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2017-10-01Mark internal statfs functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal statfs functions with attribute_hidden to allow direct access within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * include/sys/statfs.h (__fstatfs): Add attribute_hidden. (__statfs64): Likewise. (__fstatfs64): Likewise. * include/sys/statvfs.h (__statvfs64): Likewise. (__fstatvfs64): Likewise. * sysdeps/unix/sysv/linux/pathconf.h (__statfs_link_max): Likewise. (__statfs_filesize_max): Likewise. (__statfs_symlinks): Likewise. (__statfs_chown_restricted): Likewise.
2017-10-01Mark internal time functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal time functions with attribute_hidden to allow direct access within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * include/time.h (__tzstring): Add attribute_hidden. (__tzfile_read): Likewise. (__tzfile_compute): Likewise. (__tzfile_default): Likewise. (__tzset_parse_tz): Likewise. (__offtime): Likewise. (__asctime_r): Likewise. (__tzset): Likewise. (__tz_convert): Likewise. (__getdate_r): Likewise. (__getclktck): Likewise.
2017-10-01Mark internal nscd functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal nscd functions with attribute_hidden to allow direct access within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * nscd/nscd-client.h (__nscd_get_map_ref): Add attribute_hidden. (__nscd_unmap): Likewise. (__nscd_cache_search): Likewise. (__nscd_get_nl_timestamp): Likewise. (__nscd_getpwnam_r): Likewise. (__nscd_getpwuid_r): Likewise. (__nscd_getgrnam_r): Likewise. (__nscd_getgrgid_r): Likewise. (__nscd_gethostbyname_r): Likewise. (__nscd_gethostbyname2_r): Likewise. (__nscd_gethostbyaddr_r): Likewise. (__nscd_getai): Likewise. (__nscd_getgrouplist): Likewise. (__nscd_getservbyname_r): Likewise. (__nscd_getservbyport_r): Likewise. (__nscd_innetgr): Likewise. (__nscd_setnetgrent): Likewise.
2017-10-01Mark internal gmp functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal gmp functions with attribute_hidden to allow direct access within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * include/gmp.h: Declare internal functions only if _ISOMAC is undefined. (__mpn_extract_double): Add attribute_hidden. (__mpn_extract_long_double): Likewise. (__mpn_extract_float128): Likewise. (__mpn_construct_float): Likewise. (__mpn_construct_double): Likewise. (__mpn_construct_long_double): Likewise. (__mpn_construct_float128): Likewise. (mpn_add_1): Likewise. (mpn_addmul_1): Likewise. (mpn_add_n): Likewise. (mpn_cmp): Likewise. (mpn_divrem): Likewise. (mpn_lshift): Likewise. (mpn_mul): Likewise. (mpn_mul_1): Likewise. (mpn_rshift): Likewise. (mpn_sub_1): Likewise. (mpn_submul_1): Likewise. (mpn_sub_n): Likewise.
2017-10-01Mark internal wchar functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal wchar functions with attribute_hidden to allow direct access within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * include/wchar.h (__wcsnlen): Add attribute_hidden. (__wcscat): Likewise. (__btowc): Likewise. (__wcrtomb): Likewise. (__mbsrtowcs): Likewise. (__wcsrtombs): Likewise. (__mbsnrtowcs): Likewise. (__wcsnrtombs): Likewise. (__wcsncpy): Likewise. (__wcpncpy): Likewise. (__wmemcpy): Likewise. (__wmempcpy): Likewise. (__wmemmove): Likewise. (__wcschrnul): Likewise. (__vfwscanf): Likewise. (__vswprintf): Likewise. (__fwprintf): Likewise. (__vfwprintf): Likewise.
2017-10-01Mark internal grp/pwd/shadow functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal grp/pwd/shadow functions with attribute_hidden to allow direct access within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * include/grp.h (__fgetgrent_r): Add attribute_hidden. (__getgrgid_r): Likewise. (__getgrnam_r): Likewise. * include/pwd.h (__getpwuid_r): Likewise. (__getpwnam_r): Likewise. (__fgetpwent_r): Likewise. * include/shadow.h (__getspnam_r): Likewise. (__sgetspent_r): Likewise. (__fgetspent_r): Likewise.
2017-10-01Mark internal unistd functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal unistd functions with attribute_hidden to allow direct access to them within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * include/unistd.h (__access): Add attribute_hidden. (__lseek64): Likewise. (__libc_pread64): Likewise. (__pipe2): Likewise. (__sleep): Likewise. (__chdir): Likewise. (__fchdir): Likewise. (__getcwd): Likewise. (__rmdir): Likewise. (__execvpe): Likewise. (__execve): Likewise. (__setsid): Likewise. (__getuid): Likewise. (__geteuid): Likewise. (__getgid): Likewise. (__getegid): Likewise. (__getgroups): Likewise. (__group_member): Likewise. (__ttyname_r): Likewise. (__isatty): Likewise. (__readlink): Likewise. (__unlink): Likewise. (__gethostname): Likewise. (__profil): Likewise. (__getdtablesize): Likewise. (__brk): Likewise. (__ftruncate): Likewise. (__ftruncate64): Likewise.
2017-10-01Mark internal argp functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal argp functions with attribute_hidden to allow direct access to them within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * argp/argp-fmtstream.c: Include <argp-fmtstream.h>. * argp/argp-fs-xinl.c: Likewise. * argp/argp-help.c: Include <argp.h> and <argp-fmtstream.h>. * argp/argp-parse.c: Include <argp.h>. * argp/argp-xinl.c: Likewise. * include/argp-fmtstream.h: New file. * include/argp.h (__argp_error): Add attribute_hidden. (__argp_failure): Likewise. (__argp_input): Likewise. (__argp_state_help): Likewise.
2017-10-01Mark ____wcsto*_l_internal functions with attribute_hidden [BZ #18822]H.J. Lu
Mark ____wcsto*_l_internal functions with attribute_hidden to allow direct access to them within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * include/wchar.h (____wcstof_l_internal): New prototype. (____wcstod_l_internal): Likewise. (____wcstold_l_internal): Likewise. (____wcstol_l_internal): Likewise. (____wcstoul_l_internal): Likewise. (____wcstoll_l_internal): Likewise. (____wcstoull_l_internal): Likewise. (____wcstof128_l_internal): Likewise. * sysdeps/ieee754/float128/wcstof128.c (____wcstof128_l_internal): Removed. * sysdeps/ieee754/float128/wcstof128_l.c (____wcstof128_l_internal): Likewise. * wcsmbs/wcstod.c (____wcstod_l_internal): Likewise. * wcsmbs/wcstod_l.c (____wcstod_l_internal): Likewise. * wcsmbs/wcstof.c (____wcstof_l_internal): Likewise. * wcsmbs/wcstof_l.c (____wcstof_l_internal): Likewise. * wcsmbs/wcstol_l.c (____wcstol_l_internal): Likewise. * wcsmbs/wcstold.c (____wcstold_l_internal): Likewise. * wcsmbs/wcstold_l.c (____wcstold_l_internal): Likewise. * wcsmbs/wcstoll_l.c (____wcstoll_l_internal): Likewise. * wcsmbs/wcstoul_l.c (____wcstoul_l_internal): Likewise. * wcsmbs/wcstoull_l.c (____wcstoull_l_internal): Likewise.
2017-10-01Mark __internal_statvfs[64] with attribute_hidden [BZ #18822]H.J. Lu
Mark __internal_statvfs[64] with attribute_hidden to allow direct access to them within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * sysdeps/unix/sysv/linux/fstatvfs.c: Include "internal_statvfs.h" instead of <sys/statvfs.h>. (__internal_statvfs): Removed. * sysdeps/unix/sysv/linux/fstatvfs64.c Include "internal_statvfs.h" instead of <sys/statvfs.h>. (__internal_statvfs64): Removed. * sysdeps/unix/sysv/linux/internal_statvfs.c: Include "internal_statvfs.h" instead of <sys/statvfs.h>. * sysdeps/unix/sysv/linux/internal_statvfs.h: New file. * sysdeps/unix/sysv/linux/statvfs.c Include "internal_statvfs.h" instead of <sys/statvfs.h>. (__internal_statvfs): Removed. * sysdeps/unix/sysv/linux/statvfs64.c Include "internal_statvfs.h" instead of <sys/statvfs.h>. (__internal_statvfs64): Removed.
2017-10-01Mark internal functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal functions with attribute_hidden to allow direct access to internal functions within libc.so and libc.a without using GOT nor PLT. Size comparison of libc.so: On x86-64: text data bss dec hex Before: 1728577 20584 17088 1766249 1af369 After : 1728593 20584 17088 1766265 1af379 The only change is __gconv_release_shlib in iconv/gconv_dl.c is inlined since it is hidden, which increases the code size of gconv_dl.os by 18 bytes. On i686: text data bss dec hex Before: 1869039 11444 11112 1891595 1cdd0b After : 1868635 11444 11112 1891191 1cdb77 The code size is decreased by avoiding GOT/PLT for hidden functions. [BZ #18822] * iconv/gconv_int.h (__gconv_open): Add attribute_hidden. (__gconv_close): Likewise. (__gconv): Likewise. (__gconv_find_transform): Likewise. (__gconv_lookup_cache): Likewise. (__gconv_compare_alias_cache): Likewise. (__gconv_load_cache): Likewise. (__gconv_get_path): Likewise. (__gconv_close_transform): Likewise. (__gconv_release_cache): Likewise. (__gconv_find_shlib): Likewise. (__gconv_release_shlib): Likewise. (__gconv_get_builtin_trans): Likewise. (__gconv_compare_alias): Likewise. * include/dlfcn.h (_dlerror_run): Likewise. * include/stdio.h (__fortify_fail_abort): Likewise. * include/time.h (__tz_compute): Likewise. (__strptime_internal): Likewise. * intl/gettextP.h (_nl_find_domain): Likewise. (_nl_load_domain): Likewise. (_nl_find_msg): Likewise. * intl/plural-exp.h (FREE_EXPRESSION): Likewise. (EXTRACT_PLURAL_EXPRESSION): Likewise. * locale/coll-lookup.h (__collidx_table_lookup): Likewise. * resolv/gai_misc.h (__gai_enqueue_request): Likewise. (__gai_find_request): Likewise. (__gai_remove_request): Likewise. (__gai_notify): Likewise. (__gai_notify_only): Likewise. * sysdeps/generic/aio_misc.h (__aio_sigqueue): Likewise. * sysdeps/generic/ldsodefs.h (_dl_fini): Likewise. (_dl_non_dynamic_init): Likewise. (_dl_aux_init): Likewise. * sysdeps/i386/machine-gmon.h (mcount_internal): Likewise. * sysdeps/unix/sysv/linux/i386/olddirent.h (__old_getdents64): Likewise. * wcsmbs/wcsmbsload.h (__wcsmbs_load_conv): Likewise. (__wcsmbs_clone_conv): Likewise. (__wcsmbs_named_conv): Likewise.
2017-10-01Mark internal stdlib functions with attribute_hidden [BZ #18822]H.J. Lu
Mark internal stdlib functions with attribute_hidden to allow direct access within libc.so and libc.a without using GOT nor PLT. __realpath is hidden with libc_hidden_proto and libc_hidden_def since the exported realpath is an alias of __realpath. [BZ #18822] * include/stdlib.h (__random): Add attribute_hidden. (__random_r): Likewise. (__srandom_r): Likewise. (__initstate_r): Likewise. (__setstate_r): Likewise. (__erand48_r): Likewise. (__nrand48_r): Likewise. (__jrand48_r): Likewise. (__srand48_r): Likewise. (__seed48_r): Likewise. (__lcong48_r): Likewise. (__drand48_iterate): Likewise. (__setenv): Likewise. (__unsetenv): Likewise. (__clearenv): Likewise. (__ptsname_r): Likewise. (__posix_openpt): Likewise. (__add_to_environ): Likewise. (__realpath): Add libc_hidden_proto. (__ecvt_r): Likewise. (__fcvt_r): Likewise. (__qecvt_r): Likewise. (__qfcvt_r): Likewise. * misc/efgcvt_r.c (cvt_symbol_1): Add libc_hidden_def (local). * stdlib/canonicalize.c (__realpath): Add libc_hidden_def.
2017-10-01Mark 3 *_internal functions with attribute_hidden [BZ #18822]H.J. Lu
Mark __ptsname_internal, __mktime_internal and __fopen_internal with attribute_hidden to allow direct access to them within libc.so and libc.a without using GOT nor PLT. [BZ #18822] * include/stdlib.h (__ptsname_internal): Add attribute_hidden. * include/time.h (__mktime_internal): Likewise. * libio/iolibio.h (__fopen_internal): Likewise.
2017-10-01Fix return pointer save and PIC register restore in __getcontext andJohn David Anglin
__setcontext on hppa. * sysdeps/unix/sysv/linux/hppa/getcontext.S (__getcontext): Save return pointer in frame. * sysdeps/unix/sysv/linux/hppa/setcontext.S (__setcontext): Likewise. Correct offset used to restore PIC register.
2017-09-30Fix hppa text relocations in libc.soJohn David Anglin
[BZ libc/22165] * sysdeps/unix/sysv/linux/hppa/getcontext.S (__getcontext): Use PIC code to load address of __getcontext_ret when generating PIC code.
2017-09-30Add a test for non-PIE static executableH.J. Lu
tst-tls1-static-non-pie is built with $(no-pie-ldflag) to make it a non-PIE static executable, regardless if --enable-static-pie is used to configure glibc. * elf/Makefile (tests-static-internal): Add tst-tls1-static-non-pie. (LDFLAGS-tst-tls1-static-non-pie): New. * elf/tst-tls1-static-non-pie.c: New file.
2017-09-29Use libm_alias_double for some dbl-64 functions.Joseph Myers
Continuing the move of libm aliases to common macros that can create _FloatN / _FloatNx aliases in future, this patch converts some dbl-64 functions to using libm_alias_double, thereby eliminating the need for some ldbl-opt wrappers. This patch deliberately limits what functions are converted so that it can be verified by comparison of stipped binaries. Specifically, atan and tan are excluded because they first need converting to being weak aliases; fma is omitted as it has additional complications with versions in other directories (removing the ldbl-opt version can e.g. cause the ldbl-128 version to be used instead of dbl-64); and functions that have both dbl-64/wordsize-64 and ldbl-opt versions are excluded because ldbl-opt currently always wraps dbl-64 function versions, so changing those will result in platforms using both ldbl-opt and dbl-64/wordsize-64 (i.e. alpha) starting to use the dbl-64/wordsize-64 versions of those functions (which is good, as an optimization, but still best separated from the present patch to get better validation). Tested for x86_64, and tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by the patch. * sysdeps/ieee754/dbl-64/s_asinh.c: Include <libm-alias-double.h>. (asinh): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_cbrt.c: Include <libm-alias-double.h>. (cbrt): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_copysign.c: Include <libm-alias-double.h>. (copysign): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_erf.c: Include <libm-alias-double.h>. (erf): Define using libm_alias_double. (erfc): Likewise. * sysdeps/ieee754/dbl-64/s_expm1.c: Include <libm-alias-double.h>. (expm1): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_fabs.c: Include <libm-alias-double.h>. (fabs): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_fromfp.c (fromfp): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_fromfp_main.c: Include <libm-alias-double.h>. * sysdeps/ieee754/dbl-64/s_fromfpx.c (fromfpx): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_getpayload.c: Include <libm-alias-double.h>. (getpayload): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_llrint.c: Include <libm-alias-double.h>. (llrint): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_lrint.c: Include <libm-alias-double.h>. (lrint): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_nextup.c: Include <libm-alias-double.h>. (nextup): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_roundeven.c: Include <libm-alias-double.h>. (roundeven): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_setpayload.c (setpayload): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_setpayload_main.c: Include <libm-alias-double.h>. * sysdeps/ieee754/dbl-64/s_setpayloadsig.c (setpayloadsig): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_sin.c: Include <libm-alias-double.h>. (cos): Define using libm_alias_double. (sin): Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c: Include <libm-alias-double.h>. (sincos): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_tanh.c: Include <libm-alias-double.h>. (tanh): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_totalorder.c: Include <libm-alias-double.h>. (totalorder): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_totalordermag.c: Include <libm-alias-double.h>. (totalordermag): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_ufromfp.c (ufromfp): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/s_ufromfpx.c (ufromfpx): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/wordsize-64/s_getpayload.c: Include <libm-alias-double.h>. (getpayload): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/wordsize-64/s_roundeven.c: Include <libm-alias-double.h>. (roundeven): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/wordsize-64/s_setpayload_main.c: Include <libm-alias-double.h>. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c: Include <libm-alias-double.h>. (totalorder): Define using libm_alias_double. * sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c: Include <libm-alias-double.h>. (totalordermag): Define using libm_alias_double. * sysdeps/ieee754/ldbl-opt/s_copysign.c (copysignl): Only define libc compat symbol here. * sysdeps/ieee754/ldbl-opt/s_asinh.c: Remove file. * sysdeps/ieee754/ldbl-opt/s_cbrt.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_erf.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_expm1.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_fabs.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_llrint.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_lrint.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_sin.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_sincos.c: Likewise. * sysdeps/ieee754/ldbl-opt/s_tanh.c: Likewise.
2017-09-29arm: Update elf_machine_load_address for static PIEH.J. Lu
When --enable-static-pie is used to configure glibc, we need to use _dl_relocate_static_pie to compute load address in static PIE. * sysdeps/arm/dl-machine.h (elf_machine_load_address): Use _dl_relocate_static_pie instead of _dl_start to compute load address in static PIE. Return 0 if _DYNAMIC is undefined for static executable.
2017-09-29mips: Update elf_machine_load_address for static PIEH.J. Lu
mips uses a local label to compute load address, which works with static PIE. We just need to return 0 if _DYNAMIC is undefined for static executable. * sysdeps/mips/dl-machine.h (elf_machine_dynamic): Return 0 if _DYNAMIC is undefined for static executable.
2017-09-29arm: Check PIC instead of SHARED in start.SH.J. Lu
Since start.o may be compiled as PIC, we should check PIC instead of SHARED. * sysdeps/arm/start.S (_start): Check PIC instead of SHARED.
2017-09-29Update x86_64 libm-test-ulps.Joseph Myers
* sysdeps/x86_64/fpu/libm-test-ulps: Update.
2017-09-29Use fabs(f/l) rather than __fabsWilco Dijkstra
A few math functions still use __fabs(f/l) rather than fabs, which means they won't be inlined. Rename them so they are inlined. Also add -fno-builtin-fabsl to nofpu powerpc makefile to work around BZ #29253. * sysdeps/ieee754/dbl-64/e_lgamma_r.c (__ieee754_lgamma_r): Use fabs rather than __fabs. * sysdeps/ieee754/dbl-64/e_log10.c (__ieee754_log10): Likewise. * sysdeps/ieee754/dbl-64/e_log2.c (__ieee754_log2): Likewise. * sysdeps/ieee754/flt-32/e_lgammaf_r.c (__ieee754_lgammaf_r): Use fabsf rather than __fabsf. * sysdeps/ieee754/flt-32/e_log10f.c (__ieee754_log10f): Likewise. * sysdeps/ieee754/flt-32/e_log2f.c (__ieee754_log2f): Likewise. * sysdeps/ieee754/ldbl-128/e_lgammal_r.c (__ieee754_lgammal_r): Use fabsl rather than __fabsl. * sysdeps/ieee754/ldbl-128/e_log10l.c (__ieee754_log10l): Likewise. * sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_lgammal_r.c (__ieee754_lgammal_r): Use fabsl rather than __fabsl. * sysdeps/ieee754/ldbl-128ibm/e_log10l.c (__ieee754_log10l): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l): Likewise. * sysdeps/powerpc/nofpu/Makefile: Add -fno-builtin-fabsl for BZ #29253.
2017-09-29Remove old cimag inlinesWilco Dijkstra
Remove old cimag inlines that are only used in GCC 2.96 or older. * math/bits/cmathcalls.h (cimag): Remove inline. (creal): Remove inline. (conj): Remove inline.
2017-09-29New generic powfSzabolcs Nagy
without wrapper on aarch64: powf reciprocal-throughput: 4.2x faster powf latency: 2.6x faster old worst-case error: 1.11 ulp new worst-case error: 0.82 ulp aarch64 .text size: -780 bytes aarch64 .rodata size: +144 bytes powf(x,y) is implemented as exp2(y*log2(x)) with the same algorithms that are used in exp2f and log2f, except that the log2f polynomial is larger for extra precision and its output (and exp2f input) may be scaled by a power of 2 (POWF_SCALE) to simplify the argument reduction step of exp2 (possible when efficient round and convert toint operation is available). The special case handling tries to minimize the checks in the hot path. When the input of exp2_inline is checked, int arithmetics is used as that was faster on the tested aarch64 cores. * math/Makefile (type-float-routines): Add e_powf_log2_data. * sysdeps/ieee754/flt-32/e_powf.c: New implementation. * sysdeps/ieee754/flt-32/e_powf_log2_data.c: New file. * sysdeps/ieee754/flt-32/math_config.h (__powf_log2_data): Define. (issignalingf_inline): Likewise. (POWF_LOG2_TABLE_BITS): Likewise. (POWF_LOG2_POLY_ORDER): Likewise. (POWF_SCALE_BITS): Likewise. (POWF_SCALE): Likewise. * sysdeps/i386/fpu/e_powf_log2_data.c: New file. * sysdeps/ia64/fpu/e_powf_log2_data.c: New file. * sysdeps/m68k/m680x0/fpu/e_powf_log2_data.c: New file.
2017-09-29New generic log2fSzabolcs Nagy
Similar to the new logf: double precision arithmetics and a small lookup table is used. The argument reduction step is the same as in the new logf. without wrapper on aarch64: log2f reciprocal-throughput: 2.3x faster log2f latency: 2.1x faster old worst case error: 1.72 ulp new worst case error: 0.75 ulp aarch64 .text size: -252 bytes aarch64 .rodata size: +244 bytes * math/Makefile (type-float-routines): Add e_log2f_data. * sysdeps/ieee754/flt-32/e_log2f.c: New implementation. * sysdeps/ieee754/flt-32/e_log2f_data.c: New file. * sysdeps/ieee754/flt-32/math_config.h (__log2f_data): Define. (LOG2F_TABLE_BITS, LOG2F_POLY_ORDER): Define. * sysdeps/i386/fpu/e_log2f_data.c: New file. * sysdeps/ia64/fpu/e_log2f_data.c: New file. * sysdeps/m68k/m680x0/fpu/e_log2f_data.c: New file.
2017-09-29missed ChangeLog entrySzabolcs Nagy
2017-09-29New generic logfSzabolcs Nagy
without wrapper on aarch64: logf reciprocal-throughput: 2.2x faster logf latency: 1.9x faster old worst case error: 0.89 ulp new worst case error: 0.82 ulp aarch64 .text size: -356 bytes aarch64 .rodata size: +240 bytes Uses double precision arithmetics and a lookup table to allow smaller polynomial and avoid the use of division. Data is in a separate translation unit with fixed layout to prevent the compiler generating suboptimal literal access. Errors are handled inline according to POSIX rules, but this patch keeps the wrapper with SVID compatible error handling. Needs libm-test-ulps adjustment for clogf in non-nearest rounding mode. * math/Makefile (type-float-routines): Add e_logf_data. * sysdeps/ieee754/flt-32/e_logf.c: New implementation. * sysdeps/ieee754/flt-32/e_logf_data.c: New file. * sysdeps/ieee754/flt-32/math_config.h (__logf_data): Define. (LOGF_TABLE_BITS, LOGF_POLY_ORDER): Define. * sysdeps/i386/fpu/e_logf_data.c: New file. * sysdeps/ia64/fpu/e_logf_data.c: New file. * sysdeps/m68k/m680x0/fpu/e_logf_data.c: New file.
2017-09-28x86: Allow undefined _DYNAMIC in static executableH.J. Lu
When --enable-static-pie is used to build static PIE, _DYNAMIC is used to compute the load address of static PIE. But _DYNAMIC is undefined when creating static executable. This patch makes _DYNAMIC weak in PIE libc.a so that it can be undefined. * sysdeps/i386/dl-machine.h (elf_machine_load_address): Allow undefined _DYNAMIC in PIE libc.a. * sysdeps/x86_64/dl-machine.h (elf_machine_load_address): Likewse.
2017-09-28Remove ancient __signbit inlinesWilco Dijkstra
Remove __signbit inlines from mathinline.h. Math.h already uses the builtin when supported, so additional inlines are only used on pre 4.0 GCCs. Similarly remove ancient copysign and fabs inlines. * sysdeps/alpha/fpu/bits/mathinline.h: Delete file. * sysdeps/ia64/fpu/bits/mathinline.h: Delete file. * sysdeps/m68k/coldfire/fpu/bits/mathinline.h: Delete file. * sysdeps/m68k/m680x0/fpu/bits/mathinline.h: (__signbitf): Remove. (__signbit): Remove. (__signbitl): Remove. * sysdeps/powerpc/bits/mathinline.h (__signbitf): Remove. (__signbit): Remove. (__signbitl): Remove. * sysdeps/s390/fpu/bits/mathinline.h: (__signbitf): Remove. (__signbit): Remove. (__signbitl): Remove * sysdeps/sparc/fpu/bits/mathinline.h (__signbitf): Remove. (__signbit): Remove. (__signbitl): Remove. * sysdeps/tile/bits/mathinline.h: Delete file. * sysdeps/x86/fpu/bits/mathinline.h (__signbitf): Remove. (__signbit): Remove. (__signbitl): Remove.
2017-09-28Simplify C99 isgreater macrosWilco Dijkstra
Simplify the C99 isgreater macros. Although some support was added in GCC 2.97, not all targets added support until GCC 3.1. Therefore only use the builtins in math.h from GCC 3.1 onwards, and defer to generic macros otherwise. Improve the generic isunordered macro to use compares rather than call fpclassify twice - this is not only faster but also correct for signaling NaNs. * math/math.h: Improve handling of C99 isgreater macros. * sysdeps/alpha/fpu/bits/mathinline.h: Remove isgreater macros. * sysdeps/m68k/m680x0/fpu/bits/mathinline.h: Likewise. * sysdeps/powerpc/bits/mathinline.h: Likewise. * sysdeps/sparc/fpu/bits/mathinline.h: Likewise. * sysdeps/x86/fpu/bits/mathinline.h: Likewise.
2017-09-28AArch64: update libm-test-ulpsSzabolcs Nagy
Update for new expf and logf. * sysdeps/aarch64/libm-test-ulps: Update.
2017-09-28Fix nearbyint arithmetic moved before feholdexcept (bug 22225).Joseph Myers
In <https://sourceware.org/ml/libc-alpha/2013-05/msg00722.html> I remarked on the possibility of arithmetic in various nearbyint implementations being scheduled before feholdexcept calls, resulting in spurious "inexact" exceptions. I'm now actually observing this occurring in glibc built for ARM with GCC 7 (in fact, both copies of the same addition/subtraction sequence being combined and moved out before the conditionals and feholdexcept/fesetenv pairs), resulting in test failures. This patch makes the nearbyint implementations with this particular feholdexcept / arithmetic / fesetenv pattern consistently use math_opt_barrier on the function argument when first used in arithmetic, and also consistently use math_force_eval before fesetenv (the latter was generally already done, but the dbl-64/wordsize-64 implementation used math_opt_barrier instead, and as math_opt_barrier's intended effect is through its output value being used, such a use that doesn't use the return value is suspect). Tested for x86_64 (--disable-multi-arch so more of these implementations get used), and for ARM in a configuration where I saw the problem scheduling. [BZ #22225] * sysdeps/ieee754/dbl-64/s_nearbyint.c (__nearbyint): Use math_opt_barrier on argument when doing arithmetic on it. * sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c (__nearbyint): Likewise. Use math_force_eval not math_opt_barrier after arithmetic. * sysdeps/ieee754/flt-32/s_nearbyintf.c (__nearbyintf): Use math_opt_barrier on argument when doing arithmetic on it. * sysdeps/ieee754/ldbl-128/s_nearbyintl.c (__nearbyintl): Likewise.
2017-09-27Update sysdeps/unix/sysv/linux/ifaddrs.cH.J. Lu
Fix ../sysdeps/unix/sysv/linux/ifaddrs.c:835:27: error: ‘getifaddrs’ aliased to undefined symbol ‘__getifaddrs’ weak_alias (__getifaddrs, getifaddrs) ^ ../sysdeps/unix/sysv/linux/ifaddrs.c:844:28: error: ‘freeifaddrs’ aliased to undefined symbol ‘__freeifaddrs’ weak_alias (__freeifaddrs, freeifaddrs) caused by commit 4009ddc69225d571772aaea597615a0c032e14ab Author: Samuel Thibault <samuel.thibault@ens-lyon.org> Date: Thu Sep 28 00:19:18 2017 +0200 hurd: Fix `getifaddrs' and `freeifaddrs' symbol exposition * sysdeps/unix/sysv/linux/ifaddrs.c (__getifaddrs): Add libc_hidden_def. (__freeifaddrs): Likewise.
2017-09-28hurd: Fix `getifaddrs' and `freeifaddrs' symbol expositionSamuel Thibault
from `freeaddrinfo'. `getifaddrs' and `freeifaddrs' are not in POSIX, they should not be exposed along `freeaddrinfo' (through `__check_pf') which is POSIX. * include/ifaddrs.h (__getifaddrs, __freeifaddrs): New declarations, and use libc_hidden_def on them. * inet/ifaddrs.c (__getifaddrs, __freeifaddrs): Use libc_hidden_def on them. * sysdeps/gnu/ifaddrs.c (__getifaddrs, __freeifaddrs): Likewise. * inet/check_pf.c (__check_pf): Use __getifaddrs and __freeifaddrs instead of getifaddrs and freeifaddrs.
2017-09-28hurd: Fix `seekdir' symbol exposition from `rewinddir'Samuel Thibault
`seekdir' is MISC || XOPEN, it should not be exposed along `rewinddir' which is POSIX. * include/dirent.h (__seekdir): New declaration. * sysdeps/mach/hurd/seekdir.c (seekdir): Rename to __seekdir and redefine as weak alias. * sysdeps/mach/hurd/rewinddir.c (__rewinddir): Use __seekdir instead of seekdir.
2017-09-28hurd: Fix `revoke' symbol exposition from `unlockpt'Samuel Thibault
`revoke' is MISC only, it should not be exposed along `unlockpt' which is XOPEN. * include/unistd.h (__revoke): New declaration. * misc/revoke.c (revoke): Rename to __revoke, and redefine as weak alias. * sysdeps/mach/hurd/revoke.c (revoke): Likewise. * sysdeps/unix/bsd/unlockpt.c (unlockpt): Use __revoke instead of revoke.
2017-09-28hurd: Fix dirfd symbol exposition from ftwSamuel Thibault
dirfd is XOPEN2K8 only, it should not be exposed along ftw which is earlier. * include/dirent.h (__dirfd): New declaration. * dirent/dirfd.c (dirfd): Rename to __dirfd, and redefine as weak alias. * sysdeps/posix/dirfd/dirfd.c (dirfd): Likewise. * sysdeps/mach/hurd/dirfd.c (dirfd): Likewise. * io/ftw.c (open_dir_stream, ftw_dir): Use __dirfd instead of dirfd.
2017-09-26Mark __dso_handle as hidden [BZ #18822]H.J. Lu
Since __dso_handle is always defined by either crtbegin.o from GCC or dso_handle.c, it should be marked as hidden and be passed directly. [BZ #18822] * dlfcn/modatexit.c (foo): Remove __dso_handle check. * dlfcn/modcxaatexit.c: Include <dso_handle.h>. (__dso_handle): Remove declaration. * dlfcn/tstatexit.c (__dso_handle): Removed. (main): Don't check __dso_handle. * dlfcn/tstcxaatexit.c (__dso_handle): Removed. (main): Don't check __dso_handle. * include/dso_handle.h: New file. * malloc/mtrace.c: Include <dso_handle.h>. (mtrace): Pass __dso_handle directly. * nptl/pthread_atfork.c: Include <dso_handle.h>. (__dso_handle): Remove declaration. (__pthread_atfork): Pass __dso_handle directly. * nptl/tst-atfork2mod.c: Include <dso_handle.h>. (__dso_handle): Removed. * posix/wordexp-test.c: Include <dso_handle.h>. (__dso_handle): Remove declaration. (__app_register_atfork): Pass __dso_handle directly. * stdlib/at_quick_exit.c: Include <dso_handle.h>. (__dso_handle): Remove declaration. (at_quick_exit): Pass __dso_handle directly. * stdlib/atexit.c: Include <dso_handle.h>. (__dso_handle): Remove declaration. (atexit): Pass __dso_handle directly. * stdlib/tst-tls-atexit-lib.c: Include <dso_handle.h>. (__dso_handle): Removed.
2017-09-26Fix make-syscalls.sh VDSO support for GCC 8.Joseph Myers
sysdeps/unix/make-syscalls.sh has support, used only by x32, for generating IFUNCs for kernel VDSO symbols. This support creates IFUNCs by setting symbol types manually, which is bad for debug info and does not work with current GCC mainline because it results in errors from the checks on types of function aliases. This patch fixes it to use the common __ifunc macro, which uses the ifunc attribute when available and so works with GCC mainline. Note however that the original error resulted from an indirect inclusion of a header declaring __gettimeofday from the generated sources, and using __ifunc now relies on such an indirect inclusion remaining as it means use of __typeof to determine the correct types. If glibc's headers change in such a way as to remove that indirect inclusion, it will become necessary to change the syscalls.list syntax for VDSO syscalls so the name of the header to include can be specified. Tested (compilation only) with build-many-glibcs.py that this fixes the build for x32 with GCC mainline. * sysdeps/unix/make-syscalls.sh: Use __ifunc to define symbols using VDSO.
2017-09-27Fix range check in do_tunable_update_valAlexey Makhalov
Current implementation of tunables does not set arena_max and arena_test values. Any value provided by glibc.malloc.arena_max and glibc.malloc.arena_test parameters is ignored. These tunables have minval value set to 1 (see elf/dl-tunables.list file) and undefined maxval value. In that case default value (which is 0. see scripts/gen-tunables.awk) is being used to set maxval. For instance, generated tunable_list[] entry for arena_max is: (gdb) p *cur $1 = {name = 0x7ffff7df6217 "glibc.malloc.arena_max", type = {type_code = TUNABLE_TYPE_SIZE_T, min = 1, max = 0}, val = {numval = 0, strval = 0x0}, initialized = false, security_level = TUNABLE_SECLEVEL_SXID_IGNORE, env_alias = 0x7ffff7df622e "MALLOC_ARENA_MAX"} As a result, any value of glibc.malloc.arena_max is ignored by TUNABLE_SET_VAL_IF_VALID_RANGE macro __type min = (__cur)->type.min; <- initialized to 1 __type max = (__cur)->type.max; <- initialized to 0! if (min == max) <- false { min = __default_min; max = __default_max; } if ((__type) (__val) >= min && (__type) (val) <= max) <- false { (__cur)->val.numval = val; (__cur)->initialized = true; } Assigning correct min/max values at a build time fixes a problem. Plus, a bit of optimization: Setting of default min/max values for the given type at a run time might be eliminated. * elf/dl-tunables.c (do_tunable_update_val): Range checking fix. * scripts/gen-tunables.awk: Set unspecified minval and/or maxval values to correct default value for given type.
2017-09-26Skip PT_DYNAMIC segment with p_filesz == 0 [BZ #22101]H.J. Lu
ELF objects generated with "objcopy --only-keep-debug" have Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align DYNAMIC 0x0+e28 0x0+200e40 0x0+200e40 0x0+ 0x0+1a0 RW 0x8 with 0 file size. ld.so should skip such PT_DYNAMIC segments. Without a PT_DYNAMIC segment the loading of the shared object will fail, and therefore ldd on such objects will also fail instead of crashing. This provides better diagnostics for tooling that is attempting to inspect the invalid shared objects which may just contain debug information. [BZ #22101] * elf/Makefile (tests): Add tst-debug1. ($(objpfx)tst-debug1): New. ($(objpfx)tst-debug1.out): Likewise. ($(objpfx)tst-debug1mod1.so): Likewise. * elf/dl-load.c (_dl_map_object_from_fd): Skip PT_DYNAMIC segment with p_filesz == 0. * elf/tst-debug1.c: New file. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2017-09-26Use generic __ifunc for SPARC.Joseph Myers
glibc fails to build with GCC mainline for SPARC because of the use of manually-created IFUNCs, which fail the tests of compatibility of function alias types. This patch changes sparc-ifunc.h to use the generic __ifunc in defining sparc_libm_ifunc. The generic __ifunc can use the GCC ifunc attribute when available, so ensuring type-correctness as well as better debug info than when setting symbol types in asm statements. Note that for this to fix the build with GCC mainline the GCC patch <https://gcc.gnu.org/ml/gcc-patches/2017-09/msg01779.html>, or building GCC with --enable-gnu-indirect-function, is also needed. Tested (compilation only) with build-many-glibcs.py (sparc64-linux-gnu and sparcv9-linux-gnu, with GCC 8 with the above patch, and also with GCC 7). * sysdeps/sparc/sparc-ifunc.h [!__ASSEMBLER__] (sparc_libm_ifunc): Define using __ifunc.
2017-09-26powerpc: Regenerate ULPs for expf() and exp2f()Tulio Magno Quites Machado Filho
Remove all entries for expf() and exp2f() and regenerate them. * sysdeps/powerpc/fpu/libm-test-ulps: Regenerate expf() and exp2f() values.
2017-09-26Fix ia64 executable stack default (bug 22156).Joseph Myers
As per https://gcc.gnu.org/ml/gcc-patches/2017-09/msg01220.html ia64 defaults to non-executable stacks in the Linux kernel (furthermore, the use of function descriptors means that trampolines for nested function pointers never need an executable stack). glibc however defines DEFAULT_STACK_PERMS to include PF_X for that architecture, meaning (a) elf/check-execstack fails and (b) (from code inspection, not tested, but this is why I think this is a user-visible bug) thread stacks are unnecessarily mapped with execute permission. This patch fixes the DEFAULT_STACK_PERMS definition in question. Tested (compilation only) with build-many-glibcs.py for ia64. This fixes the check-execstack failure. [BZ #22156] * sysdeps/ia64/stackinfo.h (DEFAULT_STACK_PERMS): Likewise.
2017-09-26resolv/Makefile: Fix typo in commentFlorian Weimer
2017-09-26resolv/nss_dns/dns-host.c: Fix typo in commentFlorian Weimer
And only the resolv/map*.h actually contain implementations.
2017-09-25scratch_buffer: use union for internal bufferAdhemerval Zanella
Problem reported by Florian Weimer [1] and solution suggested by Andreas Schwab [2]. It also set the same buffer size independent of architecture max_align_t size. Checked on x86_64-linux-gnu and i686-linux-gnu. * lib/malloc/scratch_buffer.h (struct scratch_buffer): Use an union instead of a max_align_t array for __space, so that __space is the same size on all platforms. * malloc/scratch_buffer_grow_preserve.c (__libc_scratch_buffer_grow_preserve): Likewise. [1] https://sourceware.org/ml/libc-alpha/2017-09/msg00693.html [2] https://sourceware.org/ml/libc-alpha/2017-09/msg00695.html
2017-09-25posix: Add compat glob symbol to not follow dangling symbolsAdhemerval Zanella
This patch follows commit 5554304f0 (posix: Allow glob to match dangling symlinks [BZ #866]) by adding a compat symbol that follow previous semantic of not following dangling symlinks and thus avoiding call gl_lstat with GLOB_ALTDIRFUNC. It avoids failure with old binaries that not set the alternate function pointer for lstat (GNUmake for instance). The following scenario, for instance, fails with current GNUmake because glibc will access unitialized memory when calling gl_lstat: $ cat src/t/t.c int main () { return 0; } $ cat Makefile SRC = $(wildcard src/*/t.c) OBJ = $(patsubst src/%.c, obj/%.o, $(SRC)) prog: $(OBJ) $(CC) $(CFLAGS) $(LDFLAGS) $(LIBS) $(OBJ) -o prog obj/%.o: src/%.c $(CC) $(CFLAGS) -c $< -o $@ $ make This works as expected with the patch applied. Since it is for generic ABI, default compat symbols are added with override for Linux due LFS. Now we have two compat symbols for glob on Linux: 1. sysdeps/unix/sysv/linux/oldglob.c which implements glob64 with the old dirent layout. For this implementation I also set it to not follow dangling symlinks (which is the safest path). 2. sysdeps/unix/sysv/linux/glob{64}-lstat-compat.c which implements the compat symbol for dangling symlinks. As for generic glob, the implementation uses XSTAT_IS_XSTAT64 to define whether both __glob_lstat_compat and __glob64_lstat_compat should be different implementations. For archictures that define XSTAT_IS_XSTAT64, __glob_lstat_compat is aliased to __glob64_lstat_compat. 3. sysdeps/unix/sysv/linux/alpha/oldglob.c with a different glob_t layout. As for 1. this patch changes it to not follow dangling symlinks. The patch also bumps _GNU_GLOB_INTERFACE_VERSION to 2 to advertise the new semantic. On GNUmake, for instance, it will force to it use its internal glob implementation instead and avoiding triggering the same failure on builds against newer GLIBCs. Checked on x86_64-linux-gnu and i686-linux-gnu. I also checked with a build against the major ABIs required to check for the abilist. The changes should also work on gnulib (I run gnulib-tool.py check glob and it shown no regressions). [BZ #22183] * include/gnu-versions.h (_GNU_GLOB_INTERFACE_VERSION): Increase version to 2. * posix/Makefile (routines): Add glob-lstat-compat and glob64-lstat-compat. * posix/Versions (GLIBC_2.27, glob, glob64): Add symbol version. * posix/glob-lstat-compat.c: New file. * posix/glob64-lstat-compat.c: Likewise. * posix/tst-glob_lstat_compat.c: Likewise. * sysdeps/unix/sysv/linux/glob-lstat-compat.c: Likewise. * sysdeps/unix/sysv/linux/alpha/glob-lstat-compat.c: Likewise. * sysdeps/unix/sysv/linux/glob64-lstat-compat.c: Likewise. * sysdeps/unix/sysv/linux/alpha/glob.c: Remove file. * posix/glob.c (glob_lstat): New function. (glob): Rename to __glob and add versioned symbol to 2.27. (glob_in_dir): Use glob_lstat. * posix/glob64.c (glob64): Add GLOB_ATTRIBUTE. * sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/glob.c (glob): Add versioned symbol for 2.27. * sysdeps/unix/sysv/linux/glob64.c (glob64): Likewise. * sysdeps/unix/sysv/linux/oldglob.c (GLOB_NO_LSTAT): Define. * sysdeps/unix/sysv/linux/alpha/oldglob.c (__old_glob): Do not use gl_lstat on glob call. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: Add GLIBC_2.27 glob and glob64 symbols. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise. * sysdeps/unix/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
2017-09-25Update configure.ac for binutils 2.25H.J. Lu
Commit 073e8fa7739ed453d6854b834f290c263a6cdb9f requires binutils 2.25 or later to build glibc: * configure.ac (AS): Require binutils 2.25 or later. (LD): Likewise. But it only updated LD version check in configure.ac. This patch adds the missing AS version check. * configure.ac (AS): Require binutils 2.25 or later. * configure: Regenerated.
2017-09-25Reduce total memory required to create all threads to 128MiB. This fixesPaul Pluzhnikov
intermittent failure in stdlib/test-{atexit,at_quick_exit,...} tests (Bug 22207).
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