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 * Nominative and genitive month names are now supported for the Catalan and
22 Czech languages. The Catalan and Greek languages now support abbreviated
23 alternative month names.
25 * Building and running on GNU/Hurd systems now works without out-of-tree
28 Deprecated and removed features, and other changes affecting compatibility:
30 * The nonstandard header files <libio.h> and <_G_config.h> are no longer
31 installed. Software that was using either header should be updated to
32 use standard <stdio.h> interfaces instead.
34 * The stdio functions 'getc' and 'putc' are no longer defined as macros.
35 This was never required by the C standard, and the macros just expanded
36 to call alternative names for the same functions. If you hoped getc and
37 putc would provide performance improvements over fgetc and fputc, instead
38 investigate using (f)getc_unlocked and (f)putc_unlocked, and, if
39 necessary, flockfile and funlockfile.
41 * All stdio functions now treat end-of-file as a sticky condition. If you
42 read from a file until EOF, and then the file is enlarged by another
43 process, you must call clearerr or another function with the same effect
44 (e.g. fseek, rewind) before you can read the additional data. This
45 corrects a longstanding C99 conformance bug. It is most likely to affect
46 programs that use stdio to read interactive input from a terminal.
49 * The macros 'major', 'minor', and 'makedev' are now only available from
50 the header <sys/sysmacros.h>; not from <sys/types.h> or various other
51 headers that happen to include <sys/types.h>. These macros are rarely
52 used, not part of POSIX nor XSI, and their names frequently collide with
53 user code; see https://sourceware.org/bugzilla/show_bug.cgi?id=19239 for
56 <sys/sysmacros.h> is a GNU extension. Portable programs that require
57 these macros should first include <sys/types.h>, and then include
58 <sys/sysmacros.h> if __GNU_LIBRARY__ is defined.
60 * The tilegx*-*-linux-gnu configurations are no longer supported.
62 Changes to build and runtime requirements:
64 [Add changes to build and runtime requirements here]
66 Security related changes:
68 [Add security related changes here]
70 The following bugs are resolved with this release:
72 [The release manager will add the list generated by
73 scripts/list-fixed-bugs.py just before the release.]
80 * The GNU C Library can now be compiled with support for building static
81 PIE executables (See --enable-static-pie in INSTALL). These static PIE
82 executables are like static executables but can be loaded at any address
83 and provide additional security hardening benefits at the cost of some
84 memory and performance. When the library is built with --enable-static-pie
85 the resulting libc.a is usable with GCC 8 and above to create static PIE
86 executables using the GCC option '-static-pie'. This feature is currently
87 supported on i386, x86_64 and x32 with binutils 2.29 or later, and on
88 aarch64 with binutils 2.30 or later.
90 * Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin, cosf,
91 sinf, sincosf and tan with FMA, contributed by Arjan van de Ven and
94 * Optimized x86-64 trunc and truncf for processors with SSE4.1.
96 * Optimized generic expf, exp2f, logf, log2f, powf, sinf, cosf and sincosf.
98 * In order to support faster and safer process termination the malloc API
99 family of functions will no longer print a failure address and stack
100 backtrace after detecting heap corruption. The goal is to minimize the
101 amount of work done after corruption is detected and to avoid potential
102 security issues in continued process execution. Reducing shutdown time
103 leads to lower overall process restart latency, so there is benefit both
104 from a security and performance perspective.
106 * The abort function terminates the process immediately, without flushing
107 stdio streams. Previous glibc versions used to flush streams, resulting
108 in deadlocks and further data corruption. This change also affects
109 process aborts as the result of assertion failures.
111 * On platforms where long double has the IEEE binary128 format (aarch64,
112 alpha, mips64, riscv, s390 and sparc), the math library now implements
113 _Float128 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015.
114 These are the same interfaces added in version 2.26 for some platforms where
115 this format is supported but is not the format of long double.
117 * On platforms with support for _Float64x (aarch64, alpha, i386, ia64,
118 mips64, powerpc64le, riscv, s390, sparc and x86_64), the math library now
119 implements interfaces for that type, as defined by ISO/IEC TS
120 18661-3:2015. These are corresponding interfaces to those supported for
123 * The math library now implements interfaces for the _Float32, _Float64 and
124 _Float32x types, as defined by ISO/IEC TS 18661-3:2015. These are
125 corresponding interfaces to those supported for _Float128.
127 * glibc now implements the memfd_create and mlock2 functions on Linux.
129 * Support for memory protection keys was added. The <sys/mman.h> header now
130 declares the functions pkey_alloc, pkey_free, pkey_mprotect, pkey_set,
133 * The copy_file_range function was added.
135 * Optimized memcpy, mempcpy, memmove, and memset for sparc M7.
137 * The ldconfig utility now processes `include' directives using the C/POSIX
138 collation ordering. Previous glibc versions used locale-specific
139 ordering, the change might break systems that relied on that.
141 * Support for two grammatical forms of month names has been added.
142 In a call to strftime, the "%B" and "%b" format specifiers will now
143 produce the grammatical form required when the month is used as part
144 of a complete date. New "%OB" and "%Ob" specifiers produce the form
145 required when the month is named by itself. For instance, in Greek
146 and in many Slavic and Baltic languages, "%B" will produce the month
147 in genitive case, and "%OB" will produce the month in nominative case.
149 In a call to strptime, "%B", "%b", "%h", "%OB", "%Ob", and "%Oh"
150 are all valid and will all accept any known form of month
151 name---standalone or complete, abbreviated or full. In a call to
152 nl_langinfo, the query constants MON_1..12 and ABMON_1..12 return
153 the strings used by "%B" and "%b", respectively. New query
154 constants ALTMON_1..12 and _NL_ABALTMON_1..12 return the strings
155 used by "%OB" and "%Ob", respectively.
157 In a locale definition file, use "alt_mon" and "ab_alt_mon" to
158 define the strings for %OB and %Ob, respectively; these have the
159 same syntax as "mon" and "abmon". These arrays are optional; if they
160 are not provided then they have the same content as "mon" and "abmon",
163 These features are provided for locales which define "alt_mon" and/or
164 "ab_alt_mon" in their locale source data. This release includes such
165 alternative month name data for the following languages: Belarusian,
166 Croatian, Greek, Lithuanian, Polish, Russian, and Ukrainian.
168 This feature is currently a GNU extension, but it is expected to
169 be added to the next revision of POSIX, and it is also already
170 available on some BSD-derived operating systems.
172 This feature will cause existing statically compiled applications
173 to fail to load locales and fall back to the builtin C/POSIX locales.
174 See notes below for other changes affecting compatibility.
176 * Support for the RISC-V ISA running on Linux has been added. This port
177 requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
178 for the following ISA and ABI pairs:
184 Deprecated and removed features, and other changes affecting compatibility:
186 * Statically compiled applications attempting to load locales compiled for the
187 GNU C Library version 2.27 will fail and fall back to the builtin C/POSIX
188 locale. The reason for this is that the addition of the new "%OB" and "%Ob",
189 support for two grammatical forms of the month names, also extends the locale
190 data binary format. Static applications needing locale support must be
191 recompiled to match the runtime and data they are deployed with. In some
192 distributions there is an upgrade window where dynamically linked applications
193 may use a new library but the old locale data and also fall back to the
194 builtin C/POSIX locales; restarting the application process is sufficient to
197 * Support for statically linked applications which call dlopen is deprecated
198 and will be removed in a future version of glibc. Applications which call
199 dlopen need to be linked dynamically instead.
201 * Support for old programs which use internal stdio data structures and
202 functions is deprecated. This includes programs which use the C++ streams
203 provided by libstdc++ in GCC 2.95. Programs which use the internal
204 symbols _IO_adjust_wcolumn, _IO_default_doallocate, _IO_default_finish,
205 _IO_default_pbackfail, _IO_default_uflow, _IO_default_xsgetn,
206 _IO_default_xsputn, _IO_doallocbuf, _IO_do_write, _IO_file_attach,
207 _IO_file_close, _IO_file_close_it, _IO_file_doallocate, _IO_file_fopen,
208 _IO_file_init, _IO_file_jumps, _IO_fileno, _IO_file_open,
209 _IO_file_overflow, _IO_file_read, _IO_file_seek, _IO_file_seekoff,
210 _IO_file_setbuf, _IO_file_stat, _IO_file_sync, _IO_file_underflow,
211 _IO_file_write, _IO_file_xsputn, _IO_flockfile, _IO_flush_all,
212 _IO_flush_all_linebuffered, _IO_free_backup_area, _IO_free_wbackup_area,
213 _IO_init, _IO_init_marker, _IO_init_wmarker, _IO_iter_begin, _IO_iter_end,
214 _IO_iter_file, _IO_iter_next, _IO_least_wmarker, _IO_link_in,
215 _IO_list_all, _IO_list_lock, _IO_list_resetlock, _IO_list_unlock,
216 _IO_marker_delta, _IO_marker_difference, _IO_remove_marker, _IO_seekmark,
217 _IO_seekwmark, _IO_str_init_readonly, _IO_str_init_static,
218 _IO_str_overflow, _IO_str_pbackfail, _IO_str_seekoff, _IO_str_underflow,
219 _IO_switch_to_main_wget_area, _IO_switch_to_wget_mode,
220 _IO_unsave_wmarkers, _IO_wdefault_doallocate, _IO_wdefault_finish,
221 _IO_wdefault_pbackfail, _IO_wdefault_setbuf, _IO_wdefault_uflow,
222 _IO_wdefault_xsgetn, _IO_wdefault_xsputn, _IO_wdoallocbuf, _IO_wdo_write,
223 _IO_wfile_jumps, _IO_wfile_overflow, _IO_wfile_sync, _IO_wfile_underflow,
224 _IO_wfile_xsputn, _IO_wmarker_delta, or _IO_wsetb may stop working with a
225 future version of glibc. Unlike other symbol removals, these old
226 applications will not be supported using compatibility symbols.
228 * On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
229 defined by <sys/ptrace.h>.
231 * libm no longer supports SVID error handling (calling a user-provided
232 matherr function on error) or the _LIB_VERSION variable to control error
233 handling. (SVID error handling and the _LIB_VERSION variable still work
234 for binaries linked against older versions of the GNU C Library.) The
235 libieee.a library is no longer provided. math.h no longer defines struct
236 exception, or the macros X_TLOSS, DOMAIN, SING, OVERFLOW, UNDERFLOW,
237 TLOSS, PLOSS and HUGE.
239 * The libm functions pow10, pow10f and pow10l are no longer supported for
240 new programs. Programs should use the standard names exp10, exp10f and
241 exp10l for these functions instead.
243 * The mcontext_t type is no longer the same as struct sigcontext. On
244 platforms where it was previously the same, this changes the C++ name
245 mangling for interfaces involving this type.
247 * The add-ons mechanism for building additional packages at the same time as
248 glibc has been removed. The --enable-add-ons configure option is now
251 * The --without-fp configure option is now ignored. Whether hardware
252 floating-point instructions are used is now configured based on whether
253 the compiler used at configure time (without any options implied by a
254 --with-cpu= configure option) uses such instructions.
256 * The res_hnok, res_dnok, res_mailok and res_ownok functions now check that
257 the specified string can be parsed as a domain name.
259 * In the malloc_info output, the <heap> element may contain another <aspace>
260 element, "subheaps", which contains the number of sub-heaps.
262 * The libresolv function p_secstodate is no longer supported for new
265 * The tilepro-*-linux-gnu configuration is no longer supported.
267 * The nonstandard header files <libio.h> and <_G_config.h> are deprecated
268 and will be removed in a future release. Software that is still using
269 either header should be updated to use standard <stdio.h> interfaces
272 libio.h was originally the header for a set of supported GNU extensions,
273 but they have not been maintained as such in many years, they are now
274 standing in the way of improvements to stdio, and we don't think there are
275 any remaining external users. _G_config.h was never intended for public
276 use, but predates the bits convention.
278 Changes to build and runtime requirements:
280 * bison version 2.7 or later is required to generate code in the 'intl'
283 Security related changes:
285 CVE-2009-5064: The ldd script would sometimes run the program under
286 examination directly, without preventing code execution through the
287 dynamic linker. (The glibc project disputes that this is a security
288 vulnerability; only trusted binaries must be examined using the ldd
291 CVE-2017-15670: The glob function, when invoked with GLOB_TILDE,
292 suffered from a one-byte overflow during ~ operator processing (either
293 on the stack or the heap, depending on the length of the user name).
294 Reported by Tim Rühsen.
296 CVE-2017-15671: The glob function, when invoked with GLOB_TILDE,
297 would sometimes fail to free memory allocated during ~ operator
298 processing, leading to a memory leak and, potentially, to a denial
301 CVE-2017-15804: The glob function, when invoked with GLOB_TILDE and
302 without GLOB_NOESCAPE, could write past the end of a buffer while
303 unescaping user names. Reported by Tim Rühsen.
305 CVE-2017-17426: The malloc function, when called with an object size near
306 the value SIZE_MAX, would return a pointer to a buffer which is too small,
307 instead of NULL. This was a regression introduced with the new malloc
308 thread cache in glibc 2.26. Reported by Iain Buclaw.
310 CVE-2017-1000408: Incorrect array size computation in _dl_init_paths leads
311 to the allocation of too much memory. (This is not a security bug per se,
312 it is mentioned here only because of the CVE assignment.) Reported by
315 CVE-2017-1000409: Buffer overflow in _dl_init_paths due to miscomputation
316 of the number of search path components. (This is not a security
317 vulnerability per se because no trust boundary is crossed if the fix for
318 CVE-2017-1000366 has been applied, but it is mentioned here only because
319 of the CVE assignment.) Reported by Qualys.
321 CVE-2017-16997: Incorrect handling of RPATH or RUNPATH containing $ORIGIN
322 for AT_SECURE or SUID binaries could be used to load libraries from the
325 CVE-2018-1000001: Buffer underflow in realpath function when getcwd function
326 succeeds without returning an absolute path due to unexpected behaviour
327 of the Linux kernel getcwd syscall. Reported by halfdog.
329 CVE-2018-6485: The posix_memalign and memalign functions, when called with
330 an object size near the value of SIZE_MAX, would return a pointer to a
331 buffer which is too small, instead of NULL. Reported by Jakub Wilk.
333 CVE-2018-6551: The malloc function, when called with an object size near
334 the value of SIZE_MAX, would return a pointer to a buffer which is too
335 small, instead of NULL.
337 The following bugs are resolved with this release:
339 [866] glob: glob should match dangling symlinks
340 [1062] glob: sysdeps/generic/glob.c merge from gnulib (part 3 of 3)
341 [2522] localedata: ca_ES@valencia: new Valencian (meridional Catalan)
343 [5997] math: Very slow execution of sinf function
344 [10580] localedata: hr_HR: updated locale
345 [10871] locale: 'mon' array should contain both nominative and genitive
347 [12349] localedata: eu_ES: incorrect thousands separator
348 [13605] localedata: shn_MM: new Shan locale
349 [13805] localedata: ru_RU: currency should use ',' as radix point
350 [13953] localedata: km_KH: locale update
351 [13994] localedata: mjw_IN: new locale
352 [14121] build: make writes .mo files in po directory
353 [14333] libc: Fix the race between atexit() and exit()
354 [14681] dynamic-link: _dl_get_origin leaks memory via executable link map.
355 [14925] localedata: bn_*: LC_IDENTIFICATION.language key should be
357 [15260] localedata: LC_MESSAGES.{yes,no}{str,expr}: various errors
358 [15261] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of full-
359 width Latin characters
360 [15332] localedata: es_CU: locale update
361 [15436] stdio: Don't close or flush stdio streams on abort
362 [15537] localedata: lv_LV: invalid collation for Latvian diacritical
364 [16148] localedata: ca_ES: incorrect thousands separator
365 [16750] dynamic-link: ldd should not try to execute the binaries
367 [16777] localedata: pl_PL: incorrect thousands separator in locale
368 [16905] localedata: hanzi: new collation
369 [17563] localedata: cmn_TW: add hanzi collation
370 [17750] localedata: wrong collation order of diacritics in most locales
371 [17804] libc: scandirat fails with ENOMEM because it checks for errno even
373 [17956] build: Build fails on missing definitions from header file
374 nss/nss.h when Mozilla NSS is used for cryptography
375 [18203] libc: realpath() does not handle unreachable paths correctly
376 [18572] dynamic-link: [arm] Lazy TLSDESC relocation has data race
377 [18812] localedata: kab_DZ: new Kabyle Algeria locale
378 [18822] libc: Internal functions are called via PLT
379 [18858] string: _HAVE_STRING_ARCH_xxx aren't defined for i386 nor x86_64
380 [19170] libc: __gmon_start__ defined in hppa in crtn.S
381 [19574] libc: glibc should support building static PIE binaries
382 [19852] localedata: charmaps/UTF-8: incorrect wcwidth for U+3099 and
384 [19971] glob: glob: Do not skip entries with zero d_ino values
385 [19982] localedata: fr.po: spelling mistake for error code EXDEV
386 [20008] localedata: km_KH: convert to translit_neutral
387 [20009] localedata: tr_TR: convert LC_CTYPE to i18n
388 [20142] math: [x86_64] Add SSE4.1 trunc, truncf
389 [20204] dynamic-link: _dl_open_hook and _dlfcn_hook hardening
390 [20482] localedata: de_CH: abbreviated weekdays should be two letters
391 [20498] localedata: miq_NI: new Mískitu / Miskito (miq) language locale
393 [20532] nss: getaddrinfo uses errno and h_errno without guaranteeing
394 they're set, wrong errors returned by gaih_inet when lookup functions
396 [20756] localedata: [PATCH] Use Unicode wise thousands separator
397 [20826] network: posix/tst-getaddrinfo5 fails on hosts without network
399 [20952] localedata: yuw_PG: new locale
400 [21084] localedata: charmaps/IBM858: new codepage
401 [21161] manual: [PATCH] fix typo in manual/arith.texi on strtoul prototype
402 [21242] libc: assert gives pedantic warning in old gcc versions
403 [21265] dynamic-link: _dl_runtime_resolve isn't compatible with Intel C++
404 __regcall calling convention
405 [21309] math: signed integer overflow in sysdeps/ieee754/dbl-64/e_pow.c
406 [21326] libc: C99 functions are not declared for C++11 and later if
407 _GNU_SOURCE is not predefined by g++
408 [21457] libc: sys/ucontext.h namespace
409 [21530] libc: tmpfile() should be implemented using O_TMPFILE
410 [21660] math: GCC fails to compile a formula with tgmath.h
411 [21672] nptl: sys-libs/glibc on ia64 crashes on thread exit: signal
412 SIGSEGV, Segmentation fault: pthread_create.c:432: __madvise
413 (pd->stackblock, freesize - PTHREAD_STACK_MIN, MADV_DONTNEED);
414 [21684] math: tgmath.h handling of complex integers
415 [21685] math: tgmath.h handling of bit-fields
416 [21686] math: tgmath.h handling of __int128
417 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
419 [21745] libc: [powerpc64le] Extra PLT reference with --enable-stack-
421 [21750] localedata: column width of characters incompatible with classical
423 [21754] malloc: malloc: Perform as little work as possible after heap
424 consistency check failures
425 [21780] libc: hppa: p{read,write}v2 does not set ENOSUP on invalid flag
426 [21790] libc: Missing __memset_zero_constant_len_parameter in libc.so
427 [21791] string: Unused XXX_chk_XXX functions in libc.a
428 [21815] dynamic-link: FAIL: elf/tst-prelink-cmp with GCC is defaulted to
430 [21836] localedata: Removed redundant data (LC_MONETARY) in various Indian
432 [21845] localedata: Added new Locale bho_NP
433 [21853] localedata: Fix abday Which looks same as day in zh_SG
434 [21854] localedata: Added New Locale en_SC
435 [21864] libc: xmalloc.o is compiled with -DMODULE_NAME=libc
436 [21871] dynamic-link: _dl_runtime_resolve_avx_opt is slower than
437 _dl_runtime_resolve_avx_slow
438 [21885] network: getaddrinfo: gethosts does not release resolver context
439 on memory allocation failure
440 [21899] libc: XPG4.2 sigaction namespace
441 [21908] dynamic-link: dynamic linker broke on ia64 (mmap2 consolidation is
443 [21913] libc: static binaries SIGSEGV in __brk when host's gcc is pie-by-
445 [21915] nss: nss_files can return with NSS_STATUS_SUCCESS and a clobbered
446 errno value, causing getaddrinfo to fail
447 [21920] localedata: Fix p_cs_precedes/n_cs_precedes for mt_MT
448 [21922] network: getaddrinfo with AF_INET/AF_INET6 returns EAI_NONAME
449 instead of EAI_NODATA
450 [21928] libc: sys/ptrace.h: remove obsolete temporary development Linux
451 constant PTRACE_SEIZE_DEVEL
452 [21930] math: C-only gcc builtins used in <math.h> isinf
453 [21932] network: Unpaired __resolv_context_get in generic get*_r
455 [21941] math: powerpc: Wrong register constraint for xssqrtqp in sqrtf128
456 [21944] libc: sigval namespace
457 [21951] localedata: Update hanzi collation by stroke
458 [21955] math: Wrong alignment of L(SP_RANGE)/L(SP_INF_0) in
459 sysdeps/x86_64/fpu/e_expf.S
460 [21956] libc: Stack allocation in MIPS syscall impl (ubounded stack
461 allocation in syscall loops)
462 [21959] localedata: Fix Country name for xh_ZA
463 [21960] localedata: Fix abmon for bem_ZM
464 [21966] math: AVX2 mathvec functions use FMA without checking
465 [21967] math: When 512-bit AVX2 wrapper functions in mathvec are used?
466 [21971] localedata: Added New Locale for mfe_MU
467 [21972] libc: assert macro requires operator== (int) for its argument type
468 [21973] math: [sparc] libm missing sqrtl compat symbol
469 [21974] libc: Remove __bb_init_func and __bb_exit_func
470 [21982] string: stratcliff.c: error: assuming signed overflow does not
472 [21986] stdio: __guess_grouping is called incorrectly
473 [21987] math: [sparc32] wrong bits/long-double.h installed
474 [22019] localedata: Wrong placement of monetary symbol in el_GR (negative
476 [22022] localedata: Missing country_name for mni_IN
477 [22023] localedata: Removed redundant data (LC_TIME and LC_MESSAGES) for
479 [22025] locale: iconv: Inconsistency between pointer mangling and NULL
481 [22026] locale: iconv_open: heap overflow on gconv_init failure
482 [22028] math: bits/math-finite.h _MSUF_ expansion namespace
483 [22035] math: [m68k] bits/math-inline.h macro namespace
484 [22038] localedata: Fix abbreviated weeks and months for Somali
485 [22044] localedata: Remove redundant data for Limburgish Language
486 [22050] malloc: Linking with -lmcheck does not hook
487 __malloc_initialize_hook correctly
488 [22051] libc: zero terminator in the middle of glibc's .eh_frame
489 [22052] malloc: malloc failed to compile with GCC 7 and -O3
490 [22070] localedata: charmaps/UTF-8: wcwidth for
491 Prepended_Concatenation_Mark codepoints set to 0 (should be 1)
492 [22074] localedata: charmaps/UTF-8: wcwidth for U+1160-U+11FF (Hangul
493 Jungseong and Jongseong) should be 0
494 [22078] nss: nss_files performance issue in multi mode
495 [22082] math: bits/math-finite.h exp10 condition
496 [22086] libc: pcprofiledump incorrect cross-endian condition
497 [22093] dynamic-link: ld.so no longer searches in .../x86_64
498 [22095] network: Name server address allocation memory leak in resolv.conf
500 [22096] network: __resolv_conf_attach can incorrectly free passed conf
502 [22100] localedata: om_KE: LC_TIME: copy redundant data from om_ET
503 [22101] dynamic-link: Dynamic loader must ignore "debug" shared objects
505 [22111] malloc: malloc: per thread cache is not returned when thread exits
506 [22112] localedata: Fix LC_TELEPHONE/LC_NAME for az_AZ
507 [22134] libc: [linux] implement fexecve with execveat
508 [22142] libc: [powerpc] printf oupts a wrong value of DBL_MAX on ppc64 and
510 [22145] libc: ttyname() gives up too early in the face of namespaces
511 [22146] math: C++ build issue with float128 on x86_64
512 [22153] nptl: nptl: save error code before process termination
513 [22156] libc: [hppa,ia64,microblaze] Executable stack default
514 [22159] malloc: malloc: MALLOC_CHECK_ broken with --enable-tunables=no
515 [22161] nscd: nscd cache prune for netgroups hangs after timeout bump
516 [22165] libc: [hppa] Text relocations in libc.so
517 [22180] libc: destructor registered via __cxa_atexit is called twice
518 [22183] glob: commit 5554304f0ddd ("posix: Allow glob to match dangling
519 symlinks") cause "make" segfaults
520 [22189] math: [powerpc] math_private.h definitions of math_opt_barrier and
522 [22207] libc: FAIL: stdlib/test-atexit-race
523 [22225] math: nearbyint arithmetic moved before feholdexcept
524 [22229] math: [sparc32] missing copysignl, fabsl, fmal compat symbols
525 [22235] math: iscanonical in C++ and float128
526 [22243] math: log2(0) and log10(0) are wrong in downward rounding without
527 the svid compat wrapper
528 [22244] math: ynf and yn are wrong without the svid compat wrapper
529 [22273] libc: Improper assert in Linux posix_spawn implementation
530 [22284] libc: -pg -pie doesn't work
531 [22292] locale: localedef exits with error 4 when it should be error 1
532 [22294] locale: Allow "" for int_currency_symbol definition in locales.
533 [22295] locale: Don't warn on non-symbolic characters in locale sources in
535 [22296] math: glibc 2.26: signbit build issue with Gcc 5.5.0 on x86_64
536 [22298] nptl: x32: lockups on recursive pthread_mutex_lock after upgrade
538 [22299] dynamic-link: Problem with $PLATFORM on x86_64 platform
539 [22320] glob: Buffer overflow in glob with GLOB_TILDE (CVE-2017-15670)
540 [22321] libc: sysconf(_SC_IOV_MAX) returns -1 on Linux
541 [22322] libc: [mips64] wrong bits/long-double.h installed
542 [22325] glob: Memory leak in glob with GLOB_TILDE (CVE-2017-15671)
543 [22332] glob: Buffer overflow in glob with GLOB_TILDE in unescaping
545 [22336] localedata: cs_CZ LC_COLLATE does not use i18n
546 [22343] malloc: Integer overflow in posix_memalign
547 [22347] libc: getrandom() returns the number of bytes that were copied to
548 the buffer even though the comments say "Return 0 on success and -1 on
550 [22353] string: sysdeps/i386/i586/strcpy.S isn't maintainable
551 [22362] libc: Installed crt1.o, crti,.o and crtn.o files are used with
553 [22370] dynamic-link: Incorrect note padding check
554 [22375] libc: malloc returns pointer from tcache_get when should return
555 NULL (CVE-2017-17426)
556 [22377] math: iseqsig, float128 and C++
557 [22382] localedata: Error in tpi_PG locale
558 [22387] localedata: Replace unicode sequences <Uxxxx> for characters
559 inside the ASCII printable range
560 [22402] math: [powerpc64le] __MATH_TG does not support _Float128 for
562 [22403] localedata: Slash needs escaping in some locales
563 [22408] malloc: malloc_info access heaps without arena lock, ignores heaps
564 [22409] network: res_hnok does not accept some host names used on the
566 [22412] network: res_dnok, res_hnok should perform syntax checks
567 [22413] network: ns_name_pton ignores syntactically invalid trailing
569 [22415] stdio: setvbuf can lead to invalid free/segfault
570 [22432] build: Non-deterministic build
571 [22439] malloc: malloc_info should compute summary statistics for all sub-
573 [22442] network: if_nametoindex could report index for the wrong
575 [22446] build: aliasing violation calling readlink in handle_request
576 [22447] build: unsafe call to strlen with a non-string in getlogin_r.c
577 [22457] libc: Generic preadv/pwritev incorrectly calls __posix_memalign
578 [22459] libc: FAIL: elf/check-localplt with __stack_chk_fail related to
579 __nscd_hash/__nss_hash
580 [22463] network: p_secstodate overflow handling
581 [22469] localedata: pl_PL LC_COLLATE does not use i18n
582 [22478] libc: sigwait can fail with EINTR
583 [22505] libc: ldconfig processes include directive in locale-specific
585 [22515] localedata: hsb_DE LC_COLLATE does not use copy "iso14651_t1"
586 [22517] localedata: et_EE LC_COLLATE does not use copy "iso14651_t1"
587 [22519] localedata: is_IS LC_COLLATE does not use copy "iso14651_t1"
588 [22524] localedata: lt_LT LC_COLLATE does not use copy "iso14651_t1"
589 [22527] localedata: tr_TR LC_COLLATE does not use copy "iso14651_t1"
590 [22534] localedata: Collation rules for Serbian and Bosnian should be the
592 [22561] math: [DR#471] cacosh (0 + iNaN) should return NaN +/- i pi/2
593 [22568] math: [DR#471] ctanh (0 + iNaN), ctanh (0 + i Inf)
594 [22577] libc: missing newline after "cannot allocate TLS data structures
596 [22588] manual: manual/conf.texi: missing underscore in front of
598 [22593] math: nextafter and nexttoward are declared with const attribute
599 [22596] manual: manual: finite(nan) wrongly described as returning nonzero
600 [22603] string: ia64 memchr overflows internal pointer check
601 [22605] libc: SH clone does not set the exit code correctly
602 [22606] dynamic-link: Incorrect array size computation in _dl_init_paths
604 [22607] dynamic-link: Buffer Overflow in _dl_init_paths (CVE-2017-1000409)
605 [22611] malloc: malloc/tst-realloc wrongly assumes that errno must not be
606 modified in case of success
607 [22614] build: gcc: error: unrecognized command line option ‘-no-pie’
608 [22615] manual: manual: ambiguous wording about errno value in case of
610 [22624] libc: MIPS setjmp() saves incorrect 'o0' register in --enable-
612 [22625] dynamic-link: RPATH $ORIGIN replaced by PWD for AT_SECURE/SUID
613 binaries or if /proc is not mounted (CVE-2017-16997)
614 [22627] dynamic-link: $ORIGIN in $LD_LIBRARY_PATH is substituted twice
615 [22630] build: $(no-pie-ldflag) is no longer effective
616 [22631] math: [m68k] Bad const attributes in bits/mathinline.h
617 [22635] nptl: pthread_self returns NULL before libpthread is loaded
618 [22636] nptl: PTHREAD_STACK_MIN is too small on x86-64
619 [22637] nptl: guard size is subtracted from thread stack size instead of
621 [22648] libc: getrlimit/setrlimit with RLIM_INFINITY broken on alpha
622 [22657] localedata: hu_HU: Avoid double space in date
623 [22660] math: fmax, fmin sNaN handling on alpha
624 [22664] libc: New warning of GCC8
625 [22665] math: alpha: ceil and floor raise inexact exceptions
626 [22666] math: alpha: trunc raise inexact exceptions
627 [22667] libc: makecontext lacks stack alignment on i386
628 [22678] libc: prlimit fails for RLIM_INFINITY values on 32-bit machines
629 [22679] libc: getcwd(3) can succeed without returning an absolute path
631 [22685] libc: PowerPC: Static AT_SECURE binaries segfault with lock-
633 [22687] math: [powerpc-nofpu] complex long double functions spurious
635 [22688] math: [powerpc-nofpu] remainderl wrong sign of zero result
636 [22690] math: [ldbl-128ibm] lrintl, lroundl missing "invalid" exceptions
637 [22691] math: [powerpc-nofpu] fmaxmagl, fminmagl spurious "invalid"
639 [22693] math: [ldbl-128ibm] log1pl (-qNaN) spurious "invalid" exception
640 [22697] math: [powerpc] llround spurious "inexact" exceptions on 32-bit
642 [22701] nis: Incomplete removal of libnsl
643 [22702] math: [powerpc-nofpu] nearbyintl traps with trapping "inexact"
644 [22707] libc: Missing defines in elf.h for DF_1_STUB and DF_1_PIE.
645 [22715] dynamic-link: FAIL: elf/tst-audit10
646 [22719] libc: Backtrace tests fail on hppa
647 [22742] libc: [aarch64] mcontext_t __reserved field got renamed
648 [22743] nptl: __pthread_register_cancel corrupts stack after f81ddabffd
649 [22765] crypt: (struct crypt_data *data)->initialized is not set to zero
650 before the first call to crypt_r () in crypt/badsalttest.c
657 * A per-thread cache has been added to malloc. Access to the cache requires
658 no locks and therefore significantly accelerates the fast path to allocate
659 and free small amounts of memory. Refilling an empty cache requires locking
660 the underlying arena. Performance measurements show significant gains in a
661 wide variety of user workloads. Workloads were captured using a special
662 instrumented malloc and analyzed with a malloc simulator. Contributed by
663 DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
665 * Unicode 10.0.0 Support: Character encoding, character type info, and
666 transliteration tables are all updated to Unicode 10.0.0, using
667 generator scripts contributed by Mike FABIAN (Red Hat).
668 These updates cause user visible changes, especially the changes in
669 wcwidth for many emoji characters cause problems when emoji sequences
670 are rendered with pango, see for example:
671 https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
673 * Collation of Hungarian has been overhauled and is now consistent with "The
674 Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
677 * Improvements to the DNS stub resolver, contributed by Florian Weimer:
679 - The GNU C Library will now detect when /etc/resolv.conf has been
680 modified and reload the changed configuration. The new resolver option
681 “no-reload” (RES_NORELOAD) disables this behavior.
683 - The GNU C Library now supports an arbitrary number of search domains
684 (configured using the “search” directive in /etc/resolv.conf);
685 previously, there was a hard limit of six domains. For backward
686 compatibility, applications that directly modify the ‘_res’ global
687 object are still limited to six search domains.
689 - When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
690 Library will now randomly pick a name server from the configuration as a
691 starting point. (Previously, the second name server was always used.)
693 * The tunables feature is now enabled by default. This allows users to tweak
694 behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
696 * New function reallocarray, which resizes an allocated block (like realloc)
697 to the product of two sizes, with a guaranteed clean failure upon integer
698 overflow in the multiplication. Originally from OpenBSD, contributed by
699 Dennis Wölfing and Rüdiger Sonderfeld.
701 * New wrappers for the Linux-specific system calls preadv2 and pwritev2.
702 These are extended versions of preadv and pwritev, respectively, taking an
703 additional flags argument. The set of supported flags depends on the
704 running kernel; full support currently requires kernel 4.7 or later.
706 * posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
707 create a new session ID for the spawned process. This feature is
708 scheduled to be added to the next major revision of POSIX; for the time
709 being, it is available under _GNU_SOURCE.
711 * errno.h is now safe to use from C-preprocessed assembly language on all
712 supported operating systems. In this context, it will only define the
713 Exxxx constants, as preprocessor macros expanding to integer literals.
715 * On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
716 128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
717 754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
718 Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
720 To compile programs that use this feature, the compiler must support
721 128-bit floating point with the type name _Float128 (as defined by TS
722 18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
723 C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
724 must be defined to make the new interfaces visible.
726 The new functions and macros correspond to those present for other
727 floating-point types (except for a few obsolescent interfaces not
728 supported for the new type), with F128 or f128 suffixes; for example,
729 strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
730 printf or scanf formats for the new type; the strfromf128 and strtof128
731 interfaces should be used instead.
733 Deprecated and removed features, and other changes affecting compatibility:
735 * The synchronization that pthread_spin_unlock performs has been changed to
736 now be equivalent to a C11 atomic store with release memory order to the
737 spin lock's memory location. Previously, several (but not all)
738 architectures used stronger synchronization (e.g., containing what is
739 often called a full barrier). This change can improve performance, but
740 may affect odd fringe uses of spin locks that depend on the previous
741 behavior (e.g., using spin locks as atomic variables to try to implement
742 Dekker's mutual exclusion algorithm).
744 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
747 * Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
748 will only be built and installed when the GNU C Library is configured with
749 --enable-obsolete-rpc. This allows alternative RPC implementations, such
750 as TIRPC or rpcsvc-proto, to be used.
752 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
753 libnss_compat, are deprecated, and will not be built or installed by
756 The NIS(+) support library, libnsl, is also deprecated. By default, a
757 compatibility shared library will be built and installed, but not headers
758 or development libraries. Only a few NIS-related programs require this
759 library. (In particular, the GNU C Library has never required programs
760 that use 'gethostbyname' to be linked with libnsl.)
762 Replacement implementations based on TIRPC, which additionally support
763 IPv6, are available from <https://github.com/thkukuk/>. The configure
764 option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
765 name service modules, to be built and installed.
767 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
768 support is enabled, the configured recursive resolver must support EDNS.
769 (Responding to EDNS-enabled queries with responses which are not
770 EDNS-enabled is fine, but FORMERR responses are not.)
772 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
773 servers have not supported this opcode for a long time.
775 * The _res_opcodes variable has been removed from libresolv. It had been
776 exported by accident.
778 * <string.h> no longer includes inline versions of any string functions,
779 as this kind of optimization is better done by the compiler. The macros
780 __USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
782 * The nonstandard header <xlocale.h> has been removed. Most programs should
783 use <locale.h> instead. If you have a specific need for the definition of
784 locale_t with no other declarations, please contact
785 libc-alpha@sourceware.org and explain.
787 * The obsolete header <sys/ultrasound.h> has been removed.
789 * The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
791 * The obsolete function cfree has been removed. Applications should use
794 * The stack_t type no longer has the name struct sigaltstack. This changes
795 the C++ name mangling for interfaces involving this type.
797 * The ucontext_t type no longer has the name struct ucontext. This changes
798 the C++ name mangling for interfaces involving this type.
800 * On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
801 the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
802 longer has the name struct mcontext. On SPARC GNU/Linux, the struct
803 mc_fq, struct rwindow, struct fpq and struct fq types are no longer
804 defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
805 mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
806 fpregset_t type no longer has the name struct fpu. This changes the C++
807 name mangling for interfaces involving those types.
809 * On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
810 synced with the kernel:
812 - PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
813 are not supported on this architecture and have been removed.
815 - PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
816 PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
817 PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
819 Programs that assume the GET/SETREGS ptrace requests are universally
820 available will now fail to build, instead of malfunctioning at runtime.
822 Changes to build and runtime requirements:
824 * Linux kernel 3.2 or later is required at runtime, on all architectures
825 supported by that kernel. (This is a change from version 2.25 only for
828 * GNU Binutils 2.25 or later is now required to build the GNU C Library.
830 * On most architectures, GCC 4.9 or later is required to build the GNU C
831 Library. On powerpc64le, GCC 6.2 or later is required.
833 Older GCC versions and non-GNU compilers are still supported when
834 compiling programs that use the GNU C Library. (We do not know exactly
835 how old, and some GNU extensions to C may be _de facto_ required. If you
836 are interested in helping us make this statement less vague, please
837 contact libc-alpha@sourceware.org.)
839 Security related changes:
841 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
842 to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
844 * LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
845 mode to guard against local privilege escalation attacks (CVE-2017-1000366).
847 * Avoid printing a backtrace from the __stack_chk_fail function since it is
848 called on a corrupt stack and a backtrace is unreliable on a corrupt stack
851 * A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
852 fixed (CVE-2017-12133).
854 The following bugs are resolved with this release:
856 [984] network: Respond to changed resolv.conf in gethostbyname
857 [5010] network: sunrpc service cleanup causes unwanted port mapper traffic
858 [12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
860 [12189] libc: __stack_chk_fail should not attempt a backtrace
862 [14096] time: Race condition on timezone/tst-timezone.out
863 [14172] localedata: az_IR: new locale
864 [14995] build: glibc fails to build if gold is the default linker, even if
866 [15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
867 [16637] network: inet_pton function is accepting IPv6 with bad format
868 [16640] string: string/strtok.c: undefined behaviour inconsistent between
869 x86 and other generic code
870 [16875] localedata: ko_KR: fix lang_name
871 [17225] localedata: ar_SY: localized month names for May and June are
873 [17297] localedata: da_DK: wrong date_fmt string
874 [18907] stdio: Incorrect order of __wur __THROW in <printf.h>
875 [18934] localedata: hu_HU: collate: fix multiple bugs and add tests
876 [18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
877 [19066] localedata: ar_SA abbreviated day and month names are in English
878 [19569] network: resolv: Support an arbitrary number of search domains
879 [19570] network: Implement random DNS server selection in the stub
881 [19838] locale: localedef fails on PA-RISC
882 [19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
883 order of 0D36 and 0D37
884 [19922] localedata: iso14651_t1_common: Define collation for Malayalam
886 [20098] libc: FAIL: debug/backtrace-tst on hppa
887 [20257] network: sunrpc: clntudp_call does not enforce timeout when
889 [20275] localedata: locale day/abday/mon/abmon should not have trailing
891 [20313] localedata: Update locale data to Unicode 9.0
892 [20424] manual: Document how to provide a malloc replacement
893 [20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
895 [20686] locale: Add el_GR@euro to SUPPORTED.
896 [20831] dynamic-link: _dl_map_segments does not test for __mprotect
897 failures consistently
898 [21015] dynamic-link: Document and fix --enable-bind-now
899 [21016] nptl: pthread_cond support is broken on hppa
900 [21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
901 frame-pointer on i386
902 [21049] libc: segfault in longjmp_chk() due to clobbered processor
904 [21075] libc: unused assigment to %g4 in sparc/sparc{64,32}/clone.S
905 [21088] libc: Build fails with --enable-static-nss
906 [21094] math: cosf(1.57079697) has 3 ulp error on targets where the
907 generic c code is used
908 [21109] libc: Tunables broken on big-endian
909 [21112] math: powf has large ulp errors with base close to 1 and exponent
911 [21115] network: sunrpc: Use-after-free in error path in clntudp_call
913 [21120] malloc: glibc malloc is incompatible with GCC 7
914 [21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
916 [21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
917 (-0.0) when linking with -lieee
918 [21171] math: log10, log2 and lgamma return incorrect results
919 [21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
920 [21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
921 [21207] localedata: ce_RU: update weekdays from CLDR
922 [21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
923 [21217] localedata: Update months from CLDR-31
924 [21232] libc: miss posix_fadvise64 on MIPS64 when static linking
925 [21243] libc: support_delete_temp_file should issue warning for failed
927 [21244] libc: support resolv_test_start() socket fd close should be
929 [21253] libc: localedef randomly segfaults when using -fstack-check due to
930 new posix_spawn implementation
931 [21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
932 leads to lower CPU frequency
933 [21259] libc: [alpha] termios.h missing IXANY for POSIX
934 [21261] libc: [sparc64] bits/setjmp.h namespace
935 [21267] network: [mips] bits/socket.h IOC* namespace
936 [21268] libc: [alpha] termios.h NL2, NL3 namespace
937 [21270] libc: mmap64 silently truncates large offset values
938 [21275] libc: posix_spawn always crashes on ia64 now
939 [21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
940 [21280] math: [powerpc] logbl for POWER7 return incorrect results
941 [21289] libc: Incorrect declaration for 32-bit platforms with
942 _FILE_OFFSET_BITS=64 causes build error
943 [21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
944 not support gethostbyname4_r
945 [21298] nptl: rwlock can deadlock on frequent reader/writer phase
947 [21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
949 [21340] libc: Support POSIX_SPAWN_SETSID
950 [21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
951 [21359] network: ns_name_pack needs additional byte in destination buffer
952 [21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
953 against fragmentation attacks (CVE-2017-12132)
954 [21369] network: resolv: Remove EDNS fallback
955 [21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
957 [21386] nptl: Assertion in fork for distinct parent PID is incorrect
958 [21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
959 [21393] stdio: Missing dup3 error check in freopen, freopen64
960 [21396] libc: Use AVX2 memcpy/memset on Skylake server
961 [21399] localedata: Bad description for U00EC in
962 localedata/charmaps/CP1254
963 [21411] malloc: realloc documentation error
964 [21426] network: sys/socket.h uio.h namespace
965 [21428] libc: [aarch64] tst-backtrace5 testsuite failure
966 [21445] libc: signal.h bsd_signal namespace
967 [21455] network: Network headers stdint.h namespace
968 [21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
970 [21475] network: resolv: Overlong search path is truncated mid-label
971 [21511] libc: sigstack namespace
972 [21512] libc: clone() ends up calling exit_group() through _exit() wrapper
973 [21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
974 bits/syscall.h: No such file or directory
975 [21517] libc: struct sigaltstack namespace
976 [21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
977 [21533] localedata: Update locale data to Unicode 10.0
979 ../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
980 junk at end of line, first unrecognized character is `@'
981 [21538] libc: SIG_HOLD missing for XPG4
982 [21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
983 request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
984 [21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
985 [21543] libc: sigevent namespace
986 [21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
987 size for general purpose registers in mcontext_t structure
988 [21550] libc: sigwait namespace
989 [21552] libc: XPG4 bsd_signal namespace
990 [21554] libc: sigpause namespace
991 [21560] libc: sys/wait.h signal.h namespace
992 [21561] libc: waitid namespace
993 [21573] nptl: GCC 7: /usr/bin/install: cannot remove
994 '/usr/include/stdlib.h': Permission denied
995 [21575] libc: sys/wait.h missing struct rusage definition
996 [21584] libc: sigaltstack etc namespace
997 [21597] libc: siginterrupt namespace
998 [21607] math: hppa: FAIL: math/test-tgmath
999 [21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
1001 [21622] libc: [tile] missing SA_* for POSIX.1:2008
1002 [21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
1003 stack and heap (CVE-2017-1000366)
1004 [21625] libc: wait3 namespace
1005 [21654] nss: Incorrect pointer alignment in NSS group merge result
1007 [21657] network: Parse interface zone id for node-local multicast
1008 [21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
1010 [21666] libc: .symver is used on common symbol
1011 [21668] network: resolv: res_init cross-thread broadcast introduces race
1013 [21687] math: tgmath.h totalorder, totalordermag return type
1014 [21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
1016 [21696] libc: Incorrect assumption of of __cpu_mask in
1017 posix/sched_cpucount.c
1018 [21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
1019 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
1021 [21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
1022 leading to relocation crash
1023 [21709] libc: resolv_conf.c:552: update_from_conf: Assertion
1024 `resolv_conf_matches (resp, conf)' failed.
1025 [21710] localedata: Added Samoan language locale for Samoa
1026 [21711] localedata: Pashto yesstr/nostr locale are missing
1027 [21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
1028 __have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
1029 [21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
1030 [21723] localedata: yesstr/nostr missing for Chinese language locale
1031 [21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
1033 [21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
1035 [21728] localedata: New Locale for Tongan language
1036 [21729] localedata: incorrect LC_NAME fields for hi_IN
1037 [21733] localedata: yesstr and nostr are missing for zh_HK
1038 [21734] localedata: Missing yesstr and nostr are for kw_GB
1039 [21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
1040 [21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
1041 [21742] libc: _dl_num_cache_relocations is undefined in libc.a
1042 [21743] localedata: ks_IN@devanagari: abday strings mismatch the day
1044 [21744] libc: Tests failing on --enable-tunables --enable-stack-
1046 [21749] localedata: Wrong abbreviated day name (“abday”) for
1048 [21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
1049 [21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
1050 [21759] localedata: missing yesstr and nostr for Tigrinya
1051 [21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
1052 [21766] localedata: Wrong LC_MESSAGES for om_ET Locale
1053 [21767] localedata: Missing Bislama locales
1054 [21768] localedata: Missing yesstr and nostr for aa_ET
1055 [21770] localedata: Missing Field in li_NL
1056 [21778] nptl: Robust mutex may deadlock
1057 [21779] libc: MicroBlaze segfaults when loading libpthread
1058 [21783] localedata: Fix int_select international_call_prefixes
1059 [21784] localedata: Inconsistency in country_isbn
1060 [21788] localedata: Missing Country Postal Abbreviations
1061 [21794] localedata: Added-country_isbn-for-Italy
1062 [21795] localedata: Add/Fix country_isbn for France
1063 [21796] localedata: Added country_isbn for Republic of Korea
1064 [21797] localedata: Fix inconsistency in country_isbn and missing prefixes
1065 [21799] localedata: Added int_select international_call_prefixes
1066 [21801] localedata: Added int_select international_call_prefixes
1067 [21804] nptl: Double semicolon in thread-shared-types.h
1068 [21807] localedata: LC_ADDRESS fix for pap_CW
1069 [21808] localedata: Fix LC_ADDRESS for pap_AW
1070 [21821] localedata: Added country_name in mai_IN
1071 [21822] localedata: Fix LC_TIME for mai_IN
1072 [21823] localedata: missing yesstr, nostr for sa_IN
1073 [21825] localedata: Fix name_mrs for mag_IN
1074 [21828] localedata: 2.26 changelog should mention user visible changes
1076 [21835] localedata: Added Maithili language locale for Nepal
1077 [21838] localedata: Removed redundant data for the_NP
1078 [21839] localedata: Fix LC_MONETARY for ta_LK
1079 [21844] localedata: Fix Latin characters and Months Sequence.
1080 [21848] localedata: Fix mai_NP Title Name
1085 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
1086 24731-2:2010, is supported to enable declarations of functions from that
1087 TR. Note that not all functions from that TR are supported by the GNU C
1090 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
1091 18661-1:2014, is supported to enable declarations of functions and macros
1092 from that TS. Note that not all features from that TS are supported by
1095 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
1096 18661-4:2015, is supported to enable declarations of functions and macros
1097 from that TS. Note that most features from that TS are not supported by
1100 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
1101 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
1102 Since the GNU C Library defaults to a much newer revision of POSIX, this
1103 will only affect programs that specifically request an old conformance
1104 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
1105 see a change in the visible declarations, but a program compiled with
1106 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
1109 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
1110 defined by all multithreaded code, but glibc has not required this for
1113 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
1114 means that in a future release, the macros “major”, “minor”, and “makedev”
1115 will only be available from <sys/sysmacros.h>.
1117 These macros are not part of POSIX nor XSI, and their names frequently
1118 collide with user code; see for instance glibc bug 19239 and Red Hat bug
1119 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
1120 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
1123 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
1124 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
1125 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
1127 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
1128 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
1129 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
1130 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
1131 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
1132 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
1133 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
1134 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
1135 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
1136 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
1137 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
1140 * New <math.h> features are added from TS 18661-1:2014:
1142 - Signaling NaN macros: SNANF, SNAN, SNANL.
1144 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
1145 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
1146 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
1148 - llogb functions: the llogb, llogbf and llogbl functions, and the
1149 FP_LLOGB0 and FP_LLOGBNAN macros.
1151 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
1154 - Comparison macros: iseqsig.
1156 - Classification macros: iscanonical, issubnormal, iszero.
1158 - Total order functions: totalorder, totalorderf, totalorderl,
1159 totalordermag, totalordermagf, totalordermagl.
1161 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
1163 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
1164 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
1166 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
1167 are added to libc. They convert a floating-point number into string.
1169 * Most of glibc can now be built with the stack smashing protector enabled.
1170 It is recommended to build glibc with --enable-stack-protector=strong.
1171 Implemented by Nick Alcock (Oracle).
1173 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
1174 intended to be used instead of memset() to erase sensitive data after use;
1175 the compiler will not optimize out calls to explicit_bzero even if they
1176 are "unnecessary" (in the sense that no _correct_ program can observe the
1177 effects of the memory clear).
1179 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
1180 to float instead of double. This does not affect the ABI of any libraries
1181 that are part of the GNU C Library, but may affect the ABI of other
1182 libraries that use this type in their interfaces.
1184 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
1185 float_t and double_t types are now defined to long double instead of float
1186 and double. These options are not the default, and this does not affect
1187 the ABI of any libraries that are part of the GNU C Library, but it may
1188 affect the ABI of other libraries that use this type in their interfaces,
1189 if they are compiled or used with those options.
1191 * The getentropy and getrandom functions, and the <sys/random.h> header file
1194 * The buffer size for byte-oriented stdio streams is now limited to 8192
1195 bytes by default. Previously, on Linux, the default buffer size on most
1196 file systems was 4096 bytes (and thus remains unchanged), except on
1197 network file systems, where the buffer size was unpredictable and could be
1198 as large as several megabytes.
1200 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
1201 for the Linux quota interface which predates kernel version 2.4.22 has
1204 * The malloc_get_state and malloc_set_state functions have been removed.
1205 Already-existing binaries that dynamically link to these functions will
1206 get a hidden implementation in which malloc_get_state is a stub. As far
1207 as we know, these functions are used only by GNU Emacs and this change
1208 will not adversely affect already-built Emacs executables. Any undumped
1209 Emacs executables, which normally exist only during an Emacs build, should
1210 be rebuilt by re-running “./configure; make” in the Emacs build tree.
1212 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
1213 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
1214 “no-ip6-dotint” had already been the default, and support for the
1215 “ip6-dotint” option was removed from the Internet in 2006.
1217 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
1218 flag from <resolv.h> have been removed. The option relied on a
1219 backwards-incompatible DNS extension which was never deployed on the
1222 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
1223 RES_BLAST defined in the <resolv.h> header file have been deprecated.
1224 They were already unimplemented.
1226 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
1227 _res.flags are deprecated. The flag was standardized in RFC 2133, but
1228 removed again from the IETF name lookup interface specification in RFC
1229 2553. Applications should use getaddrinfo instead.
1231 * DNSSEC-related declarations and definitions have been removed from the
1232 <arpa/nameser.h> header file, and libresolv will no longer attempt to
1233 decode the data part of DNSSEC record types. Previous versions of glibc
1234 only implemented minimal support for the previous version of DNSSEC, which
1235 is incompatible with the currently deployed version.
1237 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
1238 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
1239 <arpa/nameser.h> header file because the distinction between RR types and
1240 meta-RR types is not officially standardized, subject to revision, and
1241 thus not suitable for encoding in a macro.
1243 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
1244 and rhook members of the res_state type in <resolv.h> have been removed.
1245 The glibc stub resolver did not support these hooks, but the header file
1246 did not reflect that.
1248 * For multi-arch support it is recommended to use a GCC which has
1249 been built with support for GNU indirect functions. This ensures
1250 that correct debugging information is generated for functions
1251 selected by IFUNC resolvers. This support can either be enabled by
1252 configuring GCC with '--enable-gnu-indirect-function', or by
1253 enabling it by default by setting 'default_gnu_indirect_function'
1254 variable for a particular architecture in the GCC source file
1257 * GDB pretty printers have been added for mutex and condition variable
1258 structures in POSIX Threads. When installed and loaded in gdb these pretty
1259 printers show various pthread variables in human-readable form when read
1260 using the 'print' or 'display' commands in gdb.
1262 * Tunables feature added to allow tweaking of the runtime for an application
1263 program. This feature can be enabled with the '--enable-tunables' configure
1264 flag. The GNU C Library manual has details on usage and README.tunables has
1265 instructions on adding new tunables to the library.
1267 * A new version of condition variables functions have been implemented in
1268 the NPTL implementation of POSIX Threads to provide stronger ordering
1271 * A new version of pthread_rwlock functions have been implemented to use a more
1272 scalable algorithm primarily through not using a critical section anymore to
1275 Security related changes:
1277 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
1278 have been created with makecontext could fail to terminate due to a
1279 missing .cantunwind annotation. This has been observed to lead to a hang
1280 (denial of service) in some Go applications compiled with gccgo. Reported
1281 by Andreas Schwab. (CVE-2016-6323)
1283 * The DNS stub resolver functions would crash due to a NULL pointer
1284 dereference when processing a query with a valid DNS question type which
1285 was used internally in the implementation. The stub resolver now uses a
1286 question type which is outside the range of valid question type values.
1289 The following bugs are resolved with this release:
1291 [4099] stdio: Overly agressive caching by stream i/o functions.
1292 [7065] build: Support building glibc with -fstack-protector or -fstack-
1294 [9842] localedata: en_CA: incorrect date format
1295 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
1296 before it started waiting
1297 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
1298 [15765] nptl: sem_open is wrongly a cancellation point
1299 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
1300 [16458] libc: endian.h and netinet/in.h byte order macros return values of
1302 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
1303 library linked with pthread
1304 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
1305 "FIXME: Ingo" issue)
1306 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
1307 [17252] libc: getrandom and getentropy syscall
1308 [17730] malloc: thread-local storage is sometimes improperly free()'d
1309 after being __libc_memalign()'d
1310 [18241] stdio: failed fseek on memstream does not set errno and can fail
1312 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
1314 [18463] nptl: pthread_cond_broadcast issue when surrounded by
1315 PTHREAD_PRIO_INHERIT mutex on ARM
1316 [18784] network: res_query and related function crash for special record
1317 type queries (CVE-2015-5180)
1318 [19380] math: strtod does not raise "inexact"
1319 [19387] string: Integer overflow in memchr
1320 [19390] string: Integer overflow in strncat
1321 [19398] build: linknamespace tests fail with massively parallel build
1322 [19402] nptl: Deadlock with robust shared mutex and asynchronous
1324 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
1325 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
1326 [19514] libc: [PATCH] Fix spelling errors in spelling
1327 "implement"/"implementation" in several places
1328 [19582] network: Deprecate RES_USE_INET6
1329 [19673] manual: clog10 docs appear to be erroneous
1330 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
1331 causes a segmentation fault
1332 [19826] libc: invalid pointer returned from __tls_get_addr with static
1334 [20016] network: resolv: Remove hooks support from the API
1335 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
1337 [20033] math: [x86_64] vectorized math function don't call the __finite
1339 [20116] nptl: use after free in pthread_create
1340 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
1341 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
1343 [20311] nptl: please install proc_service.h
1344 [20366] libc: Compilation errors in installed headers in strict-compliance
1346 [20370] malloc: malloc: Arena free list management is still racy
1347 (incorrect fix in bug 19243)
1348 [20386] libc: assert (X = 0) does not result in GCC warning
1349 [20432] malloc: malloc: Minimize interface required for interposition
1350 [20435] libc: Missing unwind info in __startcontext causes infinite loop
1351 in _Unwind_Backtrace (CVE-2016-6323)
1352 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
1353 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
1355 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
1356 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
1357 [20477] network: resolv: incorrect double-checked locking related to
1359 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
1361 [20495] math: x86_64 performance degradation due to AVX/SSE transition
1363 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
1364 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
1365 cause transition penalty
1366 [20517] math: sparcv9 missing fdiml compat symbol
1367 [20524] manual: strverscmp is inconsistent
1368 [20525] libc: <sys/quota.h> should be based on kernel headers
1369 [20539] math: GCC 7 -static -lm fails to link at -O3
1370 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
1372 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
1374 [20591] network: Remove obsolete DNSSEC support
1375 [20592] network: DNS resource record type classification macros in
1376 <arpa/nameser.h> are incorrect
1377 [20593] network: Update DNS RR type definitions
1378 [20611] network: getaddrinfo accepts invalid numeric scope IDs
1379 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
1381 [20629] network: libresolv: Remove support for bitstring labels
1383 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
1384 assertion: "maxidx >= 2"
1385 [20660] math: [arm] Use VSQRT
1386 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
1387 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
1388 [20689] libc: Test for FMA should also check for AVX.
1389 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
1390 [20715] math: iszero macro breaks existing code
1391 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
1392 [20728] libc: powerpc: Missing TOC stub in clone
1393 [20729] build: glibc-2.24 fails to build for i486 with -Os
1394 [20750] build: Build fails with default PIE enabled gcc-6.x
1395 [20768] math: [alpha] sqrt fegetenv namespace
1396 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
1398 [20787] math: float_t is defined as float incorrectly on x86_64 even if
1399 __FLT_EVAL_METHOD__ is 2
1400 [20790] network: rpcgen buffer overrun in get_prog_declaration
1401 [20822] nptl: race condition in __lll_unlock_elision on powerpc
1402 [20829] libc: crypt snprintf namespace
1403 [20847] libc: tst-vfork3 failure
1404 [20855] math: Default bits/mathdef.h has inappropriate float_t
1405 [20859] math: [sh4] FP_ILOGB0 invalid
1406 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
1407 U+20AC), not same as GBK
1408 [20915] dynamic-link: global-dynamic TLS broken on aarch64
1409 [20916] math: pow handling of sNaN arguments
1410 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
1411 [20919] math: Bad pow (qNaN, 0) result with -lieee
1412 [20940] math: hypot sNaN handling
1413 [20947] math: fmax, fmin sNaN handling
1414 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
1415 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
1417 [20971] string: powerpc64/power7 memchr overflows internal pointer check
1418 [20973] nptl: robust mutexes: Lost wake-ups
1419 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
1420 [20978] nis: strlen on null pointer in nss_nisplus
1421 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
1423 [21014] string: i686 memchr overflows internal pointer check
1424 [21019] libc: [mips] n32 lseek incorrect on overflow
1425 [21022] libc: [microblaze] __backtrace get_frame_size namespace
1426 [21026] libc: [MIPS] readahead syscall is broken on n64
1427 [21028] math: Fallback fesetexceptflag should always succeed
1428 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
1429 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
1431 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
1432 [21061] librt: [microblaze] librt lost clock_* exports
1433 [21073] libc: tunables: insecure environment variables passed to
1434 subprocesses with AT_SECURE
1435 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
1439 * The minimum Linux kernel version that this version of the GNU C Library
1440 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
1441 kernel version 2.6.32 or later suffices (on architectures that already
1442 required kernel versions more recent than 3.2, those requirements remain
1443 unchanged). Linux 3.2 or later kernel headers are required on all
1446 * The pap_AN locale has been deleted. This has been deprecated for a long
1447 time. It has been replaced by pap_AW & pap_CW, both of which have long
1448 been included in previous releases.
1450 * The readdir_r and readdir64_r functions have been deprecated. It is
1451 recommended to use readdir and readdir64 instead.
1453 * The type “union wait” has been removed. It was deprecated in the early
1454 1990s and never part of POSIX. Application code should use the int type
1455 instead of “union wait”.
1457 * A new NSS action is added to facilitate large distributed system
1458 administration. The action, MERGE, allows remote user stores like LDAP
1459 to be merged into local user stores like /etc/groups in order to provide
1460 easy to use, updated, and managed sets of merged credentials. The new
1461 action can be used by configuring it in /etc/nsswitch.conf:
1462 group: files [SUCCESS=merge] nis
1463 Implemented by Stephen Gallagher (Red Hat).
1465 * The deprecated __malloc_initialize_hook variable has been removed from the
1468 * The long unused localedef --old-style option has been removed. It hasn't
1469 done anything in over 16 years. Scripts using this option can safely
1472 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
1473 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
1474 return the next representable value in the direction of positive infinity
1475 and the nextdown functions return the next representable value in the
1476 direction of negative infinity. These are currently enabled as GNU
1479 Security related changes:
1481 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
1482 could result in a stack overflow when getnetbyname was called with an
1483 overly long name. (CVE-2016-3075)
1485 * Previously, getaddrinfo copied large amounts of address data to the stack,
1486 even after the fix for CVE-2013-4458 has been applied, potentially
1487 resulting in a stack overflow. getaddrinfo now uses a heap allocation
1488 instead. Reported by Michael Petlan. (CVE-2016-3706)
1490 * The glob function suffered from a stack-based buffer overflow when it was
1491 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
1492 Reported by Alexander Cherepanov. (CVE-2016-1234)
1494 * The Sun RPC UDP client could exhaust all available stack space when
1495 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
1496 alloca plugin for GCC. (CVE-2016-4429)
1498 * The IPv6 name server management code in libresolv could result in a memory
1499 leak for each thread which is created, performs a failing naming lookup,
1500 and exits. Over time, this could result in a denial of service due to
1501 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
1503 The following bugs are resolved with this release:
1505 [1170] localedata: ne_NP: update Nepali locale definition file
1506 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
1508 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
1509 [6796] math: fdim() does not set errno on overflow
1510 [10354] libc: posix_spawn should use vfork() in more cases than presently
1511 [11213] localedata: localedata: add copyright disclaimer to locale files
1512 [12143] localedata: chr_US: new Cherokee locale
1513 [12450] localedata: sgs_LT: new locale
1514 [12676] localedata: ln_CD: new locale
1515 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
1517 [13304] math: fma, fmaf, fmal produce wrong results
1518 [14259] build: --localedir arg to configure is ignored
1519 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
1520 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
1521 [14934] localedata: es_CL: wrong first weekday chilean locale
1522 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
1524 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
1526 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
1527 [15368] nptl: raise() is not async-signal-safe
1528 [15479] math: ceil, floor, round and trunc raise inexact exception
1529 [15578] localedata: kk_KZ: various updates
1530 [16003] localedata: pap_AN: punt old locale
1531 [16137] localedata: iw_IL: punt old locale
1532 [16190] localedata: eo: new esperanto locale
1533 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
1534 [16742] malloc: race condition: pthread_atfork() called before first
1535 malloc() results in unexpected locking behaviour/deadlocks
1536 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
1538 [16983] localedata: postal_fmt does not allow %l and %n modifiers
1539 [17565] localedata: pt_PT: wrong (work-)week start
1540 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
1541 [17950] build: Build fails with -msse
1542 [18205] localedata: be_BY*: wrong first_weekday and first_workday
1543 [18433] libc: posix_spawn does not return correctly upon failure to
1545 [18453] localedata: charmaps/IBM875: incorrect codes
1546 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
1548 [18896] localedata: he_IL: improvements for currency
1549 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
1550 Romanian locale data
1551 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
1553 [19056] libc: Deprecate readdir_r
1554 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
1556 [19198] localedata: nl_NL: small improvements for Dutch locales
1557 [19257] network: Per-thread memory leak in __res_vinit with IPv6
1558 nameservers (CVE-2016-5417)
1559 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
1561 [19400] locale: Language missing in "iso-639.def", trivial fix in
1563 [19431] malloc: Deadlock between fflush, getdelim, and fork
1564 [19505] libc: Incorrect file descriptor validity checks in
1565 posix_spawn_file_actions_add{open,close,dup2}
1566 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
1567 when using RTLD_NEXT
1568 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
1569 `intl/{gettextP,loadinfo}.h'
1570 [19534] libc: execle, execlp may use malloc
1571 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
1572 [19573] network: res_nclose and __res_maybe_init disagree about name
1573 server initialization, breaking Hesiod
1574 [19575] localedata: Status of GB18030 tables
1575 [19581] localedata: sr_* date_fmt string contains additional newline
1576 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
1578 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
1579 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
1580 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
1581 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
1583 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
1585 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
1587 [19610] dynamic-link: ldconfig -X removes stale symbolic links
1588 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
1589 [19633] locale: strfmon_l applies global locale to number formatting
1590 [19642] network: Memory leak in getnameinfo
1591 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
1592 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
1594 [19654] math: [x86_64] Need testcase for BZ #19590 fix
1595 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
1597 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
1598 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
1600 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
1602 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
1604 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
1605 pointers and lengths in error-case.
1606 [19727] locale: Converting from/to UTF-xx with iconv() does not always
1607 report errors on UTF-16 surrogates values.
1608 [19755] nscd: nscd assertion failure in gc
1609 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
1610 [19759] libc: mempcpy shouldn't be inlined
1611 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
1612 [19765] libc: s390 needs an optimized mempcpy
1613 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
1614 NAME_MAX limit assumption (CVE-2016-1234)
1615 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
1616 [19787] network: Missing and incorrect truncation checks in getnameinfo
1617 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
1619 [19791] network: Assertion failure in res_query.c with un-connectable name
1621 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
1622 [19822] math: libm.so install clobbers old version
1623 [19825] network: resolv: send_vc can return uninitialized data in second
1624 response to getaddrinfo
1625 [19830] network: nss_dns: should check RDATA length against buffer length
1626 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
1627 confronted with A/AAAA records of invalid size
1628 [19837] nss: nss_db: No retries for some long lines with a larger buffer
1629 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
1630 [19853] stdio: Printing IBM long double in decimal with high precision is
1632 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
1633 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
1634 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
1636 [19865] network: Assertion failure or memory leak in
1637 _nss_dns_getcanonname_r
1638 [19868] network: nss_dns: netent code does not skip over non-PTR records
1639 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
1641 [19881] string: Improve x86-64 memset
1642 [19907] string: Incorrect memcpy tests
1643 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
1645 [19925] libc: termios.h XCASE namespace
1646 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
1647 [19929] libc: limits.h NL_NMAX namespace
1648 [19931] stdio: Memory leak in vfprintf
1649 [19957] libc: clone(CLONE_VM) access invalid parent memory
1650 [19963] localedata: en_IL: New locale
1651 [19989] stdio: stdio.h cuserid namespace
1652 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
1654 [19996] locale: langinfo.h nl_langinfo_l namespace
1655 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
1656 [20010] network: getaddrinfo: Stack overflow in hostent translation
1658 [20012] stdio: libio: fmemopen append mode failure
1659 [20014] stdio: stdio.h namespace for pre-threads POSIX
1660 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
1661 [20023] libc: fcntl.h timespec namespace
1662 [20024] math: [x86_64] vectorized sincos trashes the stack
1663 [20031] network: nss_hesiod: Heap overflow in get_txt_records
1664 [20041] time: sys/time.h timespec namespace
1665 [20043] libc: unistd.h missing cuserid for UNIX98 and before
1666 [20044] libc: unistd.h missing pthread_atfork for UNIX98
1667 [20051] libc: ttyslot in wrong header under wrong conditions
1668 [20054] libc: gethostname not declared for XPG4
1669 [20055] libc: termios.h missing tcgetsid for XPG4
1670 [20072] dynamic-link: x86 init_cpu_features is called twice in static
1672 [20073] libc: sys/stat.h fchmod namespace
1673 [20074] libc: stdlib.h rand_r namespace
1674 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
1675 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
1677 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
1678 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
1680 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
1681 [20119] libc: Wrong mask for processors level type from CPUID
1682 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
1683 AS not supporting AVX512
1684 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
1686 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
1687 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
1689 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
1690 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
1691 [20178] libc: posix_spawn{p} should not call exit
1692 [20191] stdio: libio: vtables hardening
1693 [20195] string: FMA4 detection requires CPUID execution with register
1695 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
1696 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
1698 [20212] math: acos (sNaN) returns sNaN
1699 [20213] math: asin (sNaN) returns sNaN
1700 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
1701 [20218] math: [i386] asinhl (sNaN) returns sNaN
1702 [20219] math: [i386] atanhl (sNaN) returns sNaN
1703 [20222] stdio: fopencookie: Mangle function pointers
1704 [20224] math: [i386] cbrtl (sNaN) returns sNaN
1705 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
1706 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
1708 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
1709 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
1710 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
1711 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
1712 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
1713 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
1714 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
1715 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
1716 [20240] math: modf (sNaN) returns sNaN
1717 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
1718 [20250] math: frexp (sNaN) returns sNaN
1719 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
1720 [20255] math: [i386] fdim, fdimf return with excess range and precision /
1722 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
1723 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
1724 subscript is below array bounds [-Werror=array-bounds]
1725 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
1726 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
1728 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
1729 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
1731 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
1732 "invalid" exceptions
1733 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
1734 [20316] localedata: id_ID: Februari instead of Pebruari
1735 [20327] string: POWER8 strcasecmp returns incorrect result
1736 [20347] math: Failure: Test: j0_downward (0xap+0)
1737 [20348] libc: FAIL: misc/tst-preadvwritev64
1738 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
1739 [20350] libc: There is no test for p{read,write}64
1740 [20357] math: Incorrect cos result for 1.5174239687223976
1741 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
1745 * Unicode 8.0.0 Support: Character encoding, character type info, and
1746 transliteration tables are all updated to Unicode 8.0.0, using new
1747 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
1748 These updates cause user visible changes, such as the fixes for bugs
1749 89, 16061, and 18568.
1751 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
1752 kernel-internal CPU set size. This means that requests that change the
1753 CPU affinity which failed before (for example, an all-ones CPU mask) will
1754 now succeed. Applications that need to determine the effective CPU
1755 affinities need to call sched_getaffinity or pthread_getaffinity_np after
1756 setting it because the kernel can adjust it (and the previous size check
1757 would not detect this in the majority of cases).
1759 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
1760 the following new symbols are used: fts64_children, fts64_close,
1761 fts64_open, fts64_read and fts64_set.
1763 * getaddrinfo now detects certain invalid responses on an internal netlink
1764 socket. If such responses are received, an affected process will
1765 terminate with an error message of "Unexpected error <number> on netlink
1766 descriptor <number>" or "Unexpected netlink response of size <number> on
1767 descriptor <number>". The most likely cause for these errors is a
1768 multi-threaded application which erroneously closes and reuses the netlink
1769 file descriptor while it is used by getaddrinfo.
1771 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
1772 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
1773 unnecessary serialization of memory allocation requests across threads.
1774 The defect is now corrected. Users should see a substantial increase in
1775 the concurent throughput of allocation requests for applications which
1776 trigger this bug. Affected applications typically create and
1777 destroy threads frequently. (Bug 19048 was reported and analyzed by
1780 * There is now a --disable-timezone-tools configure option for disabling the
1781 building and installing of the timezone related utilities (zic, zdump, and
1782 tzselect). This is useful for people who build the timezone data and code
1783 independent of the GNU C Library.
1785 * The obsolete header <regexp.h> has been removed. Programs that require
1786 this header must be updated to use <regex.h> instead.
1788 * The obsolete functions bdflush, create_module, get_kernel_syms,
1789 query_module and uselib are no longer available to newly linked binaries;
1790 the header <sys/kdaemon.h> has been removed. These functions and header
1791 were specific to systems using the Linux kernel and could not usefully be
1792 used with the GNU C Library on systems with version 2.6 or later of the
1795 * Optimized string, wcsmbs and memory functions for IBM z13.
1796 Implemented by Stefan Liebler.
1798 * Newly linked programs that define a variable called signgam will no longer
1799 have it set by the lgamma, lgammaf and lgammal functions. Programs that
1800 require signgam to be set by those functions must ensure that they use the
1801 variable provided by the GNU C Library and declared in <math.h>, without
1802 defining their own copy.
1804 * The minimum GCC version that can be used to build this version of the GNU
1805 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
1806 still be used to compile programs using the GNU C Library.
1808 Security related changes:
1810 * An out-of-bounds value in a broken-out struct tm argument to strftime no
1811 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
1813 * The LD_POINTER_GUARD environment variable can no longer be used to disable
1814 the pointer guard feature. It is always enabled. Previously,
1815 LD_POINTER_GUARD could be used to disable security hardening in binaries
1816 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
1819 * An integer overflow in hcreate and hcreate_r could lead to an
1820 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
1822 * The catopen function no longer has unbounded stack usage. Reported by
1823 Max. (CVE-2015-8779)
1825 * The nan, nanf and nanl functions no longer have unbounded stack usage
1826 depending on the length of the string passed as an argument to the
1827 functions. Reported by Joseph Myers. (CVE-2014-9761)
1829 * A stack-based buffer overflow was found in libresolv when invoked from
1830 libnss_dns, allowing specially crafted DNS responses to seize control
1831 of execution flow in the DNS client. The buffer overflow occurs in
1832 the functions send_dg (send datagram) and send_vc (send TCP) for the
1833 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
1834 family. The use of AF_UNSPEC triggers the low-level resolver code to
1835 send out two parallel queries for A and AAAA. A mismanagement of the
1836 buffers used for those queries could result in the response of a query
1837 writing beyond the alloca allocated buffer created by
1838 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
1839 the overflow. Thanks to the Google Security Team and Red Hat for
1840 reporting the security impact of this issue, and Robert Holiday of
1841 Ciena for reporting the related bug 18665. (CVE-2015-7547)
1843 The following bugs are resolved with this release:
1845 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
1846 [887] math: Math library function "logb" and "nextafter" inconsistent
1847 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
1848 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
1849 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
1850 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
1852 [4404] localedata: German translation of "Alarm clock" is misleading
1853 [6799] math: nextafter() and nexttoward() doen't set errno on
1854 overflow/underflow errors
1855 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
1857 [10432] nis: _nss_nis_setnetgrent assertion failure
1858 [11460] libc: fts has no LFS support
1859 [12926] network: getaddrinfo()/make_request() may spin forever
1860 [13065] nptl: Race condition in pthread barriers
1861 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
1862 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
1864 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
1865 [14912] libc: Rename non-installed bits/*.h headers
1866 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
1867 [15367] math: Let gcc use __builtin_isinf
1868 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
1869 [15421] math: lgamma wrongly sets signgam for ISO C
1870 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
1871 FE_INVALID with argument out of range
1872 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
1874 [15786] dynamic-link: ifunc resolver functions can smash function
1876 [15918] math: Unnecessary check for equality in hypotf()
1877 [16061] localedata: Review / update transliteration data
1878 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
1880 [16141] time: strptime %z offset restriction
1881 [16171] math: drem should be alias of remainder
1882 [16296] math: fegetround is pure?
1883 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
1884 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
1886 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
1887 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
1889 [16422] math: [powerpc] math-float, math-double failing llrint tests with
1890 "Exception "Inexact" set" on ppc32
1891 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
1892 [16517] math: Missing underflow exception from tanf/tan/tanl
1893 [16519] math: Missing underflow exception from sinhf
1894 [16520] math: Missing underflow exception from tanhf
1895 [16521] math: Missing underflow exception from exp2
1896 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
1898 [16734] stdio: fopen calls mmap to allocate its buffer
1899 [16961] math: nan function incorrect handling of bad sequences
1900 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
1901 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
1902 [16985] locale: localedef: confusing error message when opening output
1904 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
1905 [17197] locale: Redundant shift character in iconv conversion output at
1907 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
1908 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
1909 [17250] dynamic-link: static linking breaks nss loading
1910 (getaddrinfo/getpwnam/etc...)
1911 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
1913 [17441] math: isnan() should use __builtin_isnan() in GCC
1914 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
1915 (related to lock elision)
1916 [17787] manual: Exponent on page 324 of the PDF ends prematurely
1917 [17886] time: strptime should be able to parse "Z" as a timezone with %z
1918 [17887] time: strptime should be able to parse "+01:00" style timezones
1919 [17905] libc: catopen() Multiple unbounded stack allocations
1921 [18084] libc: backtrace (..., 0) dumps core on x86
1922 [18086] libc: nice() sets errno to 0 on success
1923 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
1924 is too large (CVE-2015-8778)
1925 [18251] dynamic-link: SONAME missing when audit modules provides path
1926 [18265] libc: add attributes for wchar string and memory functions
1927 [18370] math: csqrt missing underflows
1928 [18421] libc: [hppa] read-only segment has dynamic relocations
1929 [18472] libc: Obsolete syscall wrappers should be compat symbols
1930 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
1931 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
1932 [18525] localedata: Remove locale timezone information
1933 [18560] libc: [powerpc] spurious bits/ipc.h definitions
1934 [18568] localedata: Update locale data to Unicode 8.0
1935 [18589] locale: sort-test.sh fails at random
1936 [18595] math: ctan, ctanh missing underflows
1937 [18604] libc: assert macro-expands its argument
1938 [18610] math: S390: fetestexcept() reports any exception if DXC-code
1939 contains a vector instruction exception.
1940 [18611] math: j1, jn missing errno setting on underflow
1941 [18618] localedata: sync Chechen locale definitions with other *_RU
1943 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
1944 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
1945 [18665] network: In send_dg, the recvfrom function is NOT always using the
1946 buffer size of a newly created buffer (CVE-2015-7547)
1947 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
1949 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
1951 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
1952 [18699] math: tilegx cproj() for various complex infinities does not yield
1954 [18724] libc: Harden put*ent functions against data injection
1955 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
1956 [18755] build: build errors with -DNDEBUG
1957 [18757] stdio: fmemopen fails to set errno on failure
1958 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
1960 [18781] libc: openat64 lacks O_LARGEFILE
1961 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
1962 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
1963 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
1964 [18790] math: [ldbl-128ibm] tanhl inaccurate
1965 [18795] libc: stpncpy fortification misses buffer lengths that are
1966 statically too large
1967 [18796] build: build fails for --disable-mathvec
1968 [18803] math: hypot missing underflows
1969 [18820] stdio: fmemopen may leak memory on failure
1970 [18823] math: csqrt spurious underflows
1971 [18824] math: fma spurious underflows
1972 [18825] math: pow missing underflows
1973 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
1974 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
1975 [18870] build: sem_open.c fails to compile with missing symbol
1977 [18872] stdio: Fix memory leak in printf_positional
1978 [18873] libc: posix_fallocate overflow check ineffective
1979 [18875] math: Excess precision leads incorrect libm
1980 [18877] libc: arm: mmap offset regression
1981 [18887] libc: memory corruption when using getmntent on blank lines
1982 [18918] localedata: hu_HU: change time to HH:MM:SS format
1983 [18921] libc: Regression: extraneous stat() and fstat() performed by
1985 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
1986 binaries (CVE-2015-8777)
1987 [18951] math: tgamma missing underflows
1988 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
1990 [18953] localedata: lt_LT: change currency symbol to the euro
1991 [18956] math: powf inaccuracy
1992 [18961] math: [i386] exp missing underflows
1993 [18966] math: [i386] exp10 missing underflows
1994 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
1995 [18969] build: multiple string test failures due to missing locale
1997 [18970] libc: Reference of pthread_setcancelstate in libc.a
1998 [18977] math: float / long double Bessel functions not in XSI POSIX
1999 [18980] math: i386 libm functions return with excess range and precision
2000 [18981] math: i386 scalb*, ldexp return with excess range and precision
2001 [18982] stdio: va_list and vprintf
2002 [18985] time: Passing out of range data to strftime() causes a segfault
2004 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
2005 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
2006 [19012] locale: iconv_open leaks memory on error path
2007 [19016] math: clog, clog10 inaccuracy
2008 [19018] nptl: Mangle function pointers in tls_dtor_list
2009 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
2010 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
2011 [19048] malloc: malloc: arena free list can become cyclic, increasing
2013 [19049] math: [powerpc] erfc incorrect zero sign
2014 [19050] math: [powerpc] log* incorrect zero sign
2015 [19058] math: [x86_64] Link fail with -fopenmp and -flto
2016 [19059] math: nexttoward overflow incorrect in non-default rounding modes
2017 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
2018 [19074] network: Data race in _res_hconf_reorder_addrs
2019 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
2020 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
2021 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
2023 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
2025 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
2026 [19086] manual: posix_fallocate64 documented argument order is wrong.
2027 [19088] math: lround, llround missing exceptions close to overflow
2029 [19094] math: lrint, llrint missing exceptions close to overflow threshold
2030 [19095] math: dbl-64 lrint incorrect for 64-bit long
2031 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
2032 [19124] dynamic-link: ld.so failed to build with older assmebler
2033 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
2034 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
2035 [19134] math: [powerpc32] lround, lroundf spurious exceptions
2036 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
2037 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
2038 pthread_setaffinity_np
2039 [19156] math: [ldbl-128] j0l spurious underflows
2040 [19164] nptl: tst-getcpu fails with many possible CPUs
2041 [19168] math: math/test-ildoubl and math/test-ldouble failure
2042 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
2043 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
2045 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
2046 (FE_NOMASK_ENV) do not clear SSE exceptions
2047 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
2048 _int_new_arena/reused_arena
2049 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
2050 [19201] math: dbl-64 remainder incorrect sign of zero result
2051 [19205] math: bits/math-finite.h conditions do not match math.h and
2053 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
2054 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
2055 for C99-based standards
2056 [19212] libc: features.h not -Wundef clean
2057 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
2059 [19214] libc: Family and model identification for AMD CPU's are incorrect.
2060 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
2061 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
2063 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
2064 "inexact" exceptions
2065 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
2067 [19242] libc: strtol incorrect in Turkish locales
2068 [19243] malloc: reused_arena can pick an arena on the free list, leading
2069 to an assertion failure and reference count corruption
2070 [19253] time: tzset() ineffective when temporary TZ did not include DST
2072 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
2073 [19270] math: [hppa] Shared libm missing __isnanl
2074 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
2075 MAP_HUGETLB and MAP_STACK defines
2076 [19313] nptl: Wrong __cpu_mask for x32
2077 [19347] libc: grantpt: try to force a specific gid even without pt_chown
2078 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
2079 [19350] math: [ldbl-128ibm] sinhl spurious overflows
2080 [19351] math: [ldbl-128ibm] logl inaccurate near 1
2081 [19363] time: x32: times() return value wrongly truncates/sign extends
2083 [19367] dynamic-link: Improve branch prediction on Silvermont
2084 [19369] network: Default domain name not reset by res_ninit when "search"
2085 / "domain" entry is removed from resolv.conf
2086 [19375] math: powerpc: incorrect results for POWER7 logb with negative
2088 [19385] localedata: bg_BG: time separator should be colon, not comma
2089 [19408] libc: linux personality syscall wrapper may erroneously return an
2090 error on 32-bit architectures
2091 [19415] libc: dladdr returns wrong names on hppa
2092 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
2093 IBM905, IBM907, and IBM909
2094 [19439] math: Unix98 isinf and isnan functions conflict with C++11
2095 [19443] build: build failures with -DDEBUG
2096 [19451] build: Make check fails on test-double-vlen2
2097 [19462] libc: Glibc failed to build with -Os
2098 [19465] math: Wrong code with -Os
2099 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
2101 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
2103 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
2104 [19486] math: S390: Math tests fail with "Exception Inexact set".
2105 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
2106 [19550] libc: [mips] mmap negative offset handling inconsistent with other
2108 [19590] math: Fail to build shared objects that use libmvec.so functions.
2112 * The following bugs are resolved with this release:
2114 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
2115 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
2116 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
2117 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
2118 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
2119 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
2120 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
2121 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
2122 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
2123 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
2124 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
2125 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
2126 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
2127 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
2128 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
2129 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
2130 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
2131 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
2132 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
2133 18657, 18676, 18694, 18696, 18887.
2135 * Cache information can be queried via sysconf() function on s390 e.g. with
2136 _SC_LEVEL1_ICACHE_SIZE as argument.
2138 * A buffer overflow in gethostbyname_r and related functions performing DNS
2139 requests has been fixed. If the NSS functions were called with a
2140 misaligned buffer, the buffer length change due to pointer alignment was
2141 not taken into account. This could result in application crashes or,
2142 potentially arbitrary code execution, using crafted, but syntactically
2143 valid DNS responses. (CVE-2015-1781)
2145 * The time zone file parser has been made more robust against crafted time
2146 zone files, avoiding heap buffer overflows related to the processing of
2147 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
2148 large time zone data files. Overly long time zone specifiers in the TZ
2149 variable no longer result in stack overflows and crashes.
2151 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
2152 for LD and GD on x86 and x86-64, has been implemented. You will need
2153 binutils-2.24 or later to enable this optimization.
2155 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
2156 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
2157 Hat). These updates cause user visible changes, such as the fix for bug
2160 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
2161 and getXXbyYY NSS calls for the same database, causing a denial-of-service
2162 condition in some applications.
2164 * Added vector math library named libmvec with the following vectorized x86_64
2165 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
2167 The library can be disabled with --disable-mathvec. Use of the functions is
2168 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
2169 Shared library libmvec.so is linked in as needed when using -lm (no need to
2170 specify -lmvec explicitly for not static builds).
2171 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
2173 * A new fmemopen implementation has been added with the goal of POSIX
2174 compliance. The new implementation fixes the following long-standing
2175 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
2176 old implementation is still present for use be by existing binaries.
2178 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
2179 releases. It has been fixed to match 2.19 and older, but binaries built
2180 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
2182 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
2183 Contributed by Roland McGrath (Google).
2185 * The header <regexp.h> is deprecated, and will be removed in a future
2186 release. Use of this header will trigger a deprecation warning.
2187 Application developers should update their code to use <regex.h> instead.
2189 This header was formerly part of SUS, but was deprecated in 1994 and
2190 removed from the standard in 2001. Also, the glibc implementation
2191 leaks memory. See BZ#18681 for more details.
2195 * The following bugs are resolved with this release:
2197 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
2198 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
2199 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
2200 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
2201 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
2202 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
2203 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
2204 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
2205 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
2206 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
2209 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
2210 too little memory for the to-be-scanned arguments and overflow the
2211 allocated buffer. The implementation now correctly computes the required
2212 buffer size when using malloc, and switches to malloc from alloca as
2215 * A new semaphore algorithm has been implemented in generic C code for all
2216 machines. Previous custom assembly implementations of semaphore were
2217 difficult to reason about or ensure that they were safe. The new version
2218 of semaphore supports machines with 64-bit or 32-bit atomic operations.
2219 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
2220 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
2222 * Port to Altera Nios II has been contributed by Mentor Graphics.
2224 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
2225 implementations for powerpc64/powerpc64le.
2226 Implemented by Adhemerval Zanella (IBM).
2228 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
2229 and powerpc64le. This may improve lock scaling of existing programs on
2230 HTM capable systems. The lock elision code is only enabled with
2231 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
2232 powerpc will issue a transaction abort on every syscall to avoid side
2233 effects being visible outside transactions.
2235 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
2236 AArch64. Contributed by ARM Ltd.
2238 * i386 memcpy functions optimized with SSE2 unaligned load/store.
2240 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
2241 under certain input conditions resulting in the execution of a shell for
2242 command substitution when the application did not request it. The
2243 implementation now checks WRDE_NOCMD immediately before executing the
2244 shell and returns the error WRDE_CMDSUB as expected.
2246 * CVE-2012-3406 printf-style functions could run into a stack overflow when
2247 processing format strings with a large number of format specifiers.
2249 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
2250 infinite loop if the DNS response contained a PTR record of an unexpected
2253 * The minimum GCC version that can be used to build this version of the GNU
2254 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
2255 still be used to compile programs using the GNU C Library.
2257 * The GNU C Library is now built with -Werror by default. This can be
2258 disabled by configuring with --disable-werror.
2260 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
2262 * The obsolete sigvec function has been removed. This was the original
2263 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
2264 programs have been using instead for about 25 years. Of course, ABI
2265 compatibility for old binaries using sigvec remains intact.
2267 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
2268 with newer versions of bison.
2270 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
2271 The original MIPS o32 hard-float ABI requires an FPU where double-precision
2272 registers overlay two consecutive single-precision registers. MIPS32R2
2273 introduced a new FPU mode (FR=1) where double-precision registers extend the
2274 corresponding single-precision registers which is incompatible with the
2275 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
2276 require the use of FR=1 making a transition necessary. New o32 ABI
2277 extensions enable users to migrate over time from the original o32 ABI
2278 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
2279 tracks the ABI of any loaded object and verifies that new objects are
2280 compatible. Mode transitions will also be requested as required and
2281 unsupportable objects will be rejected. The ABI checks include both soft and
2282 hard float ABIs for o32, n32 and n64.
2284 GCC 5 with GNU binutils 2.25 onwards:
2285 It is strongly recommended that all o32 system libraries are built using the
2286 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
2287 with the original and all new o32 ABI extensions. Configure a MIPS GCC
2288 compiler using --with-fp-32=xx to set this by default.
2292 * The following bugs are resolved with this release:
2294 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
2295 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
2296 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
2297 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
2298 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
2299 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
2300 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
2301 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
2302 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
2303 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
2304 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
2305 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
2306 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
2307 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
2308 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
2310 * Reverted change of ABI data structures for s390 and s390x:
2311 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
2312 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
2313 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
2314 are preserved pointing straight to the same implementation as the old ones.
2315 Given that, new callers will simply provide a too-big buffer to these
2316 functions. Any applications/libraries out there that embed jmp_buf or
2317 ucontext_t in an ABI-relevant data structure that have already been rebuilt
2318 against 2.19 headers will have to rebuilt again. This is necessary in any
2319 case to revert the breakage in their ABI caused by the glibc change.
2321 * Support for file description locks is added to systems running the
2322 Linux kernel. The standard file locking interfaces are extended to
2323 operate on file descriptions, not file descriptors, via the use of
2324 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
2325 are associated with an open file instead of a process.
2327 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
2329 * The minimum Linux kernel version that this version of the GNU C Library
2330 can be used with is 2.6.32.
2332 * Running the testsuite no longer terminates as soon as a test fails.
2333 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
2334 with PASS or FAIL lines for individual tests. A summary of the results is
2335 printed, including a list of failing lists, and "make check" exits with
2336 error status if there were any unexpected failures. "make check
2337 stop-on-test-failure=y" may be used to keep the old behavior.
2339 * The am33 port, which had not worked for several years, has been removed
2342 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
2343 supported; they now act the same as _DEFAULT_SOURCE (but generate a
2344 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
2345 conflicted with POSIX (support for which was removed in 2.19), the
2346 interfaces those macros enabled remain available when compiling with
2347 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
2348 test macros defined.
2350 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
2352 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
2353 This may improve lock scaling of existing programs on TX capable systems.
2354 The lock elision code is only built with --enable-lock-elision=yes and
2355 then requires a GCC version supporting the TX builtins. With lock elision
2356 default mutexes are elided via __builtin_tbegin, if the cpu supports
2357 transactions. By default lock elision is not enabled and the elision code
2360 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
2361 copy the path argument. This allowed programs to cause posix_spawn to
2362 deference a dangling pointer, or use an unexpected pathname argument if
2363 the string was modified after the posix_spawn_file_actions_addopen
2366 * All supported architectures now use the main glibc sysdeps directory
2367 instead of some being in a separate "ports" directory (which was
2368 distributed separately before glibc 2.17).
2370 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
2371 On configurations that support it (all Linux configurations), it's now
2372 used regardless of the --enable-add-ons switch to configure. It is no
2373 longer possible to build such configurations without pthreads support.
2375 * Locale names, including those obtained from environment variables (LANG
2376 and the LC_* variables), are more tightly checked for proper syntax.
2377 setlocale will now fail (with EINVAL) for locale names that are overly
2378 long, contain slashes without starting with a slash, or contain ".." path
2379 components. (CVE-2014-0475) Previously, some valid locale names were
2380 silently replaced with the "C" locale when running in AT_SECURE mode
2381 (e.g., in a SUID program). This is no longer necessary because of the
2384 * On x86-64, the dynamic linker's lazy-binding support is now compatible
2385 with application code using Intel MPX instructions. (With all previous
2386 versions, the MPX register state could be clobbered when making calls
2387 into or out of a shared library.) Note that while the new dynamic
2388 linker is compatible with all known x86 hardware whether or not it
2389 supports Intel MPX, some x86 instruction-set emulators might fail to
2390 handle the new instruction encodings. This is known to affect Valgrind
2391 versions up through 3.9 (but will be fixed in the forthcoming 3.10
2392 release), and might affect other tools that do instruction emulation.
2394 * Support for loadable gconv transliteration modules has been removed.
2395 The support for transliteration modules has been non-functional for
2396 over a decade, and the removal is prompted by security defects. The
2397 normal gconv conversion modules are still supported. Transliteration
2398 with //TRANSLIT is still possible, and the //IGNORE specifier
2399 continues to be supported. (CVE-2014-5119)
2401 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
2402 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
2403 resulting a denial-of-service security vulnerability in applications which
2404 use functions related to iconv. (CVE-2014-6040)
2408 * The following bugs are resolved with this release:
2410 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
2411 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
2412 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
2413 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
2414 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
2415 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
2416 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
2417 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
2418 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
2419 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
2420 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
2421 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
2422 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
2423 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
2424 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
2425 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
2426 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
2427 16431, 16453, 16474, 16506, 16510, 16529
2429 * Slovenian translations for glibc messages have been contributed by the
2430 Translation Project's Slovenian team of translators.
2432 * The public headers no longer use __unused nor __block. This change is to
2433 support compiling programs that are derived from BSD sources and use
2434 __unused internally, and to support compiling with Clang's -fblock
2435 extension which uses __block.
2437 * CVE-2012-4412 The strcoll implementation caches indices and rules for
2438 large collation sequences to optimize multiple passes. This cache
2439 computation may overflow for large collation sequences and may cause a
2440 stack or buffer overflow. This is now fixed to use a slower algorithm
2441 which does not use a cache if there is an integer overflow.
2443 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
2444 rules for large collation sequences to optimize multiple passes and falls
2445 back to alloca if malloc fails, resulting in a possible stack overflow.
2446 The implementation now falls back to an uncached collation sequence lookup
2449 * CVE-2013-4788 The pointer guard used for pointer mangling was not
2450 initialized for static applications resulting in the security feature
2451 being disabled. The pointer guard is now correctly initialized to a
2452 random value for static applications. Existing static applications need
2453 to be recompiled to take advantage of the fix (bug 15754).
2455 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
2456 to the d_name member of struct dirent, or omit the terminating NUL
2457 character. (Bugzilla #14699).
2459 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
2460 aligned_alloc functions could allocate too few bytes or corrupt the
2461 heap when passed very large allocation size values (Bugzilla #15855,
2464 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
2465 for AF_INET6 has been fixed (Bugzilla #16072).
2467 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
2468 pap_CW, quz_PE, the_NP.
2470 * Substantially revised locales: gd_GB, ht_HT
2472 * The LC_ADDRESS field was updated to support country_car for almost all
2475 * ISO 1427 definitions were updated.
2477 * ISO 3166 definitions were updated.
2479 * The localedef utility now supports --big-endian and --little-endian
2480 command-line options to generate locales for a different system from that
2481 for which the C library was built.
2483 * Binary locale files now only depend on the endianness of the system for
2484 which they are generated and not on other properties of that system. As a
2485 consequence, binary files generated with new localedef may be incompatible
2486 with old versions of the GNU C Library, and binary files generated with
2487 old localedef may be incompatible with this version of the GNU C Library,
2488 in the following circumstances:
2490 + Locale files may be incompatible on m68k systems.
2492 + Locale archive files (but not separate files for individual locales) may
2493 be incompatible on systems where plain "char" is signed.
2495 * The configure option --disable-versioning has been removed. Builds with
2496 --disable-versioning had not worked for several years.
2498 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
2499 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
2501 * SystemTap probes for malloc have been introduced.
2503 * SystemTap probes for slow multiple precision fallback paths of
2504 transcendental functions have been introduced.
2506 * Support for powerpc64le has been added.
2508 * The soft-float powerpc port now supports e500 processors.
2510 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
2512 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
2513 set of header declarations that are enabled by default, even when other
2514 feature test macros or compiler options such as -std=c99 would otherwise
2515 disable some of those declarations.
2517 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
2518 conflict with POSIX. The libbsd-compat library (which was a dummy library
2519 that did nothing) has also been removed.
2521 * Preliminary documentation about Multi-Thread, Async-Signal and
2522 Async-Cancel Safety has been added.
2524 * Change of ABI data structures for s390 and s390x:
2525 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
2526 allow for future hardware extensions. All library functions that accept or
2527 return these structures were versioned in order to provide backwards
2528 compatibility with existing code. However, not all cases can be handled
2529 with interface versioning. If an application embeds either structure into
2530 another structure and that structure is passed to another compilation unit
2531 which expects the newer larger-sized object then any access to the new
2532 fields will result in undefined behaviour. Similarly any access to fields
2533 that were moved by the enlarging of the structures will cause undefined
2534 behaviour. To fix the undefined behaviour all objects that are part of the
2535 final in-memory image must agree on the size of structures, and this may
2536 require recompilation.
2540 * The following bugs are resolved with this release:
2542 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
2543 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
2544 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
2545 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
2546 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
2547 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
2548 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
2549 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
2550 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
2551 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
2552 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
2553 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
2554 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
2557 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
2558 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
2559 Distributions can re-enable building and using pt_chown via the new configure
2560 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
2561 considerable security risks and should only be used if the distribution
2562 understands and accepts the risks.
2564 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
2567 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
2568 fixed (Bugzilla #15330).
2570 * Add support for calling C++11 thread_local object destructors on thread
2571 and program exit. This needs compiler support for offloading C++11
2572 destructor calls to glibc.
2574 * Improved worst case performance of libm functions with double inputs and
2577 * Support for priority inherited mutexes in pthread condition variables on
2578 non-x86 architectures.
2580 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
2582 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
2584 * Optimized string functions for ARM. Implemented by Will Newton and
2587 * Optimized libm functions for SPARC. Implemented by David S. Miller.
2589 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
2592 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
2593 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
2595 * Added a benchmark framework to track performance of functions in glibc.
2597 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
2598 It is based on draft TS 18661 and currently enabled as a GNU extension.
2600 * On Linux, the clock function now uses the clock_gettime system call
2601 for improved precision, rather than old times system call.
2603 * Added support for version-3 tz format files. This is needed when using
2604 the tz database release 2013e or later, and affects a few unusual cases --
2605 currently only TZ='America/Godthab' for time stamps after 2037.
2607 * Added new API functions pthread_getattr_default_np and
2608 pthread_setattr_default_np to get and set the default pthread
2609 attributes of a process.
2611 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
2612 This may improve lock scaling of existing programs on TSX capable systems.
2613 When the --enable-lock-elision=yes parameter is specified at configure
2614 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
2617 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
2618 availability). Implemented by Ryan S. Arnold.
2620 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
2624 * The following bugs are resolved with this release:
2626 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
2627 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
2628 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
2629 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
2630 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
2631 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
2632 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
2633 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
2634 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
2635 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
2636 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
2637 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
2638 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
2639 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
2640 14879, 14889, 14893, 14898, 14914.
2642 * Optimization of memcpy for MIPS.
2644 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
2645 EMFILE has been fixed (Bugzilla #14889).
2647 * The add-on ports collection is now distributed in the "ports" subdirectory
2648 of the main GNU C Library distribution, rather than separately.
2650 * Port to ARM AArch64 contributed by Linaro.
2652 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
2653 Optimized versions of memcpy, memset, and memcmp added for System z10 and
2655 Implemented by Andreas Krebbel.
2657 * The new function secure_getenv allows secure access to the environment,
2658 returning NULL if running in a SUID/SGID process. This function replaces
2659 the internal function __secure_getenv.
2661 * SystemTap static probes have been added into the dynamic linker.
2662 Implemented by Gary Benson.
2664 * Optimizations of string functions strstr, strcasestr and memmem.
2665 Implemented by Maxim Kuvyrkov.
2667 * The minimum Linux kernel version that this version of the GNU C Library
2668 can be used with is 2.6.16.
2670 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
2671 powerpc POWER7. Implemented by Will Schmidt.
2673 * New configure option --disable-nscd builds the C library such that it
2674 never attempts to contact the Name Service Caching Daemon (nscd).
2675 New configure option --disable-build-nscd avoids building nscd itself;
2676 this is the default if --disable-nscd is used.
2678 * Improved support for cross-compilation, including cross-testing and
2679 bootstrap builds without a previously built glibc.
2681 * Several testsuite tests are now able to test multiple IFUNC variants of an
2682 interface, rather than just testing the one that would be chooen by
2685 * New configure options --with-bugurl and --with-pkgversion, for
2686 distributors to use to embed their bug-reporting and package version
2687 information in --help and --version output.
2689 * The ttyname and ttyname_r functions on Linux now fall back to searching for
2690 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
2691 allows creation of chroots without the procfs mounted on /proc.
2693 * The `crypt' function now fails if passed salt bytes that violate the
2694 specification for those values. On Linux, the `crypt' function will
2695 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
2696 enabled, and fail on encrypted strings using the MD5 or DES algorithm
2697 when the mode is enabled.
2699 * The `clock_*' suite of functions (declared in <time.h>) is now available
2700 directly in the main C library. Previously it was necessary to link with
2701 -lrt to use these functions. This change has the effect that a
2702 single-threaded program that uses a function such as `clock_gettime' (and
2703 is not linked with -lrt) will no longer implicitly load the pthreads
2704 library at runtime and so will not suffer the overheads associated with
2705 multi-thread support in other code such as the C++ runtime library.
2707 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
2712 * The following bugs are resolved with this release:
2714 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
2715 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
2716 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
2717 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
2718 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
2719 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
2720 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
2721 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
2722 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
2723 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
2724 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
2725 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
2726 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
2727 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
2728 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
2729 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
2730 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
2731 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
2732 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
2733 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
2734 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
2735 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
2738 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
2739 configuring glibc with:
2740 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
2741 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
2742 Implemented by H.J. Lu.
2746 + define static_assert
2748 + do not declare gets
2750 + declare at_quick_exit and quick_exit also for ISO C11
2752 + aligned_alloc. NB: The code is deliberately allows the size parameter
2753 to not be a multiple of the alignment. This is a moronic requirement
2754 in the standard but it is only a requirement on the caller, not the
2757 + timespec_get added
2759 + uchar.h support added
2761 + CMPLX, CMPLXF, CMPLXL added
2763 Implemented by Ulrich Drepper.
2765 * Support for the IA-64 has been moved to ports.
2767 * Remove support for anything but ELF binary format
2769 * Checking versions of poll, ppoll added.
2770 Implemented by Ulrich Drepper.
2772 * More generic and 64-bit performance optimizations to math functions.
2773 Implemented by Ulrich Drepper.
2775 * New configure option --enable-obsolete-rpc makes the deprecated RPC
2776 headers and functions available at compile time as they were before
2777 version 2.14. This option will be removed at some time in the future
2778 after the TI-RPC library becomes fully sufficient for the needs of
2779 existing applications.
2781 * Compatibility code for Linux kernel versions before 2.4 has been removed.
2782 Note that glibc is not expected to work with any Linux kernel version
2785 * New header <sys/auxv.h> and function getauxval allowing easy access to
2786 the AT_* key-value pairs passed from the Linux kernel. The header also
2787 defines the HWCAP_* bits associated with the AT_HWCAP key.
2789 * New locales: mag_IN
2791 * New configure option --enable-systemtap builds SystemTap static probes
2792 into libc for setjmp and longjmp and into libpthread for various operations.
2793 So far the setjmp/longjmp probes and some of the libpthread probes are
2794 provided only for i*86 and x86_64.
2795 Implemented by Roland McGrath and Rayson Ho.
2797 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
2799 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
2802 * More optimized functions for SPARC. Implemented by David S. Miller.
2804 * Improved support for cross-compilation, especially bootstrap builds
2805 without a previously built glibc.
2807 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
2808 Chris Metcalf from Tilera.
2810 * Support for the old ARM ABI has been removed from ports. Only the EABI is
2811 now supported for ARM processors.
2813 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
2814 as the name of the dynamic linker, to distinguish it from the
2815 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
2817 * Support for CRIS has been removed from ports.
2819 * A new class of installed header has been documented for low-level
2820 platform-specific functionality. PowerPC added the first instance with a
2821 function to provide time base register access. Contributed by Tulio
2822 Magno Quites Machado Filho.
2824 * ix86 configurations now install header files that are consistent with
2825 what x86-64 configurations install. These same header files can be used
2826 for -m32, -m64, or -mx32 builds.
2827 Contributed by H.J. Lu.
2829 * Math library bug fixes. A thorough audit of all open math library bugs was
2830 conducted by Joseph Myers. Significant progress was made on many math
2831 library bugs resulting in more accurate exceptions and function results.
2832 Many thanks to all those that contributed including Andreas Jaeger for his
2833 patch review and work on the x87 trigonometric instruction issues.
2835 * Timezone data is no longer installed. Timezone-related binaries and scripts
2836 will continue to be installed. Users should obtain their timezone data from
2837 their distribution provider or from the tzdata package at
2838 <ftp://munnari.oz.au/pub/>.
2842 * The following bugs are resolved with this release:
2844 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
2845 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
2846 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
2847 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
2848 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
2849 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
2850 13484, 13506, 13515, 13523, 13524, 13538, 13540
2852 * New program pldd to list loaded object of a process
2853 Implemented by Ulrich Drepper.
2855 * Add nss_db support back to glibc. No more dependency on Berkeley db
2856 and support for initgroups lookups.
2857 Implemented by Ulrich Drepper.
2859 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
2860 Contributed by HJ Lu.
2862 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
2863 Contributed by HJ Lu.
2865 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
2866 on x86-32 and x86-64.
2867 Contributed by Liubov Dmitrieva.
2869 * Optimized strchr and strrchr for SSE on x86-32.
2870 Contributed by Liubov Dmitrieva.
2872 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
2873 for x86-64 and x86-32.
2874 Contributed by Liubov Dmitrieva.
2876 * New interfaces: scandirat, scandirat64
2877 Implemented by Ulrich Drepper.
2879 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
2880 Implemented by Ulrich Drepper.
2882 * nscd now also caches the netgroup database.
2883 Implemented by Ulrich Drepper.
2885 * Integrate libm with gcc's -ffinite-math-only option.
2886 Implemented by Ulrich Drepper.
2888 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
2889 to math functions. Implemented by Ulrich Drepper.
2891 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
2892 Implemented by Ulrich Drepper.
2894 * New Linux interfaces: process_vm_readv, process_vm_writev
2896 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
2897 Implemented by Ulrich Drepper.
2899 * Optimized nearbyint and strcasecmp for PPC.
2900 Implemented by Adhemerval Zanella.
2902 * New locales: bho_IN, unm_US, es_CU, ta_LK
2906 * The following bugs are resolved with this release:
2908 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
2909 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
2910 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
2911 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
2912 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
2913 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
2914 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
2915 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
2916 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
2917 12795, 12811, 12813, 12814, 12841
2919 * The RPC implementation in libc is obsoleted. Old programs keep working
2920 but new programs cannot be linked with the routines in libc anymore.
2921 Programs in need of RPC functionality must be linked against TI-RPC.
2922 The TI-RPC implementation is IPv6 enabled and there are other benefits.
2924 Visible changes of this change include (obviously) the inability to link
2925 programs using RPC functions without referencing the TI-RPC library and the
2926 removal of the RPC headers from the glibc headers.
2927 Implemented by Ulrich Drepper.
2929 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
2930 syncfs, setns, sendmmsg
2932 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
2933 yue_HK, lij_IT, mhr_RU
2935 * New encodings: CP770, CP771, CP772, CP773, CP774
2937 * New program sotruss to trace calls through PLTs
2938 Implemented by Ulrich Drepper.
2940 * The malloc hook implementation is marked deprecated and will be removed
2941 from the default implementation in the next version. The design never
2942 worked ever since the introduction of threads. Even programs which do
2943 not create threads themselves can use multiple threads created internally.
2947 * The following bugs are resolved with this release:
2949 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
2950 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
2951 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
2952 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
2955 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
2957 * POWER7 optimizations: memset, memcmp, strncmp
2959 * New optimized string functions for x86-64: strnlen (SSE2),
2960 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
2961 Implemented by Ulrich Drepper.
2965 * The following bugs are resolved with this release:
2967 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
2968 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
2969 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
2970 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
2971 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
2972 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
2973 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
2974 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
2976 * New interfaces: pthread_getname_np, pthread_setname_np
2978 * New Linux interface: recvmmsg
2980 * STT_GNU_IFUNC implemented for Sparc by David Miller.
2982 * The dynamic linker now recognizes supported ABI versions from the
2983 EI_ABIVERSION field in the ELF header.
2984 Implemented by Ulrich Drepper.
2986 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
2987 will not be used to fill in password fields in the passwd.byname replies.
2988 Instead it is used to synthesize the shadow.byname table, should it be
2989 missing. This is a useful mode in some installations involving Solaris.
2990 Implemented by Ulrich Drepper.
2992 * New locales: kok_IN, sq_MK, cv_RU
2996 * The following bugs are resolved with this release:
2998 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
2999 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
3000 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
3001 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
3002 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
3003 10789, 10817, 10823, 10840, 10847
3005 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
3007 Implemented by Ulrich Drepper.
3009 * Checking version of longjmp added that fails if an uninitialized stack
3010 frame would be created. Implemented by Ulrich Drepper.
3012 * STT_GNU_IFUNC is now supported in static executables.
3013 Implemented by H.J. Lu.
3015 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
3017 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
3018 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
3019 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
3020 Contributed by H.J. Lu.
3022 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
3023 Implemented by Ulrich Drepper.
3025 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
3027 Contributed by H.J. Lu.
3029 * Support for fma instruction in AVX on x86-64.
3030 Implemented by H.J. Lu and Ulrich Drepper.
3032 * AVX support in x86-64 auditing support in ld.so.
3033 Implemented by H.J. Lu.
3035 * STB_GNU_UNIQUE support added.
3036 Implemented by Ulrich Drepper.
3038 * Implement second fallback mode for optimized DNS lookup for even more
3039 broken environments. If two requests from the same port are not
3040 handled correctly close the socket and open a new one before sending
3041 the second request. The 'single-request-reopen' option in /etc/resolv.conf
3042 can be used to select this mode right away, instead of rediscovering the
3043 necessity is every process again.
3044 Implemented by Ulrich Drepper.
3046 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
3047 Implemented by Adam Tkac.
3049 * Optimized iconv conversions for S390x.
3050 Implemented by Andreas Krebbel.
3052 * Using condvars with PI mutexes is now more efficient due to kernel
3053 support for requeueing to PI futexes. NPTL support added for x86-64.
3054 Implemented by Ulrich Drepper.
3056 * New locales: ps_AF, my_MM
3060 * The following bugs are resolved with this release:
3062 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
3063 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
3064 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
3065 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
3066 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
3068 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
3069 Implemented by Ulrich Drepper.
3071 * New Linux interfaces: accept4, fallocate, fallocate64.
3072 Implemented by Ulrich Drepper.
3074 * Correct declarations of string function when used in C++ code. This
3075 could lead to compile errors for invalid C++ code.
3077 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
3080 * New POSIX 2008 interface: psiginfo
3081 Implemented by Ulrich Drepper.
3083 * New ISO C++1x interfaces: quick_exit, at_quick_exit
3084 Implemented by Ulrich Drepper.
3086 * Support for selecting between multiple function definitions at runtime
3087 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
3089 * The libcrypt library can now use the hash function implementations in
3090 NSS. Implemented by Ulrich Drepper.
3092 * The malloc implementation can be compiled to be less memory efficient
3093 but higher performing in multi-threaded programs.
3094 Implemented by Ulrich Drepper.
3096 * New locales: nan_TW@latin, ks_IN
3098 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
3099 Implemented by Ulrich Drepper.
3101 * Extended printf hook support. It is possible to use user-defined types
3102 and extend existing format specifiers.
3103 Implemented by Ulrich Drepper.
3105 * Handling for group shadow files has been added.
3106 Implemented by Ulrich Drepper.
3108 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
3109 servers (the case, e.g., for some people using the built-in DNS
3110 server in ADSL modems/routers). There is a once-per-process timeout
3111 in case of a broken server. To avoid it, users can run nscd or put
3112 'options single-request' in /etc/resolv.conf.
3113 Implemented by Ulrich Drepper.
3117 * The following bugs are resolved with this release:
3119 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
3120 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
3121 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
3122 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
3123 6968, 6974, 6980, 6995, 7008, 7009, 7029
3125 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
3126 up at the same time. Implemented by Ulrich Drepper.
3128 * TLS descriptors for LD and GD on x86 and x86-64.
3129 Implemented by Alexandre Oliva.
3131 * getaddrinfo now handles DCCP and UDPlite.
3132 Implemented by Ulrich Drepper.
3134 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
3135 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
3136 Implemented by Ulrich Drepper.
3138 * New implementation of memmem, strstr, and strcasestr which is O(n).
3139 Implemented by Eric Blake.
3141 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
3143 * Implement "e" option for popen to open file descriptor with the
3144 close-on-exec flag set. Implemented by Ulrich Drepper.
3146 * Implement "b" mode for fmemopen. In this mode writes writes don't
3147 implicitly add a NUL byte and seeks from the end of the buffer really
3148 use the buffer end, not the string length as the basis.
3149 Implemented by Ulrich Drepper.
3151 * Many functions, exported and internal, now atomically set the close-on-exec
3152 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
3154 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
3156 Implemented by Pravin Satpute.
3158 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
3162 * The following bugs are resolved with this release:
3164 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
3165 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
3166 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
3167 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
3168 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
3169 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
3170 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
3172 * New locales: bo_CN, bo_IN, shs_CA.
3174 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
3176 * Sorting rules for some Indian languages (Devanagari and Gujarati).
3177 Implemented by Pravin Satpute.
3179 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
3181 * nscd caches now all timeouts for DNS entries
3182 Implemented by Ulrich Drepper.
3184 * nscd is more efficient and wakes up less often.
3185 Implemented by Ulrich Drepper.
3187 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
3188 vdprintf, and obstack_vprintf.
3189 Implemented by Jakub Jelinek.
3191 * Faster memset for x86-64.
3192 Implemented by Harsha Jagasia and H.J. Lu.
3194 * Faster memcpy on x86.
3195 Implemented by Ulrich Drepper.
3197 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
3198 Implemented by Ulrich Drepper.
3200 * Faster sqrt and sqrtf implemention for some PPC variants.
3201 Implemented by Steven Munroe.
3205 * The following bugs are resolved with this release:
3207 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
3208 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
3209 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
3210 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
3211 5071, 5103, 5104, 5112, 5113, 5184, 5186
3213 * More checking functions: fread, fread_unlocked, open*, mq_open.
3214 Implemented by Jakub Jelinek and Ulrich Drepper.
3216 * Extend fortification to C++. Implemented by Jakub Jelinek.
3218 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
3219 by not recognizing 'a' as a modifier when those specs are requested.
3220 Implemented by Jakub Jelinek.
3222 * PPC optimizations to math and string functions.
3223 Implemented by Steven Munroe.
3225 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
3226 options to be passed. Implemented by Ulrich Drepper.
3228 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
3230 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
3231 Implemented by Ulrich Drepper.
3233 * Handle private futexes in the NPTL implementation.
3234 Implemented by Jakub Jelinek and Ulrich Drepper.
3236 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
3237 Implemented by Roland McGrath and Ulrich Drepper.
3239 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
3241 * SHA-256 and SHA-512 based password encryption.
3242 Implemented by Ulrich Drepper.
3244 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
3245 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
3248 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
3249 Implemented by Ulrich Drepper.
3253 * The following bugs are resolved with this release:
3255 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
3256 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
3257 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
3258 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
3259 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
3260 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
3261 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
3264 * New Linux interfaces: epoll_pwait, sched_getcpu.
3266 * New generic interfaces: strerror_l.
3268 * nscd can now cache the services database. Implemented by Ulrich Drepper.
3272 * The following bugs are resolved with this release:
3274 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
3275 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
3276 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
3277 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
3278 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
3279 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
3280 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
3281 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
3282 3225, 3251, 3252, 3253, 3273
3284 * For Linux, the sorting of addresses returned by getaddrinfo now also
3285 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
3286 Implemented by Ulrich Drepper.
3288 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
3289 Implemented by Ulrich Drepper.
3291 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
3293 * New iconv module for MIK. Contributed by Alexander Shopov.
3295 * For sites with broken group and/or passwd database, the auto-propagate
3296 option of nscd can prevent creating ID lookup entries from the results
3297 of a name lookup and vice versa. This usually is no problem but some
3298 site might have problems with the default behavior.
3299 Implemented by Ulrich Drepper.
3301 * Iterating over entire database in NIS can be slow. With the
3302 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
3303 to trade time for memory. The entire database will be read at once.
3304 Implemented by Ulrich Drepper.
3306 * The interfaces introduced in RFC 3542 have been implemented by
3309 * Support for the new ELF hash table format was added by Ulrich Drepper.
3311 * Support for priority inheritance mutexes added by Jakub Jelinek and
3314 * Support for priority protected mutexes added by Jakub Jelinek.
3316 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
3317 or_IN, csb_PL, fy_NL, sr_ME.
3321 * More overflow detection functions.
3323 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
3324 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
3326 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
3327 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
3328 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
3329 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
3330 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
3331 by Masahide Washizawa.
3333 * It is now possible to install audit libraries for the dynamic linker using
3334 LD_AUDIT. Implemented by Ulrich Drepper.
3336 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
3337 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
3338 For a libc and libpthread that works well on Linux 2.4 kernels, we
3339 recommend using the stable 2.3 branch.
3341 * The new function open_wmemstream acts like open_memstream,
3342 but uses a wchar_t wide character buffer.
3344 * The new function ppoll is an improved version of poll, similar to pselect.
3346 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
3347 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
3348 renameat, unlinkat, linkat, symlinkat, readlinkat.
3350 * New Linux kernel system calls: unshare,
3351 inotify_init, inotify_add_watch, inotify_rm_watch.
3353 * The euidaccess function is now also known by the alias eaccess,
3354 for compatibility with some other systems.
3356 * Timezone data updated to 2006b version.
3360 * The following bugs are resolved with this release:
3362 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
3363 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
3364 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
3365 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
3366 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
3367 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
3369 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3371 * As of this release, GCC 4 can be used to compile the C Library.
3373 * Timezone data updated to 2005m version.
3377 * The following bugs are resolved with this release:
3379 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
3380 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
3381 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
3382 777, 787, 821, 822, 823, 825
3384 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3388 * Support for RFC 3678. Real implementations exist only for Linux so far.
3389 Implemented by Ulrich Drepper.
3391 * nscd can now cache entries persistently. Expiring entries are reloaded.
3392 For speedups the cache can be shared in memory with client processes.
3393 Implemented by Ulrich Drepper.
3395 * nscd can now perform SELinux checks.
3396 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
3398 * getaddrinfo queries are now cached. Canonical name lookup is performed
3400 Implemented by Ulrich Drepper.
3402 * The nothrow function attribute is used when headers are used by gcc when
3403 compiling C code. This can avoid significant amounts of exception
3406 * The malloc functions perform more error checking and are stricter when
3407 it comes to reacting on errors. The default action is to terminate
3408 the process after showing an error message. Implemented by Ulrich Drepper.
3410 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
3411 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
3413 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
3414 namespaces using the new function dlmopen(). This feature is of course,
3415 like most other dynamic loading functionality, not available in statically
3416 linked applications. Implemented by Ulrich Drepper.
3418 * Low-overhead boundary checking variants of string and some stdio functions
3419 were added. These are to be used in conjunction with a gcc patch by
3420 Jakub Jelinek which adds calls to these functions if possible.
3421 Implemented by Jakub Jelinek and Ulrich Drepper.
3423 * Old code for several operating systems and machine architectures that
3424 have not been in working condition in a long time have been removed from
3425 the main source tree maintained by the GNU C Library's maintainers.
3426 These files are now reside in the separate `ports' source module
3427 that is usable as an add-on when building the library.
3431 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
3432 interrogate the dynamic linker, compatible with the Solaris interface.
3434 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
3435 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
3437 * getifaddrs now uses the netlink interface on Linux to get its information.
3438 Implemented by Thorsten Kukuk.
3440 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
3441 Implemented by Ulrich Drepper.
3443 * support for non-executable stacks on x86 has been added. Changes mostly
3446 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
3449 * getaddrinfo now performs destination address selection according to
3454 * Thread-safe interfaces for many functions that access locale data
3455 were added in version 2.3, but these features were omitted from NEWS.
3456 Many functions have variants with an `_l' suffix that take a `locale_t'
3457 object as a parameter rather than consulting the current locale.
3458 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
3459 create and maintain `locale_t' objects. Additionally, the new function
3460 `uselocale' sets "the current locale" (as used by functions not so
3461 parameterized) set for an individual thread. These features were added
3462 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
3464 * The functions getresuid, getresgid, setresuid, and setresgid, which
3465 have long been available on Linux, are now declared in <unistd.h>
3466 and are now also available on the Hurd.
3468 * ELF thread-local storage support (TLS) now works on x86-64.
3470 * The new dynamic string token $LIB is expanded in shared library names.
3471 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
3473 * Aldy Hernandez contributed complete software floating point support for
3474 PowerPC machines with no FPU.
3476 * fexecve is implemented on Linux.
3478 * The `btowc' function should work at least twice as fast due to
3479 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
3481 * With approriate thread add-ons cancelable functions are now implemented
3482 in libc.so as well. No need to call the function in libpthread. This
3483 change allowed to finally disable the incorrect and expensive handling
3484 of weak definition in ld.so.
3486 * Yet more PLT entries in libc.so have been removed. We finally arrived
3487 at the bare minimum. Startup times improved appropriately.
3489 * Support for the new Linux/x86 system call interface was added. The
3490 AT_SYSINFO auxiliary vector entry is recognized and handled.
3494 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
3497 * iconv (the program and the interface) now accepts empty names (excluding
3498 options like //TRANSLIT) to mean "use charset of current locale".
3500 * localedef can now transliterate characters in strings which are not in
3501 the provided charmap. The information from the input locale is used.
3503 * Prelinking support was added for ELF targets. This requires additional
3504 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
3506 * Read-only stdio streams now use mmap to speed up operation by eliminating
3507 copying and buffer underflows. To use add 'm' to the mode string of
3508 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
3510 * The malloc functions were completely rewritten by Wolfram Gloger based
3511 on Doug Lea's malloc-2.7.0.c.
3513 * Isamu Hasegawa contributed a completely new and POSIX-conformant
3514 implementation of regex.
3516 * Bruno Haible upgraded the iconv and locale implementation to support
3519 * Contents of the LC_* and LANG environment variables in the CEN style are
3520 not recognized anymore. It never was used. Change by Ulrich Drepper.
3522 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
3523 thread-local storage (TLS) ABI on some platforms.
3524 Changes by Ulrich Drepper. SH support by Kaz Kojima.
3526 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
3527 EUC-JISX0213, and TSCII.
3529 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
3530 BSD-compatible interface for getting all network interface addresses.
3531 Implementation for IPv4 by Roland McGrath.
3533 * Loading of locale data is faster due to the introduction of a locale
3534 archive. Implemented by Roland McGrath and Ulrich Drepper.
3536 * Startup times are significantly reduced by not using exported functions
3537 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
3540 * Steven Munroe contributed a port to PowerPC64/Linux.
3544 * The Hurd now uses the GNU libio implementation of stdio rather than the
3545 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
3547 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
3548 with the same behavior as the Linux system call of the same name.
3552 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
3553 128-bit long double format.
3555 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
3556 IBM1161, and IBM1162 charsets.
3558 * Andreas Jaeger contributed a port to x86-64/Linux.
3560 * Peter Bruin contributed a port to PowerPC/Hurd.
3562 * libc functions using I/O streams now can handle wide-oriented streams
3565 * optimizations in the dynamic linker. Binaries created by recent binutils
3566 versions start up quicker due to reduced time spent on relocations.
3568 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
3572 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
3573 asinh, atanh, j0 for the 128-bit long double format.
3575 * Bruno Haible updated all the code handling Unicode in some form to
3576 support Unicode 3.1.
3578 * Speed of regex for single-byte locales is back to previous levels.
3579 Patch by Isamu Hasegawa.
3581 * Alpha, SPARC, and IA-64 now also using floating stacks.
3583 * Startup time of internationalized applications greatly improved through
3584 iconv cache. Use iconvconfig to generate the cache file.
3585 Contributed by Ulrich Drepper.
3587 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
3588 severe performance problems. Patch by David Mosberger.
3590 * The Hurd port got a lot more functionality like AIO, various stdio
3591 extensions, etc. Mainly done by Roland McGrath.
3593 * mtrace can now lookup symbols in shared libraries.
3597 * Intel's IA-64 math library is largely integrated. It provides fast and
3598 accurate implementatations for most basic and standard math functions
3599 in float, double, and long double format.
3601 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
3602 and asin for the 96-bit long double format and asin, log, tan for the
3603 128-bit long double format.
3605 * The beginning of a last-bit accurate math library by IBM Haifa were added.
3606 The basic double functions exist today. Contributed by Abraham Ziv
3607 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
3608 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
3610 * An asynchronous name lookup library was added. The interface is designed
3611 after POSIX AIO. The proposal was circulated beforehand to get comments.
3612 No negative ones came in. Implemented by Ulrich Drepper.
3614 * Port to S390/64bit contributed by Martin Schwidefsky
3615 <schwidefsky@de.ibm.com>.
3617 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
3618 of functions for Linux/IA-64.
3620 * The RPC code is now thread safe. Threads can now use the same service
3621 of different services at the same time. Patch by Eric Norum
3622 <eric.norum@usask.ca> with some help by Ulrich Drepper.
3624 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
3625 family of functions for Linux/S390.
3627 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
3628 of functions for Linux/x86.
3630 * Port to Linux/CRIS contributed by Axis Communications.
3634 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
3635 we can now check for namespace violations and missing declarations. The
3636 result is that almost all headers are now Unix-compliant (as defined in
3637 the upcoming XPG6). The negative side is that some programs might need
3638 corrections, too, if they depend on the incorrect form of the headers in
3639 previous versions which defined too many symbols and included too many
3642 * regex now handles multibyte character sets correctly.
3643 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
3645 * iconv (the program) does now conform to the upcoming XPG6 and handles
3646 charmaps. Instead of the charset names the path of charmaps can be
3647 provided and the conversion happens based on this data.
3648 Contributed by Ulrich Drepper.
3650 * The locale program now provides detailed information about the installed
3655 only lists the names of the supported locales
3659 provides details such as country, language, and codeset name.
3660 Contributed by Ulrich Drepper.
3664 * The gencat program now parses the input file according to the charset
3665 selected by the LC_CTYPE category. This is important for stateful
3666 character sets. To make generating catalogs easier there is a way
3667 to overwrite the charset selected by the locale: before the first
3668 message or $ quote line the catalog can contain a line like
3670 $ codeset=ISO-8859-2
3672 to select the charset (ISO-8859-2 in this case).
3674 Implemented by Shinya Hanataka and Ulrich Drepper.
3676 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
3677 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
3678 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
3680 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
3681 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
3683 * The LANGUAGE environment variable is now ignored unless the locale is
3684 changed from the default "C" locale.
3686 * The usual bug fixes.
3690 * Greg McGary added runtime support for bounds checking using gcc's
3691 new -fbounded-pointers option. ix86 target is complete. PowerPC
3694 * Thorsten Kukuk added secure mode support to nscd.
3696 * The Berkeley db libraries have been removed.
3698 Related, the nss_db module is now in a separate package since it
3699 obviously requires a database library being available.
3701 * Wide character I/O streams implemented by Ulrich Drepper.
3703 * Functions from the extended socket API added by Ulrich Drepper.
3705 * Functions feenableexcept and fedisableexcept to control the
3706 behaviour of individual exceptions have been added by Andreas Jaeger.
3708 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
3710 * The resolver code has been updated from bind 8.2.3-T5B which supports
3711 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
3714 This change could in some situations effect backward compatibility. Since
3715 now `_res' is a thread-local instead of a global variable, modifying it
3716 in one thread does not have any effect in other threads.
3718 The resolver library was also extended to allow IPv6 as the transport
3719 protocol for the requests. This work was done by Stig Venaas.
3721 * Compatibility code for K&R C compilers has been removed from the
3722 header files. A ISO C compiler is needed to use the library
3723 (conforming to either C89 or C99 standard).
3725 * Complete rewrite of the localedef program to support multibyte character
3726 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
3727 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
3728 Implemented by Ulrich Drepper.
3730 Bruno Haible significantly improved the generation and use of the data
3731 structures for the wide character tables.
3733 * Plural handling in gettext implemented by Ulrich Drepper.
3735 * The utmp daemon has been removed.
3737 * The port to MIPS-Linux has been finished by Andreas Jaeger.
3739 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
3742 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
3744 * POSIX barriers implemented by Kaz Kylheku.
3746 * POSIX spawn function family implemented by Ulrich Drepper.
3748 * POSIX spinlocks are now available.
3750 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
3752 * the configure option --enable-kernel=X.Y.Z allows to strip out
3753 compatibility for kernel versions before X.Y.Z. This is currently only
3754 implemented for Linux.
3756 * the sockaddr_in6 structure changed. The IPv6 working group added a new
3757 field sin6_scope_id. This means that all programs using IPv6 should be
3758 recompiled. Don't expect binary compatibility with previous glibc
3761 * various conversion modules for IBM character sets contributed by
3764 * IA-64 port by Jes Sorensen and HJ Lu.
3778 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
3780 * New xdr functions are added; some rpc functions are now 64bit clean.
3782 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
3784 * Fixed known incompatibilities with glibc 2.0.
3786 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
3788 * Optimized a number of functions (especially the ELF dynamic loader).
3790 * Update timezone data files.
3792 * lots of charmaps corrections
3794 * some new locale definitions and charmaps
3799 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
3800 conform to POSIX member type requirements. Symbol versions have been
3801 adjusted as needed within the library, and for direct use by applications,
3802 but there is potential for problems if third-party libraries use
3803 struct timeval as part of their interface. This does not present
3804 a problem for X and other "essential" system libraries.
3806 * An additional locale model to support C++ Standard Library locale
3807 model and probably more was implemented by Ulrich Drepper.
3809 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
3812 * Miles Bader provided the `argp' function family to support hierachical
3813 command line argument parsing, layered on top of getopt.
3815 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
3817 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
3820 * scanf recognizes the %a and %A format for scanning floating point numbers.
3822 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
3823 information and interfaces for the available integer types.
3825 * about 130 new math functions were added to implement the ISO C9x math
3828 * the new header <complex.h> contains definitions of the complex math
3829 functions from ISO C 9X.
3831 * the new header <tgmath.h> defines generic macros to use complex or
3832 real valued functions.
3834 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
3836 * Andreas Jaeger provided a test suite for the math library.
3838 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
3840 * Ulrich Drepper added character set conversion functions (iconv).
3842 * Optimized string functions have been added.
3844 * The localedata addon is now part of glibc.
3846 * An implementation of profiling shared libraries was added by Ulrich Drepper.
3848 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
3849 daemon for NSS (nscd).
3851 Missing a better place here are some numbers on improvements. Under
3852 Linux 2.1.125 un-tar-ing the kernel sources takes
3856 using local files 12.19s 6.88s 22.91s
3858 using NIS 13.92s 8.91s 26.34s
3860 using NIS & nscd 10.37s 7.34s 25.30s
3862 using NIS+ 27.57s 30.37s 640.46s
3864 using NIS+ & nscd 10.25s 7.83s 26.51s
3866 using NIS & old nscd [1] 13.83s 8.32s 29.60s
3868 Keep in mind that non-namelookup related operations dominate above times.
3869 It was just a common complain that using NIS+ unpacking the kernel is
3872 [1] The old nscd implementation is not available anymore since it was
3873 distributed with glibc up to version 2.0.98 and thus is now replaced.
3875 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
3877 * Mark Kettenis provided a Hesiod NSS module.
3879 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
3880 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
3882 * rcmd can now handle netgroups (Dick Streefland).
3884 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
3887 * Support for the IPv6 protocol has been added to the socket API, as per the
3888 latest draft standards.
3890 * Support for Linux 2.2 has been added.
3892 * Interface changes relative to the latest 2.0.x release:
3893 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3894 addseverity NEW: Unix98
3895 alphasort64 NEW: LFS
3896 argp_err_exit_status NEW: argp, GNU ext
3897 argp_error NEW: argp, GNU ext
3898 argp_failure NEW: argp, GNU ext
3899 argp_help NEW: argp, GNU ext
3900 argp_parse NEW: argp, GNU ext
3901 argp_program_bug_address NEW: argp, GNU ext
3902 argp_program_version NEW: argp, GNU ext
3903 argp_program_version_hook NEW: argp, GNU ext
3904 argp_state_help NEW: argp, GNU ext
3905 argp_usage NEW: argp, GNU ext
3906 authdes_create NEW: Secure RPC
3907 authdes_getucred NEW: Secure RPC
3908 authdes_pk_create NEW: Secure RPC
3909 backtrace NEW: GNU ext.
3910 backtrace_symbols NEW: GNU ext.
3911 backtrace_symbols_fd NEW: GNU ext.
3913 cacosf NEW: ISO C 9x
3914 cacosh NEW: ISO C 9x
3915 cacoshf NEW: ISO C 9x
3916 cacoshl NEW: ISO C 9x
3917 cacosl NEW: ISO C 9x
3924 casinf NEW: ISO C 9x
3925 casinh NEW: ISO C 9x
3926 casinhf NEW: ISO C 9x
3927 casinhl NEW: ISO C 9x
3928 casinl NEW: ISO C 9x
3930 catanf NEW: ISO C 9x
3931 catanh NEW: ISO C 9x
3932 catanhf NEW: ISO C 9x
3933 catanhl NEW: ISO C 9x
3934 catanl NEW: ISO C 9x
3935 cbc_crypt NEW: Secure RPC
3939 ccoshf NEW: ISO C 9x
3940 ccoshl NEW: ISO C 9x
3946 cimagf NEW: ISO C 9x
3947 cimagl NEW: ISO C 9x
3948 clearerr_locked REMOVED
3949 clntunix_create NEW: sunrpc ext
3951 clog10 NEW: ISO C 9x
3952 clog10f NEW: ISO C 9x
3953 clog10l NEW: ISO C 9x
3963 cprojf NEW: ISO C 9x
3964 cprojl NEW: ISO C 9x
3966 crealf NEW: ISO C 9x
3967 creall NEW: ISO C 9x
3972 csinhf NEW: ISO C 9x
3973 csinhl NEW: ISO C 9x
3976 csqrtf NEW: ISO C 9x
3977 csqrtl NEW: ISO C 9x
3981 ctanhf NEW: ISO C 9x
3982 ctanhl NEW: ISO C 9x
3984 des_setparity NEW: Secure RPC
3985 ecb_crypt NEW: Secure RPC
3986 endutxent NEW: Unix98
3988 exp10f NEW: ISO C 9x
3989 exp10l NEW: ISO C 9x
3993 fattach NEW: STREAMS
3994 fdetach NEW: STREAMS
3998 feclearexcept NEW: ISO C 9x
3999 fegetenv NEW: ISO C 9x
4000 fegetexceptflag NEW: ISO C 9x
4001 fegetround NEW: ISO C 9x
4002 feholdexcept NEW: ISO C 9x
4004 feraiseexcept NEW: ISO C 9x
4005 ferror_locked REMOVED
4006 fesetenv NEW: ISO C 9x
4007 fesetexceptflag NEW: ISO C 9x
4008 fesetround NEW: ISO C 9x
4009 fetestexcept NEW: ISO C 9x
4010 feupdateenv NEW: ISO C 9x
4011 fflush_locked REMOVED
4015 fgets_unlocked NEW: GNU ext.
4016 fileno_locked REMOVED
4028 fputc_locked REMOVED
4029 fputs_unlocked NEW: GNU ext.
4030 fread_unlocked NEW: GNU ext.
4035 fstatvfs NEW: Unix98
4039 ftruncate64 NEW: LFS
4041 fwrite_unlocked NEW: GNU ext.
4042 gai_strerror NEW: IPv6
4046 getchar_locked REMOVED
4048 getdate_err NEW: Unix98
4049 getdate_r NEW: GNU ext.
4051 getnameinfo NEW: IPv6
4052 getnetname NEW: Secure RPC
4053 getpmsg NEW: STREAMS
4054 getpt NEW: Unix98 PTY
4055 getrlimit64 NEW: LFS
4056 getutxent NEW: Unix98
4057 getutxid NEW: Unix98
4058 getutxline NEW: Unix98
4059 glob64 NEW: GNU ext.
4060 globfree64 NEW: GNU ext.
4061 gnu_get_libc_release NEW: GNU ext.
4062 gnu_get_libc_version NEW: GNU ext.
4063 grantpt NEW: Unix98 PTY
4064 host2netname NEW: Secure RPC
4066 iconv_close NEW: iconv
4067 iconv_open NEW: iconv
4068 if_freenameindex NEW: IPv6
4069 if_indextoname NEW: IPv6
4070 if_nameindex NEW: IPv6
4071 if_nametoindex NEW: IPv6
4072 in6addr_any NEW: IPv6
4073 in6addr_loopback NEW: IPv6
4074 inet6_isipv4mapped NEW: IPv6
4075 isastream NEW: STREAMS
4076 iswblank NEW: GNU ext.
4077 key_decryptsession NEW: Secure RPC
4078 key_decryptsession_pk NEW: Secure RPC
4079 key_encryptsession NEW: Secure RPC
4080 key_encryptsession_pk NEW: Secure RPC
4081 key_gendes NEW: Secure RPC
4082 key_get_conv NEW: Secure RPC
4083 key_secretkey_is_set NEW: Secure RPC
4084 key_setnet NEW: Secure RPC
4085 key_setsecret NEW: Secure RPC
4086 llrint NEW: ISO C 9x
4087 llrintf NEW: ISO C 9x
4088 llrintl NEW: ISO C 9x
4089 llround NEW: ISO C 9x
4090 llroundf NEW: ISO C 9x
4091 llroundl NEW: ISO C 9x
4096 lrintf NEW: ISO C 9x
4097 lrintl NEW: ISO C 9x
4098 lround NEW: ISO C 9x
4099 lroundf NEW: ISO C 9x
4100 lroundl NEW: ISO C 9x
4102 makecontext NEW: Unix98
4103 mempcpy NEW: GNU ext.
4106 modify_ldt NEW: kernel
4110 nearbyint NEW: ISO C 9x
4111 nearbyintf NEW: ISO C 9x
4112 nearbyintl NEW: ISO C 9x
4113 netname2host NEW: Secure RPC
4114 netname2user NEW: Secure RPC
4115 nexttoward NEW: ISO C 9x
4116 nexttowardf NEW: ISO C 9x
4117 nexttowardl NEW: ISO C 9x
4121 passwd2des NEW: Secure RPC
4123 pow10f NEW: GNU ext.
4124 pow10l NEW: GNU ext.
4127 printf_size NEW: GNU ext.
4128 printf_size_info NEW: GNU ext.
4129 profil_counter REMOVED
4130 pthread_mutexattr_getkind_np REPLACED
4131 pthread_mutexattr_setkind_np REPLACED
4132 ptsname NEW: Unix98 PTY
4133 ptsname_r NEW: Unix98 PTY
4135 putchar_locked REMOVED
4136 putgrent NEW: GNU ext.
4138 putpmsg NEW: STREAMS
4139 pututxline NEW: Unix98
4143 readdir64_r NEW: LFS
4144 remquo NEW: ISO C 9x
4145 remquof NEW: ISO C 9x
4146 remquol NEW: ISO C 9x
4148 roundf NEW: ISO C 9x
4149 roundl NEW: ISO C 9x
4151 scalbln NEW: ISO C 9x
4152 scalblnf NEW: ISO C 9x
4153 scalblnl NEW: ISO C 9x
4155 sendfile NEW: kernel
4156 setcontext NEW: Unix98
4157 setrlimit64 NEW: LFS
4158 setutxent NEW: Unix98
4160 sigignore NEW: Unix98
4161 sigqueue NEW: POSIX.1b
4162 sigrelse NEW: Unix98
4163 sigset NEW: POSIX.1b
4164 sigtimedwait NEW: POSIX.1b
4165 sigwaitinfo NEW: POSIX.1b
4166 sincos NEW: GNU ext.
4167 sincosf NEW: GNU ext.
4168 sincosl NEW: GNU ext.
4172 strcasestr NEW: GNU ext.
4173 strtoimax NEW: ISO C 9x
4174 strtoumax NEW: ISO C 9x
4175 strverscmp NEW: GNU ext.
4176 svcauthdes_stats NEW: Secure RPC
4177 svcunix_create NEW: sunrpc etx
4178 svcunixfd_create NEW: sunrpc ext
4179 swapcontext NEW: Unix98
4180 tcgetsid NEW: Unix98 PTY
4181 tdestroy NEW: GNU ext.
4182 tgamma NEW: ISO C 9x
4183 tgammaf NEW: ISO C 9x
4184 tgammal NEW: ISO C 9x
4188 truncf NEW: ISO C 9x
4189 truncl NEW: ISO C 9x
4191 unlockpt NEW: Unix98 PTY
4192 updwtmpx NEW: Unix98
4193 user2netname NEW: Secure RPC
4194 utmpxname NEW: Unix98
4195 versionsort NEW: GNU ext.
4196 versionsort64 NEW: GNU ext.
4198 wcscasecmp NEW: GNU ext.
4199 wcsncasecmp NEW: GNU ext.
4200 wcsnlen NEW: GNU ext.
4201 wcstoimax NEW: ISO C 9x
4202 wcstoll NEW: ISO C 9x
4203 wcstoull NEW: ISO C 9x
4204 wcstoumax NEW: ISO C 9x
4206 wordexp NEW: POSIX.2
4207 wordfree NEW: POSIX.2
4208 write_profiling REMOVED
4209 xdecrypt NEW: Secure RPC
4210 xdr_authdes_cred NEW: Secure RPC
4211 xdr_authdes_verf NEW: Secure RPC
4212 xdr_cryptkeyarg NEW: Secure RPC
4213 xdr_cryptkeyarg2 NEW: Secure RPC
4214 xdr_cryptkeyres NEW: Secure RPC
4215 xdr_getcredres NEW: Secure RPC
4216 xdr_key_netstarg NEW: Secure RPC
4217 xdr_key_netstres NEW: Secure RPC
4218 xdr_keybuf NEW: Secure RPC
4219 xdr_keystatus NEW: Secure RPC
4220 xdr_netnamestr NEW: Secure RPC
4221 xdr_sizeof NEW: Secure RPC
4222 xdr_unixcred NEW: sunrpc ext
4223 xencrypt NEW: Secure RPC
4224 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4235 * inet_ntoa is thread-safe
4237 * updwtmp is moved from libutil to libc
4239 * rewrite of cbrt function
4241 * update of timezone data
4255 * add atoll function
4257 * fix complex problems in Berkeley DB code
4259 * fix math functions
4263 * fixed lots of header problems (especially Linux/GNU specific)
4265 * dynamic loader preserves all registers
4267 * Roland McGrath provided support for handling of auxiliary objects in
4268 the ELF dynamic loader.
4270 * support for parallel builds is improved
4274 * GNU extensions are no longer declared by default. To enable them you
4275 must define the macro `_GNU_SOURCE' in your program or compile with
4278 * The library has changed from using GNU ld symbol aliases to using weak
4279 symbols where available. The ELF object file format supports weak
4280 symbols; GNU ld also supports weak symbols in the a.out format. (There
4281 is also now support for other GNU ld extensions in ELF. Use the
4282 `--with-elf' option to configure to indicate you have ELF, and
4283 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
4284 of many files which contained only symbol aliases, reducing the size of
4285 the source and the compiled library; many other files were renamed to
4286 less cryptic names previously occupied by the symbol alias files.
4287 There is a new header file <elf.h> for programs which operate on
4288 files in the ELF format.
4290 * Converted to Autoconf version 2, so `configure' has more options.
4291 Run `configure --help' to see the details.
4293 * The library can now be configured to build profiling, highly-optimized
4294 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
4295 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
4296 `configure' enable building these extra libraries. The shared library is
4297 built by default when using both ELF and GNU ld. When shared libraries
4298 are enabled, the new library `-ldl' is available for arbitrary run-time
4299 loading of shared objects; its interface is defined in <dlfcn.h>. The
4300 new header file <link.h> gives access to the internals of the run-time
4301 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
4302 application of same name on other systems and it provides information
4303 about dynamically linked binaries.
4305 * The C library now provides the run-time support code for profiling
4306 executables compiled with `-pg'. Programs can control the profiling code
4307 through the interface in <sys/gmon.h>. The `gmon.out' files written by
4308 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
4309 the support for this file format was contributed by David Mosberger-Tang.
4311 * The math code has been replaced with a math library based on fdlibm from
4312 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
4313 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
4314 functions. The math functions now reside in a separate library, so
4315 programs using them will need to use `-lm' their linking commands.
4317 * John C. Bowman contributed optimized ix87 assembler inline functions.
4319 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
4320 mechanism similar to that found in Solaris 2. This is now used for the
4321 group, passwd, hosts, networks, services, protocols, rpc, ethers,
4322 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
4323 file controls what services are used for each individual database. This
4324 works by loading shared libraries with names specified in `nsswitch.conf',
4325 so service modules can be changed or added at any time without even
4326 relinking any program. Currently there are the file, db, and NIS based
4327 NSS services available.
4329 * The new functions `strtoq' and `strtouq' parse integer values from
4330 strings, like `strtol' and `strtoul', but they return `long long int' and
4331 `unsigned long long int' values, respectively (64-bit quantities).
4333 * The new functions `strtof' and `strtold' parse floating-point values from
4334 strings, like `strtod', but they return `float' and `long double' values,
4335 respectively (on some machines `double' and `long double' are the same).
4337 * Ulrich Drepper has contributed new implementations of the floating-point
4338 printing and reading code used in the `printf' family of functions and
4339 `strtod', `strtof', and `strtold'. These new functions are perfectly
4340 accurate, and much faster than the old ones.
4342 * The implementation of the POSIX locale model was completely rewritten by
4343 Ulrich Drepper. This includes the new programs `localedef' and `locale'
4344 to compile the POSIX locale definition.
4346 * The former dummy implementations of the strcoll and strxfrm function are
4347 now replaced by fully functional code contributed by Ulrich Drepper. The
4348 collation information comes from the POSIX locale definitions.
4350 * The new header <langinfo.h> defines an interface for accessing
4351 various locale-dependent data (using the locale chosen with `setlocale').
4353 * Ulrich Drepper has contributed a new suite of functions for operation on
4354 wide-character and multibyte-character strings, in <wchar.h>;
4355 and classification and case conversion of wide characters, in <wctype.h>.
4356 These new functions are conforming to the ISO C, Amendement 1 specification.
4358 * There is now a second implementation of the standard I/O library available.
4359 It comes from GNU libg++ as was written by Per Bothner, heavily modified
4360 by Hongjiu Lu and made thread safe by Ulrich Drepper.
4362 * You can now use positional parameter specifications in format strings
4363 for the `printf' and `scanf' families of functions. For example,
4364 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
4365 ``Number 6, Mr Jones''. This is mainly useful when providing different
4366 format strings for different languages, whose grammars may dictate
4367 different orderings of the values being printed. To support this
4368 feature, the interface for `register_printf_handler' has changed; see
4369 the header file <printf.h> for details.
4371 * The `printf' and `scanf' families of functions now understand a new
4372 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
4373 to group numbers as indicated by the locale; for `scanf' and friends, this
4374 says to accept as valid only a number with all the proper grouping
4375 separators in the right places. In the default "C" locale, numbers are
4376 not grouped; but locales for specific countries will define the usual
4377 conventions (i.e. separate thousands with `,' in the US locale).
4379 * The pgrp functions have been regularized, slightly incompatibly but much
4380 less confusingly. The core functions are now `getpgid' and `setpgid',
4381 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
4382 argument) and BSD `setpgrp' (identical to `setpgid') functions are
4383 provided for compatibility. There is no longer an incompatible `getpgrp'
4384 with an argument declared under _BSD_SOURCE; no BSD code uses it.
4386 * The new header file <fts.h> and suite of functions simplify programs that
4387 operate on directory trees. This code comes from 4.4 BSD.
4389 * The resolver code has been updated from the BIND 4.9.5-P1 release.
4390 Parts of the code were heavily modified by Ulrich Drepper to fit in the
4391 NSS scheme used in glibc.
4393 * There is a new malloc debugging hook `__memalign_hook'.
4395 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
4396 `unsigned int' in <sys/types.h>. These are for compatibility only and
4397 their use is discouraged.
4399 * The `-lmcheck' library to enable standard malloc debugging hooks is now
4400 done differently, so that it works even without GNU ld.
4402 * New function `euidaccess' checks allowed access to a file like `access',
4403 but using the effective IDs instead of the real IDs.
4405 * The time zone data files have been updated for the latest and greatest
4406 local time conventions of the countries of the world.
4408 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
4411 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
4412 for formatting floating-point numbers. They are provided only for
4413 compatibility; new programs should use `sprintf' instead. There are
4414 also equivalent function for the `long double' floating-point type and
4415 all functions also exist in a reentrant form.
4417 * The new auxiliary library `-lutil' from 4.4 BSD contains various
4418 functions for maintaining the login-record files (primarily of use to
4419 system programs such as `login'), and convenient functions for
4420 allocating and initializing a pseudo-terminal (pty) device.
4422 * Ulrich Drepper has contributed new support for System V style
4423 shared memory and IPC on systems that support it.
4425 * Ulrich Drepper has contributed several miscellaneous new functions found
4426 in System V: The `hsearch' family of functions provide an effective
4427 implementation of hash tables; `a64l' and `l64a' provide a very simple
4428 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
4431 * Ulrich Drepper has contributed new reentrant counterparts for the
4432 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
4434 * Ulrich Drepper has contributed new, highly-optimized versions of several
4435 string functions for the i486/Pentium family of processors.
4437 * Ulrich Drepper has updated the Linux-specific code, based largely
4438 on work done in Hongjiu Lu's version of GNU libc for Linux.
4439 The GNU library now supports Linux versions 2.0.10 and later,
4440 using the ELF object file format (i[3456]86-*-linux).
4442 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
4444 * David Mosberger-Tang and Richard Henderson have ported the C library
4445 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
4446 dynamic linking support for ELF/Alpha.
4448 * Richard Henderson contributed several Alpha optimized assembler function
4449 for arithmetic and string handling.
4451 * Ulrich Drepper has contributed a new set of message catalog functions to
4452 support multiple languages using the <libintl.h> interface, for use with
4453 his new package GNU gettext. Translation volunteers have contributed
4454 catalogs of the library's messages in Spanish, German, and Korean.
4456 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
4457 program and the `catgets' function for reading the catalog files it
4458 creates. (The <libintl.h> interface is preferred; we include the
4459 <nl_types.h> interface using `catgets' only for source compatibility with
4460 programs already written to use it.)
4462 * New header file <values.h> gives SVID-compatible names for <limits.h>
4465 * Various new macros, declarations, and small header files for compatibility
4468 * New function `group_member' is a convenient way to check if a process has
4469 a given effective group ID.
4471 * When using GCC 2.7 and later, the socket functions are now declared in a
4472 special way so that passing an argument of type `struct sockaddr_in *',
4473 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
4474 `struct sockaddr *' type, does not generate a type-clash warning.
4476 * New function `error' declared in header file <error.h> is a convenient
4477 function for printing error messages and optionally exiting; this is the
4478 canonical function used in GNU programs. The new functions `err', `warn',
4479 and friends in header file <err.h> are the canonical 4.4 BSD interface for
4480 doing the same thing.
4482 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
4483 POSIX.2 `glob' function to do ~ and {...} expansion.
4485 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
4486 `clearenv' which is used in POSIX.9 is also available.
4488 * New function `getsid' returns session ID number on systems that support it.
4490 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
4491 files <db.h> and <mpool.h> provide a rich set of functions for several
4492 types of simple databases stored in memory and in files, and <ndbm.h> is
4493 an old `ndbm'-compatible interface using the `db' functions. Link with
4494 `-ldb' to get these functions.
4496 * New macro `strdupa' copies a string like `strdup', but uses local stack
4497 space from `alloca' instead of dynamic heap space from `malloc'.
4499 * New function `strnlen' is like `strlen' but searches only a given maximum
4500 number of characters for the null terminator. `stpncpy', `strndup' and
4501 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
4504 * New function `statfs' in header <sys/statfs.h>.
4506 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
4507 provide convenient functions for operating on blocks of null-terminated
4510 * A new suite of functions in <utmp.h> handle all the details of reading
4511 and writing the utmp file.
4513 * An implementation of the NIS/YP(tm) based NSS service was contributed by
4516 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
4517 completely POSIX compliant and also implemented the extended functionality
4518 to handle alternate digit representation and alternate era date formats.
4520 * Ulrich Drepper provided an implementation of the `strptime' function
4521 defined in XPG4.2 which transforms a string into a `struct tm' value.
4523 * Paul Eggert provided the tzselect shell script as part of the timezone
4524 code. The shell script makes it easy to select the correct timezone
4527 * The implementation of the malloc family of functions is completely replaced
4528 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
4529 The implementation uses the mmap function (if available) and it is
4530 optimized for the use in multi threaded programs.
4532 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
4533 functions. This new functionality is usable by specifying a special
4534 salt string and it is compatible with implementation on *BSD systems.
4536 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
4537 `getsubopt' to handle second level command line options, `bsd_signal'
4538 to access BSD style `signal' functionality, the obsolete `regexp' style
4541 * the `lchown' function is available on system which support this
4544 * The implementation of the shadow password handling function was contributed
4547 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
4549 * POSIX.1g support was added. The <sys/select.h> header is available,
4550 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
4551 implementation of `getaddrinfo'.
4555 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
4557 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
4558 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
4560 * The new function `daemon' from 4.4 BSD is useful for server programs that
4561 want to put themselves in the background.
4563 * Joel Sherrill has contributed support for several standalone boards that
4564 run without an operating system.
4566 * `printf', `scanf' and friends now accept a `q' type modifier for long
4567 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
4569 * All of the code taken from BSD (notably most of the math and networking
4570 routines) has been updated from the BSD 4.4-Lite release.
4572 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
4574 * The new functions `getdomainname' and `setdomainname' fetch or change the
4575 YP/NIS domain name. These are system calls which exist on systems which
4578 * The time zone data files have been updated for the latest international
4581 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
4582 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
4586 * The C library now includes support for Sun RPC, from Sun's free
4587 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
4588 are included. (There is still no support for YP.)
4590 * Tom Quinn has contributed a port of the C library to SGI machines running
4591 Irix 4 (mips-sgi-irix4).
4593 * The new `lockf' function is a simplified interface to the locking
4594 facilities of `fcntl', included for compatibility.
4596 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
4598 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
4600 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
4603 * The error message printed by `assert' for a failed assertion now includes
4604 the name of the program (if using GNU ld) and the name of the calling
4605 function (with versions of GCC that support this).
4607 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
4609 * The library now includes the <sys/mman.h> header file and memory
4610 management functions `mmap', `munmap', `mprotect', `msync', and
4611 `madvise', on systems that support those facilities.
4613 * The interface for `mcheck' has changed slightly: the function called to
4614 abort the program when an allocation inconsistency is detected now takes
4615 an argument that indicates the type of failure. The new function
4616 `mprobe' lets you request a consistency check for a particular block at
4617 any time (checks are normally done only when you call `free' or `realloc'
4620 * It is now possible to easily cross-compile the C library, building on one
4621 system a library to run on another machine and/or operating system. All
4622 you need to do is set the variable `HOST_CC' in `configparms' to the
4623 native compiler for programs to run on the machine you are building on (a
4624 few generator programs are used on Unix systems); set `CC' to the
4627 * The new function `fexecve' (only implemented on the GNU system) executes
4628 a program file given a file descriptor already open on the file.
4632 * Brendan Kehoe has contributed most of a port to the DEC Alpha
4633 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
4635 * You can set the variable `libprefix' in `configparms' to specify a prefix
4636 to be prepended to installed library files; this makes it easy to install
4637 the GNU C library to be linked as `-lgnuc' or whatever.
4639 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
4640 copies a limited number of characters from a string, and returns the
4641 address of the last character written.
4643 * You no longer need to check for whether the installed `stddef.h' is
4644 compatible with the GNU C library. configure now checks for you.
4646 * You can now define a per-stream `fileno' function to convert the
4647 stream's cookie into an integral file descriptor.
4649 * ``malloc (0)'' no longer returns a null pointer. Instead, it
4650 allocates zero bytes of storage, and returns a unique pointer which
4651 you can pass to `realloc' or `free'. The behavior is undefined if
4652 you dereference this pointer.
4654 * The C library now runs on Sony NEWS m68k machines running either
4655 NewsOS 3 or NewsOS 4.
4657 * The new `syscall' function is a system-dependent primitive function
4658 for invoking system calls. It has the canonical behavior on Unix
4659 systems, including unreliable return values for some calls (such as
4660 `pipe', `fork' and `getppid').
4662 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
4663 to `EAGAIN', which is the preferred name. On systems whose kernels
4664 use two distinct codes, the C library now translates EWOULDBLOCK to
4665 EAGAIN in every system call function.
4669 * The GNU C Library Reference Manual is now distributed with the library.
4670 `make dvi' will produce a DVI file of the printed manual.
4671 `make info' will produce Info files that you can read on line using C-h i
4672 in Emacs or the `info' program.
4673 Please send comments on the manual to bug-glibc-manual@gnu.org.
4675 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
4677 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
4679 * Jason Merrill has contributed a port to the Sequent Symmetry running
4680 Dynix version 3 (i386-sequent-dynix).
4682 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
4683 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
4685 * New function `memory_warnings' lets you arrange to get warnings when
4686 malloc is running out of memory to allocate, like Emacs gives you.
4688 * The C library now contains the relocating allocator used in Emacs 19 for
4689 its editing buffers. This allocator (ralloc) minimizes allocation
4690 overhead and fragmentation by moving allocated regions around whenever it
4691 needs to. You always refer to a ralloc'd region with a "handle" (a
4692 pointer to a pointer--an object of type `void **').
4694 * There is a new `printf' format: `%m' gives you the string corresponding
4695 to the error code in `errno'.
4697 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
4698 or `%[' conversion, but instead of filling in a fixed-sized buffer you
4699 pass, the `a' modifier says to fill in a `char **' you pass with a
4702 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
4703 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
4704 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
4706 * `mkstemp' is a traditional Unix function to atomically create and open a
4707 uniquely-named temporary file.
4711 * The standard location for the file that says what the local timezone is
4712 has changed again. It is now `/usr/local/etc/localtime' (or more
4713 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
4715 * The distribution no longer contains any files with names longer than 14
4718 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
4719 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
4721 * New functions `ttyslot' and `syslog' from 4.4 BSD.
4725 * The configuration process has changed quite a bit. The `configure'
4726 script is now used just like the configuration scripts for other GNU
4727 packages. The `sysdeps' directory hierarchy is much rearranged.
4728 The file `INSTALL' explains the new scheme in detail.
4730 * The header files no longer need to be processed into ANSI C and
4731 traditional C versions. There is just one set of files to install, and
4732 it will work with ANSI or old C compilers (including `gcc -traditional').
4734 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
4735 MIPS DECStation running Ultrix 4.
4737 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
4738 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
4739 made itself into a shared library.
4741 * Yet further improved support for the i386, running 4.3 BSD-like systems
4742 (such as Mach 3 with the Unix single-server), or System V.
4744 * New function `strncasecmp' to do case-insensitive string comparison
4745 with limited length.
4747 * New function `strsep' is a reentrant alternative to `strtok'.
4749 * New functions `scandir' and `alphasort' for searching directories.
4751 * New function `setenv' is a better interface to `putenv'.
4753 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
4754 function for traversing a directory tree.
4756 * The GNU obstack package is now also part of the C library.
4757 The new function `open_obstack_stream' creates a stdio stream that
4758 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
4759 formatted output directly to an obstack.
4761 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
4762 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
4764 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
4766 * The new functions `strfry' and `memfrob' do mysterious and wonderful
4767 things to your strings.
4769 * There are some new test programs: test-fseek, testmb, and testrand.
4771 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
4772 These ports are not finished, but are a good starting place for really
4773 supporting those systems.
4775 * `/etc/localtime' is now the standard location for the file that says what
4776 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
4777 This follows the general principle that `/etc' is the place for all local
4778 configuration files.
4780 * The C library header files now use `extern "C"' when used by the C++
4781 compiler, so the C library should now work with C++ code.
4783 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
4784 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
4787 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
4788 function which uses the `merge sort' algorithm, and is said to be
4789 significantly faster than the old GNU `qsort' function. Merge sort is
4790 now the standard `qsort' function. The new algorithm can require a lot
4791 of temporary storage; so, the old sorting function is called when the
4792 required storage is not available.
4794 * The C library now includes Michael Glad's Ultra Fast Crypt, which
4795 provides the Unix `crypt' function, plus some other entry points.
4797 * The code and header files taken from 4.4 BSD have been updated with the
4798 latest files released from Berkeley.
4800 ----------------------------------------------------------------------
4801 Copyright information:
4803 Copyright (C) 1992-2018 Free Software Foundation, Inc.
4805 Permission is granted to anyone to make or distribute verbatim copies
4806 of this document as received, in any medium, provided that the
4807 copyright notice and this permission notice are preserved,
4808 thus giving the recipient permission to redistribute in turn.
4810 Permission is granted to distribute modified versions
4811 of this document, or of portions of it,
4812 under the above conditions, provided also that they
4813 carry prominent notices stating who last changed them.
4816 version-control: never