee754_acoshf): Likewise. * sysdeps/i386/fpu/e_acoshl.S (__ieee754_acoshl): Likewise. * sysdeps/ieee754/ldbl-96/e_acoshl.c (__ieee754_acoshl): Correct for explicit high bit of mantissa when testing for argument equal to 1. * math/libm-test.inc (acosh_test): Use ALL_RM_TEST. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-08 00:02:39 +0000