1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2018 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <https://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
12 * <math.h> functions that round their results to a narrower type are added
13 from TS 18661-1:2014 and TS 18661-3:2015:
15 - fadd, faddl, daddl and corresponding fMaddfN, fMaddfNx, fMxaddfN and
18 - fsub, fsubl, dsubl and corresponding fMsubfN, fMsubfNx, fMxsubfN and
21 - fmul, fmull, dmull and corresponding fMmulfN, fMmulfNx, fMxmulfN and
24 - fdiv, fdivl, ddivl and corresponding fMdivfN, fMdivfNx, fMxdivfN and
27 * Nominative and genitive month names are now supported for the Catalan and
28 Czech languages. The Catalan and Greek languages now support abbreviated
29 alternative month names.
31 * Building and running on GNU/Hurd systems now works without out-of-tree
34 Deprecated and removed features, and other changes affecting compatibility:
36 * The nonstandard header files <libio.h> and <_G_config.h> are no longer
37 installed. Software that was using either header should be updated to
38 use standard <stdio.h> interfaces instead.
40 * The stdio functions 'getc' and 'putc' are no longer defined as macros.
41 This was never required by the C standard, and the macros just expanded
42 to call alternative names for the same functions. If you hoped getc and
43 putc would provide performance improvements over fgetc and fputc, instead
44 investigate using (f)getc_unlocked and (f)putc_unlocked, and, if
45 necessary, flockfile and funlockfile.
47 * All stdio functions now treat end-of-file as a sticky condition. If you
48 read from a file until EOF, and then the file is enlarged by another
49 process, you must call clearerr or another function with the same effect
50 (e.g. fseek, rewind) before you can read the additional data. This
51 corrects a longstanding C99 conformance bug. It is most likely to affect
52 programs that use stdio to read interactive input from a terminal.
55 * The macros 'major', 'minor', and 'makedev' are now only available from
56 the header <sys/sysmacros.h>; not from <sys/types.h> or various other
57 headers that happen to include <sys/types.h>. These macros are rarely
58 used, not part of POSIX nor XSI, and their names frequently collide with
59 user code; see https://sourceware.org/bugzilla/show_bug.cgi?id=19239 for
62 <sys/sysmacros.h> is a GNU extension. Portable programs that require
63 these macros should first include <sys/types.h>, and then include
64 <sys/sysmacros.h> if __GNU_LIBRARY__ is defined.
66 * The tilegx*-*-linux-gnu configurations are no longer supported.
68 * The obsolete function ustat is no longer available to newly linked
69 binaries; the headers <ustat.h> and <sys/ustat.h> have been removed. This
70 function has been deprecated in favor of fstatfs and statfs.
72 * The obsolete function nfsservctl is no longer available to newly linked
73 binaries. This function was specific to systems using the Linux kernel
74 and could not usefully be used with the GNU C Library on systems with
75 version 3.1 or later of the Linux kernel.
77 Changes to build and runtime requirements:
79 [Add changes to build and runtime requirements here]
81 Security related changes:
83 [Add security related changes here]
85 The following bugs are resolved with this release:
87 [The release manager will add the list generated by
88 scripts/list-fixed-bugs.py just before the release.]
95 * The GNU C Library can now be compiled with support for building static
96 PIE executables (See --enable-static-pie in INSTALL). These static PIE
97 executables are like static executables but can be loaded at any address
98 and provide additional security hardening benefits at the cost of some
99 memory and performance. When the library is built with --enable-static-pie
100 the resulting libc.a is usable with GCC 8 and above to create static PIE
101 executables using the GCC option '-static-pie'. This feature is currently
102 supported on i386, x86_64 and x32 with binutils 2.29 or later, and on
103 aarch64 with binutils 2.30 or later.
105 * Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin, cosf,
106 sinf, sincosf and tan with FMA, contributed by Arjan van de Ven and
109 * Optimized x86-64 trunc and truncf for processors with SSE4.1.
111 * Optimized generic expf, exp2f, logf, log2f, powf, sinf, cosf and sincosf.
113 * In order to support faster and safer process termination the malloc API
114 family of functions will no longer print a failure address and stack
115 backtrace after detecting heap corruption. The goal is to minimize the
116 amount of work done after corruption is detected and to avoid potential
117 security issues in continued process execution. Reducing shutdown time
118 leads to lower overall process restart latency, so there is benefit both
119 from a security and performance perspective.
121 * The abort function terminates the process immediately, without flushing
122 stdio streams. Previous glibc versions used to flush streams, resulting
123 in deadlocks and further data corruption. This change also affects
124 process aborts as the result of assertion failures.
126 * On platforms where long double has the IEEE binary128 format (aarch64,
127 alpha, mips64, riscv, s390 and sparc), the math library now implements
128 _Float128 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015.
129 These are the same interfaces added in version 2.26 for some platforms where
130 this format is supported but is not the format of long double.
132 * On platforms with support for _Float64x (aarch64, alpha, i386, ia64,
133 mips64, powerpc64le, riscv, s390, sparc and x86_64), the math library now
134 implements interfaces for that type, as defined by ISO/IEC TS
135 18661-3:2015. These are corresponding interfaces to those supported for
138 * The math library now implements interfaces for the _Float32, _Float64 and
139 _Float32x types, as defined by ISO/IEC TS 18661-3:2015. These are
140 corresponding interfaces to those supported for _Float128.
142 * glibc now implements the memfd_create and mlock2 functions on Linux.
144 * Support for memory protection keys was added. The <sys/mman.h> header now
145 declares the functions pkey_alloc, pkey_free, pkey_mprotect, pkey_set,
148 * The copy_file_range function was added.
150 * Optimized memcpy, mempcpy, memmove, and memset for sparc M7.
152 * The ldconfig utility now processes `include' directives using the C/POSIX
153 collation ordering. Previous glibc versions used locale-specific
154 ordering, the change might break systems that relied on that.
156 * Support for two grammatical forms of month names has been added.
157 In a call to strftime, the "%B" and "%b" format specifiers will now
158 produce the grammatical form required when the month is used as part
159 of a complete date. New "%OB" and "%Ob" specifiers produce the form
160 required when the month is named by itself. For instance, in Greek
161 and in many Slavic and Baltic languages, "%B" will produce the month
162 in genitive case, and "%OB" will produce the month in nominative case.
164 In a call to strptime, "%B", "%b", "%h", "%OB", "%Ob", and "%Oh"
165 are all valid and will all accept any known form of month
166 name---standalone or complete, abbreviated or full. In a call to
167 nl_langinfo, the query constants MON_1..12 and ABMON_1..12 return
168 the strings used by "%B" and "%b", respectively. New query
169 constants ALTMON_1..12 and _NL_ABALTMON_1..12 return the strings
170 used by "%OB" and "%Ob", respectively.
172 In a locale definition file, use "alt_mon" and "ab_alt_mon" to
173 define the strings for %OB and %Ob, respectively; these have the
174 same syntax as "mon" and "abmon". These arrays are optional; if they
175 are not provided then they have the same content as "mon" and "abmon",
178 These features are provided for locales which define "alt_mon" and/or
179 "ab_alt_mon" in their locale source data. This release includes such
180 alternative month name data for the following languages: Belarusian,
181 Croatian, Greek, Lithuanian, Polish, Russian, and Ukrainian.
183 This feature is currently a GNU extension, but it is expected to
184 be added to the next revision of POSIX, and it is also already
185 available on some BSD-derived operating systems.
187 This feature will cause existing statically compiled applications
188 to fail to load locales and fall back to the builtin C/POSIX locales.
189 See notes below for other changes affecting compatibility.
191 * Support for the RISC-V ISA running on Linux has been added. This port
192 requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
193 for the following ISA and ABI pairs:
199 Deprecated and removed features, and other changes affecting compatibility:
201 * Statically compiled applications attempting to load locales compiled for the
202 GNU C Library version 2.27 will fail and fall back to the builtin C/POSIX
203 locale. The reason for this is that the addition of the new "%OB" and "%Ob",
204 support for two grammatical forms of the month names, also extends the locale
205 data binary format. Static applications needing locale support must be
206 recompiled to match the runtime and data they are deployed with. In some
207 distributions there is an upgrade window where dynamically linked applications
208 may use a new library but the old locale data and also fall back to the
209 builtin C/POSIX locales; restarting the application process is sufficient to
212 * Support for statically linked applications which call dlopen is deprecated
213 and will be removed in a future version of glibc. Applications which call
214 dlopen need to be linked dynamically instead.
216 * Support for old programs which use internal stdio data structures and
217 functions is deprecated. This includes programs which use the C++ streams
218 provided by libstdc++ in GCC 2.95. Programs which use the internal
219 symbols _IO_adjust_wcolumn, _IO_default_doallocate, _IO_default_finish,
220 _IO_default_pbackfail, _IO_default_uflow, _IO_default_xsgetn,
221 _IO_default_xsputn, _IO_doallocbuf, _IO_do_write, _IO_file_attach,
222 _IO_file_close, _IO_file_close_it, _IO_file_doallocate, _IO_file_fopen,
223 _IO_file_init, _IO_file_jumps, _IO_fileno, _IO_file_open,
224 _IO_file_overflow, _IO_file_read, _IO_file_seek, _IO_file_seekoff,
225 _IO_file_setbuf, _IO_file_stat, _IO_file_sync, _IO_file_underflow,
226 _IO_file_write, _IO_file_xsputn, _IO_flockfile, _IO_flush_all,
227 _IO_flush_all_linebuffered, _IO_free_backup_area, _IO_free_wbackup_area,
228 _IO_init, _IO_init_marker, _IO_init_wmarker, _IO_iter_begin, _IO_iter_end,
229 _IO_iter_file, _IO_iter_next, _IO_least_wmarker, _IO_link_in,
230 _IO_list_all, _IO_list_lock, _IO_list_resetlock, _IO_list_unlock,
231 _IO_marker_delta, _IO_marker_difference, _IO_remove_marker, _IO_seekmark,
232 _IO_seekwmark, _IO_str_init_readonly, _IO_str_init_static,
233 _IO_str_overflow, _IO_str_pbackfail, _IO_str_seekoff, _IO_str_underflow,
234 _IO_switch_to_main_wget_area, _IO_switch_to_wget_mode,
235 _IO_unsave_wmarkers, _IO_wdefault_doallocate, _IO_wdefault_finish,
236 _IO_wdefault_pbackfail, _IO_wdefault_setbuf, _IO_wdefault_uflow,
237 _IO_wdefault_xsgetn, _IO_wdefault_xsputn, _IO_wdoallocbuf, _IO_wdo_write,
238 _IO_wfile_jumps, _IO_wfile_overflow, _IO_wfile_sync, _IO_wfile_underflow,
239 _IO_wfile_xsputn, _IO_wmarker_delta, or _IO_wsetb may stop working with a
240 future version of glibc. Unlike other symbol removals, these old
241 applications will not be supported using compatibility symbols.
243 * On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
244 defined by <sys/ptrace.h>.
246 * libm no longer supports SVID error handling (calling a user-provided
247 matherr function on error) or the _LIB_VERSION variable to control error
248 handling. (SVID error handling and the _LIB_VERSION variable still work
249 for binaries linked against older versions of the GNU C Library.) The
250 libieee.a library is no longer provided. math.h no longer defines struct
251 exception, or the macros X_TLOSS, DOMAIN, SING, OVERFLOW, UNDERFLOW,
252 TLOSS, PLOSS and HUGE.
254 * The libm functions pow10, pow10f and pow10l are no longer supported for
255 new programs. Programs should use the standard names exp10, exp10f and
256 exp10l for these functions instead.
258 * The mcontext_t type is no longer the same as struct sigcontext. On
259 platforms where it was previously the same, this changes the C++ name
260 mangling for interfaces involving this type.
262 * The add-ons mechanism for building additional packages at the same time as
263 glibc has been removed. The --enable-add-ons configure option is now
266 * The --without-fp configure option is now ignored. Whether hardware
267 floating-point instructions are used is now configured based on whether
268 the compiler used at configure time (without any options implied by a
269 --with-cpu= configure option) uses such instructions.
271 * The res_hnok, res_dnok, res_mailok and res_ownok functions now check that
272 the specified string can be parsed as a domain name.
274 * In the malloc_info output, the <heap> element may contain another <aspace>
275 element, "subheaps", which contains the number of sub-heaps.
277 * The libresolv function p_secstodate is no longer supported for new
280 * The tilepro-*-linux-gnu configuration is no longer supported.
282 * The nonstandard header files <libio.h> and <_G_config.h> are deprecated
283 and will be removed in a future release. Software that is still using
284 either header should be updated to use standard <stdio.h> interfaces
287 libio.h was originally the header for a set of supported GNU extensions,
288 but they have not been maintained as such in many years, they are now
289 standing in the way of improvements to stdio, and we don't think there are
290 any remaining external users. _G_config.h was never intended for public
291 use, but predates the bits convention.
293 Changes to build and runtime requirements:
295 * bison version 2.7 or later is required to generate code in the 'intl'
298 Security related changes:
300 CVE-2009-5064: The ldd script would sometimes run the program under
301 examination directly, without preventing code execution through the
302 dynamic linker. (The glibc project disputes that this is a security
303 vulnerability; only trusted binaries must be examined using the ldd
306 CVE-2017-15670: The glob function, when invoked with GLOB_TILDE,
307 suffered from a one-byte overflow during ~ operator processing (either
308 on the stack or the heap, depending on the length of the user name).
309 Reported by Tim Rühsen.
311 CVE-2017-15671: The glob function, when invoked with GLOB_TILDE,
312 would sometimes fail to free memory allocated during ~ operator
313 processing, leading to a memory leak and, potentially, to a denial
316 CVE-2017-15804: The glob function, when invoked with GLOB_TILDE and
317 without GLOB_NOESCAPE, could write past the end of a buffer while
318 unescaping user names. Reported by Tim Rühsen.
320 CVE-2017-17426: The malloc function, when called with an object size near
321 the value SIZE_MAX, would return a pointer to a buffer which is too small,
322 instead of NULL. This was a regression introduced with the new malloc
323 thread cache in glibc 2.26. Reported by Iain Buclaw.
325 CVE-2017-1000408: Incorrect array size computation in _dl_init_paths leads
326 to the allocation of too much memory. (This is not a security bug per se,
327 it is mentioned here only because of the CVE assignment.) Reported by
330 CVE-2017-1000409: Buffer overflow in _dl_init_paths due to miscomputation
331 of the number of search path components. (This is not a security
332 vulnerability per se because no trust boundary is crossed if the fix for
333 CVE-2017-1000366 has been applied, but it is mentioned here only because
334 of the CVE assignment.) Reported by Qualys.
336 CVE-2017-16997: Incorrect handling of RPATH or RUNPATH containing $ORIGIN
337 for AT_SECURE or SUID binaries could be used to load libraries from the
340 CVE-2018-1000001: Buffer underflow in realpath function when getcwd function
341 succeeds without returning an absolute path due to unexpected behaviour
342 of the Linux kernel getcwd syscall. Reported by halfdog.
344 CVE-2018-6485: The posix_memalign and memalign functions, when called with
345 an object size near the value of SIZE_MAX, would return a pointer to a
346 buffer which is too small, instead of NULL. Reported by Jakub Wilk.
348 CVE-2018-6551: The malloc function, when called with an object size near
349 the value of SIZE_MAX, would return a pointer to a buffer which is too
350 small, instead of NULL.
352 The following bugs are resolved with this release:
354 [866] glob: glob should match dangling symlinks
355 [1062] glob: sysdeps/generic/glob.c merge from gnulib (part 3 of 3)
356 [2522] localedata: ca_ES@valencia: new Valencian (meridional Catalan)
358 [5997] math: Very slow execution of sinf function
359 [10580] localedata: hr_HR: updated locale
360 [10871] locale: 'mon' array should contain both nominative and genitive
362 [12349] localedata: eu_ES: incorrect thousands separator
363 [13605] localedata: shn_MM: new Shan locale
364 [13805] localedata: ru_RU: currency should use ',' as radix point
365 [13953] localedata: km_KH: locale update
366 [13994] localedata: mjw_IN: new locale
367 [14121] build: make writes .mo files in po directory
368 [14333] libc: Fix the race between atexit() and exit()
369 [14681] dynamic-link: _dl_get_origin leaks memory via executable link map.
370 [14925] localedata: bn_*: LC_IDENTIFICATION.language key should be
372 [15260] localedata: LC_MESSAGES.{yes,no}{str,expr}: various errors
373 [15261] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of full-
374 width Latin characters
375 [15332] localedata: es_CU: locale update
376 [15436] stdio: Don't close or flush stdio streams on abort
377 [15537] localedata: lv_LV: invalid collation for Latvian diacritical
379 [16148] localedata: ca_ES: incorrect thousands separator
380 [16750] dynamic-link: ldd should not try to execute the binaries
382 [16777] localedata: pl_PL: incorrect thousands separator in locale
383 [16905] localedata: hanzi: new collation
384 [17563] localedata: cmn_TW: add hanzi collation
385 [17750] localedata: wrong collation order of diacritics in most locales
386 [17804] libc: scandirat fails with ENOMEM because it checks for errno even
388 [17956] build: Build fails on missing definitions from header file
389 nss/nss.h when Mozilla NSS is used for cryptography
390 [18203] libc: realpath() does not handle unreachable paths correctly
391 [18572] dynamic-link: [arm] Lazy TLSDESC relocation has data race
392 [18812] localedata: kab_DZ: new Kabyle Algeria locale
393 [18822] libc: Internal functions are called via PLT
394 [18858] string: _HAVE_STRING_ARCH_xxx aren't defined for i386 nor x86_64
395 [19170] libc: __gmon_start__ defined in hppa in crtn.S
396 [19574] libc: glibc should support building static PIE binaries
397 [19852] localedata: charmaps/UTF-8: incorrect wcwidth for U+3099 and
399 [19971] glob: glob: Do not skip entries with zero d_ino values
400 [19982] localedata: fr.po: spelling mistake for error code EXDEV
401 [20008] localedata: km_KH: convert to translit_neutral
402 [20009] localedata: tr_TR: convert LC_CTYPE to i18n
403 [20142] math: [x86_64] Add SSE4.1 trunc, truncf
404 [20204] dynamic-link: _dl_open_hook and _dlfcn_hook hardening
405 [20482] localedata: de_CH: abbreviated weekdays should be two letters
406 [20498] localedata: miq_NI: new Mískitu / Miskito (miq) language locale
408 [20532] nss: getaddrinfo uses errno and h_errno without guaranteeing
409 they're set, wrong errors returned by gaih_inet when lookup functions
411 [20756] localedata: [PATCH] Use Unicode wise thousands separator
412 [20826] network: posix/tst-getaddrinfo5 fails on hosts without network
414 [20952] localedata: yuw_PG: new locale
415 [21084] localedata: charmaps/IBM858: new codepage
416 [21161] manual: [PATCH] fix typo in manual/arith.texi on strtoul prototype
417 [21242] libc: assert gives pedantic warning in old gcc versions
418 [21265] dynamic-link: _dl_runtime_resolve isn't compatible with Intel C++
419 __regcall calling convention
420 [21309] math: signed integer overflow in sysdeps/ieee754/dbl-64/e_pow.c
421 [21326] libc: C99 functions are not declared for C++11 and later if
422 _GNU_SOURCE is not predefined by g++
423 [21457] libc: sys/ucontext.h namespace
424 [21530] libc: tmpfile() should be implemented using O_TMPFILE
425 [21660] math: GCC fails to compile a formula with tgmath.h
426 [21672] nptl: sys-libs/glibc on ia64 crashes on thread exit: signal
427 SIGSEGV, Segmentation fault: pthread_create.c:432: __madvise
428 (pd->stackblock, freesize - PTHREAD_STACK_MIN, MADV_DONTNEED);
429 [21684] math: tgmath.h handling of complex integers
430 [21685] math: tgmath.h handling of bit-fields
431 [21686] math: tgmath.h handling of __int128
432 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
434 [21745] libc: [powerpc64le] Extra PLT reference with --enable-stack-
436 [21750] localedata: column width of characters incompatible with classical
438 [21754] malloc: malloc: Perform as little work as possible after heap
439 consistency check failures
440 [21780] libc: hppa: p{read,write}v2 does not set ENOSUP on invalid flag
441 [21790] libc: Missing __memset_zero_constant_len_parameter in libc.so
442 [21791] string: Unused XXX_chk_XXX functions in libc.a
443 [21815] dynamic-link: FAIL: elf/tst-prelink-cmp with GCC is defaulted to
445 [21836] localedata: Removed redundant data (LC_MONETARY) in various Indian
447 [21845] localedata: Added new Locale bho_NP
448 [21853] localedata: Fix abday Which looks same as day in zh_SG
449 [21854] localedata: Added New Locale en_SC
450 [21864] libc: xmalloc.o is compiled with -DMODULE_NAME=libc
451 [21871] dynamic-link: _dl_runtime_resolve_avx_opt is slower than
452 _dl_runtime_resolve_avx_slow
453 [21885] network: getaddrinfo: gethosts does not release resolver context
454 on memory allocation failure
455 [21899] libc: XPG4.2 sigaction namespace
456 [21908] dynamic-link: dynamic linker broke on ia64 (mmap2 consolidation is
458 [21913] libc: static binaries SIGSEGV in __brk when host's gcc is pie-by-
460 [21915] nss: nss_files can return with NSS_STATUS_SUCCESS and a clobbered
461 errno value, causing getaddrinfo to fail
462 [21920] localedata: Fix p_cs_precedes/n_cs_precedes for mt_MT
463 [21922] network: getaddrinfo with AF_INET/AF_INET6 returns EAI_NONAME
464 instead of EAI_NODATA
465 [21928] libc: sys/ptrace.h: remove obsolete temporary development Linux
466 constant PTRACE_SEIZE_DEVEL
467 [21930] math: C-only gcc builtins used in <math.h> isinf
468 [21932] network: Unpaired __resolv_context_get in generic get*_r
470 [21941] math: powerpc: Wrong register constraint for xssqrtqp in sqrtf128
471 [21944] libc: sigval namespace
472 [21951] localedata: Update hanzi collation by stroke
473 [21955] math: Wrong alignment of L(SP_RANGE)/L(SP_INF_0) in
474 sysdeps/x86_64/fpu/e_expf.S
475 [21956] libc: Stack allocation in MIPS syscall impl (ubounded stack
476 allocation in syscall loops)
477 [21959] localedata: Fix Country name for xh_ZA
478 [21960] localedata: Fix abmon for bem_ZM
479 [21966] math: AVX2 mathvec functions use FMA without checking
480 [21967] math: When 512-bit AVX2 wrapper functions in mathvec are used?
481 [21971] localedata: Added New Locale for mfe_MU
482 [21972] libc: assert macro requires operator== (int) for its argument type
483 [21973] math: [sparc] libm missing sqrtl compat symbol
484 [21974] libc: Remove __bb_init_func and __bb_exit_func
485 [21982] string: stratcliff.c: error: assuming signed overflow does not
487 [21986] stdio: __guess_grouping is called incorrectly
488 [21987] math: [sparc32] wrong bits/long-double.h installed
489 [22019] localedata: Wrong placement of monetary symbol in el_GR (negative
491 [22022] localedata: Missing country_name for mni_IN
492 [22023] localedata: Removed redundant data (LC_TIME and LC_MESSAGES) for
494 [22025] locale: iconv: Inconsistency between pointer mangling and NULL
496 [22026] locale: iconv_open: heap overflow on gconv_init failure
497 [22028] math: bits/math-finite.h _MSUF_ expansion namespace
498 [22035] math: [m68k] bits/math-inline.h macro namespace
499 [22038] localedata: Fix abbreviated weeks and months for Somali
500 [22044] localedata: Remove redundant data for Limburgish Language
501 [22050] malloc: Linking with -lmcheck does not hook
502 __malloc_initialize_hook correctly
503 [22051] libc: zero terminator in the middle of glibc's .eh_frame
504 [22052] malloc: malloc failed to compile with GCC 7 and -O3
505 [22070] localedata: charmaps/UTF-8: wcwidth for
506 Prepended_Concatenation_Mark codepoints set to 0 (should be 1)
507 [22074] localedata: charmaps/UTF-8: wcwidth for U+1160-U+11FF (Hangul
508 Jungseong and Jongseong) should be 0
509 [22078] nss: nss_files performance issue in multi mode
510 [22082] math: bits/math-finite.h exp10 condition
511 [22086] libc: pcprofiledump incorrect cross-endian condition
512 [22093] dynamic-link: ld.so no longer searches in .../x86_64
513 [22095] network: Name server address allocation memory leak in resolv.conf
515 [22096] network: __resolv_conf_attach can incorrectly free passed conf
517 [22100] localedata: om_KE: LC_TIME: copy redundant data from om_ET
518 [22101] dynamic-link: Dynamic loader must ignore "debug" shared objects
520 [22111] malloc: malloc: per thread cache is not returned when thread exits
521 [22112] localedata: Fix LC_TELEPHONE/LC_NAME for az_AZ
522 [22134] libc: [linux] implement fexecve with execveat
523 [22142] libc: [powerpc] printf oupts a wrong value of DBL_MAX on ppc64 and
525 [22145] libc: ttyname() gives up too early in the face of namespaces
526 [22146] math: C++ build issue with float128 on x86_64
527 [22153] nptl: nptl: save error code before process termination
528 [22156] libc: [hppa,ia64,microblaze] Executable stack default
529 [22159] malloc: malloc: MALLOC_CHECK_ broken with --enable-tunables=no
530 [22161] nscd: nscd cache prune for netgroups hangs after timeout bump
531 [22165] libc: [hppa] Text relocations in libc.so
532 [22180] libc: destructor registered via __cxa_atexit is called twice
533 [22183] glob: commit 5554304f0ddd ("posix: Allow glob to match dangling
534 symlinks") cause "make" segfaults
535 [22189] math: [powerpc] math_private.h definitions of math_opt_barrier and
537 [22207] libc: FAIL: stdlib/test-atexit-race
538 [22225] math: nearbyint arithmetic moved before feholdexcept
539 [22229] math: [sparc32] missing copysignl, fabsl, fmal compat symbols
540 [22235] math: iscanonical in C++ and float128
541 [22243] math: log2(0) and log10(0) are wrong in downward rounding without
542 the svid compat wrapper
543 [22244] math: ynf and yn are wrong without the svid compat wrapper
544 [22273] libc: Improper assert in Linux posix_spawn implementation
545 [22284] libc: -pg -pie doesn't work
546 [22292] locale: localedef exits with error 4 when it should be error 1
547 [22294] locale: Allow "" for int_currency_symbol definition in locales.
548 [22295] locale: Don't warn on non-symbolic characters in locale sources in
550 [22296] math: glibc 2.26: signbit build issue with Gcc 5.5.0 on x86_64
551 [22298] nptl: x32: lockups on recursive pthread_mutex_lock after upgrade
553 [22299] dynamic-link: Problem with $PLATFORM on x86_64 platform
554 [22320] glob: Buffer overflow in glob with GLOB_TILDE (CVE-2017-15670)
555 [22321] libc: sysconf(_SC_IOV_MAX) returns -1 on Linux
556 [22322] libc: [mips64] wrong bits/long-double.h installed
557 [22325] glob: Memory leak in glob with GLOB_TILDE (CVE-2017-15671)
558 [22332] glob: Buffer overflow in glob with GLOB_TILDE in unescaping
560 [22336] localedata: cs_CZ LC_COLLATE does not use i18n
561 [22343] malloc: Integer overflow in posix_memalign
562 [22347] libc: getrandom() returns the number of bytes that were copied to
563 the buffer even though the comments say "Return 0 on success and -1 on
565 [22353] string: sysdeps/i386/i586/strcpy.S isn't maintainable
566 [22362] libc: Installed crt1.o, crti,.o and crtn.o files are used with
568 [22370] dynamic-link: Incorrect note padding check
569 [22375] libc: malloc returns pointer from tcache_get when should return
570 NULL (CVE-2017-17426)
571 [22377] math: iseqsig, float128 and C++
572 [22382] localedata: Error in tpi_PG locale
573 [22387] localedata: Replace unicode sequences <Uxxxx> for characters
574 inside the ASCII printable range
575 [22402] math: [powerpc64le] __MATH_TG does not support _Float128 for
577 [22403] localedata: Slash needs escaping in some locales
578 [22408] malloc: malloc_info access heaps without arena lock, ignores heaps
579 [22409] network: res_hnok does not accept some host names used on the
581 [22412] network: res_dnok, res_hnok should perform syntax checks
582 [22413] network: ns_name_pton ignores syntactically invalid trailing
584 [22415] stdio: setvbuf can lead to invalid free/segfault
585 [22432] build: Non-deterministic build
586 [22439] malloc: malloc_info should compute summary statistics for all sub-
588 [22442] network: if_nametoindex could report index for the wrong
590 [22446] build: aliasing violation calling readlink in handle_request
591 [22447] build: unsafe call to strlen with a non-string in getlogin_r.c
592 [22457] libc: Generic preadv/pwritev incorrectly calls __posix_memalign
593 [22459] libc: FAIL: elf/check-localplt with __stack_chk_fail related to
594 __nscd_hash/__nss_hash
595 [22463] network: p_secstodate overflow handling
596 [22469] localedata: pl_PL LC_COLLATE does not use i18n
597 [22478] libc: sigwait can fail with EINTR
598 [22505] libc: ldconfig processes include directive in locale-specific
600 [22515] localedata: hsb_DE LC_COLLATE does not use copy "iso14651_t1"
601 [22517] localedata: et_EE LC_COLLATE does not use copy "iso14651_t1"
602 [22519] localedata: is_IS LC_COLLATE does not use copy "iso14651_t1"
603 [22524] localedata: lt_LT LC_COLLATE does not use copy "iso14651_t1"
604 [22527] localedata: tr_TR LC_COLLATE does not use copy "iso14651_t1"
605 [22534] localedata: Collation rules for Serbian and Bosnian should be the
607 [22561] math: [DR#471] cacosh (0 + iNaN) should return NaN +/- i pi/2
608 [22568] math: [DR#471] ctanh (0 + iNaN), ctanh (0 + i Inf)
609 [22577] libc: missing newline after "cannot allocate TLS data structures
611 [22588] manual: manual/conf.texi: missing underscore in front of
613 [22593] math: nextafter and nexttoward are declared with const attribute
614 [22596] manual: manual: finite(nan) wrongly described as returning nonzero
615 [22603] string: ia64 memchr overflows internal pointer check
616 [22605] libc: SH clone does not set the exit code correctly
617 [22606] dynamic-link: Incorrect array size computation in _dl_init_paths
619 [22607] dynamic-link: Buffer Overflow in _dl_init_paths (CVE-2017-1000409)
620 [22611] malloc: malloc/tst-realloc wrongly assumes that errno must not be
621 modified in case of success
622 [22614] build: gcc: error: unrecognized command line option ‘-no-pie’
623 [22615] manual: manual: ambiguous wording about errno value in case of
625 [22624] libc: MIPS setjmp() saves incorrect 'o0' register in --enable-
627 [22625] dynamic-link: RPATH $ORIGIN replaced by PWD for AT_SECURE/SUID
628 binaries or if /proc is not mounted (CVE-2017-16997)
629 [22627] dynamic-link: $ORIGIN in $LD_LIBRARY_PATH is substituted twice
630 [22630] build: $(no-pie-ldflag) is no longer effective
631 [22631] math: [m68k] Bad const attributes in bits/mathinline.h
632 [22635] nptl: pthread_self returns NULL before libpthread is loaded
633 [22636] nptl: PTHREAD_STACK_MIN is too small on x86-64
634 [22637] nptl: guard size is subtracted from thread stack size instead of
636 [22648] libc: getrlimit/setrlimit with RLIM_INFINITY broken on alpha
637 [22657] localedata: hu_HU: Avoid double space in date
638 [22660] math: fmax, fmin sNaN handling on alpha
639 [22664] libc: New warning of GCC8
640 [22665] math: alpha: ceil and floor raise inexact exceptions
641 [22666] math: alpha: trunc raise inexact exceptions
642 [22667] libc: makecontext lacks stack alignment on i386
643 [22678] libc: prlimit fails for RLIM_INFINITY values on 32-bit machines
644 [22679] libc: getcwd(3) can succeed without returning an absolute path
646 [22685] libc: PowerPC: Static AT_SECURE binaries segfault with lock-
648 [22687] math: [powerpc-nofpu] complex long double functions spurious
650 [22688] math: [powerpc-nofpu] remainderl wrong sign of zero result
651 [22690] math: [ldbl-128ibm] lrintl, lroundl missing "invalid" exceptions
652 [22691] math: [powerpc-nofpu] fmaxmagl, fminmagl spurious "invalid"
654 [22693] math: [ldbl-128ibm] log1pl (-qNaN) spurious "invalid" exception
655 [22697] math: [powerpc] llround spurious "inexact" exceptions on 32-bit
657 [22701] nis: Incomplete removal of libnsl
658 [22702] math: [powerpc-nofpu] nearbyintl traps with trapping "inexact"
659 [22707] libc: Missing defines in elf.h for DF_1_STUB and DF_1_PIE.
660 [22715] dynamic-link: FAIL: elf/tst-audit10
661 [22719] libc: Backtrace tests fail on hppa
662 [22742] libc: [aarch64] mcontext_t __reserved field got renamed
663 [22743] nptl: __pthread_register_cancel corrupts stack after f81ddabffd
664 [22765] crypt: (struct crypt_data *data)->initialized is not set to zero
665 before the first call to crypt_r () in crypt/badsalttest.c
672 * A per-thread cache has been added to malloc. Access to the cache requires
673 no locks and therefore significantly accelerates the fast path to allocate
674 and free small amounts of memory. Refilling an empty cache requires locking
675 the underlying arena. Performance measurements show significant gains in a
676 wide variety of user workloads. Workloads were captured using a special
677 instrumented malloc and analyzed with a malloc simulator. Contributed by
678 DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
680 * Unicode 10.0.0 Support: Character encoding, character type info, and
681 transliteration tables are all updated to Unicode 10.0.0, using
682 generator scripts contributed by Mike FABIAN (Red Hat).
683 These updates cause user visible changes, especially the changes in
684 wcwidth for many emoji characters cause problems when emoji sequences
685 are rendered with pango, see for example:
686 https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
688 * Collation of Hungarian has been overhauled and is now consistent with "The
689 Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
692 * Improvements to the DNS stub resolver, contributed by Florian Weimer:
694 - The GNU C Library will now detect when /etc/resolv.conf has been
695 modified and reload the changed configuration. The new resolver option
696 “no-reload” (RES_NORELOAD) disables this behavior.
698 - The GNU C Library now supports an arbitrary number of search domains
699 (configured using the “search” directive in /etc/resolv.conf);
700 previously, there was a hard limit of six domains. For backward
701 compatibility, applications that directly modify the ‘_res’ global
702 object are still limited to six search domains.
704 - When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
705 Library will now randomly pick a name server from the configuration as a
706 starting point. (Previously, the second name server was always used.)
708 * The tunables feature is now enabled by default. This allows users to tweak
709 behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
711 * New function reallocarray, which resizes an allocated block (like realloc)
712 to the product of two sizes, with a guaranteed clean failure upon integer
713 overflow in the multiplication. Originally from OpenBSD, contributed by
714 Dennis Wölfing and Rüdiger Sonderfeld.
716 * New wrappers for the Linux-specific system calls preadv2 and pwritev2.
717 These are extended versions of preadv and pwritev, respectively, taking an
718 additional flags argument. The set of supported flags depends on the
719 running kernel; full support currently requires kernel 4.7 or later.
721 * posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
722 create a new session ID for the spawned process. This feature is
723 scheduled to be added to the next major revision of POSIX; for the time
724 being, it is available under _GNU_SOURCE.
726 * errno.h is now safe to use from C-preprocessed assembly language on all
727 supported operating systems. In this context, it will only define the
728 Exxxx constants, as preprocessor macros expanding to integer literals.
730 * On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
731 128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
732 754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
733 Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
735 To compile programs that use this feature, the compiler must support
736 128-bit floating point with the type name _Float128 (as defined by TS
737 18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
738 C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
739 must be defined to make the new interfaces visible.
741 The new functions and macros correspond to those present for other
742 floating-point types (except for a few obsolescent interfaces not
743 supported for the new type), with F128 or f128 suffixes; for example,
744 strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
745 printf or scanf formats for the new type; the strfromf128 and strtof128
746 interfaces should be used instead.
748 Deprecated and removed features, and other changes affecting compatibility:
750 * The synchronization that pthread_spin_unlock performs has been changed to
751 now be equivalent to a C11 atomic store with release memory order to the
752 spin lock's memory location. Previously, several (but not all)
753 architectures used stronger synchronization (e.g., containing what is
754 often called a full barrier). This change can improve performance, but
755 may affect odd fringe uses of spin locks that depend on the previous
756 behavior (e.g., using spin locks as atomic variables to try to implement
757 Dekker's mutual exclusion algorithm).
759 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
762 * Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
763 will only be built and installed when the GNU C Library is configured with
764 --enable-obsolete-rpc. This allows alternative RPC implementations, such
765 as TIRPC or rpcsvc-proto, to be used.
767 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
768 libnss_compat, are deprecated, and will not be built or installed by
771 The NIS(+) support library, libnsl, is also deprecated. By default, a
772 compatibility shared library will be built and installed, but not headers
773 or development libraries. Only a few NIS-related programs require this
774 library. (In particular, the GNU C Library has never required programs
775 that use 'gethostbyname' to be linked with libnsl.)
777 Replacement implementations based on TIRPC, which additionally support
778 IPv6, are available from <https://github.com/thkukuk/>. The configure
779 option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
780 name service modules, to be built and installed.
782 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
783 support is enabled, the configured recursive resolver must support EDNS.
784 (Responding to EDNS-enabled queries with responses which are not
785 EDNS-enabled is fine, but FORMERR responses are not.)
787 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
788 servers have not supported this opcode for a long time.
790 * The _res_opcodes variable has been removed from libresolv. It had been
791 exported by accident.
793 * <string.h> no longer includes inline versions of any string functions,
794 as this kind of optimization is better done by the compiler. The macros
795 __USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
797 * The nonstandard header <xlocale.h> has been removed. Most programs should
798 use <locale.h> instead. If you have a specific need for the definition of
799 locale_t with no other declarations, please contact
800 libc-alpha@sourceware.org and explain.
802 * The obsolete header <sys/ultrasound.h> has been removed.
804 * The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
806 * The obsolete function cfree has been removed. Applications should use
809 * The stack_t type no longer has the name struct sigaltstack. This changes
810 the C++ name mangling for interfaces involving this type.
812 * The ucontext_t type no longer has the name struct ucontext. This changes
813 the C++ name mangling for interfaces involving this type.
815 * On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
816 the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
817 longer has the name struct mcontext. On SPARC GNU/Linux, the struct
818 mc_fq, struct rwindow, struct fpq and struct fq types are no longer
819 defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
820 mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
821 fpregset_t type no longer has the name struct fpu. This changes the C++
822 name mangling for interfaces involving those types.
824 * On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
825 synced with the kernel:
827 - PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
828 are not supported on this architecture and have been removed.
830 - PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
831 PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
832 PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
834 Programs that assume the GET/SETREGS ptrace requests are universally
835 available will now fail to build, instead of malfunctioning at runtime.
837 Changes to build and runtime requirements:
839 * Linux kernel 3.2 or later is required at runtime, on all architectures
840 supported by that kernel. (This is a change from version 2.25 only for
843 * GNU Binutils 2.25 or later is now required to build the GNU C Library.
845 * On most architectures, GCC 4.9 or later is required to build the GNU C
846 Library. On powerpc64le, GCC 6.2 or later is required.
848 Older GCC versions and non-GNU compilers are still supported when
849 compiling programs that use the GNU C Library. (We do not know exactly
850 how old, and some GNU extensions to C may be _de facto_ required. If you
851 are interested in helping us make this statement less vague, please
852 contact libc-alpha@sourceware.org.)
854 Security related changes:
856 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
857 to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
859 * LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
860 mode to guard against local privilege escalation attacks (CVE-2017-1000366).
862 * Avoid printing a backtrace from the __stack_chk_fail function since it is
863 called on a corrupt stack and a backtrace is unreliable on a corrupt stack
866 * A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
867 fixed (CVE-2017-12133).
869 The following bugs are resolved with this release:
871 [984] network: Respond to changed resolv.conf in gethostbyname
872 [5010] network: sunrpc service cleanup causes unwanted port mapper traffic
873 [12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
875 [12189] libc: __stack_chk_fail should not attempt a backtrace
877 [14096] time: Race condition on timezone/tst-timezone.out
878 [14172] localedata: az_IR: new locale
879 [14995] build: glibc fails to build if gold is the default linker, even if
881 [15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
882 [16637] network: inet_pton function is accepting IPv6 with bad format
883 [16640] string: string/strtok.c: undefined behaviour inconsistent between
884 x86 and other generic code
885 [16875] localedata: ko_KR: fix lang_name
886 [17225] localedata: ar_SY: localized month names for May and June are
888 [17297] localedata: da_DK: wrong date_fmt string
889 [18907] stdio: Incorrect order of __wur __THROW in <printf.h>
890 [18934] localedata: hu_HU: collate: fix multiple bugs and add tests
891 [18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
892 [19066] localedata: ar_SA abbreviated day and month names are in English
893 [19569] network: resolv: Support an arbitrary number of search domains
894 [19570] network: Implement random DNS server selection in the stub
896 [19838] locale: localedef fails on PA-RISC
897 [19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
898 order of 0D36 and 0D37
899 [19922] localedata: iso14651_t1_common: Define collation for Malayalam
901 [20098] libc: FAIL: debug/backtrace-tst on hppa
902 [20257] network: sunrpc: clntudp_call does not enforce timeout when
904 [20275] localedata: locale day/abday/mon/abmon should not have trailing
906 [20313] localedata: Update locale data to Unicode 9.0
907 [20424] manual: Document how to provide a malloc replacement
908 [20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
910 [20686] locale: Add el_GR@euro to SUPPORTED.
911 [20831] dynamic-link: _dl_map_segments does not test for __mprotect
912 failures consistently
913 [21015] dynamic-link: Document and fix --enable-bind-now
914 [21016] nptl: pthread_cond support is broken on hppa
915 [21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
916 frame-pointer on i386
917 [21049] libc: segfault in longjmp_chk() due to clobbered processor
919 [21075] libc: unused assigment to %g4 in sparc/sparc{64,32}/clone.S
920 [21088] libc: Build fails with --enable-static-nss
921 [21094] math: cosf(1.57079697) has 3 ulp error on targets where the
922 generic c code is used
923 [21109] libc: Tunables broken on big-endian
924 [21112] math: powf has large ulp errors with base close to 1 and exponent
926 [21115] network: sunrpc: Use-after-free in error path in clntudp_call
928 [21120] malloc: glibc malloc is incompatible with GCC 7
929 [21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
931 [21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
932 (-0.0) when linking with -lieee
933 [21171] math: log10, log2 and lgamma return incorrect results
934 [21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
935 [21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
936 [21207] localedata: ce_RU: update weekdays from CLDR
937 [21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
938 [21217] localedata: Update months from CLDR-31
939 [21232] libc: miss posix_fadvise64 on MIPS64 when static linking
940 [21243] libc: support_delete_temp_file should issue warning for failed
942 [21244] libc: support resolv_test_start() socket fd close should be
944 [21253] libc: localedef randomly segfaults when using -fstack-check due to
945 new posix_spawn implementation
946 [21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
947 leads to lower CPU frequency
948 [21259] libc: [alpha] termios.h missing IXANY for POSIX
949 [21261] libc: [sparc64] bits/setjmp.h namespace
950 [21267] network: [mips] bits/socket.h IOC* namespace
951 [21268] libc: [alpha] termios.h NL2, NL3 namespace
952 [21270] libc: mmap64 silently truncates large offset values
953 [21275] libc: posix_spawn always crashes on ia64 now
954 [21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
955 [21280] math: [powerpc] logbl for POWER7 return incorrect results
956 [21289] libc: Incorrect declaration for 32-bit platforms with
957 _FILE_OFFSET_BITS=64 causes build error
958 [21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
959 not support gethostbyname4_r
960 [21298] nptl: rwlock can deadlock on frequent reader/writer phase
962 [21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
964 [21340] libc: Support POSIX_SPAWN_SETSID
965 [21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
966 [21359] network: ns_name_pack needs additional byte in destination buffer
967 [21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
968 against fragmentation attacks (CVE-2017-12132)
969 [21369] network: resolv: Remove EDNS fallback
970 [21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
972 [21386] nptl: Assertion in fork for distinct parent PID is incorrect
973 [21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
974 [21393] stdio: Missing dup3 error check in freopen, freopen64
975 [21396] libc: Use AVX2 memcpy/memset on Skylake server
976 [21399] localedata: Bad description for U00EC in
977 localedata/charmaps/CP1254
978 [21411] malloc: realloc documentation error
979 [21426] network: sys/socket.h uio.h namespace
980 [21428] libc: [aarch64] tst-backtrace5 testsuite failure
981 [21445] libc: signal.h bsd_signal namespace
982 [21455] network: Network headers stdint.h namespace
983 [21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
985 [21475] network: resolv: Overlong search path is truncated mid-label
986 [21511] libc: sigstack namespace
987 [21512] libc: clone() ends up calling exit_group() through _exit() wrapper
988 [21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
989 bits/syscall.h: No such file or directory
990 [21517] libc: struct sigaltstack namespace
991 [21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
992 [21533] localedata: Update locale data to Unicode 10.0
994 ../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
995 junk at end of line, first unrecognized character is `@'
996 [21538] libc: SIG_HOLD missing for XPG4
997 [21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
998 request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
999 [21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
1000 [21543] libc: sigevent namespace
1001 [21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
1002 size for general purpose registers in mcontext_t structure
1003 [21550] libc: sigwait namespace
1004 [21552] libc: XPG4 bsd_signal namespace
1005 [21554] libc: sigpause namespace
1006 [21560] libc: sys/wait.h signal.h namespace
1007 [21561] libc: waitid namespace
1008 [21573] nptl: GCC 7: /usr/bin/install: cannot remove
1009 '/usr/include/stdlib.h': Permission denied
1010 [21575] libc: sys/wait.h missing struct rusage definition
1011 [21584] libc: sigaltstack etc namespace
1012 [21597] libc: siginterrupt namespace
1013 [21607] math: hppa: FAIL: math/test-tgmath
1014 [21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
1016 [21622] libc: [tile] missing SA_* for POSIX.1:2008
1017 [21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
1018 stack and heap (CVE-2017-1000366)
1019 [21625] libc: wait3 namespace
1020 [21654] nss: Incorrect pointer alignment in NSS group merge result
1022 [21657] network: Parse interface zone id for node-local multicast
1023 [21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
1025 [21666] libc: .symver is used on common symbol
1026 [21668] network: resolv: res_init cross-thread broadcast introduces race
1028 [21687] math: tgmath.h totalorder, totalordermag return type
1029 [21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
1031 [21696] libc: Incorrect assumption of of __cpu_mask in
1032 posix/sched_cpucount.c
1033 [21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
1034 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
1036 [21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
1037 leading to relocation crash
1038 [21709] libc: resolv_conf.c:552: update_from_conf: Assertion
1039 `resolv_conf_matches (resp, conf)' failed.
1040 [21710] localedata: Added Samoan language locale for Samoa
1041 [21711] localedata: Pashto yesstr/nostr locale are missing
1042 [21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
1043 __have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
1044 [21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
1045 [21723] localedata: yesstr/nostr missing for Chinese language locale
1046 [21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
1048 [21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
1050 [21728] localedata: New Locale for Tongan language
1051 [21729] localedata: incorrect LC_NAME fields for hi_IN
1052 [21733] localedata: yesstr and nostr are missing for zh_HK
1053 [21734] localedata: Missing yesstr and nostr are for kw_GB
1054 [21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
1055 [21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
1056 [21742] libc: _dl_num_cache_relocations is undefined in libc.a
1057 [21743] localedata: ks_IN@devanagari: abday strings mismatch the day
1059 [21744] libc: Tests failing on --enable-tunables --enable-stack-
1061 [21749] localedata: Wrong abbreviated day name (“abday”) for
1063 [21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
1064 [21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
1065 [21759] localedata: missing yesstr and nostr for Tigrinya
1066 [21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
1067 [21766] localedata: Wrong LC_MESSAGES for om_ET Locale
1068 [21767] localedata: Missing Bislama locales
1069 [21768] localedata: Missing yesstr and nostr for aa_ET
1070 [21770] localedata: Missing Field in li_NL
1071 [21778] nptl: Robust mutex may deadlock
1072 [21779] libc: MicroBlaze segfaults when loading libpthread
1073 [21783] localedata: Fix int_select international_call_prefixes
1074 [21784] localedata: Inconsistency in country_isbn
1075 [21788] localedata: Missing Country Postal Abbreviations
1076 [21794] localedata: Added-country_isbn-for-Italy
1077 [21795] localedata: Add/Fix country_isbn for France
1078 [21796] localedata: Added country_isbn for Republic of Korea
1079 [21797] localedata: Fix inconsistency in country_isbn and missing prefixes
1080 [21799] localedata: Added int_select international_call_prefixes
1081 [21801] localedata: Added int_select international_call_prefixes
1082 [21804] nptl: Double semicolon in thread-shared-types.h
1083 [21807] localedata: LC_ADDRESS fix for pap_CW
1084 [21808] localedata: Fix LC_ADDRESS for pap_AW
1085 [21821] localedata: Added country_name in mai_IN
1086 [21822] localedata: Fix LC_TIME for mai_IN
1087 [21823] localedata: missing yesstr, nostr for sa_IN
1088 [21825] localedata: Fix name_mrs for mag_IN
1089 [21828] localedata: 2.26 changelog should mention user visible changes
1091 [21835] localedata: Added Maithili language locale for Nepal
1092 [21838] localedata: Removed redundant data for the_NP
1093 [21839] localedata: Fix LC_MONETARY for ta_LK
1094 [21844] localedata: Fix Latin characters and Months Sequence.
1095 [21848] localedata: Fix mai_NP Title Name
1100 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
1101 24731-2:2010, is supported to enable declarations of functions from that
1102 TR. Note that not all functions from that TR are supported by the GNU C
1105 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
1106 18661-1:2014, is supported to enable declarations of functions and macros
1107 from that TS. Note that not all features from that TS are supported by
1110 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
1111 18661-4:2015, is supported to enable declarations of functions and macros
1112 from that TS. Note that most features from that TS are not supported by
1115 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
1116 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
1117 Since the GNU C Library defaults to a much newer revision of POSIX, this
1118 will only affect programs that specifically request an old conformance
1119 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
1120 see a change in the visible declarations, but a program compiled with
1121 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
1124 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
1125 defined by all multithreaded code, but glibc has not required this for
1128 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
1129 means that in a future release, the macros “major”, “minor”, and “makedev”
1130 will only be available from <sys/sysmacros.h>.
1132 These macros are not part of POSIX nor XSI, and their names frequently
1133 collide with user code; see for instance glibc bug 19239 and Red Hat bug
1134 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
1135 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
1138 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
1139 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
1140 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
1142 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
1143 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
1144 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
1145 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
1146 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
1147 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
1148 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
1149 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
1150 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
1151 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
1152 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
1155 * New <math.h> features are added from TS 18661-1:2014:
1157 - Signaling NaN macros: SNANF, SNAN, SNANL.
1159 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
1160 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
1161 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
1163 - llogb functions: the llogb, llogbf and llogbl functions, and the
1164 FP_LLOGB0 and FP_LLOGBNAN macros.
1166 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
1169 - Comparison macros: iseqsig.
1171 - Classification macros: iscanonical, issubnormal, iszero.
1173 - Total order functions: totalorder, totalorderf, totalorderl,
1174 totalordermag, totalordermagf, totalordermagl.
1176 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
1178 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
1179 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
1181 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
1182 are added to libc. They convert a floating-point number into string.
1184 * Most of glibc can now be built with the stack smashing protector enabled.
1185 It is recommended to build glibc with --enable-stack-protector=strong.
1186 Implemented by Nick Alcock (Oracle).
1188 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
1189 intended to be used instead of memset() to erase sensitive data after use;
1190 the compiler will not optimize out calls to explicit_bzero even if they
1191 are "unnecessary" (in the sense that no _correct_ program can observe the
1192 effects of the memory clear).
1194 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
1195 to float instead of double. This does not affect the ABI of any libraries
1196 that are part of the GNU C Library, but may affect the ABI of other
1197 libraries that use this type in their interfaces.
1199 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
1200 float_t and double_t types are now defined to long double instead of float
1201 and double. These options are not the default, and this does not affect
1202 the ABI of any libraries that are part of the GNU C Library, but it may
1203 affect the ABI of other libraries that use this type in their interfaces,
1204 if they are compiled or used with those options.
1206 * The getentropy and getrandom functions, and the <sys/random.h> header file
1209 * The buffer size for byte-oriented stdio streams is now limited to 8192
1210 bytes by default. Previously, on Linux, the default buffer size on most
1211 file systems was 4096 bytes (and thus remains unchanged), except on
1212 network file systems, where the buffer size was unpredictable and could be
1213 as large as several megabytes.
1215 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
1216 for the Linux quota interface which predates kernel version 2.4.22 has
1219 * The malloc_get_state and malloc_set_state functions have been removed.
1220 Already-existing binaries that dynamically link to these functions will
1221 get a hidden implementation in which malloc_get_state is a stub. As far
1222 as we know, these functions are used only by GNU Emacs and this change
1223 will not adversely affect already-built Emacs executables. Any undumped
1224 Emacs executables, which normally exist only during an Emacs build, should
1225 be rebuilt by re-running “./configure; make” in the Emacs build tree.
1227 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
1228 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
1229 “no-ip6-dotint” had already been the default, and support for the
1230 “ip6-dotint” option was removed from the Internet in 2006.
1232 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
1233 flag from <resolv.h> have been removed. The option relied on a
1234 backwards-incompatible DNS extension which was never deployed on the
1237 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
1238 RES_BLAST defined in the <resolv.h> header file have been deprecated.
1239 They were already unimplemented.
1241 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
1242 _res.flags are deprecated. The flag was standardized in RFC 2133, but
1243 removed again from the IETF name lookup interface specification in RFC
1244 2553. Applications should use getaddrinfo instead.
1246 * DNSSEC-related declarations and definitions have been removed from the
1247 <arpa/nameser.h> header file, and libresolv will no longer attempt to
1248 decode the data part of DNSSEC record types. Previous versions of glibc
1249 only implemented minimal support for the previous version of DNSSEC, which
1250 is incompatible with the currently deployed version.
1252 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
1253 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
1254 <arpa/nameser.h> header file because the distinction between RR types and
1255 meta-RR types is not officially standardized, subject to revision, and
1256 thus not suitable for encoding in a macro.
1258 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
1259 and rhook members of the res_state type in <resolv.h> have been removed.
1260 The glibc stub resolver did not support these hooks, but the header file
1261 did not reflect that.
1263 * For multi-arch support it is recommended to use a GCC which has
1264 been built with support for GNU indirect functions. This ensures
1265 that correct debugging information is generated for functions
1266 selected by IFUNC resolvers. This support can either be enabled by
1267 configuring GCC with '--enable-gnu-indirect-function', or by
1268 enabling it by default by setting 'default_gnu_indirect_function'
1269 variable for a particular architecture in the GCC source file
1272 * GDB pretty printers have been added for mutex and condition variable
1273 structures in POSIX Threads. When installed and loaded in gdb these pretty
1274 printers show various pthread variables in human-readable form when read
1275 using the 'print' or 'display' commands in gdb.
1277 * Tunables feature added to allow tweaking of the runtime for an application
1278 program. This feature can be enabled with the '--enable-tunables' configure
1279 flag. The GNU C Library manual has details on usage and README.tunables has
1280 instructions on adding new tunables to the library.
1282 * A new version of condition variables functions have been implemented in
1283 the NPTL implementation of POSIX Threads to provide stronger ordering
1286 * A new version of pthread_rwlock functions have been implemented to use a more
1287 scalable algorithm primarily through not using a critical section anymore to
1290 Security related changes:
1292 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
1293 have been created with makecontext could fail to terminate due to a
1294 missing .cantunwind annotation. This has been observed to lead to a hang
1295 (denial of service) in some Go applications compiled with gccgo. Reported
1296 by Andreas Schwab. (CVE-2016-6323)
1298 * The DNS stub resolver functions would crash due to a NULL pointer
1299 dereference when processing a query with a valid DNS question type which
1300 was used internally in the implementation. The stub resolver now uses a
1301 question type which is outside the range of valid question type values.
1304 The following bugs are resolved with this release:
1306 [4099] stdio: Overly agressive caching by stream i/o functions.
1307 [7065] build: Support building glibc with -fstack-protector or -fstack-
1309 [9842] localedata: en_CA: incorrect date format
1310 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
1311 before it started waiting
1312 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
1313 [15765] nptl: sem_open is wrongly a cancellation point
1314 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
1315 [16458] libc: endian.h and netinet/in.h byte order macros return values of
1317 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
1318 library linked with pthread
1319 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
1320 "FIXME: Ingo" issue)
1321 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
1322 [17252] libc: getrandom and getentropy syscall
1323 [17730] malloc: thread-local storage is sometimes improperly free()'d
1324 after being __libc_memalign()'d
1325 [18241] stdio: failed fseek on memstream does not set errno and can fail
1327 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
1329 [18463] nptl: pthread_cond_broadcast issue when surrounded by
1330 PTHREAD_PRIO_INHERIT mutex on ARM
1331 [18784] network: res_query and related function crash for special record
1332 type queries (CVE-2015-5180)
1333 [19380] math: strtod does not raise "inexact"
1334 [19387] string: Integer overflow in memchr
1335 [19390] string: Integer overflow in strncat
1336 [19398] build: linknamespace tests fail with massively parallel build
1337 [19402] nptl: Deadlock with robust shared mutex and asynchronous
1339 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
1340 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
1341 [19514] libc: [PATCH] Fix spelling errors in spelling
1342 "implement"/"implementation" in several places
1343 [19582] network: Deprecate RES_USE_INET6
1344 [19673] manual: clog10 docs appear to be erroneous
1345 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
1346 causes a segmentation fault
1347 [19826] libc: invalid pointer returned from __tls_get_addr with static
1349 [20016] network: resolv: Remove hooks support from the API
1350 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
1352 [20033] math: [x86_64] vectorized math function don't call the __finite
1354 [20116] nptl: use after free in pthread_create
1355 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
1356 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
1358 [20311] nptl: please install proc_service.h
1359 [20366] libc: Compilation errors in installed headers in strict-compliance
1361 [20370] malloc: malloc: Arena free list management is still racy
1362 (incorrect fix in bug 19243)
1363 [20386] libc: assert (X = 0) does not result in GCC warning
1364 [20432] malloc: malloc: Minimize interface required for interposition
1365 [20435] libc: Missing unwind info in __startcontext causes infinite loop
1366 in _Unwind_Backtrace (CVE-2016-6323)
1367 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
1368 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
1370 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
1371 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
1372 [20477] network: resolv: incorrect double-checked locking related to
1374 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
1376 [20495] math: x86_64 performance degradation due to AVX/SSE transition
1378 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
1379 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
1380 cause transition penalty
1381 [20517] math: sparcv9 missing fdiml compat symbol
1382 [20524] manual: strverscmp is inconsistent
1383 [20525] libc: <sys/quota.h> should be based on kernel headers
1384 [20539] math: GCC 7 -static -lm fails to link at -O3
1385 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
1387 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
1389 [20591] network: Remove obsolete DNSSEC support
1390 [20592] network: DNS resource record type classification macros in
1391 <arpa/nameser.h> are incorrect
1392 [20593] network: Update DNS RR type definitions
1393 [20611] network: getaddrinfo accepts invalid numeric scope IDs
1394 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
1396 [20629] network: libresolv: Remove support for bitstring labels
1398 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
1399 assertion: "maxidx >= 2"
1400 [20660] math: [arm] Use VSQRT
1401 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
1402 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
1403 [20689] libc: Test for FMA should also check for AVX.
1404 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
1405 [20715] math: iszero macro breaks existing code
1406 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
1407 [20728] libc: powerpc: Missing TOC stub in clone
1408 [20729] build: glibc-2.24 fails to build for i486 with -Os
1409 [20750] build: Build fails with default PIE enabled gcc-6.x
1410 [20768] math: [alpha] sqrt fegetenv namespace
1411 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
1413 [20787] math: float_t is defined as float incorrectly on x86_64 even if
1414 __FLT_EVAL_METHOD__ is 2
1415 [20790] network: rpcgen buffer overrun in get_prog_declaration
1416 [20822] nptl: race condition in __lll_unlock_elision on powerpc
1417 [20829] libc: crypt snprintf namespace
1418 [20847] libc: tst-vfork3 failure
1419 [20855] math: Default bits/mathdef.h has inappropriate float_t
1420 [20859] math: [sh4] FP_ILOGB0 invalid
1421 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
1422 U+20AC), not same as GBK
1423 [20915] dynamic-link: global-dynamic TLS broken on aarch64
1424 [20916] math: pow handling of sNaN arguments
1425 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
1426 [20919] math: Bad pow (qNaN, 0) result with -lieee
1427 [20940] math: hypot sNaN handling
1428 [20947] math: fmax, fmin sNaN handling
1429 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
1430 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
1432 [20971] string: powerpc64/power7 memchr overflows internal pointer check
1433 [20973] nptl: robust mutexes: Lost wake-ups
1434 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
1435 [20978] nis: strlen on null pointer in nss_nisplus
1436 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
1438 [21014] string: i686 memchr overflows internal pointer check
1439 [21019] libc: [mips] n32 lseek incorrect on overflow
1440 [21022] libc: [microblaze] __backtrace get_frame_size namespace
1441 [21026] libc: [MIPS] readahead syscall is broken on n64
1442 [21028] math: Fallback fesetexceptflag should always succeed
1443 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
1444 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
1446 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
1447 [21061] librt: [microblaze] librt lost clock_* exports
1448 [21073] libc: tunables: insecure environment variables passed to
1449 subprocesses with AT_SECURE
1450 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
1454 * The minimum Linux kernel version that this version of the GNU C Library
1455 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
1456 kernel version 2.6.32 or later suffices (on architectures that already
1457 required kernel versions more recent than 3.2, those requirements remain
1458 unchanged). Linux 3.2 or later kernel headers are required on all
1461 * The pap_AN locale has been deleted. This has been deprecated for a long
1462 time. It has been replaced by pap_AW & pap_CW, both of which have long
1463 been included in previous releases.
1465 * The readdir_r and readdir64_r functions have been deprecated. It is
1466 recommended to use readdir and readdir64 instead.
1468 * The type “union wait” has been removed. It was deprecated in the early
1469 1990s and never part of POSIX. Application code should use the int type
1470 instead of “union wait”.
1472 * A new NSS action is added to facilitate large distributed system
1473 administration. The action, MERGE, allows remote user stores like LDAP
1474 to be merged into local user stores like /etc/groups in order to provide
1475 easy to use, updated, and managed sets of merged credentials. The new
1476 action can be used by configuring it in /etc/nsswitch.conf:
1477 group: files [SUCCESS=merge] nis
1478 Implemented by Stephen Gallagher (Red Hat).
1480 * The deprecated __malloc_initialize_hook variable has been removed from the
1483 * The long unused localedef --old-style option has been removed. It hasn't
1484 done anything in over 16 years. Scripts using this option can safely
1487 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
1488 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
1489 return the next representable value in the direction of positive infinity
1490 and the nextdown functions return the next representable value in the
1491 direction of negative infinity. These are currently enabled as GNU
1494 Security related changes:
1496 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
1497 could result in a stack overflow when getnetbyname was called with an
1498 overly long name. (CVE-2016-3075)
1500 * Previously, getaddrinfo copied large amounts of address data to the stack,
1501 even after the fix for CVE-2013-4458 has been applied, potentially
1502 resulting in a stack overflow. getaddrinfo now uses a heap allocation
1503 instead. Reported by Michael Petlan. (CVE-2016-3706)
1505 * The glob function suffered from a stack-based buffer overflow when it was
1506 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
1507 Reported by Alexander Cherepanov. (CVE-2016-1234)
1509 * The Sun RPC UDP client could exhaust all available stack space when
1510 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
1511 alloca plugin for GCC. (CVE-2016-4429)
1513 * The IPv6 name server management code in libresolv could result in a memory
1514 leak for each thread which is created, performs a failing naming lookup,
1515 and exits. Over time, this could result in a denial of service due to
1516 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
1518 The following bugs are resolved with this release:
1520 [1170] localedata: ne_NP: update Nepali locale definition file
1521 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
1523 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
1524 [6796] math: fdim() does not set errno on overflow
1525 [10354] libc: posix_spawn should use vfork() in more cases than presently
1526 [11213] localedata: localedata: add copyright disclaimer to locale files
1527 [12143] localedata: chr_US: new Cherokee locale
1528 [12450] localedata: sgs_LT: new locale
1529 [12676] localedata: ln_CD: new locale
1530 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
1532 [13304] math: fma, fmaf, fmal produce wrong results
1533 [14259] build: --localedir arg to configure is ignored
1534 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
1535 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
1536 [14934] localedata: es_CL: wrong first weekday chilean locale
1537 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
1539 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
1541 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
1542 [15368] nptl: raise() is not async-signal-safe
1543 [15479] math: ceil, floor, round and trunc raise inexact exception
1544 [15578] localedata: kk_KZ: various updates
1545 [16003] localedata: pap_AN: punt old locale
1546 [16137] localedata: iw_IL: punt old locale
1547 [16190] localedata: eo: new esperanto locale
1548 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
1549 [16742] malloc: race condition: pthread_atfork() called before first
1550 malloc() results in unexpected locking behaviour/deadlocks
1551 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
1553 [16983] localedata: postal_fmt does not allow %l and %n modifiers
1554 [17565] localedata: pt_PT: wrong (work-)week start
1555 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
1556 [17950] build: Build fails with -msse
1557 [18205] localedata: be_BY*: wrong first_weekday and first_workday
1558 [18433] libc: posix_spawn does not return correctly upon failure to
1560 [18453] localedata: charmaps/IBM875: incorrect codes
1561 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
1563 [18896] localedata: he_IL: improvements for currency
1564 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
1565 Romanian locale data
1566 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
1568 [19056] libc: Deprecate readdir_r
1569 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
1571 [19198] localedata: nl_NL: small improvements for Dutch locales
1572 [19257] network: Per-thread memory leak in __res_vinit with IPv6
1573 nameservers (CVE-2016-5417)
1574 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
1576 [19400] locale: Language missing in "iso-639.def", trivial fix in
1578 [19431] malloc: Deadlock between fflush, getdelim, and fork
1579 [19505] libc: Incorrect file descriptor validity checks in
1580 posix_spawn_file_actions_add{open,close,dup2}
1581 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
1582 when using RTLD_NEXT
1583 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
1584 `intl/{gettextP,loadinfo}.h'
1585 [19534] libc: execle, execlp may use malloc
1586 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
1587 [19573] network: res_nclose and __res_maybe_init disagree about name
1588 server initialization, breaking Hesiod
1589 [19575] localedata: Status of GB18030 tables
1590 [19581] localedata: sr_* date_fmt string contains additional newline
1591 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
1593 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
1594 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
1595 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
1596 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
1598 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
1600 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
1602 [19610] dynamic-link: ldconfig -X removes stale symbolic links
1603 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
1604 [19633] locale: strfmon_l applies global locale to number formatting
1605 [19642] network: Memory leak in getnameinfo
1606 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
1607 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
1609 [19654] math: [x86_64] Need testcase for BZ #19590 fix
1610 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
1612 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
1613 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
1615 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
1617 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
1619 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
1620 pointers and lengths in error-case.
1621 [19727] locale: Converting from/to UTF-xx with iconv() does not always
1622 report errors on UTF-16 surrogates values.
1623 [19755] nscd: nscd assertion failure in gc
1624 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
1625 [19759] libc: mempcpy shouldn't be inlined
1626 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
1627 [19765] libc: s390 needs an optimized mempcpy
1628 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
1629 NAME_MAX limit assumption (CVE-2016-1234)
1630 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
1631 [19787] network: Missing and incorrect truncation checks in getnameinfo
1632 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
1634 [19791] network: Assertion failure in res_query.c with un-connectable name
1636 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
1637 [19822] math: libm.so install clobbers old version
1638 [19825] network: resolv: send_vc can return uninitialized data in second
1639 response to getaddrinfo
1640 [19830] network: nss_dns: should check RDATA length against buffer length
1641 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
1642 confronted with A/AAAA records of invalid size
1643 [19837] nss: nss_db: No retries for some long lines with a larger buffer
1644 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
1645 [19853] stdio: Printing IBM long double in decimal with high precision is
1647 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
1648 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
1649 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
1651 [19865] network: Assertion failure or memory leak in
1652 _nss_dns_getcanonname_r
1653 [19868] network: nss_dns: netent code does not skip over non-PTR records
1654 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
1656 [19881] string: Improve x86-64 memset
1657 [19907] string: Incorrect memcpy tests
1658 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
1660 [19925] libc: termios.h XCASE namespace
1661 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
1662 [19929] libc: limits.h NL_NMAX namespace
1663 [19931] stdio: Memory leak in vfprintf
1664 [19957] libc: clone(CLONE_VM) access invalid parent memory
1665 [19963] localedata: en_IL: New locale
1666 [19989] stdio: stdio.h cuserid namespace
1667 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
1669 [19996] locale: langinfo.h nl_langinfo_l namespace
1670 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
1671 [20010] network: getaddrinfo: Stack overflow in hostent translation
1673 [20012] stdio: libio: fmemopen append mode failure
1674 [20014] stdio: stdio.h namespace for pre-threads POSIX
1675 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
1676 [20023] libc: fcntl.h timespec namespace
1677 [20024] math: [x86_64] vectorized sincos trashes the stack
1678 [20031] network: nss_hesiod: Heap overflow in get_txt_records
1679 [20041] time: sys/time.h timespec namespace
1680 [20043] libc: unistd.h missing cuserid for UNIX98 and before
1681 [20044] libc: unistd.h missing pthread_atfork for UNIX98
1682 [20051] libc: ttyslot in wrong header under wrong conditions
1683 [20054] libc: gethostname not declared for XPG4
1684 [20055] libc: termios.h missing tcgetsid for XPG4
1685 [20072] dynamic-link: x86 init_cpu_features is called twice in static
1687 [20073] libc: sys/stat.h fchmod namespace
1688 [20074] libc: stdlib.h rand_r namespace
1689 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
1690 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
1692 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
1693 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
1695 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
1696 [20119] libc: Wrong mask for processors level type from CPUID
1697 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
1698 AS not supporting AVX512
1699 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
1701 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
1702 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
1704 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
1705 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
1706 [20178] libc: posix_spawn{p} should not call exit
1707 [20191] stdio: libio: vtables hardening
1708 [20195] string: FMA4 detection requires CPUID execution with register
1710 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
1711 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
1713 [20212] math: acos (sNaN) returns sNaN
1714 [20213] math: asin (sNaN) returns sNaN
1715 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
1716 [20218] math: [i386] asinhl (sNaN) returns sNaN
1717 [20219] math: [i386] atanhl (sNaN) returns sNaN
1718 [20222] stdio: fopencookie: Mangle function pointers
1719 [20224] math: [i386] cbrtl (sNaN) returns sNaN
1720 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
1721 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
1723 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
1724 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
1725 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
1726 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
1727 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
1728 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
1729 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
1730 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
1731 [20240] math: modf (sNaN) returns sNaN
1732 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
1733 [20250] math: frexp (sNaN) returns sNaN
1734 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
1735 [20255] math: [i386] fdim, fdimf return with excess range and precision /
1737 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
1738 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
1739 subscript is below array bounds [-Werror=array-bounds]
1740 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
1741 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
1743 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
1744 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
1746 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
1747 "invalid" exceptions
1748 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
1749 [20316] localedata: id_ID: Februari instead of Pebruari
1750 [20327] string: POWER8 strcasecmp returns incorrect result
1751 [20347] math: Failure: Test: j0_downward (0xap+0)
1752 [20348] libc: FAIL: misc/tst-preadvwritev64
1753 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
1754 [20350] libc: There is no test for p{read,write}64
1755 [20357] math: Incorrect cos result for 1.5174239687223976
1756 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
1760 * Unicode 8.0.0 Support: Character encoding, character type info, and
1761 transliteration tables are all updated to Unicode 8.0.0, using new
1762 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
1763 These updates cause user visible changes, such as the fixes for bugs
1764 89, 16061, and 18568.
1766 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
1767 kernel-internal CPU set size. This means that requests that change the
1768 CPU affinity which failed before (for example, an all-ones CPU mask) will
1769 now succeed. Applications that need to determine the effective CPU
1770 affinities need to call sched_getaffinity or pthread_getaffinity_np after
1771 setting it because the kernel can adjust it (and the previous size check
1772 would not detect this in the majority of cases).
1774 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
1775 the following new symbols are used: fts64_children, fts64_close,
1776 fts64_open, fts64_read and fts64_set.
1778 * getaddrinfo now detects certain invalid responses on an internal netlink
1779 socket. If such responses are received, an affected process will
1780 terminate with an error message of "Unexpected error <number> on netlink
1781 descriptor <number>" or "Unexpected netlink response of size <number> on
1782 descriptor <number>". The most likely cause for these errors is a
1783 multi-threaded application which erroneously closes and reuses the netlink
1784 file descriptor while it is used by getaddrinfo.
1786 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
1787 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
1788 unnecessary serialization of memory allocation requests across threads.
1789 The defect is now corrected. Users should see a substantial increase in
1790 the concurent throughput of allocation requests for applications which
1791 trigger this bug. Affected applications typically create and
1792 destroy threads frequently. (Bug 19048 was reported and analyzed by
1795 * There is now a --disable-timezone-tools configure option for disabling the
1796 building and installing of the timezone related utilities (zic, zdump, and
1797 tzselect). This is useful for people who build the timezone data and code
1798 independent of the GNU C Library.
1800 * The obsolete header <regexp.h> has been removed. Programs that require
1801 this header must be updated to use <regex.h> instead.
1803 * The obsolete functions bdflush, create_module, get_kernel_syms,
1804 query_module and uselib are no longer available to newly linked binaries;
1805 the header <sys/kdaemon.h> has been removed. These functions and header
1806 were specific to systems using the Linux kernel and could not usefully be
1807 used with the GNU C Library on systems with version 2.6 or later of the
1810 * Optimized string, wcsmbs and memory functions for IBM z13.
1811 Implemented by Stefan Liebler.
1813 * Newly linked programs that define a variable called signgam will no longer
1814 have it set by the lgamma, lgammaf and lgammal functions. Programs that
1815 require signgam to be set by those functions must ensure that they use the
1816 variable provided by the GNU C Library and declared in <math.h>, without
1817 defining their own copy.
1819 * The minimum GCC version that can be used to build this version of the GNU
1820 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
1821 still be used to compile programs using the GNU C Library.
1823 Security related changes:
1825 * An out-of-bounds value in a broken-out struct tm argument to strftime no
1826 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
1828 * The LD_POINTER_GUARD environment variable can no longer be used to disable
1829 the pointer guard feature. It is always enabled. Previously,
1830 LD_POINTER_GUARD could be used to disable security hardening in binaries
1831 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
1834 * An integer overflow in hcreate and hcreate_r could lead to an
1835 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
1837 * The catopen function no longer has unbounded stack usage. Reported by
1838 Max. (CVE-2015-8779)
1840 * The nan, nanf and nanl functions no longer have unbounded stack usage
1841 depending on the length of the string passed as an argument to the
1842 functions. Reported by Joseph Myers. (CVE-2014-9761)
1844 * A stack-based buffer overflow was found in libresolv when invoked from
1845 libnss_dns, allowing specially crafted DNS responses to seize control
1846 of execution flow in the DNS client. The buffer overflow occurs in
1847 the functions send_dg (send datagram) and send_vc (send TCP) for the
1848 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
1849 family. The use of AF_UNSPEC triggers the low-level resolver code to
1850 send out two parallel queries for A and AAAA. A mismanagement of the
1851 buffers used for those queries could result in the response of a query
1852 writing beyond the alloca allocated buffer created by
1853 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
1854 the overflow. Thanks to the Google Security Team and Red Hat for
1855 reporting the security impact of this issue, and Robert Holiday of
1856 Ciena for reporting the related bug 18665. (CVE-2015-7547)
1858 The following bugs are resolved with this release:
1860 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
1861 [887] math: Math library function "logb" and "nextafter" inconsistent
1862 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
1863 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
1864 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
1865 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
1867 [4404] localedata: German translation of "Alarm clock" is misleading
1868 [6799] math: nextafter() and nexttoward() doen't set errno on
1869 overflow/underflow errors
1870 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
1872 [10432] nis: _nss_nis_setnetgrent assertion failure
1873 [11460] libc: fts has no LFS support
1874 [12926] network: getaddrinfo()/make_request() may spin forever
1875 [13065] nptl: Race condition in pthread barriers
1876 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
1877 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
1879 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
1880 [14912] libc: Rename non-installed bits/*.h headers
1881 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
1882 [15367] math: Let gcc use __builtin_isinf
1883 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
1884 [15421] math: lgamma wrongly sets signgam for ISO C
1885 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
1886 FE_INVALID with argument out of range
1887 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
1889 [15786] dynamic-link: ifunc resolver functions can smash function
1891 [15918] math: Unnecessary check for equality in hypotf()
1892 [16061] localedata: Review / update transliteration data
1893 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
1895 [16141] time: strptime %z offset restriction
1896 [16171] math: drem should be alias of remainder
1897 [16296] math: fegetround is pure?
1898 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
1899 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
1901 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
1902 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
1904 [16422] math: [powerpc] math-float, math-double failing llrint tests with
1905 "Exception "Inexact" set" on ppc32
1906 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
1907 [16517] math: Missing underflow exception from tanf/tan/tanl
1908 [16519] math: Missing underflow exception from sinhf
1909 [16520] math: Missing underflow exception from tanhf
1910 [16521] math: Missing underflow exception from exp2
1911 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
1913 [16734] stdio: fopen calls mmap to allocate its buffer
1914 [16961] math: nan function incorrect handling of bad sequences
1915 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
1916 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
1917 [16985] locale: localedef: confusing error message when opening output
1919 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
1920 [17197] locale: Redundant shift character in iconv conversion output at
1922 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
1923 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
1924 [17250] dynamic-link: static linking breaks nss loading
1925 (getaddrinfo/getpwnam/etc...)
1926 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
1928 [17441] math: isnan() should use __builtin_isnan() in GCC
1929 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
1930 (related to lock elision)
1931 [17787] manual: Exponent on page 324 of the PDF ends prematurely
1932 [17886] time: strptime should be able to parse "Z" as a timezone with %z
1933 [17887] time: strptime should be able to parse "+01:00" style timezones
1934 [17905] libc: catopen() Multiple unbounded stack allocations
1936 [18084] libc: backtrace (..., 0) dumps core on x86
1937 [18086] libc: nice() sets errno to 0 on success
1938 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
1939 is too large (CVE-2015-8778)
1940 [18251] dynamic-link: SONAME missing when audit modules provides path
1941 [18265] libc: add attributes for wchar string and memory functions
1942 [18370] math: csqrt missing underflows
1943 [18421] libc: [hppa] read-only segment has dynamic relocations
1944 [18472] libc: Obsolete syscall wrappers should be compat symbols
1945 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
1946 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
1947 [18525] localedata: Remove locale timezone information
1948 [18560] libc: [powerpc] spurious bits/ipc.h definitions
1949 [18568] localedata: Update locale data to Unicode 8.0
1950 [18589] locale: sort-test.sh fails at random
1951 [18595] math: ctan, ctanh missing underflows
1952 [18604] libc: assert macro-expands its argument
1953 [18610] math: S390: fetestexcept() reports any exception if DXC-code
1954 contains a vector instruction exception.
1955 [18611] math: j1, jn missing errno setting on underflow
1956 [18618] localedata: sync Chechen locale definitions with other *_RU
1958 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
1959 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
1960 [18665] network: In send_dg, the recvfrom function is NOT always using the
1961 buffer size of a newly created buffer (CVE-2015-7547)
1962 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
1964 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
1966 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
1967 [18699] math: tilegx cproj() for various complex infinities does not yield
1969 [18724] libc: Harden put*ent functions against data injection
1970 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
1971 [18755] build: build errors with -DNDEBUG
1972 [18757] stdio: fmemopen fails to set errno on failure
1973 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
1975 [18781] libc: openat64 lacks O_LARGEFILE
1976 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
1977 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
1978 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
1979 [18790] math: [ldbl-128ibm] tanhl inaccurate
1980 [18795] libc: stpncpy fortification misses buffer lengths that are
1981 statically too large
1982 [18796] build: build fails for --disable-mathvec
1983 [18803] math: hypot missing underflows
1984 [18820] stdio: fmemopen may leak memory on failure
1985 [18823] math: csqrt spurious underflows
1986 [18824] math: fma spurious underflows
1987 [18825] math: pow missing underflows
1988 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
1989 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
1990 [18870] build: sem_open.c fails to compile with missing symbol
1992 [18872] stdio: Fix memory leak in printf_positional
1993 [18873] libc: posix_fallocate overflow check ineffective
1994 [18875] math: Excess precision leads incorrect libm
1995 [18877] libc: arm: mmap offset regression
1996 [18887] libc: memory corruption when using getmntent on blank lines
1997 [18918] localedata: hu_HU: change time to HH:MM:SS format
1998 [18921] libc: Regression: extraneous stat() and fstat() performed by
2000 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
2001 binaries (CVE-2015-8777)
2002 [18951] math: tgamma missing underflows
2003 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
2005 [18953] localedata: lt_LT: change currency symbol to the euro
2006 [18956] math: powf inaccuracy
2007 [18961] math: [i386] exp missing underflows
2008 [18966] math: [i386] exp10 missing underflows
2009 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
2010 [18969] build: multiple string test failures due to missing locale
2012 [18970] libc: Reference of pthread_setcancelstate in libc.a
2013 [18977] math: float / long double Bessel functions not in XSI POSIX
2014 [18980] math: i386 libm functions return with excess range and precision
2015 [18981] math: i386 scalb*, ldexp return with excess range and precision
2016 [18982] stdio: va_list and vprintf
2017 [18985] time: Passing out of range data to strftime() causes a segfault
2019 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
2020 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
2021 [19012] locale: iconv_open leaks memory on error path
2022 [19016] math: clog, clog10 inaccuracy
2023 [19018] nptl: Mangle function pointers in tls_dtor_list
2024 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
2025 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
2026 [19048] malloc: malloc: arena free list can become cyclic, increasing
2028 [19049] math: [powerpc] erfc incorrect zero sign
2029 [19050] math: [powerpc] log* incorrect zero sign
2030 [19058] math: [x86_64] Link fail with -fopenmp and -flto
2031 [19059] math: nexttoward overflow incorrect in non-default rounding modes
2032 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
2033 [19074] network: Data race in _res_hconf_reorder_addrs
2034 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
2035 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
2036 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
2038 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
2040 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
2041 [19086] manual: posix_fallocate64 documented argument order is wrong.
2042 [19088] math: lround, llround missing exceptions close to overflow
2044 [19094] math: lrint, llrint missing exceptions close to overflow threshold
2045 [19095] math: dbl-64 lrint incorrect for 64-bit long
2046 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
2047 [19124] dynamic-link: ld.so failed to build with older assmebler
2048 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
2049 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
2050 [19134] math: [powerpc32] lround, lroundf spurious exceptions
2051 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
2052 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
2053 pthread_setaffinity_np
2054 [19156] math: [ldbl-128] j0l spurious underflows
2055 [19164] nptl: tst-getcpu fails with many possible CPUs
2056 [19168] math: math/test-ildoubl and math/test-ldouble failure
2057 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
2058 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
2060 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
2061 (FE_NOMASK_ENV) do not clear SSE exceptions
2062 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
2063 _int_new_arena/reused_arena
2064 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
2065 [19201] math: dbl-64 remainder incorrect sign of zero result
2066 [19205] math: bits/math-finite.h conditions do not match math.h and
2068 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
2069 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
2070 for C99-based standards
2071 [19212] libc: features.h not -Wundef clean
2072 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
2074 [19214] libc: Family and model identification for AMD CPU's are incorrect.
2075 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
2076 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
2078 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
2079 "inexact" exceptions
2080 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
2082 [19242] libc: strtol incorrect in Turkish locales
2083 [19243] malloc: reused_arena can pick an arena on the free list, leading
2084 to an assertion failure and reference count corruption
2085 [19253] time: tzset() ineffective when temporary TZ did not include DST
2087 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
2088 [19270] math: [hppa] Shared libm missing __isnanl
2089 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
2090 MAP_HUGETLB and MAP_STACK defines
2091 [19313] nptl: Wrong __cpu_mask for x32
2092 [19347] libc: grantpt: try to force a specific gid even without pt_chown
2093 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
2094 [19350] math: [ldbl-128ibm] sinhl spurious overflows
2095 [19351] math: [ldbl-128ibm] logl inaccurate near 1
2096 [19363] time: x32: times() return value wrongly truncates/sign extends
2098 [19367] dynamic-link: Improve branch prediction on Silvermont
2099 [19369] network: Default domain name not reset by res_ninit when "search"
2100 / "domain" entry is removed from resolv.conf
2101 [19375] math: powerpc: incorrect results for POWER7 logb with negative
2103 [19385] localedata: bg_BG: time separator should be colon, not comma
2104 [19408] libc: linux personality syscall wrapper may erroneously return an
2105 error on 32-bit architectures
2106 [19415] libc: dladdr returns wrong names on hppa
2107 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
2108 IBM905, IBM907, and IBM909
2109 [19439] math: Unix98 isinf and isnan functions conflict with C++11
2110 [19443] build: build failures with -DDEBUG
2111 [19451] build: Make check fails on test-double-vlen2
2112 [19462] libc: Glibc failed to build with -Os
2113 [19465] math: Wrong code with -Os
2114 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
2116 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
2118 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
2119 [19486] math: S390: Math tests fail with "Exception Inexact set".
2120 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
2121 [19550] libc: [mips] mmap negative offset handling inconsistent with other
2123 [19590] math: Fail to build shared objects that use libmvec.so functions.
2127 * The following bugs are resolved with this release:
2129 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
2130 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
2131 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
2132 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
2133 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
2134 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
2135 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
2136 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
2137 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
2138 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
2139 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
2140 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
2141 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
2142 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
2143 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
2144 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
2145 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
2146 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
2147 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
2148 18657, 18676, 18694, 18696, 18887.
2150 * Cache information can be queried via sysconf() function on s390 e.g. with
2151 _SC_LEVEL1_ICACHE_SIZE as argument.
2153 * A buffer overflow in gethostbyname_r and related functions performing DNS
2154 requests has been fixed. If the NSS functions were called with a
2155 misaligned buffer, the buffer length change due to pointer alignment was
2156 not taken into account. This could result in application crashes or,
2157 potentially arbitrary code execution, using crafted, but syntactically
2158 valid DNS responses. (CVE-2015-1781)
2160 * The time zone file parser has been made more robust against crafted time
2161 zone files, avoiding heap buffer overflows related to the processing of
2162 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
2163 large time zone data files. Overly long time zone specifiers in the TZ
2164 variable no longer result in stack overflows and crashes.
2166 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
2167 for LD and GD on x86 and x86-64, has been implemented. You will need
2168 binutils-2.24 or later to enable this optimization.
2170 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
2171 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
2172 Hat). These updates cause user visible changes, such as the fix for bug
2175 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
2176 and getXXbyYY NSS calls for the same database, causing a denial-of-service
2177 condition in some applications.
2179 * Added vector math library named libmvec with the following vectorized x86_64
2180 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
2182 The library can be disabled with --disable-mathvec. Use of the functions is
2183 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
2184 Shared library libmvec.so is linked in as needed when using -lm (no need to
2185 specify -lmvec explicitly for not static builds).
2186 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
2188 * A new fmemopen implementation has been added with the goal of POSIX
2189 compliance. The new implementation fixes the following long-standing
2190 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
2191 old implementation is still present for use be by existing binaries.
2193 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
2194 releases. It has been fixed to match 2.19 and older, but binaries built
2195 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
2197 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
2198 Contributed by Roland McGrath (Google).
2200 * The header <regexp.h> is deprecated, and will be removed in a future
2201 release. Use of this header will trigger a deprecation warning.
2202 Application developers should update their code to use <regex.h> instead.
2204 This header was formerly part of SUS, but was deprecated in 1994 and
2205 removed from the standard in 2001. Also, the glibc implementation
2206 leaks memory. See BZ#18681 for more details.
2210 * The following bugs are resolved with this release:
2212 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
2213 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
2214 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
2215 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
2216 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
2217 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
2218 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
2219 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
2220 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
2221 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
2224 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
2225 too little memory for the to-be-scanned arguments and overflow the
2226 allocated buffer. The implementation now correctly computes the required
2227 buffer size when using malloc, and switches to malloc from alloca as
2230 * A new semaphore algorithm has been implemented in generic C code for all
2231 machines. Previous custom assembly implementations of semaphore were
2232 difficult to reason about or ensure that they were safe. The new version
2233 of semaphore supports machines with 64-bit or 32-bit atomic operations.
2234 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
2235 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
2237 * Port to Altera Nios II has been contributed by Mentor Graphics.
2239 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
2240 implementations for powerpc64/powerpc64le.
2241 Implemented by Adhemerval Zanella (IBM).
2243 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
2244 and powerpc64le. This may improve lock scaling of existing programs on
2245 HTM capable systems. The lock elision code is only enabled with
2246 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
2247 powerpc will issue a transaction abort on every syscall to avoid side
2248 effects being visible outside transactions.
2250 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
2251 AArch64. Contributed by ARM Ltd.
2253 * i386 memcpy functions optimized with SSE2 unaligned load/store.
2255 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
2256 under certain input conditions resulting in the execution of a shell for
2257 command substitution when the application did not request it. The
2258 implementation now checks WRDE_NOCMD immediately before executing the
2259 shell and returns the error WRDE_CMDSUB as expected.
2261 * CVE-2012-3406 printf-style functions could run into a stack overflow when
2262 processing format strings with a large number of format specifiers.
2264 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
2265 infinite loop if the DNS response contained a PTR record of an unexpected
2268 * The minimum GCC version that can be used to build this version of the GNU
2269 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
2270 still be used to compile programs using the GNU C Library.
2272 * The GNU C Library is now built with -Werror by default. This can be
2273 disabled by configuring with --disable-werror.
2275 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
2277 * The obsolete sigvec function has been removed. This was the original
2278 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
2279 programs have been using instead for about 25 years. Of course, ABI
2280 compatibility for old binaries using sigvec remains intact.
2282 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
2283 with newer versions of bison.
2285 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
2286 The original MIPS o32 hard-float ABI requires an FPU where double-precision
2287 registers overlay two consecutive single-precision registers. MIPS32R2
2288 introduced a new FPU mode (FR=1) where double-precision registers extend the
2289 corresponding single-precision registers which is incompatible with the
2290 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
2291 require the use of FR=1 making a transition necessary. New o32 ABI
2292 extensions enable users to migrate over time from the original o32 ABI
2293 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
2294 tracks the ABI of any loaded object and verifies that new objects are
2295 compatible. Mode transitions will also be requested as required and
2296 unsupportable objects will be rejected. The ABI checks include both soft and
2297 hard float ABIs for o32, n32 and n64.
2299 GCC 5 with GNU binutils 2.25 onwards:
2300 It is strongly recommended that all o32 system libraries are built using the
2301 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
2302 with the original and all new o32 ABI extensions. Configure a MIPS GCC
2303 compiler using --with-fp-32=xx to set this by default.
2307 * The following bugs are resolved with this release:
2309 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
2310 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
2311 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
2312 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
2313 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
2314 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
2315 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
2316 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
2317 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
2318 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
2319 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
2320 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
2321 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
2322 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
2323 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
2325 * Reverted change of ABI data structures for s390 and s390x:
2326 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
2327 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
2328 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
2329 are preserved pointing straight to the same implementation as the old ones.
2330 Given that, new callers will simply provide a too-big buffer to these
2331 functions. Any applications/libraries out there that embed jmp_buf or
2332 ucontext_t in an ABI-relevant data structure that have already been rebuilt
2333 against 2.19 headers will have to rebuilt again. This is necessary in any
2334 case to revert the breakage in their ABI caused by the glibc change.
2336 * Support for file description locks is added to systems running the
2337 Linux kernel. The standard file locking interfaces are extended to
2338 operate on file descriptions, not file descriptors, via the use of
2339 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
2340 are associated with an open file instead of a process.
2342 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
2344 * The minimum Linux kernel version that this version of the GNU C Library
2345 can be used with is 2.6.32.
2347 * Running the testsuite no longer terminates as soon as a test fails.
2348 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
2349 with PASS or FAIL lines for individual tests. A summary of the results is
2350 printed, including a list of failing lists, and "make check" exits with
2351 error status if there were any unexpected failures. "make check
2352 stop-on-test-failure=y" may be used to keep the old behavior.
2354 * The am33 port, which had not worked for several years, has been removed
2357 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
2358 supported; they now act the same as _DEFAULT_SOURCE (but generate a
2359 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
2360 conflicted with POSIX (support for which was removed in 2.19), the
2361 interfaces those macros enabled remain available when compiling with
2362 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
2363 test macros defined.
2365 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
2367 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
2368 This may improve lock scaling of existing programs on TX capable systems.
2369 The lock elision code is only built with --enable-lock-elision=yes and
2370 then requires a GCC version supporting the TX builtins. With lock elision
2371 default mutexes are elided via __builtin_tbegin, if the cpu supports
2372 transactions. By default lock elision is not enabled and the elision code
2375 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
2376 copy the path argument. This allowed programs to cause posix_spawn to
2377 deference a dangling pointer, or use an unexpected pathname argument if
2378 the string was modified after the posix_spawn_file_actions_addopen
2381 * All supported architectures now use the main glibc sysdeps directory
2382 instead of some being in a separate "ports" directory (which was
2383 distributed separately before glibc 2.17).
2385 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
2386 On configurations that support it (all Linux configurations), it's now
2387 used regardless of the --enable-add-ons switch to configure. It is no
2388 longer possible to build such configurations without pthreads support.
2390 * Locale names, including those obtained from environment variables (LANG
2391 and the LC_* variables), are more tightly checked for proper syntax.
2392 setlocale will now fail (with EINVAL) for locale names that are overly
2393 long, contain slashes without starting with a slash, or contain ".." path
2394 components. (CVE-2014-0475) Previously, some valid locale names were
2395 silently replaced with the "C" locale when running in AT_SECURE mode
2396 (e.g., in a SUID program). This is no longer necessary because of the
2399 * On x86-64, the dynamic linker's lazy-binding support is now compatible
2400 with application code using Intel MPX instructions. (With all previous
2401 versions, the MPX register state could be clobbered when making calls
2402 into or out of a shared library.) Note that while the new dynamic
2403 linker is compatible with all known x86 hardware whether or not it
2404 supports Intel MPX, some x86 instruction-set emulators might fail to
2405 handle the new instruction encodings. This is known to affect Valgrind
2406 versions up through 3.9 (but will be fixed in the forthcoming 3.10
2407 release), and might affect other tools that do instruction emulation.
2409 * Support for loadable gconv transliteration modules has been removed.
2410 The support for transliteration modules has been non-functional for
2411 over a decade, and the removal is prompted by security defects. The
2412 normal gconv conversion modules are still supported. Transliteration
2413 with //TRANSLIT is still possible, and the //IGNORE specifier
2414 continues to be supported. (CVE-2014-5119)
2416 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
2417 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
2418 resulting a denial-of-service security vulnerability in applications which
2419 use functions related to iconv. (CVE-2014-6040)
2423 * The following bugs are resolved with this release:
2425 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
2426 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
2427 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
2428 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
2429 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
2430 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
2431 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
2432 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
2433 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
2434 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
2435 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
2436 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
2437 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
2438 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
2439 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
2440 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
2441 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
2442 16431, 16453, 16474, 16506, 16510, 16529
2444 * Slovenian translations for glibc messages have been contributed by the
2445 Translation Project's Slovenian team of translators.
2447 * The public headers no longer use __unused nor __block. This change is to
2448 support compiling programs that are derived from BSD sources and use
2449 __unused internally, and to support compiling with Clang's -fblock
2450 extension which uses __block.
2452 * CVE-2012-4412 The strcoll implementation caches indices and rules for
2453 large collation sequences to optimize multiple passes. This cache
2454 computation may overflow for large collation sequences and may cause a
2455 stack or buffer overflow. This is now fixed to use a slower algorithm
2456 which does not use a cache if there is an integer overflow.
2458 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
2459 rules for large collation sequences to optimize multiple passes and falls
2460 back to alloca if malloc fails, resulting in a possible stack overflow.
2461 The implementation now falls back to an uncached collation sequence lookup
2464 * CVE-2013-4788 The pointer guard used for pointer mangling was not
2465 initialized for static applications resulting in the security feature
2466 being disabled. The pointer guard is now correctly initialized to a
2467 random value for static applications. Existing static applications need
2468 to be recompiled to take advantage of the fix (bug 15754).
2470 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
2471 to the d_name member of struct dirent, or omit the terminating NUL
2472 character. (Bugzilla #14699).
2474 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
2475 aligned_alloc functions could allocate too few bytes or corrupt the
2476 heap when passed very large allocation size values (Bugzilla #15855,
2479 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
2480 for AF_INET6 has been fixed (Bugzilla #16072).
2482 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
2483 pap_CW, quz_PE, the_NP.
2485 * Substantially revised locales: gd_GB, ht_HT
2487 * The LC_ADDRESS field was updated to support country_car for almost all
2490 * ISO 1427 definitions were updated.
2492 * ISO 3166 definitions were updated.
2494 * The localedef utility now supports --big-endian and --little-endian
2495 command-line options to generate locales for a different system from that
2496 for which the C library was built.
2498 * Binary locale files now only depend on the endianness of the system for
2499 which they are generated and not on other properties of that system. As a
2500 consequence, binary files generated with new localedef may be incompatible
2501 with old versions of the GNU C Library, and binary files generated with
2502 old localedef may be incompatible with this version of the GNU C Library,
2503 in the following circumstances:
2505 + Locale files may be incompatible on m68k systems.
2507 + Locale archive files (but not separate files for individual locales) may
2508 be incompatible on systems where plain "char" is signed.
2510 * The configure option --disable-versioning has been removed. Builds with
2511 --disable-versioning had not worked for several years.
2513 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
2514 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
2516 * SystemTap probes for malloc have been introduced.
2518 * SystemTap probes for slow multiple precision fallback paths of
2519 transcendental functions have been introduced.
2521 * Support for powerpc64le has been added.
2523 * The soft-float powerpc port now supports e500 processors.
2525 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
2527 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
2528 set of header declarations that are enabled by default, even when other
2529 feature test macros or compiler options such as -std=c99 would otherwise
2530 disable some of those declarations.
2532 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
2533 conflict with POSIX. The libbsd-compat library (which was a dummy library
2534 that did nothing) has also been removed.
2536 * Preliminary documentation about Multi-Thread, Async-Signal and
2537 Async-Cancel Safety has been added.
2539 * Change of ABI data structures for s390 and s390x:
2540 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
2541 allow for future hardware extensions. All library functions that accept or
2542 return these structures were versioned in order to provide backwards
2543 compatibility with existing code. However, not all cases can be handled
2544 with interface versioning. If an application embeds either structure into
2545 another structure and that structure is passed to another compilation unit
2546 which expects the newer larger-sized object then any access to the new
2547 fields will result in undefined behaviour. Similarly any access to fields
2548 that were moved by the enlarging of the structures will cause undefined
2549 behaviour. To fix the undefined behaviour all objects that are part of the
2550 final in-memory image must agree on the size of structures, and this may
2551 require recompilation.
2555 * The following bugs are resolved with this release:
2557 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
2558 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
2559 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
2560 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
2561 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
2562 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
2563 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
2564 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
2565 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
2566 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
2567 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
2568 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
2569 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
2572 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
2573 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
2574 Distributions can re-enable building and using pt_chown via the new configure
2575 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
2576 considerable security risks and should only be used if the distribution
2577 understands and accepts the risks.
2579 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
2582 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
2583 fixed (Bugzilla #15330).
2585 * Add support for calling C++11 thread_local object destructors on thread
2586 and program exit. This needs compiler support for offloading C++11
2587 destructor calls to glibc.
2589 * Improved worst case performance of libm functions with double inputs and
2592 * Support for priority inherited mutexes in pthread condition variables on
2593 non-x86 architectures.
2595 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
2597 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
2599 * Optimized string functions for ARM. Implemented by Will Newton and
2602 * Optimized libm functions for SPARC. Implemented by David S. Miller.
2604 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
2607 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
2608 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
2610 * Added a benchmark framework to track performance of functions in glibc.
2612 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
2613 It is based on draft TS 18661 and currently enabled as a GNU extension.
2615 * On Linux, the clock function now uses the clock_gettime system call
2616 for improved precision, rather than old times system call.
2618 * Added support for version-3 tz format files. This is needed when using
2619 the tz database release 2013e or later, and affects a few unusual cases --
2620 currently only TZ='America/Godthab' for time stamps after 2037.
2622 * Added new API functions pthread_getattr_default_np and
2623 pthread_setattr_default_np to get and set the default pthread
2624 attributes of a process.
2626 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
2627 This may improve lock scaling of existing programs on TSX capable systems.
2628 When the --enable-lock-elision=yes parameter is specified at configure
2629 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
2632 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
2633 availability). Implemented by Ryan S. Arnold.
2635 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
2639 * The following bugs are resolved with this release:
2641 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
2642 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
2643 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
2644 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
2645 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
2646 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
2647 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
2648 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
2649 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
2650 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
2651 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
2652 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
2653 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
2654 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
2655 14879, 14889, 14893, 14898, 14914.
2657 * Optimization of memcpy for MIPS.
2659 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
2660 EMFILE has been fixed (Bugzilla #14889).
2662 * The add-on ports collection is now distributed in the "ports" subdirectory
2663 of the main GNU C Library distribution, rather than separately.
2665 * Port to ARM AArch64 contributed by Linaro.
2667 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
2668 Optimized versions of memcpy, memset, and memcmp added for System z10 and
2670 Implemented by Andreas Krebbel.
2672 * The new function secure_getenv allows secure access to the environment,
2673 returning NULL if running in a SUID/SGID process. This function replaces
2674 the internal function __secure_getenv.
2676 * SystemTap static probes have been added into the dynamic linker.
2677 Implemented by Gary Benson.
2679 * Optimizations of string functions strstr, strcasestr and memmem.
2680 Implemented by Maxim Kuvyrkov.
2682 * The minimum Linux kernel version that this version of the GNU C Library
2683 can be used with is 2.6.16.
2685 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
2686 powerpc POWER7. Implemented by Will Schmidt.
2688 * New configure option --disable-nscd builds the C library such that it
2689 never attempts to contact the Name Service Caching Daemon (nscd).
2690 New configure option --disable-build-nscd avoids building nscd itself;
2691 this is the default if --disable-nscd is used.
2693 * Improved support for cross-compilation, including cross-testing and
2694 bootstrap builds without a previously built glibc.
2696 * Several testsuite tests are now able to test multiple IFUNC variants of an
2697 interface, rather than just testing the one that would be chooen by
2700 * New configure options --with-bugurl and --with-pkgversion, for
2701 distributors to use to embed their bug-reporting and package version
2702 information in --help and --version output.
2704 * The ttyname and ttyname_r functions on Linux now fall back to searching for
2705 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
2706 allows creation of chroots without the procfs mounted on /proc.
2708 * The `crypt' function now fails if passed salt bytes that violate the
2709 specification for those values. On Linux, the `crypt' function will
2710 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
2711 enabled, and fail on encrypted strings using the MD5 or DES algorithm
2712 when the mode is enabled.
2714 * The `clock_*' suite of functions (declared in <time.h>) is now available
2715 directly in the main C library. Previously it was necessary to link with
2716 -lrt to use these functions. This change has the effect that a
2717 single-threaded program that uses a function such as `clock_gettime' (and
2718 is not linked with -lrt) will no longer implicitly load the pthreads
2719 library at runtime and so will not suffer the overheads associated with
2720 multi-thread support in other code such as the C++ runtime library.
2722 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
2727 * The following bugs are resolved with this release:
2729 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
2730 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
2731 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
2732 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
2733 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
2734 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
2735 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
2736 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
2737 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
2738 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
2739 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
2740 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
2741 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
2742 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
2743 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
2744 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
2745 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
2746 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
2747 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
2748 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
2749 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
2750 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
2753 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
2754 configuring glibc with:
2755 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
2756 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
2757 Implemented by H.J. Lu.
2761 + define static_assert
2763 + do not declare gets
2765 + declare at_quick_exit and quick_exit also for ISO C11
2767 + aligned_alloc. NB: The code is deliberately allows the size parameter
2768 to not be a multiple of the alignment. This is a moronic requirement
2769 in the standard but it is only a requirement on the caller, not the
2772 + timespec_get added
2774 + uchar.h support added
2776 + CMPLX, CMPLXF, CMPLXL added
2778 Implemented by Ulrich Drepper.
2780 * Support for the IA-64 has been moved to ports.
2782 * Remove support for anything but ELF binary format
2784 * Checking versions of poll, ppoll added.
2785 Implemented by Ulrich Drepper.
2787 * More generic and 64-bit performance optimizations to math functions.
2788 Implemented by Ulrich Drepper.
2790 * New configure option --enable-obsolete-rpc makes the deprecated RPC
2791 headers and functions available at compile time as they were before
2792 version 2.14. This option will be removed at some time in the future
2793 after the TI-RPC library becomes fully sufficient for the needs of
2794 existing applications.
2796 * Compatibility code for Linux kernel versions before 2.4 has been removed.
2797 Note that glibc is not expected to work with any Linux kernel version
2800 * New header <sys/auxv.h> and function getauxval allowing easy access to
2801 the AT_* key-value pairs passed from the Linux kernel. The header also
2802 defines the HWCAP_* bits associated with the AT_HWCAP key.
2804 * New locales: mag_IN
2806 * New configure option --enable-systemtap builds SystemTap static probes
2807 into libc for setjmp and longjmp and into libpthread for various operations.
2808 So far the setjmp/longjmp probes and some of the libpthread probes are
2809 provided only for i*86 and x86_64.
2810 Implemented by Roland McGrath and Rayson Ho.
2812 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
2814 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
2817 * More optimized functions for SPARC. Implemented by David S. Miller.
2819 * Improved support for cross-compilation, especially bootstrap builds
2820 without a previously built glibc.
2822 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
2823 Chris Metcalf from Tilera.
2825 * Support for the old ARM ABI has been removed from ports. Only the EABI is
2826 now supported for ARM processors.
2828 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
2829 as the name of the dynamic linker, to distinguish it from the
2830 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
2832 * Support for CRIS has been removed from ports.
2834 * A new class of installed header has been documented for low-level
2835 platform-specific functionality. PowerPC added the first instance with a
2836 function to provide time base register access. Contributed by Tulio
2837 Magno Quites Machado Filho.
2839 * ix86 configurations now install header files that are consistent with
2840 what x86-64 configurations install. These same header files can be used
2841 for -m32, -m64, or -mx32 builds.
2842 Contributed by H.J. Lu.
2844 * Math library bug fixes. A thorough audit of all open math library bugs was
2845 conducted by Joseph Myers. Significant progress was made on many math
2846 library bugs resulting in more accurate exceptions and function results.
2847 Many thanks to all those that contributed including Andreas Jaeger for his
2848 patch review and work on the x87 trigonometric instruction issues.
2850 * Timezone data is no longer installed. Timezone-related binaries and scripts
2851 will continue to be installed. Users should obtain their timezone data from
2852 their distribution provider or from the tzdata package at
2853 <ftp://munnari.oz.au/pub/>.
2857 * The following bugs are resolved with this release:
2859 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
2860 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
2861 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
2862 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
2863 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
2864 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
2865 13484, 13506, 13515, 13523, 13524, 13538, 13540
2867 * New program pldd to list loaded object of a process
2868 Implemented by Ulrich Drepper.
2870 * Add nss_db support back to glibc. No more dependency on Berkeley db
2871 and support for initgroups lookups.
2872 Implemented by Ulrich Drepper.
2874 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
2875 Contributed by HJ Lu.
2877 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
2878 Contributed by HJ Lu.
2880 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
2881 on x86-32 and x86-64.
2882 Contributed by Liubov Dmitrieva.
2884 * Optimized strchr and strrchr for SSE on x86-32.
2885 Contributed by Liubov Dmitrieva.
2887 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
2888 for x86-64 and x86-32.
2889 Contributed by Liubov Dmitrieva.
2891 * New interfaces: scandirat, scandirat64
2892 Implemented by Ulrich Drepper.
2894 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
2895 Implemented by Ulrich Drepper.
2897 * nscd now also caches the netgroup database.
2898 Implemented by Ulrich Drepper.
2900 * Integrate libm with gcc's -ffinite-math-only option.
2901 Implemented by Ulrich Drepper.
2903 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
2904 to math functions. Implemented by Ulrich Drepper.
2906 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
2907 Implemented by Ulrich Drepper.
2909 * New Linux interfaces: process_vm_readv, process_vm_writev
2911 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
2912 Implemented by Ulrich Drepper.
2914 * Optimized nearbyint and strcasecmp for PPC.
2915 Implemented by Adhemerval Zanella.
2917 * New locales: bho_IN, unm_US, es_CU, ta_LK
2921 * The following bugs are resolved with this release:
2923 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
2924 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
2925 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
2926 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
2927 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
2928 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
2929 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
2930 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
2931 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
2932 12795, 12811, 12813, 12814, 12841
2934 * The RPC implementation in libc is obsoleted. Old programs keep working
2935 but new programs cannot be linked with the routines in libc anymore.
2936 Programs in need of RPC functionality must be linked against TI-RPC.
2937 The TI-RPC implementation is IPv6 enabled and there are other benefits.
2939 Visible changes of this change include (obviously) the inability to link
2940 programs using RPC functions without referencing the TI-RPC library and the
2941 removal of the RPC headers from the glibc headers.
2942 Implemented by Ulrich Drepper.
2944 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
2945 syncfs, setns, sendmmsg
2947 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
2948 yue_HK, lij_IT, mhr_RU
2950 * New encodings: CP770, CP771, CP772, CP773, CP774
2952 * New program sotruss to trace calls through PLTs
2953 Implemented by Ulrich Drepper.
2955 * The malloc hook implementation is marked deprecated and will be removed
2956 from the default implementation in the next version. The design never
2957 worked ever since the introduction of threads. Even programs which do
2958 not create threads themselves can use multiple threads created internally.
2962 * The following bugs are resolved with this release:
2964 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
2965 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
2966 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
2967 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
2970 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
2972 * POWER7 optimizations: memset, memcmp, strncmp
2974 * New optimized string functions for x86-64: strnlen (SSE2),
2975 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
2976 Implemented by Ulrich Drepper.
2980 * The following bugs are resolved with this release:
2982 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
2983 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
2984 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
2985 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
2986 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
2987 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
2988 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
2989 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
2991 * New interfaces: pthread_getname_np, pthread_setname_np
2993 * New Linux interface: recvmmsg
2995 * STT_GNU_IFUNC implemented for Sparc by David Miller.
2997 * The dynamic linker now recognizes supported ABI versions from the
2998 EI_ABIVERSION field in the ELF header.
2999 Implemented by Ulrich Drepper.
3001 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
3002 will not be used to fill in password fields in the passwd.byname replies.
3003 Instead it is used to synthesize the shadow.byname table, should it be
3004 missing. This is a useful mode in some installations involving Solaris.
3005 Implemented by Ulrich Drepper.
3007 * New locales: kok_IN, sq_MK, cv_RU
3011 * The following bugs are resolved with this release:
3013 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
3014 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
3015 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
3016 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
3017 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
3018 10789, 10817, 10823, 10840, 10847
3020 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
3022 Implemented by Ulrich Drepper.
3024 * Checking version of longjmp added that fails if an uninitialized stack
3025 frame would be created. Implemented by Ulrich Drepper.
3027 * STT_GNU_IFUNC is now supported in static executables.
3028 Implemented by H.J. Lu.
3030 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
3032 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
3033 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
3034 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
3035 Contributed by H.J. Lu.
3037 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
3038 Implemented by Ulrich Drepper.
3040 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
3042 Contributed by H.J. Lu.
3044 * Support for fma instruction in AVX on x86-64.
3045 Implemented by H.J. Lu and Ulrich Drepper.
3047 * AVX support in x86-64 auditing support in ld.so.
3048 Implemented by H.J. Lu.
3050 * STB_GNU_UNIQUE support added.
3051 Implemented by Ulrich Drepper.
3053 * Implement second fallback mode for optimized DNS lookup for even more
3054 broken environments. If two requests from the same port are not
3055 handled correctly close the socket and open a new one before sending
3056 the second request. The 'single-request-reopen' option in /etc/resolv.conf
3057 can be used to select this mode right away, instead of rediscovering the
3058 necessity is every process again.
3059 Implemented by Ulrich Drepper.
3061 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
3062 Implemented by Adam Tkac.
3064 * Optimized iconv conversions for S390x.
3065 Implemented by Andreas Krebbel.
3067 * Using condvars with PI mutexes is now more efficient due to kernel
3068 support for requeueing to PI futexes. NPTL support added for x86-64.
3069 Implemented by Ulrich Drepper.
3071 * New locales: ps_AF, my_MM
3075 * The following bugs are resolved with this release:
3077 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
3078 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
3079 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
3080 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
3081 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
3083 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
3084 Implemented by Ulrich Drepper.
3086 * New Linux interfaces: accept4, fallocate, fallocate64.
3087 Implemented by Ulrich Drepper.
3089 * Correct declarations of string function when used in C++ code. This
3090 could lead to compile errors for invalid C++ code.
3092 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
3095 * New POSIX 2008 interface: psiginfo
3096 Implemented by Ulrich Drepper.
3098 * New ISO C++1x interfaces: quick_exit, at_quick_exit
3099 Implemented by Ulrich Drepper.
3101 * Support for selecting between multiple function definitions at runtime
3102 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
3104 * The libcrypt library can now use the hash function implementations in
3105 NSS. Implemented by Ulrich Drepper.
3107 * The malloc implementation can be compiled to be less memory efficient
3108 but higher performing in multi-threaded programs.
3109 Implemented by Ulrich Drepper.
3111 * New locales: nan_TW@latin, ks_IN
3113 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
3114 Implemented by Ulrich Drepper.
3116 * Extended printf hook support. It is possible to use user-defined types
3117 and extend existing format specifiers.
3118 Implemented by Ulrich Drepper.
3120 * Handling for group shadow files has been added.
3121 Implemented by Ulrich Drepper.
3123 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
3124 servers (the case, e.g., for some people using the built-in DNS
3125 server in ADSL modems/routers). There is a once-per-process timeout
3126 in case of a broken server. To avoid it, users can run nscd or put
3127 'options single-request' in /etc/resolv.conf.
3128 Implemented by Ulrich Drepper.
3132 * The following bugs are resolved with this release:
3134 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
3135 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
3136 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
3137 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
3138 6968, 6974, 6980, 6995, 7008, 7009, 7029
3140 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
3141 up at the same time. Implemented by Ulrich Drepper.
3143 * TLS descriptors for LD and GD on x86 and x86-64.
3144 Implemented by Alexandre Oliva.
3146 * getaddrinfo now handles DCCP and UDPlite.
3147 Implemented by Ulrich Drepper.
3149 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
3150 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
3151 Implemented by Ulrich Drepper.
3153 * New implementation of memmem, strstr, and strcasestr which is O(n).
3154 Implemented by Eric Blake.
3156 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
3158 * Implement "e" option for popen to open file descriptor with the
3159 close-on-exec flag set. Implemented by Ulrich Drepper.
3161 * Implement "b" mode for fmemopen. In this mode writes writes don't
3162 implicitly add a NUL byte and seeks from the end of the buffer really
3163 use the buffer end, not the string length as the basis.
3164 Implemented by Ulrich Drepper.
3166 * Many functions, exported and internal, now atomically set the close-on-exec
3167 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
3169 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
3171 Implemented by Pravin Satpute.
3173 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
3177 * The following bugs are resolved with this release:
3179 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
3180 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
3181 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
3182 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
3183 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
3184 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
3185 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
3187 * New locales: bo_CN, bo_IN, shs_CA.
3189 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
3191 * Sorting rules for some Indian languages (Devanagari and Gujarati).
3192 Implemented by Pravin Satpute.
3194 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
3196 * nscd caches now all timeouts for DNS entries
3197 Implemented by Ulrich Drepper.
3199 * nscd is more efficient and wakes up less often.
3200 Implemented by Ulrich Drepper.
3202 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
3203 vdprintf, and obstack_vprintf.
3204 Implemented by Jakub Jelinek.
3206 * Faster memset for x86-64.
3207 Implemented by Harsha Jagasia and H.J. Lu.
3209 * Faster memcpy on x86.
3210 Implemented by Ulrich Drepper.
3212 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
3213 Implemented by Ulrich Drepper.
3215 * Faster sqrt and sqrtf implemention for some PPC variants.
3216 Implemented by Steven Munroe.
3220 * The following bugs are resolved with this release:
3222 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
3223 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
3224 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
3225 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
3226 5071, 5103, 5104, 5112, 5113, 5184, 5186
3228 * More checking functions: fread, fread_unlocked, open*, mq_open.
3229 Implemented by Jakub Jelinek and Ulrich Drepper.
3231 * Extend fortification to C++. Implemented by Jakub Jelinek.
3233 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
3234 by not recognizing 'a' as a modifier when those specs are requested.
3235 Implemented by Jakub Jelinek.
3237 * PPC optimizations to math and string functions.
3238 Implemented by Steven Munroe.
3240 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
3241 options to be passed. Implemented by Ulrich Drepper.
3243 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
3245 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
3246 Implemented by Ulrich Drepper.
3248 * Handle private futexes in the NPTL implementation.
3249 Implemented by Jakub Jelinek and Ulrich Drepper.
3251 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
3252 Implemented by Roland McGrath and Ulrich Drepper.
3254 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
3256 * SHA-256 and SHA-512 based password encryption.
3257 Implemented by Ulrich Drepper.
3259 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
3260 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
3263 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
3264 Implemented by Ulrich Drepper.
3268 * The following bugs are resolved with this release:
3270 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
3271 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
3272 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
3273 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
3274 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
3275 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
3276 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
3279 * New Linux interfaces: epoll_pwait, sched_getcpu.
3281 * New generic interfaces: strerror_l.
3283 * nscd can now cache the services database. Implemented by Ulrich Drepper.
3287 * The following bugs are resolved with this release:
3289 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
3290 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
3291 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
3292 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
3293 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
3294 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
3295 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
3296 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
3297 3225, 3251, 3252, 3253, 3273
3299 * For Linux, the sorting of addresses returned by getaddrinfo now also
3300 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
3301 Implemented by Ulrich Drepper.
3303 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
3304 Implemented by Ulrich Drepper.
3306 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
3308 * New iconv module for MIK. Contributed by Alexander Shopov.
3310 * For sites with broken group and/or passwd database, the auto-propagate
3311 option of nscd can prevent creating ID lookup entries from the results
3312 of a name lookup and vice versa. This usually is no problem but some
3313 site might have problems with the default behavior.
3314 Implemented by Ulrich Drepper.
3316 * Iterating over entire database in NIS can be slow. With the
3317 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
3318 to trade time for memory. The entire database will be read at once.
3319 Implemented by Ulrich Drepper.
3321 * The interfaces introduced in RFC 3542 have been implemented by
3324 * Support for the new ELF hash table format was added by Ulrich Drepper.
3326 * Support for priority inheritance mutexes added by Jakub Jelinek and
3329 * Support for priority protected mutexes added by Jakub Jelinek.
3331 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
3332 or_IN, csb_PL, fy_NL, sr_ME.
3336 * More overflow detection functions.
3338 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
3339 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
3341 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
3342 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
3343 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
3344 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
3345 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
3346 by Masahide Washizawa.
3348 * It is now possible to install audit libraries for the dynamic linker using
3349 LD_AUDIT. Implemented by Ulrich Drepper.
3351 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
3352 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
3353 For a libc and libpthread that works well on Linux 2.4 kernels, we
3354 recommend using the stable 2.3 branch.
3356 * The new function open_wmemstream acts like open_memstream,
3357 but uses a wchar_t wide character buffer.
3359 * The new function ppoll is an improved version of poll, similar to pselect.
3361 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
3362 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
3363 renameat, unlinkat, linkat, symlinkat, readlinkat.
3365 * New Linux kernel system calls: unshare,
3366 inotify_init, inotify_add_watch, inotify_rm_watch.
3368 * The euidaccess function is now also known by the alias eaccess,
3369 for compatibility with some other systems.
3371 * Timezone data updated to 2006b version.
3375 * The following bugs are resolved with this release:
3377 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
3378 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
3379 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
3380 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
3381 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
3382 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
3384 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3386 * As of this release, GCC 4 can be used to compile the C Library.
3388 * Timezone data updated to 2005m version.
3392 * The following bugs are resolved with this release:
3394 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
3395 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
3396 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
3397 777, 787, 821, 822, 823, 825
3399 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3403 * Support for RFC 3678. Real implementations exist only for Linux so far.
3404 Implemented by Ulrich Drepper.
3406 * nscd can now cache entries persistently. Expiring entries are reloaded.
3407 For speedups the cache can be shared in memory with client processes.
3408 Implemented by Ulrich Drepper.
3410 * nscd can now perform SELinux checks.
3411 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
3413 * getaddrinfo queries are now cached. Canonical name lookup is performed
3415 Implemented by Ulrich Drepper.
3417 * The nothrow function attribute is used when headers are used by gcc when
3418 compiling C code. This can avoid significant amounts of exception
3421 * The malloc functions perform more error checking and are stricter when
3422 it comes to reacting on errors. The default action is to terminate
3423 the process after showing an error message. Implemented by Ulrich Drepper.
3425 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
3426 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
3428 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
3429 namespaces using the new function dlmopen(). This feature is of course,
3430 like most other dynamic loading functionality, not available in statically
3431 linked applications. Implemented by Ulrich Drepper.
3433 * Low-overhead boundary checking variants of string and some stdio functions
3434 were added. These are to be used in conjunction with a gcc patch by
3435 Jakub Jelinek which adds calls to these functions if possible.
3436 Implemented by Jakub Jelinek and Ulrich Drepper.
3438 * Old code for several operating systems and machine architectures that
3439 have not been in working condition in a long time have been removed from
3440 the main source tree maintained by the GNU C Library's maintainers.
3441 These files are now reside in the separate `ports' source module
3442 that is usable as an add-on when building the library.
3446 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
3447 interrogate the dynamic linker, compatible with the Solaris interface.
3449 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
3450 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
3452 * getifaddrs now uses the netlink interface on Linux to get its information.
3453 Implemented by Thorsten Kukuk.
3455 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
3456 Implemented by Ulrich Drepper.
3458 * support for non-executable stacks on x86 has been added. Changes mostly
3461 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
3464 * getaddrinfo now performs destination address selection according to
3469 * Thread-safe interfaces for many functions that access locale data
3470 were added in version 2.3, but these features were omitted from NEWS.
3471 Many functions have variants with an `_l' suffix that take a `locale_t'
3472 object as a parameter rather than consulting the current locale.
3473 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
3474 create and maintain `locale_t' objects. Additionally, the new function
3475 `uselocale' sets "the current locale" (as used by functions not so
3476 parameterized) set for an individual thread. These features were added
3477 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
3479 * The functions getresuid, getresgid, setresuid, and setresgid, which
3480 have long been available on Linux, are now declared in <unistd.h>
3481 and are now also available on the Hurd.
3483 * ELF thread-local storage support (TLS) now works on x86-64.
3485 * The new dynamic string token $LIB is expanded in shared library names.
3486 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
3488 * Aldy Hernandez contributed complete software floating point support for
3489 PowerPC machines with no FPU.
3491 * fexecve is implemented on Linux.
3493 * The `btowc' function should work at least twice as fast due to
3494 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
3496 * With approriate thread add-ons cancelable functions are now implemented
3497 in libc.so as well. No need to call the function in libpthread. This
3498 change allowed to finally disable the incorrect and expensive handling
3499 of weak definition in ld.so.
3501 * Yet more PLT entries in libc.so have been removed. We finally arrived
3502 at the bare minimum. Startup times improved appropriately.
3504 * Support for the new Linux/x86 system call interface was added. The
3505 AT_SYSINFO auxiliary vector entry is recognized and handled.
3509 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
3512 * iconv (the program and the interface) now accepts empty names (excluding
3513 options like //TRANSLIT) to mean "use charset of current locale".
3515 * localedef can now transliterate characters in strings which are not in
3516 the provided charmap. The information from the input locale is used.
3518 * Prelinking support was added for ELF targets. This requires additional
3519 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
3521 * Read-only stdio streams now use mmap to speed up operation by eliminating
3522 copying and buffer underflows. To use add 'm' to the mode string of
3523 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
3525 * The malloc functions were completely rewritten by Wolfram Gloger based
3526 on Doug Lea's malloc-2.7.0.c.
3528 * Isamu Hasegawa contributed a completely new and POSIX-conformant
3529 implementation of regex.
3531 * Bruno Haible upgraded the iconv and locale implementation to support
3534 * Contents of the LC_* and LANG environment variables in the CEN style are
3535 not recognized anymore. It never was used. Change by Ulrich Drepper.
3537 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
3538 thread-local storage (TLS) ABI on some platforms.
3539 Changes by Ulrich Drepper. SH support by Kaz Kojima.
3541 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
3542 EUC-JISX0213, and TSCII.
3544 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
3545 BSD-compatible interface for getting all network interface addresses.
3546 Implementation for IPv4 by Roland McGrath.
3548 * Loading of locale data is faster due to the introduction of a locale
3549 archive. Implemented by Roland McGrath and Ulrich Drepper.
3551 * Startup times are significantly reduced by not using exported functions
3552 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
3555 * Steven Munroe contributed a port to PowerPC64/Linux.
3559 * The Hurd now uses the GNU libio implementation of stdio rather than the
3560 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
3562 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
3563 with the same behavior as the Linux system call of the same name.
3567 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
3568 128-bit long double format.
3570 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
3571 IBM1161, and IBM1162 charsets.
3573 * Andreas Jaeger contributed a port to x86-64/Linux.
3575 * Peter Bruin contributed a port to PowerPC/Hurd.
3577 * libc functions using I/O streams now can handle wide-oriented streams
3580 * optimizations in the dynamic linker. Binaries created by recent binutils
3581 versions start up quicker due to reduced time spent on relocations.
3583 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
3587 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
3588 asinh, atanh, j0 for the 128-bit long double format.
3590 * Bruno Haible updated all the code handling Unicode in some form to
3591 support Unicode 3.1.
3593 * Speed of regex for single-byte locales is back to previous levels.
3594 Patch by Isamu Hasegawa.
3596 * Alpha, SPARC, and IA-64 now also using floating stacks.
3598 * Startup time of internationalized applications greatly improved through
3599 iconv cache. Use iconvconfig to generate the cache file.
3600 Contributed by Ulrich Drepper.
3602 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
3603 severe performance problems. Patch by David Mosberger.
3605 * The Hurd port got a lot more functionality like AIO, various stdio
3606 extensions, etc. Mainly done by Roland McGrath.
3608 * mtrace can now lookup symbols in shared libraries.
3612 * Intel's IA-64 math library is largely integrated. It provides fast and
3613 accurate implementatations for most basic and standard math functions
3614 in float, double, and long double format.
3616 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
3617 and asin for the 96-bit long double format and asin, log, tan for the
3618 128-bit long double format.
3620 * The beginning of a last-bit accurate math library by IBM Haifa were added.
3621 The basic double functions exist today. Contributed by Abraham Ziv
3622 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
3623 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
3625 * An asynchronous name lookup library was added. The interface is designed
3626 after POSIX AIO. The proposal was circulated beforehand to get comments.
3627 No negative ones came in. Implemented by Ulrich Drepper.
3629 * Port to S390/64bit contributed by Martin Schwidefsky
3630 <schwidefsky@de.ibm.com>.
3632 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
3633 of functions for Linux/IA-64.
3635 * The RPC code is now thread safe. Threads can now use the same service
3636 of different services at the same time. Patch by Eric Norum
3637 <eric.norum@usask.ca> with some help by Ulrich Drepper.
3639 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
3640 family of functions for Linux/S390.
3642 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
3643 of functions for Linux/x86.
3645 * Port to Linux/CRIS contributed by Axis Communications.
3649 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
3650 we can now check for namespace violations and missing declarations. The
3651 result is that almost all headers are now Unix-compliant (as defined in
3652 the upcoming XPG6). The negative side is that some programs might need
3653 corrections, too, if they depend on the incorrect form of the headers in
3654 previous versions which defined too many symbols and included too many
3657 * regex now handles multibyte character sets correctly.
3658 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
3660 * iconv (the program) does now conform to the upcoming XPG6 and handles
3661 charmaps. Instead of the charset names the path of charmaps can be
3662 provided and the conversion happens based on this data.
3663 Contributed by Ulrich Drepper.
3665 * The locale program now provides detailed information about the installed
3670 only lists the names of the supported locales
3674 provides details such as country, language, and codeset name.
3675 Contributed by Ulrich Drepper.
3679 * The gencat program now parses the input file according to the charset
3680 selected by the LC_CTYPE category. This is important for stateful
3681 character sets. To make generating catalogs easier there is a way
3682 to overwrite the charset selected by the locale: before the first
3683 message or $ quote line the catalog can contain a line like
3685 $ codeset=ISO-8859-2
3687 to select the charset (ISO-8859-2 in this case).
3689 Implemented by Shinya Hanataka and Ulrich Drepper.
3691 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
3692 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
3693 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
3695 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
3696 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
3698 * The LANGUAGE environment variable is now ignored unless the locale is
3699 changed from the default "C" locale.
3701 * The usual bug fixes.
3705 * Greg McGary added runtime support for bounds checking using gcc's
3706 new -fbounded-pointers option. ix86 target is complete. PowerPC
3709 * Thorsten Kukuk added secure mode support to nscd.
3711 * The Berkeley db libraries have been removed.
3713 Related, the nss_db module is now in a separate package since it
3714 obviously requires a database library being available.
3716 * Wide character I/O streams implemented by Ulrich Drepper.
3718 * Functions from the extended socket API added by Ulrich Drepper.
3720 * Functions feenableexcept and fedisableexcept to control the
3721 behaviour of individual exceptions have been added by Andreas Jaeger.
3723 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
3725 * The resolver code has been updated from bind 8.2.3-T5B which supports
3726 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
3729 This change could in some situations effect backward compatibility. Since
3730 now `_res' is a thread-local instead of a global variable, modifying it
3731 in one thread does not have any effect in other threads.
3733 The resolver library was also extended to allow IPv6 as the transport
3734 protocol for the requests. This work was done by Stig Venaas.
3736 * Compatibility code for K&R C compilers has been removed from the
3737 header files. A ISO C compiler is needed to use the library
3738 (conforming to either C89 or C99 standard).
3740 * Complete rewrite of the localedef program to support multibyte character
3741 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
3742 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
3743 Implemented by Ulrich Drepper.
3745 Bruno Haible significantly improved the generation and use of the data
3746 structures for the wide character tables.
3748 * Plural handling in gettext implemented by Ulrich Drepper.
3750 * The utmp daemon has been removed.
3752 * The port to MIPS-Linux has been finished by Andreas Jaeger.
3754 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
3757 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
3759 * POSIX barriers implemented by Kaz Kylheku.
3761 * POSIX spawn function family implemented by Ulrich Drepper.
3763 * POSIX spinlocks are now available.
3765 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
3767 * the configure option --enable-kernel=X.Y.Z allows to strip out
3768 compatibility for kernel versions before X.Y.Z. This is currently only
3769 implemented for Linux.
3771 * the sockaddr_in6 structure changed. The IPv6 working group added a new
3772 field sin6_scope_id. This means that all programs using IPv6 should be
3773 recompiled. Don't expect binary compatibility with previous glibc
3776 * various conversion modules for IBM character sets contributed by
3779 * IA-64 port by Jes Sorensen and HJ Lu.
3793 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
3795 * New xdr functions are added; some rpc functions are now 64bit clean.
3797 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
3799 * Fixed known incompatibilities with glibc 2.0.
3801 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
3803 * Optimized a number of functions (especially the ELF dynamic loader).
3805 * Update timezone data files.
3807 * lots of charmaps corrections
3809 * some new locale definitions and charmaps
3814 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
3815 conform to POSIX member type requirements. Symbol versions have been
3816 adjusted as needed within the library, and for direct use by applications,
3817 but there is potential for problems if third-party libraries use
3818 struct timeval as part of their interface. This does not present
3819 a problem for X and other "essential" system libraries.
3821 * An additional locale model to support C++ Standard Library locale
3822 model and probably more was implemented by Ulrich Drepper.
3824 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
3827 * Miles Bader provided the `argp' function family to support hierachical
3828 command line argument parsing, layered on top of getopt.
3830 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
3832 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
3835 * scanf recognizes the %a and %A format for scanning floating point numbers.
3837 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
3838 information and interfaces for the available integer types.
3840 * about 130 new math functions were added to implement the ISO C9x math
3843 * the new header <complex.h> contains definitions of the complex math
3844 functions from ISO C 9X.
3846 * the new header <tgmath.h> defines generic macros to use complex or
3847 real valued functions.
3849 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
3851 * Andreas Jaeger provided a test suite for the math library.
3853 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
3855 * Ulrich Drepper added character set conversion functions (iconv).
3857 * Optimized string functions have been added.
3859 * The localedata addon is now part of glibc.
3861 * An implementation of profiling shared libraries was added by Ulrich Drepper.
3863 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
3864 daemon for NSS (nscd).
3866 Missing a better place here are some numbers on improvements. Under
3867 Linux 2.1.125 un-tar-ing the kernel sources takes
3871 using local files 12.19s 6.88s 22.91s
3873 using NIS 13.92s 8.91s 26.34s
3875 using NIS & nscd 10.37s 7.34s 25.30s
3877 using NIS+ 27.57s 30.37s 640.46s
3879 using NIS+ & nscd 10.25s 7.83s 26.51s
3881 using NIS & old nscd [1] 13.83s 8.32s 29.60s
3883 Keep in mind that non-namelookup related operations dominate above times.
3884 It was just a common complain that using NIS+ unpacking the kernel is
3887 [1] The old nscd implementation is not available anymore since it was
3888 distributed with glibc up to version 2.0.98 and thus is now replaced.
3890 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
3892 * Mark Kettenis provided a Hesiod NSS module.
3894 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
3895 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
3897 * rcmd can now handle netgroups (Dick Streefland).
3899 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
3902 * Support for the IPv6 protocol has been added to the socket API, as per the
3903 latest draft standards.
3905 * Support for Linux 2.2 has been added.
3907 * Interface changes relative to the latest 2.0.x release:
3908 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3909 addseverity NEW: Unix98
3910 alphasort64 NEW: LFS
3911 argp_err_exit_status NEW: argp, GNU ext
3912 argp_error NEW: argp, GNU ext
3913 argp_failure NEW: argp, GNU ext
3914 argp_help NEW: argp, GNU ext
3915 argp_parse NEW: argp, GNU ext
3916 argp_program_bug_address NEW: argp, GNU ext
3917 argp_program_version NEW: argp, GNU ext
3918 argp_program_version_hook NEW: argp, GNU ext
3919 argp_state_help NEW: argp, GNU ext
3920 argp_usage NEW: argp, GNU ext
3921 authdes_create NEW: Secure RPC
3922 authdes_getucred NEW: Secure RPC
3923 authdes_pk_create NEW: Secure RPC
3924 backtrace NEW: GNU ext.
3925 backtrace_symbols NEW: GNU ext.
3926 backtrace_symbols_fd NEW: GNU ext.
3928 cacosf NEW: ISO C 9x
3929 cacosh NEW: ISO C 9x
3930 cacoshf NEW: ISO C 9x
3931 cacoshl NEW: ISO C 9x
3932 cacosl NEW: ISO C 9x
3939 casinf NEW: ISO C 9x
3940 casinh NEW: ISO C 9x
3941 casinhf NEW: ISO C 9x
3942 casinhl NEW: ISO C 9x
3943 casinl NEW: ISO C 9x
3945 catanf NEW: ISO C 9x
3946 catanh NEW: ISO C 9x
3947 catanhf NEW: ISO C 9x
3948 catanhl NEW: ISO C 9x
3949 catanl NEW: ISO C 9x
3950 cbc_crypt NEW: Secure RPC
3954 ccoshf NEW: ISO C 9x
3955 ccoshl NEW: ISO C 9x
3961 cimagf NEW: ISO C 9x
3962 cimagl NEW: ISO C 9x
3963 clearerr_locked REMOVED
3964 clntunix_create NEW: sunrpc ext
3966 clog10 NEW: ISO C 9x
3967 clog10f NEW: ISO C 9x
3968 clog10l NEW: ISO C 9x
3978 cprojf NEW: ISO C 9x
3979 cprojl NEW: ISO C 9x
3981 crealf NEW: ISO C 9x
3982 creall NEW: ISO C 9x
3987 csinhf NEW: ISO C 9x
3988 csinhl NEW: ISO C 9x
3991 csqrtf NEW: ISO C 9x
3992 csqrtl NEW: ISO C 9x
3996 ctanhf NEW: ISO C 9x
3997 ctanhl NEW: ISO C 9x
3999 des_setparity NEW: Secure RPC
4000 ecb_crypt NEW: Secure RPC
4001 endutxent NEW: Unix98
4003 exp10f NEW: ISO C 9x
4004 exp10l NEW: ISO C 9x
4008 fattach NEW: STREAMS
4009 fdetach NEW: STREAMS
4013 feclearexcept NEW: ISO C 9x
4014 fegetenv NEW: ISO C 9x
4015 fegetexceptflag NEW: ISO C 9x
4016 fegetround NEW: ISO C 9x
4017 feholdexcept NEW: ISO C 9x
4019 feraiseexcept NEW: ISO C 9x
4020 ferror_locked REMOVED
4021 fesetenv NEW: ISO C 9x
4022 fesetexceptflag NEW: ISO C 9x
4023 fesetround NEW: ISO C 9x
4024 fetestexcept NEW: ISO C 9x
4025 feupdateenv NEW: ISO C 9x
4026 fflush_locked REMOVED
4030 fgets_unlocked NEW: GNU ext.
4031 fileno_locked REMOVED
4043 fputc_locked REMOVED
4044 fputs_unlocked NEW: GNU ext.
4045 fread_unlocked NEW: GNU ext.
4050 fstatvfs NEW: Unix98
4054 ftruncate64 NEW: LFS
4056 fwrite_unlocked NEW: GNU ext.
4057 gai_strerror NEW: IPv6
4061 getchar_locked REMOVED
4063 getdate_err NEW: Unix98
4064 getdate_r NEW: GNU ext.
4066 getnameinfo NEW: IPv6
4067 getnetname NEW: Secure RPC
4068 getpmsg NEW: STREAMS
4069 getpt NEW: Unix98 PTY
4070 getrlimit64 NEW: LFS
4071 getutxent NEW: Unix98
4072 getutxid NEW: Unix98
4073 getutxline NEW: Unix98
4074 glob64 NEW: GNU ext.
4075 globfree64 NEW: GNU ext.
4076 gnu_get_libc_release NEW: GNU ext.
4077 gnu_get_libc_version NEW: GNU ext.
4078 grantpt NEW: Unix98 PTY
4079 host2netname NEW: Secure RPC
4081 iconv_close NEW: iconv
4082 iconv_open NEW: iconv
4083 if_freenameindex NEW: IPv6
4084 if_indextoname NEW: IPv6
4085 if_nameindex NEW: IPv6
4086 if_nametoindex NEW: IPv6
4087 in6addr_any NEW: IPv6
4088 in6addr_loopback NEW: IPv6
4089 inet6_isipv4mapped NEW: IPv6
4090 isastream NEW: STREAMS
4091 iswblank NEW: GNU ext.
4092 key_decryptsession NEW: Secure RPC
4093 key_decryptsession_pk NEW: Secure RPC
4094 key_encryptsession NEW: Secure RPC
4095 key_encryptsession_pk NEW: Secure RPC
4096 key_gendes NEW: Secure RPC
4097 key_get_conv NEW: Secure RPC
4098 key_secretkey_is_set NEW: Secure RPC
4099 key_setnet NEW: Secure RPC
4100 key_setsecret NEW: Secure RPC
4101 llrint NEW: ISO C 9x
4102 llrintf NEW: ISO C 9x
4103 llrintl NEW: ISO C 9x
4104 llround NEW: ISO C 9x
4105 llroundf NEW: ISO C 9x
4106 llroundl NEW: ISO C 9x
4111 lrintf NEW: ISO C 9x
4112 lrintl NEW: ISO C 9x
4113 lround NEW: ISO C 9x
4114 lroundf NEW: ISO C 9x
4115 lroundl NEW: ISO C 9x
4117 makecontext NEW: Unix98
4118 mempcpy NEW: GNU ext.
4121 modify_ldt NEW: kernel
4125 nearbyint NEW: ISO C 9x
4126 nearbyintf NEW: ISO C 9x
4127 nearbyintl NEW: ISO C 9x
4128 netname2host NEW: Secure RPC
4129 netname2user NEW: Secure RPC
4130 nexttoward NEW: ISO C 9x
4131 nexttowardf NEW: ISO C 9x
4132 nexttowardl NEW: ISO C 9x
4136 passwd2des NEW: Secure RPC
4138 pow10f NEW: GNU ext.
4139 pow10l NEW: GNU ext.
4142 printf_size NEW: GNU ext.
4143 printf_size_info NEW: GNU ext.
4144 profil_counter REMOVED
4145 pthread_mutexattr_getkind_np REPLACED
4146 pthread_mutexattr_setkind_np REPLACED
4147 ptsname NEW: Unix98 PTY
4148 ptsname_r NEW: Unix98 PTY
4150 putchar_locked REMOVED
4151 putgrent NEW: GNU ext.
4153 putpmsg NEW: STREAMS
4154 pututxline NEW: Unix98
4158 readdir64_r NEW: LFS
4159 remquo NEW: ISO C 9x
4160 remquof NEW: ISO C 9x
4161 remquol NEW: ISO C 9x
4163 roundf NEW: ISO C 9x
4164 roundl NEW: ISO C 9x
4166 scalbln NEW: ISO C 9x
4167 scalblnf NEW: ISO C 9x
4168 scalblnl NEW: ISO C 9x
4170 sendfile NEW: kernel
4171 setcontext NEW: Unix98
4172 setrlimit64 NEW: LFS
4173 setutxent NEW: Unix98
4175 sigignore NEW: Unix98
4176 sigqueue NEW: POSIX.1b
4177 sigrelse NEW: Unix98
4178 sigset NEW: POSIX.1b
4179 sigtimedwait NEW: POSIX.1b
4180 sigwaitinfo NEW: POSIX.1b
4181 sincos NEW: GNU ext.
4182 sincosf NEW: GNU ext.
4183 sincosl NEW: GNU ext.
4187 strcasestr NEW: GNU ext.
4188 strtoimax NEW: ISO C 9x
4189 strtoumax NEW: ISO C 9x
4190 strverscmp NEW: GNU ext.
4191 svcauthdes_stats NEW: Secure RPC
4192 svcunix_create NEW: sunrpc etx
4193 svcunixfd_create NEW: sunrpc ext
4194 swapcontext NEW: Unix98
4195 tcgetsid NEW: Unix98 PTY
4196 tdestroy NEW: GNU ext.
4197 tgamma NEW: ISO C 9x
4198 tgammaf NEW: ISO C 9x
4199 tgammal NEW: ISO C 9x
4203 truncf NEW: ISO C 9x
4204 truncl NEW: ISO C 9x
4206 unlockpt NEW: Unix98 PTY
4207 updwtmpx NEW: Unix98
4208 user2netname NEW: Secure RPC
4209 utmpxname NEW: Unix98
4210 versionsort NEW: GNU ext.
4211 versionsort64 NEW: GNU ext.
4213 wcscasecmp NEW: GNU ext.
4214 wcsncasecmp NEW: GNU ext.
4215 wcsnlen NEW: GNU ext.
4216 wcstoimax NEW: ISO C 9x
4217 wcstoll NEW: ISO C 9x
4218 wcstoull NEW: ISO C 9x
4219 wcstoumax NEW: ISO C 9x
4221 wordexp NEW: POSIX.2
4222 wordfree NEW: POSIX.2
4223 write_profiling REMOVED
4224 xdecrypt NEW: Secure RPC
4225 xdr_authdes_cred NEW: Secure RPC
4226 xdr_authdes_verf NEW: Secure RPC
4227 xdr_cryptkeyarg NEW: Secure RPC
4228 xdr_cryptkeyarg2 NEW: Secure RPC
4229 xdr_cryptkeyres NEW: Secure RPC
4230 xdr_getcredres NEW: Secure RPC
4231 xdr_key_netstarg NEW: Secure RPC
4232 xdr_key_netstres NEW: Secure RPC
4233 xdr_keybuf NEW: Secure RPC
4234 xdr_keystatus NEW: Secure RPC
4235 xdr_netnamestr NEW: Secure RPC
4236 xdr_sizeof NEW: Secure RPC
4237 xdr_unixcred NEW: sunrpc ext
4238 xencrypt NEW: Secure RPC
4239 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4250 * inet_ntoa is thread-safe
4252 * updwtmp is moved from libutil to libc
4254 * rewrite of cbrt function
4256 * update of timezone data
4270 * add atoll function
4272 * fix complex problems in Berkeley DB code
4274 * fix math functions
4278 * fixed lots of header problems (especially Linux/GNU specific)
4280 * dynamic loader preserves all registers
4282 * Roland McGrath provided support for handling of auxiliary objects in
4283 the ELF dynamic loader.
4285 * support for parallel builds is improved
4289 * GNU extensions are no longer declared by default. To enable them you
4290 must define the macro `_GNU_SOURCE' in your program or compile with
4293 * The library has changed from using GNU ld symbol aliases to using weak
4294 symbols where available. The ELF object file format supports weak
4295 symbols; GNU ld also supports weak symbols in the a.out format. (There
4296 is also now support for other GNU ld extensions in ELF. Use the
4297 `--with-elf' option to configure to indicate you have ELF, and
4298 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
4299 of many files which contained only symbol aliases, reducing the size of
4300 the source and the compiled library; many other files were renamed to
4301 less cryptic names previously occupied by the symbol alias files.
4302 There is a new header file <elf.h> for programs which operate on
4303 files in the ELF format.
4305 * Converted to Autoconf version 2, so `configure' has more options.
4306 Run `configure --help' to see the details.
4308 * The library can now be configured to build profiling, highly-optimized
4309 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
4310 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
4311 `configure' enable building these extra libraries. The shared library is
4312 built by default when using both ELF and GNU ld. When shared libraries
4313 are enabled, the new library `-ldl' is available for arbitrary run-time
4314 loading of shared objects; its interface is defined in <dlfcn.h>. The
4315 new header file <link.h> gives access to the internals of the run-time
4316 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
4317 application of same name on other systems and it provides information
4318 about dynamically linked binaries.
4320 * The C library now provides the run-time support code for profiling
4321 executables compiled with `-pg'. Programs can control the profiling code
4322 through the interface in <sys/gmon.h>. The `gmon.out' files written by
4323 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
4324 the support for this file format was contributed by David Mosberger-Tang.
4326 * The math code has been replaced with a math library based on fdlibm from
4327 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
4328 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
4329 functions. The math functions now reside in a separate library, so
4330 programs using them will need to use `-lm' their linking commands.
4332 * John C. Bowman contributed optimized ix87 assembler inline functions.
4334 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
4335 mechanism similar to that found in Solaris 2. This is now used for the
4336 group, passwd, hosts, networks, services, protocols, rpc, ethers,
4337 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
4338 file controls what services are used for each individual database. This
4339 works by loading shared libraries with names specified in `nsswitch.conf',
4340 so service modules can be changed or added at any time without even
4341 relinking any program. Currently there are the file, db, and NIS based
4342 NSS services available.
4344 * The new functions `strtoq' and `strtouq' parse integer values from
4345 strings, like `strtol' and `strtoul', but they return `long long int' and
4346 `unsigned long long int' values, respectively (64-bit quantities).
4348 * The new functions `strtof' and `strtold' parse floating-point values from
4349 strings, like `strtod', but they return `float' and `long double' values,
4350 respectively (on some machines `double' and `long double' are the same).
4352 * Ulrich Drepper has contributed new implementations of the floating-point
4353 printing and reading code used in the `printf' family of functions and
4354 `strtod', `strtof', and `strtold'. These new functions are perfectly
4355 accurate, and much faster than the old ones.
4357 * The implementation of the POSIX locale model was completely rewritten by
4358 Ulrich Drepper. This includes the new programs `localedef' and `locale'
4359 to compile the POSIX locale definition.
4361 * The former dummy implementations of the strcoll and strxfrm function are
4362 now replaced by fully functional code contributed by Ulrich Drepper. The
4363 collation information comes from the POSIX locale definitions.
4365 * The new header <langinfo.h> defines an interface for accessing
4366 various locale-dependent data (using the locale chosen with `setlocale').
4368 * Ulrich Drepper has contributed a new suite of functions for operation on
4369 wide-character and multibyte-character strings, in <wchar.h>;
4370 and classification and case conversion of wide characters, in <wctype.h>.
4371 These new functions are conforming to the ISO C, Amendement 1 specification.
4373 * There is now a second implementation of the standard I/O library available.
4374 It comes from GNU libg++ as was written by Per Bothner, heavily modified
4375 by Hongjiu Lu and made thread safe by Ulrich Drepper.
4377 * You can now use positional parameter specifications in format strings
4378 for the `printf' and `scanf' families of functions. For example,
4379 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
4380 ``Number 6, Mr Jones''. This is mainly useful when providing different
4381 format strings for different languages, whose grammars may dictate
4382 different orderings of the values being printed. To support this
4383 feature, the interface for `register_printf_handler' has changed; see
4384 the header file <printf.h> for details.
4386 * The `printf' and `scanf' families of functions now understand a new
4387 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
4388 to group numbers as indicated by the locale; for `scanf' and friends, this
4389 says to accept as valid only a number with all the proper grouping
4390 separators in the right places. In the default "C" locale, numbers are
4391 not grouped; but locales for specific countries will define the usual
4392 conventions (i.e. separate thousands with `,' in the US locale).
4394 * The pgrp functions have been regularized, slightly incompatibly but much
4395 less confusingly. The core functions are now `getpgid' and `setpgid',
4396 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
4397 argument) and BSD `setpgrp' (identical to `setpgid') functions are
4398 provided for compatibility. There is no longer an incompatible `getpgrp'
4399 with an argument declared under _BSD_SOURCE; no BSD code uses it.
4401 * The new header file <fts.h> and suite of functions simplify programs that
4402 operate on directory trees. This code comes from 4.4 BSD.
4404 * The resolver code has been updated from the BIND 4.9.5-P1 release.
4405 Parts of the code were heavily modified by Ulrich Drepper to fit in the
4406 NSS scheme used in glibc.
4408 * There is a new malloc debugging hook `__memalign_hook'.
4410 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
4411 `unsigned int' in <sys/types.h>. These are for compatibility only and
4412 their use is discouraged.
4414 * The `-lmcheck' library to enable standard malloc debugging hooks is now
4415 done differently, so that it works even without GNU ld.
4417 * New function `euidaccess' checks allowed access to a file like `access',
4418 but using the effective IDs instead of the real IDs.
4420 * The time zone data files have been updated for the latest and greatest
4421 local time conventions of the countries of the world.
4423 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
4426 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
4427 for formatting floating-point numbers. They are provided only for
4428 compatibility; new programs should use `sprintf' instead. There are
4429 also equivalent function for the `long double' floating-point type and
4430 all functions also exist in a reentrant form.
4432 * The new auxiliary library `-lutil' from 4.4 BSD contains various
4433 functions for maintaining the login-record files (primarily of use to
4434 system programs such as `login'), and convenient functions for
4435 allocating and initializing a pseudo-terminal (pty) device.
4437 * Ulrich Drepper has contributed new support for System V style
4438 shared memory and IPC on systems that support it.
4440 * Ulrich Drepper has contributed several miscellaneous new functions found
4441 in System V: The `hsearch' family of functions provide an effective
4442 implementation of hash tables; `a64l' and `l64a' provide a very simple
4443 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
4446 * Ulrich Drepper has contributed new reentrant counterparts for the
4447 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
4449 * Ulrich Drepper has contributed new, highly-optimized versions of several
4450 string functions for the i486/Pentium family of processors.
4452 * Ulrich Drepper has updated the Linux-specific code, based largely
4453 on work done in Hongjiu Lu's version of GNU libc for Linux.
4454 The GNU library now supports Linux versions 2.0.10 and later,
4455 using the ELF object file format (i[3456]86-*-linux).
4457 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
4459 * David Mosberger-Tang and Richard Henderson have ported the C library
4460 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
4461 dynamic linking support for ELF/Alpha.
4463 * Richard Henderson contributed several Alpha optimized assembler function
4464 for arithmetic and string handling.
4466 * Ulrich Drepper has contributed a new set of message catalog functions to
4467 support multiple languages using the <libintl.h> interface, for use with
4468 his new package GNU gettext. Translation volunteers have contributed
4469 catalogs of the library's messages in Spanish, German, and Korean.
4471 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
4472 program and the `catgets' function for reading the catalog files it
4473 creates. (The <libintl.h> interface is preferred; we include the
4474 <nl_types.h> interface using `catgets' only for source compatibility with
4475 programs already written to use it.)
4477 * New header file <values.h> gives SVID-compatible names for <limits.h>
4480 * Various new macros, declarations, and small header files for compatibility
4483 * New function `group_member' is a convenient way to check if a process has
4484 a given effective group ID.
4486 * When using GCC 2.7 and later, the socket functions are now declared in a
4487 special way so that passing an argument of type `struct sockaddr_in *',
4488 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
4489 `struct sockaddr *' type, does not generate a type-clash warning.
4491 * New function `error' declared in header file <error.h> is a convenient
4492 function for printing error messages and optionally exiting; this is the
4493 canonical function used in GNU programs. The new functions `err', `warn',
4494 and friends in header file <err.h> are the canonical 4.4 BSD interface for
4495 doing the same thing.
4497 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
4498 POSIX.2 `glob' function to do ~ and {...} expansion.
4500 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
4501 `clearenv' which is used in POSIX.9 is also available.
4503 * New function `getsid' returns session ID number on systems that support it.
4505 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
4506 files <db.h> and <mpool.h> provide a rich set of functions for several
4507 types of simple databases stored in memory and in files, and <ndbm.h> is
4508 an old `ndbm'-compatible interface using the `db' functions. Link with
4509 `-ldb' to get these functions.
4511 * New macro `strdupa' copies a string like `strdup', but uses local stack
4512 space from `alloca' instead of dynamic heap space from `malloc'.
4514 * New function `strnlen' is like `strlen' but searches only a given maximum
4515 number of characters for the null terminator. `stpncpy', `strndup' and
4516 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
4519 * New function `statfs' in header <sys/statfs.h>.
4521 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
4522 provide convenient functions for operating on blocks of null-terminated
4525 * A new suite of functions in <utmp.h> handle all the details of reading
4526 and writing the utmp file.
4528 * An implementation of the NIS/YP(tm) based NSS service was contributed by
4531 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
4532 completely POSIX compliant and also implemented the extended functionality
4533 to handle alternate digit representation and alternate era date formats.
4535 * Ulrich Drepper provided an implementation of the `strptime' function
4536 defined in XPG4.2 which transforms a string into a `struct tm' value.
4538 * Paul Eggert provided the tzselect shell script as part of the timezone
4539 code. The shell script makes it easy to select the correct timezone
4542 * The implementation of the malloc family of functions is completely replaced
4543 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
4544 The implementation uses the mmap function (if available) and it is
4545 optimized for the use in multi threaded programs.
4547 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
4548 functions. This new functionality is usable by specifying a special
4549 salt string and it is compatible with implementation on *BSD systems.
4551 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
4552 `getsubopt' to handle second level command line options, `bsd_signal'
4553 to access BSD style `signal' functionality, the obsolete `regexp' style
4556 * the `lchown' function is available on system which support this
4559 * The implementation of the shadow password handling function was contributed
4562 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
4564 * POSIX.1g support was added. The <sys/select.h> header is available,
4565 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
4566 implementation of `getaddrinfo'.
4570 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
4572 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
4573 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
4575 * The new function `daemon' from 4.4 BSD is useful for server programs that
4576 want to put themselves in the background.
4578 * Joel Sherrill has contributed support for several standalone boards that
4579 run without an operating system.
4581 * `printf', `scanf' and friends now accept a `q' type modifier for long
4582 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
4584 * All of the code taken from BSD (notably most of the math and networking
4585 routines) has been updated from the BSD 4.4-Lite release.
4587 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
4589 * The new functions `getdomainname' and `setdomainname' fetch or change the
4590 YP/NIS domain name. These are system calls which exist on systems which
4593 * The time zone data files have been updated for the latest international
4596 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
4597 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
4601 * The C library now includes support for Sun RPC, from Sun's free
4602 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
4603 are included. (There is still no support for YP.)
4605 * Tom Quinn has contributed a port of the C library to SGI machines running
4606 Irix 4 (mips-sgi-irix4).
4608 * The new `lockf' function is a simplified interface to the locking
4609 facilities of `fcntl', included for compatibility.
4611 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
4613 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
4615 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
4618 * The error message printed by `assert' for a failed assertion now includes
4619 the name of the program (if using GNU ld) and the name of the calling
4620 function (with versions of GCC that support this).
4622 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
4624 * The library now includes the <sys/mman.h> header file and memory
4625 management functions `mmap', `munmap', `mprotect', `msync', and
4626 `madvise', on systems that support those facilities.
4628 * The interface for `mcheck' has changed slightly: the function called to
4629 abort the program when an allocation inconsistency is detected now takes
4630 an argument that indicates the type of failure. The new function
4631 `mprobe' lets you request a consistency check for a particular block at
4632 any time (checks are normally done only when you call `free' or `realloc'
4635 * It is now possible to easily cross-compile the C library, building on one
4636 system a library to run on another machine and/or operating system. All
4637 you need to do is set the variable `HOST_CC' in `configparms' to the
4638 native compiler for programs to run on the machine you are building on (a
4639 few generator programs are used on Unix systems); set `CC' to the
4642 * The new function `fexecve' (only implemented on the GNU system) executes
4643 a program file given a file descriptor already open on the file.
4647 * Brendan Kehoe has contributed most of a port to the DEC Alpha
4648 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
4650 * You can set the variable `libprefix' in `configparms' to specify a prefix
4651 to be prepended to installed library files; this makes it easy to install
4652 the GNU C library to be linked as `-lgnuc' or whatever.
4654 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
4655 copies a limited number of characters from a string, and returns the
4656 address of the last character written.
4658 * You no longer need to check for whether the installed `stddef.h' is
4659 compatible with the GNU C library. configure now checks for you.
4661 * You can now define a per-stream `fileno' function to convert the
4662 stream's cookie into an integral file descriptor.
4664 * ``malloc (0)'' no longer returns a null pointer. Instead, it
4665 allocates zero bytes of storage, and returns a unique pointer which
4666 you can pass to `realloc' or `free'. The behavior is undefined if
4667 you dereference this pointer.
4669 * The C library now runs on Sony NEWS m68k machines running either
4670 NewsOS 3 or NewsOS 4.
4672 * The new `syscall' function is a system-dependent primitive function
4673 for invoking system calls. It has the canonical behavior on Unix
4674 systems, including unreliable return values for some calls (such as
4675 `pipe', `fork' and `getppid').
4677 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
4678 to `EAGAIN', which is the preferred name. On systems whose kernels
4679 use two distinct codes, the C library now translates EWOULDBLOCK to
4680 EAGAIN in every system call function.
4684 * The GNU C Library Reference Manual is now distributed with the library.
4685 `make dvi' will produce a DVI file of the printed manual.
4686 `make info' will produce Info files that you can read on line using C-h i
4687 in Emacs or the `info' program.
4688 Please send comments on the manual to bug-glibc-manual@gnu.org.
4690 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
4692 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
4694 * Jason Merrill has contributed a port to the Sequent Symmetry running
4695 Dynix version 3 (i386-sequent-dynix).
4697 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
4698 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
4700 * New function `memory_warnings' lets you arrange to get warnings when
4701 malloc is running out of memory to allocate, like Emacs gives you.
4703 * The C library now contains the relocating allocator used in Emacs 19 for
4704 its editing buffers. This allocator (ralloc) minimizes allocation
4705 overhead and fragmentation by moving allocated regions around whenever it
4706 needs to. You always refer to a ralloc'd region with a "handle" (a
4707 pointer to a pointer--an object of type `void **').
4709 * There is a new `printf' format: `%m' gives you the string corresponding
4710 to the error code in `errno'.
4712 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
4713 or `%[' conversion, but instead of filling in a fixed-sized buffer you
4714 pass, the `a' modifier says to fill in a `char **' you pass with a
4717 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
4718 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
4719 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
4721 * `mkstemp' is a traditional Unix function to atomically create and open a
4722 uniquely-named temporary file.
4726 * The standard location for the file that says what the local timezone is
4727 has changed again. It is now `/usr/local/etc/localtime' (or more
4728 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
4730 * The distribution no longer contains any files with names longer than 14
4733 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
4734 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
4736 * New functions `ttyslot' and `syslog' from 4.4 BSD.
4740 * The configuration process has changed quite a bit. The `configure'
4741 script is now used just like the configuration scripts for other GNU
4742 packages. The `sysdeps' directory hierarchy is much rearranged.
4743 The file `INSTALL' explains the new scheme in detail.
4745 * The header files no longer need to be processed into ANSI C and
4746 traditional C versions. There is just one set of files to install, and
4747 it will work with ANSI or old C compilers (including `gcc -traditional').
4749 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
4750 MIPS DECStation running Ultrix 4.
4752 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
4753 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
4754 made itself into a shared library.
4756 * Yet further improved support for the i386, running 4.3 BSD-like systems
4757 (such as Mach 3 with the Unix single-server), or System V.
4759 * New function `strncasecmp' to do case-insensitive string comparison
4760 with limited length.
4762 * New function `strsep' is a reentrant alternative to `strtok'.
4764 * New functions `scandir' and `alphasort' for searching directories.
4766 * New function `setenv' is a better interface to `putenv'.
4768 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
4769 function for traversing a directory tree.
4771 * The GNU obstack package is now also part of the C library.
4772 The new function `open_obstack_stream' creates a stdio stream that
4773 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
4774 formatted output directly to an obstack.
4776 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
4777 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
4779 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
4781 * The new functions `strfry' and `memfrob' do mysterious and wonderful
4782 things to your strings.
4784 * There are some new test programs: test-fseek, testmb, and testrand.
4786 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
4787 These ports are not finished, but are a good starting place for really
4788 supporting those systems.
4790 * `/etc/localtime' is now the standard location for the file that says what
4791 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
4792 This follows the general principle that `/etc' is the place for all local
4793 configuration files.
4795 * The C library header files now use `extern "C"' when used by the C++
4796 compiler, so the C library should now work with C++ code.
4798 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
4799 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
4802 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
4803 function which uses the `merge sort' algorithm, and is said to be
4804 significantly faster than the old GNU `qsort' function. Merge sort is
4805 now the standard `qsort' function. The new algorithm can require a lot
4806 of temporary storage; so, the old sorting function is called when the
4807 required storage is not available.
4809 * The C library now includes Michael Glad's Ultra Fast Crypt, which
4810 provides the Unix `crypt' function, plus some other entry points.
4812 * The code and header files taken from 4.4 BSD have been updated with the
4813 latest files released from Berkeley.
4815 ----------------------------------------------------------------------
4816 Copyright information:
4818 Copyright (C) 1992-2018 Free Software Foundation, Inc.
4820 Permission is granted to anyone to make or distribute verbatim copies
4821 of this document as received, in any medium, provided that the
4822 copyright notice and this permission notice are preserved,
4823 thus giving the recipient permission to redistribute in turn.
4825 Permission is granted to distribute modified versions
4826 of this document, or of portions of it,
4827 under the above conditions, provided also that they
4828 carry prominent notices stating who last changed them.
4831 version-control: never