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2015-05-01Add more tests of lgamma.Joseph Myers
This patch adds some randomly-generated tests of lgamma that are observed to increase ulps on x86_64. Tested for x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add more tests of lgamma. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-05-01Add more tests of log, log10, log1p, log2.Joseph Myers
This patch adds some randomly-generated tests of log, log10, log1p and log2 that are observed to increase ulps on x86_64. Tested for x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add more tests of log, log10, log2 and log1p. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-05-01elf.h: Add section compression constants and structures.Mark Wielaard
Add SHF_COMPRESSED section flag, Elf32_Chdr and Elf64_Chdr structs and ELFCOMPRESS constants to elf/elf.h.
2015-05-01Add more tests of exp, exp10, exp2, expm1.Joseph Myers
This patch adds some randomly-generated tests of exp, exp10, exp2 and expm1 that are observed to increase ulps on x86_64. Tested for x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add more tests of exp, exp10, exp2 and expm1. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-05-01Add more tests of erf, erfc.Joseph Myers
This patch adds some randomly-generated tests of erf and erfc that are observed to increase ulps on x86_64. Tested for x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add more tests of erf and erfc. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-05-01[AArch64] Fix the big endian loader name.Szabolcs Nagy
2015-04-30Add more tests of csqrt.Joseph Myers
This patch adds some randomly-generated tests of csqrt that are observed to increase ulps on x86_64. Tested for x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add more tests of csqrt. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-04-30Add further tests of cosh and sinh.Joseph Myers
This patch adds some further randomly-generated tests of cosh and sinh that are observed to increase ulps on x86_64. Tested for x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add more tests of cosh and sinh. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-04-30Remove MIPS version of waitid.c.Joseph Myers
Since glibc is no longer built with -Winline, a special MIPS version of waitid.c to disable -Winline is no longer needed, and this patch removes it. Tested that glibc does indeed build with the patch applied. * sysdeps/unix/sysv/linux/mips/mips32/waitid.c: Remove file.
2015-04-29NaCl: Change clock_t to long int.Roland McGrath
2015-04-29NaCl: Fix symbol names for euidaccess.Roland McGrath
2015-04-29NaCl: Make __suseconds_t be long int rather than int32_t.Roland McGrath
2015-04-29NEWS: BZ#18319 was fixed in commit ed159672eb3cd650a32b7e5cb4d5ec1fe0e63802Florian Weimer
2015-04-29CVE-2014-8121: Do not close NSS files database during iteration [BZ #18007]Florian Weimer
Robin Hack discovered Samba would enter an infinite loop processing certain quota-related requests. We eventually tracked this down to a glibc issue. Running a (simplified) test case under strace shows that /etc/passwd is continuously opened and closed: … open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 3 lseek(3, 0, SEEK_CUR) = 0 read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 2717 lseek(3, 2717, SEEK_SET) = 2717 close(3) = 0 open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 3 lseek(3, 0, SEEK_CUR) = 0 lseek(3, 0, SEEK_SET) = 0 read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 2717 lseek(3, 2717, SEEK_SET) = 2717 close(3) = 0 open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 3 lseek(3, 0, SEEK_CUR) = 0 … The lookup function implementation in nss/nss_files/files-XXX.c:DB_LOOKUP has code to prevent that. It is supposed skip closing the input file if it was already open. /* Reset file pointer to beginning or open file. */ \ status = internal_setent (keep_stream); \ \ if (status == NSS_STATUS_SUCCESS) \ { \ /* Tell getent function that we have repositioned the file pointer. */ \ last_use = getby; \ \ while ((status = internal_getent (result, buffer, buflen, errnop \ H_ERRNO_ARG EXTRA_ARGS_VALUE)) \ == NSS_STATUS_SUCCESS) \ { break_if_match } \ \ if (! keep_stream) \ internal_endent (); \ } \ keep_stream is initialized from the stayopen flag in internal_setent. internal_setent is called from the set*ent implementation as: status = internal_setent (stayopen); However, for non-host database, this flag is always 0, per the STAYOPEN magic in nss/getXXent_r.c. Thus, the fix is this: - status = internal_setent (stayopen); + status = internal_setent (1); This is not a behavioral change even for the hosts database (where the application can specify the stayopen flag) because with a call to sethostent(0), the file handle is still not closed in the implementation of gethostent.
2015-04-28Fix ldbl-128 roundl for exponents in [31, 47] (bug 18346).Joseph Myers
The implementation of roundl for ldbl-128 involves undefined behavior for arguments with exponents from 31 to 47 inclusive, from the shift: u_int64_t i = -1ULL >> (j0 - 48); For example, on mips64, this means roundl (0xffffffffffff.8p0L) wrongly returns its argument, which is not an integer. A condition checking for exponents < 31 should actually be checking for exponents < 48, and this patch makes it do so. (That condition is for whether the bit representing 0.5 is in the high 64-bit half of the floating-point number. The value 31 might have arisen from an incorrect conversion of the ldbl-96 version to handle ldbl-128.) This was originally reported as a GCC libquadmath bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65757>. Tested for mips64; also tested for x86_64 and x86 to make sure the new tests pass there. [BZ #18346] * sysdeps/ieee754/ldbl-128/s_roundl.c (__roundl): Handle all exponents less than 48 as cases where high part of mantissa needs examining to determine whether argument is integral. * math/libm-test.inc (round_test_data): Add more tests.
2015-04-28elf.h SHF_EXCLUDE signed int 31 bit shift triggers undefined behaviour.Mark Wielaard
Any use of SHF_EXCLUDE in code that tries to check it against sh_flags will trigger undefined behaviour because it is defined as a 31 bit shift against an signed integer. Fix by explicitly using an unsigned int.
2015-04-27Update sparc localplt.dataDavid S. Miller
* sysdeps/unix/sysv/linux/sparc/sparc32/localplt.data: Remove __tls_get_addr. * sysdeps/unix/sysv/linux/sparc/sparc64/localplt.data: Likewise.
2015-04-27Check tzspec_len == 0 in __tzfile_readH.J. Lu
[BZ#18333] * time/tzset.c (__tzfile_read): Check tzspec_len == 0.
2015-04-27test-skeleton: Support temporary files without memory leaks [BZ#18333]Florian Weimer
add_temp_file now makes a copy which is freed by delete_temp_files. Callers to create_temp_file can now free the returned file name to avoid the memory leak. These changes do not affect the leak behavior of existing code. Also address a NULL pointer derefence in tzset after a memoru allocation failure, found during testing.
2015-04-24posix_fallocate, posix_fallocate64 stub: Do not set errnoFlorian Weimer
These functions return an error code.
2015-04-24ARM: Define PI_STATIC_AND_HIDDEN.Roland McGrath
2015-04-24Make time zone file parser more robust [BZ #17715]Florian Weimer
2015-04-24Do not build with -WinlineFlorian Weimer
-Winline causes architecture- and optimization-dependent build failures due to -Werror. -Winline warns about inlining decisions based on branch hints, in effect preventing the use of inline functions in header files (because they might be called on unlikely branches, leading to a decision not to inline). The option was apparently added to the glibc build at a time when GCC did not support the always_inline attribute. With current GCC versions, inlining failure for functions declared always_inline will receive a warning under -Wattributes, which is enabled by default, so -Winline appears unnecessary.
2015-04-24S/390: Regenerate ULPsStefan Liebler
2015-04-24S/390: Get cache information via sysconfStefan Liebler
This patch adds support to query cache information on s390 via sysconf() function - e.g. with _SC_LEVEL1_ICACHE_SIZE. The attributes size, linesize and assoc can be queried for cache level 1 - 4 via "extract cpu attribute" instruction, which was first available with z10. * NEWS: Mention sysconf() cache information support for s390. * sysdeps/unix/sysv/linux/s390/sysconf.c: New File.
2015-04-22Use __copysign rather than copysign.Wilco Dijkstra
2015-04-21CVE-2015-1781: resolv/nss_dns/dns-host.c buffer overflow [BZ#18287]Arjun Shankar
2015-04-20libc-vdso.h place consolidationAdhemerval Zanella
This patch moves the libc-vdso.h internal header from bits folder to default architecture one and also corrects the remaning includes in the files.
2015-04-19Better fix for setenv (..., NULL, ...)Paul Eggert
* stdlib/setenv.c (__add_to_environ): Dump core quickly if setenv (..., NULL, ...) is called. This time, do it the right way, and pacify GCC with a pragma.
2015-04-17Avoid confusing compiler with dynamically impossible statically invalid ↵Roland McGrath
dereference in _dl_close_worker.
2015-04-17Fuller check for invalid NSID in _dl_open.Roland McGrath
2015-04-17Sparc memchr/memcmp/strncmp fixes from Il'ya Malakhov.David S. Miller
[BZ #17825] * sysdeps/sparc/sparc64/memchr.S: Fix signedness handling of length. * sysdeps/sparc/sparc64/memcmp.S: Likewise. * sysdeps/sparc/sparc64/strncmp.S: Likewise.
2015-04-17Add arm-nacl port.Roland McGrath
2015-04-16Convert sparc over to lowlevellock-futex.hDavid S. Miller
* sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Make use of lowlevellock-futex.h
2015-04-16tile: Enable PI_STATIC_AND_HIDDENChris Metcalf
This does make ld.so very slightly larger (0.3%) and doesn't seem to actually improve performance; in fact, my limited testing suggested a slight (0.1%) performance decrease (running fork/exec of a no-op program in a loop), but I didn't do enough testing to establish statistical significance. However, Roland agrees that it makes sense to switch tile to using this path, since it's the more standard way.
2015-04-15powerpc: Fix __wcschr static buildAdhemerval Zanella
This patch fix the static build for strftime, which uses __wcschr. Current powerpc32 implementation defines the __wcschr be an alias to __wcschr_ppc32 and current implementation misses the correct alias for static build. It also changes the default wcschr.c logic so a IFUNC implementation should just define WCSCHR and undefine the required alias/internal definitions.
2015-04-15Rebuilt fresh sparc ULPS to get rid of removed tests.David S. Miller
* sysdeps/sparc/fpu/libm-test-ulps: Regenerate from scratch.
2015-04-13Use correct signedness in wcsncmpStefan Liebler
[BZ #18206] * wcsmbs/wcsncmp.c (wcsncmp): Compare as wchar_t, not wint_t. Use signed comparision instead of substraction to avoid overflow bug. * localedata/tests-mbwc/tst_wcsncmp.c (tst_wcsncmp): Take the sign of ret. * localedata/tests-mbwc/dat_wcsncmp.c (tst_wcsncmp_loc): Do not expect precise return values. Only the sign matters. * wcsmbs/Makefile (strop-tests): Add wcsncmp. * wcsmbs/test-wcsncmp.c: New File. * string/test-strncmp.c: Add wcsncmp support.
2015-04-13Set errno for log1p on pole/domain error.Stefan Liebler
According to bug 6792, errno is not set to ERANGE/EDOM by calling log1p/log1pf/log1pl with x = -1 or x < -1. This patch adds a wrapper which sets errno in those cases and returns the value of the existing __log1p function. The log1p is now an alias to the wrapper function instead of __log1p. The files in sysdeps are reflecting these changes. The ia64 implementation sets errno by itself, thus the wrapper-file is empty. The libm-test is adjusted for log1p-tests to check errno. [BZ #6792] * math/w_log1p.c: New file. * math/w_log1pf.c: Likewise. * math/w_log1pl.c: Likewise. * math/Makefile (libm-calls): Add w_log1p. * math/s_log1pl.c (log1pl): Remove weak_alias. * sysdeps/i386/fpu/s_log1p.S (log1p): Likewise. * sysdeps/i386/fpu/s_log1pf.S (log1pf): Likewise. * sysdeps/i386/fpu/s_log1pl.S (log1pl): Likewise. * sysdeps/x86_64/fpu/s_log1pl.S (log1pl): Likewise. * sysdeps/ieee754/dbl-64/s_log1p.c (log1p): Likewise. [NO_LONG_DOUBLE] (log1pl): Likewise. * sysdeps/ieee754/flt-32/s_log1pf.c (log1pf): Likewise. * sysdeps/ieee754/ldbl-128/s_log1pl.c (log1pl): Likewise. * sysdeps/ieee754/ldbl-64-128/s_log1pl.c (log1p): Remove long_double_symbol. * sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (log1pl): Likewise. * sysdeps/ieee754/ldbl-64-128/w_log1pl.c: New file. * sysdeps/ieee754/ldbl-128ibm/w_log1pl.c: Likewise. * sysdeps/m68k/m680x0/fpu/s_log1p.c: Define empty weak_alias to remove weak_alias for corresponding log1p function. * sysdeps/m68k/m680x0/fpu/s_log1pf.c: Likewise. * sysdeps/m68k/m680x0/fpu/s_log1pl.c: Likewise. * sysdeps/ia64/fpu/w_log1p.c: New file. * sysdeps/ia64/fpu/w_log1pf.c: Likewise. * sysdeps/ia64/fpu/w_log1pl.c: Likewise. * math/libm-test.inc (log1p_test_data): Add errno expectations.
2015-04-10Update tst_mbrlen/tst_mbrtowc for mblen changeStefan Liebler
commit 9781a370023952383028e07399fd196a889bb2be changed the expected results for mbrlen in case of passing n=0 to -2. The initialization of tst_mbrlen_loc and tst_mbrtowc should be updated accordingly. * tests-mbwc/dat_mbrlen.c (tst_mbrlen_loc): Change expected result to -2 in case of n == 0. * tests-mbwc/tst_mbrtowc.c (tst_mbrtowc): Check result against -2 instead of 0.
2015-04-10Fix strtof decimal rounding close to half least subnormal (bug 18247).Joseph Myers
Bug 18247 is an off-by-one error in strtof's determination of a decimal exponent such that any value with that decimal exponent is at most half the least subnormal and so the appropriate underflowing value for the rounding mode can be determined with no multiple-precision computations. (Whether the value is in fact safe despite the off-by-one depends on the floating-point format in question. It's wrong for float and for m68k ldbl-96 but not for other supported formats.) This patch corrects the computation of the exponent in question to be safe in general, adding a comment explaining the new computation. Tested for x86_64. [BZ #18247] * stdlib/strtod_l.c (____STRTOF_INTERNAL): Decrease minimum decimal exponent by 1. * stdlib/tst-strtod-round-data: Add more tests. * stdlib/tst-strtod-round.c (tests): Regenerated.
2015-04-09Add more tests of clog and clog10.Joseph Myers
This patch adds some randomly-generated tests of clog and clog10 that are observed to increase ulps on x86_64. Tested for x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add more tests of clog and clog10. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-04-09Omit libc-modules.h for all .v.i files.Roland McGrath
2015-04-09Let non-add-on preconfigure scripts set libc_config_ok.Roland McGrath
2015-04-09Make test-skeleton.c grok TEST_DIRECT magic environment variable.Roland McGrath
2015-04-09scratch_buffer: Suppress truncation warning on 32-bitFlorian Weimer
2015-04-08Update SPARC ulps.David S. Miller
* sysdeps/sparc/fpu/libm-test-ulps: Update.
2015-04-08Add more tests of atanh.Joseph Myers
This patch adds some randomly-generated tests of atanh that are observed to increase ulps on x86_64. Tested for x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add more tests of atanh. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-04-08Add more tests of atan.Joseph Myers
This patch adds some randomly-generated tests of atan that are observed to increase ulps on x86_64. Tested for x86_64 and x86 and ulps updated accordingly. * math/auto-libm-test-in: Add more tests of atan. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-04-08nscd_getgr_r: Use struct scratch_buffer instead of extend_allocaFlorian Weimer
The lack of alloca accounting means that the old code could run out of stack space if multiple retries are needed.
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