1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2018 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <https://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
12 * <math.h> functions that round their results to a narrower type are added
13 from TS 18661-1:2014 and TS 18661-3:2015:
15 - fadd, faddl, daddl and corresponding fMaddfN, fMaddfNx, fMxaddfN and
18 - fsub, fsubl, dsubl and corresponding fMsubfN, fMsubfNx, fMxsubfN and
21 - fmul, fmull, dmull and corresponding fMmulfN, fMmulfNx, fMxmulfN and
24 * Nominative and genitive month names are now supported for the Catalan and
25 Czech languages. The Catalan and Greek languages now support abbreviated
26 alternative month names.
28 * Building and running on GNU/Hurd systems now works without out-of-tree
31 Deprecated and removed features, and other changes affecting compatibility:
33 * The nonstandard header files <libio.h> and <_G_config.h> are no longer
34 installed. Software that was using either header should be updated to
35 use standard <stdio.h> interfaces instead.
37 * The stdio functions 'getc' and 'putc' are no longer defined as macros.
38 This was never required by the C standard, and the macros just expanded
39 to call alternative names for the same functions. If you hoped getc and
40 putc would provide performance improvements over fgetc and fputc, instead
41 investigate using (f)getc_unlocked and (f)putc_unlocked, and, if
42 necessary, flockfile and funlockfile.
44 * All stdio functions now treat end-of-file as a sticky condition. If you
45 read from a file until EOF, and then the file is enlarged by another
46 process, you must call clearerr or another function with the same effect
47 (e.g. fseek, rewind) before you can read the additional data. This
48 corrects a longstanding C99 conformance bug. It is most likely to affect
49 programs that use stdio to read interactive input from a terminal.
52 * The macros 'major', 'minor', and 'makedev' are now only available from
53 the header <sys/sysmacros.h>; not from <sys/types.h> or various other
54 headers that happen to include <sys/types.h>. These macros are rarely
55 used, not part of POSIX nor XSI, and their names frequently collide with
56 user code; see https://sourceware.org/bugzilla/show_bug.cgi?id=19239 for
59 <sys/sysmacros.h> is a GNU extension. Portable programs that require
60 these macros should first include <sys/types.h>, and then include
61 <sys/sysmacros.h> if __GNU_LIBRARY__ is defined.
63 * The tilegx*-*-linux-gnu configurations are no longer supported.
65 * The obsolete function ustat is no longer available to newly linked
66 binaries; the headers <ustat.h> and <sys/ustat.h> have been removed. This
67 function has been deprecated in favor of fstatfs and statfs.
69 Changes to build and runtime requirements:
71 [Add changes to build and runtime requirements here]
73 Security related changes:
75 [Add security related changes here]
77 The following bugs are resolved with this release:
79 [The release manager will add the list generated by
80 scripts/list-fixed-bugs.py just before the release.]
87 * The GNU C Library can now be compiled with support for building static
88 PIE executables (See --enable-static-pie in INSTALL). These static PIE
89 executables are like static executables but can be loaded at any address
90 and provide additional security hardening benefits at the cost of some
91 memory and performance. When the library is built with --enable-static-pie
92 the resulting libc.a is usable with GCC 8 and above to create static PIE
93 executables using the GCC option '-static-pie'. This feature is currently
94 supported on i386, x86_64 and x32 with binutils 2.29 or later, and on
95 aarch64 with binutils 2.30 or later.
97 * Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin, cosf,
98 sinf, sincosf and tan with FMA, contributed by Arjan van de Ven and
101 * Optimized x86-64 trunc and truncf for processors with SSE4.1.
103 * Optimized generic expf, exp2f, logf, log2f, powf, sinf, cosf and sincosf.
105 * In order to support faster and safer process termination the malloc API
106 family of functions will no longer print a failure address and stack
107 backtrace after detecting heap corruption. The goal is to minimize the
108 amount of work done after corruption is detected and to avoid potential
109 security issues in continued process execution. Reducing shutdown time
110 leads to lower overall process restart latency, so there is benefit both
111 from a security and performance perspective.
113 * The abort function terminates the process immediately, without flushing
114 stdio streams. Previous glibc versions used to flush streams, resulting
115 in deadlocks and further data corruption. This change also affects
116 process aborts as the result of assertion failures.
118 * On platforms where long double has the IEEE binary128 format (aarch64,
119 alpha, mips64, riscv, s390 and sparc), the math library now implements
120 _Float128 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015.
121 These are the same interfaces added in version 2.26 for some platforms where
122 this format is supported but is not the format of long double.
124 * On platforms with support for _Float64x (aarch64, alpha, i386, ia64,
125 mips64, powerpc64le, riscv, s390, sparc and x86_64), the math library now
126 implements interfaces for that type, as defined by ISO/IEC TS
127 18661-3:2015. These are corresponding interfaces to those supported for
130 * The math library now implements interfaces for the _Float32, _Float64 and
131 _Float32x types, as defined by ISO/IEC TS 18661-3:2015. These are
132 corresponding interfaces to those supported for _Float128.
134 * glibc now implements the memfd_create and mlock2 functions on Linux.
136 * Support for memory protection keys was added. The <sys/mman.h> header now
137 declares the functions pkey_alloc, pkey_free, pkey_mprotect, pkey_set,
140 * The copy_file_range function was added.
142 * Optimized memcpy, mempcpy, memmove, and memset for sparc M7.
144 * The ldconfig utility now processes `include' directives using the C/POSIX
145 collation ordering. Previous glibc versions used locale-specific
146 ordering, the change might break systems that relied on that.
148 * Support for two grammatical forms of month names has been added.
149 In a call to strftime, the "%B" and "%b" format specifiers will now
150 produce the grammatical form required when the month is used as part
151 of a complete date. New "%OB" and "%Ob" specifiers produce the form
152 required when the month is named by itself. For instance, in Greek
153 and in many Slavic and Baltic languages, "%B" will produce the month
154 in genitive case, and "%OB" will produce the month in nominative case.
156 In a call to strptime, "%B", "%b", "%h", "%OB", "%Ob", and "%Oh"
157 are all valid and will all accept any known form of month
158 name---standalone or complete, abbreviated or full. In a call to
159 nl_langinfo, the query constants MON_1..12 and ABMON_1..12 return
160 the strings used by "%B" and "%b", respectively. New query
161 constants ALTMON_1..12 and _NL_ABALTMON_1..12 return the strings
162 used by "%OB" and "%Ob", respectively.
164 In a locale definition file, use "alt_mon" and "ab_alt_mon" to
165 define the strings for %OB and %Ob, respectively; these have the
166 same syntax as "mon" and "abmon". These arrays are optional; if they
167 are not provided then they have the same content as "mon" and "abmon",
170 These features are provided for locales which define "alt_mon" and/or
171 "ab_alt_mon" in their locale source data. This release includes such
172 alternative month name data for the following languages: Belarusian,
173 Croatian, Greek, Lithuanian, Polish, Russian, and Ukrainian.
175 This feature is currently a GNU extension, but it is expected to
176 be added to the next revision of POSIX, and it is also already
177 available on some BSD-derived operating systems.
179 This feature will cause existing statically compiled applications
180 to fail to load locales and fall back to the builtin C/POSIX locales.
181 See notes below for other changes affecting compatibility.
183 * Support for the RISC-V ISA running on Linux has been added. This port
184 requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
185 for the following ISA and ABI pairs:
191 Deprecated and removed features, and other changes affecting compatibility:
193 * Statically compiled applications attempting to load locales compiled for the
194 GNU C Library version 2.27 will fail and fall back to the builtin C/POSIX
195 locale. The reason for this is that the addition of the new "%OB" and "%Ob",
196 support for two grammatical forms of the month names, also extends the locale
197 data binary format. Static applications needing locale support must be
198 recompiled to match the runtime and data they are deployed with. In some
199 distributions there is an upgrade window where dynamically linked applications
200 may use a new library but the old locale data and also fall back to the
201 builtin C/POSIX locales; restarting the application process is sufficient to
204 * Support for statically linked applications which call dlopen is deprecated
205 and will be removed in a future version of glibc. Applications which call
206 dlopen need to be linked dynamically instead.
208 * Support for old programs which use internal stdio data structures and
209 functions is deprecated. This includes programs which use the C++ streams
210 provided by libstdc++ in GCC 2.95. Programs which use the internal
211 symbols _IO_adjust_wcolumn, _IO_default_doallocate, _IO_default_finish,
212 _IO_default_pbackfail, _IO_default_uflow, _IO_default_xsgetn,
213 _IO_default_xsputn, _IO_doallocbuf, _IO_do_write, _IO_file_attach,
214 _IO_file_close, _IO_file_close_it, _IO_file_doallocate, _IO_file_fopen,
215 _IO_file_init, _IO_file_jumps, _IO_fileno, _IO_file_open,
216 _IO_file_overflow, _IO_file_read, _IO_file_seek, _IO_file_seekoff,
217 _IO_file_setbuf, _IO_file_stat, _IO_file_sync, _IO_file_underflow,
218 _IO_file_write, _IO_file_xsputn, _IO_flockfile, _IO_flush_all,
219 _IO_flush_all_linebuffered, _IO_free_backup_area, _IO_free_wbackup_area,
220 _IO_init, _IO_init_marker, _IO_init_wmarker, _IO_iter_begin, _IO_iter_end,
221 _IO_iter_file, _IO_iter_next, _IO_least_wmarker, _IO_link_in,
222 _IO_list_all, _IO_list_lock, _IO_list_resetlock, _IO_list_unlock,
223 _IO_marker_delta, _IO_marker_difference, _IO_remove_marker, _IO_seekmark,
224 _IO_seekwmark, _IO_str_init_readonly, _IO_str_init_static,
225 _IO_str_overflow, _IO_str_pbackfail, _IO_str_seekoff, _IO_str_underflow,
226 _IO_switch_to_main_wget_area, _IO_switch_to_wget_mode,
227 _IO_unsave_wmarkers, _IO_wdefault_doallocate, _IO_wdefault_finish,
228 _IO_wdefault_pbackfail, _IO_wdefault_setbuf, _IO_wdefault_uflow,
229 _IO_wdefault_xsgetn, _IO_wdefault_xsputn, _IO_wdoallocbuf, _IO_wdo_write,
230 _IO_wfile_jumps, _IO_wfile_overflow, _IO_wfile_sync, _IO_wfile_underflow,
231 _IO_wfile_xsputn, _IO_wmarker_delta, or _IO_wsetb may stop working with a
232 future version of glibc. Unlike other symbol removals, these old
233 applications will not be supported using compatibility symbols.
235 * On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
236 defined by <sys/ptrace.h>.
238 * libm no longer supports SVID error handling (calling a user-provided
239 matherr function on error) or the _LIB_VERSION variable to control error
240 handling. (SVID error handling and the _LIB_VERSION variable still work
241 for binaries linked against older versions of the GNU C Library.) The
242 libieee.a library is no longer provided. math.h no longer defines struct
243 exception, or the macros X_TLOSS, DOMAIN, SING, OVERFLOW, UNDERFLOW,
244 TLOSS, PLOSS and HUGE.
246 * The libm functions pow10, pow10f and pow10l are no longer supported for
247 new programs. Programs should use the standard names exp10, exp10f and
248 exp10l for these functions instead.
250 * The mcontext_t type is no longer the same as struct sigcontext. On
251 platforms where it was previously the same, this changes the C++ name
252 mangling for interfaces involving this type.
254 * The add-ons mechanism for building additional packages at the same time as
255 glibc has been removed. The --enable-add-ons configure option is now
258 * The --without-fp configure option is now ignored. Whether hardware
259 floating-point instructions are used is now configured based on whether
260 the compiler used at configure time (without any options implied by a
261 --with-cpu= configure option) uses such instructions.
263 * The res_hnok, res_dnok, res_mailok and res_ownok functions now check that
264 the specified string can be parsed as a domain name.
266 * In the malloc_info output, the <heap> element may contain another <aspace>
267 element, "subheaps", which contains the number of sub-heaps.
269 * The libresolv function p_secstodate is no longer supported for new
272 * The tilepro-*-linux-gnu configuration is no longer supported.
274 * The nonstandard header files <libio.h> and <_G_config.h> are deprecated
275 and will be removed in a future release. Software that is still using
276 either header should be updated to use standard <stdio.h> interfaces
279 libio.h was originally the header for a set of supported GNU extensions,
280 but they have not been maintained as such in many years, they are now
281 standing in the way of improvements to stdio, and we don't think there are
282 any remaining external users. _G_config.h was never intended for public
283 use, but predates the bits convention.
285 Changes to build and runtime requirements:
287 * bison version 2.7 or later is required to generate code in the 'intl'
290 Security related changes:
292 CVE-2009-5064: The ldd script would sometimes run the program under
293 examination directly, without preventing code execution through the
294 dynamic linker. (The glibc project disputes that this is a security
295 vulnerability; only trusted binaries must be examined using the ldd
298 CVE-2017-15670: The glob function, when invoked with GLOB_TILDE,
299 suffered from a one-byte overflow during ~ operator processing (either
300 on the stack or the heap, depending on the length of the user name).
301 Reported by Tim Rühsen.
303 CVE-2017-15671: The glob function, when invoked with GLOB_TILDE,
304 would sometimes fail to free memory allocated during ~ operator
305 processing, leading to a memory leak and, potentially, to a denial
308 CVE-2017-15804: The glob function, when invoked with GLOB_TILDE and
309 without GLOB_NOESCAPE, could write past the end of a buffer while
310 unescaping user names. Reported by Tim Rühsen.
312 CVE-2017-17426: The malloc function, when called with an object size near
313 the value SIZE_MAX, would return a pointer to a buffer which is too small,
314 instead of NULL. This was a regression introduced with the new malloc
315 thread cache in glibc 2.26. Reported by Iain Buclaw.
317 CVE-2017-1000408: Incorrect array size computation in _dl_init_paths leads
318 to the allocation of too much memory. (This is not a security bug per se,
319 it is mentioned here only because of the CVE assignment.) Reported by
322 CVE-2017-1000409: Buffer overflow in _dl_init_paths due to miscomputation
323 of the number of search path components. (This is not a security
324 vulnerability per se because no trust boundary is crossed if the fix for
325 CVE-2017-1000366 has been applied, but it is mentioned here only because
326 of the CVE assignment.) Reported by Qualys.
328 CVE-2017-16997: Incorrect handling of RPATH or RUNPATH containing $ORIGIN
329 for AT_SECURE or SUID binaries could be used to load libraries from the
332 CVE-2018-1000001: Buffer underflow in realpath function when getcwd function
333 succeeds without returning an absolute path due to unexpected behaviour
334 of the Linux kernel getcwd syscall. Reported by halfdog.
336 CVE-2018-6485: The posix_memalign and memalign functions, when called with
337 an object size near the value of SIZE_MAX, would return a pointer to a
338 buffer which is too small, instead of NULL. Reported by Jakub Wilk.
340 CVE-2018-6551: The malloc function, when called with an object size near
341 the value of SIZE_MAX, would return a pointer to a buffer which is too
342 small, instead of NULL.
344 The following bugs are resolved with this release:
346 [866] glob: glob should match dangling symlinks
347 [1062] glob: sysdeps/generic/glob.c merge from gnulib (part 3 of 3)
348 [2522] localedata: ca_ES@valencia: new Valencian (meridional Catalan)
350 [5997] math: Very slow execution of sinf function
351 [10580] localedata: hr_HR: updated locale
352 [10871] locale: 'mon' array should contain both nominative and genitive
354 [12349] localedata: eu_ES: incorrect thousands separator
355 [13605] localedata: shn_MM: new Shan locale
356 [13805] localedata: ru_RU: currency should use ',' as radix point
357 [13953] localedata: km_KH: locale update
358 [13994] localedata: mjw_IN: new locale
359 [14121] build: make writes .mo files in po directory
360 [14333] libc: Fix the race between atexit() and exit()
361 [14681] dynamic-link: _dl_get_origin leaks memory via executable link map.
362 [14925] localedata: bn_*: LC_IDENTIFICATION.language key should be
364 [15260] localedata: LC_MESSAGES.{yes,no}{str,expr}: various errors
365 [15261] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of full-
366 width Latin characters
367 [15332] localedata: es_CU: locale update
368 [15436] stdio: Don't close or flush stdio streams on abort
369 [15537] localedata: lv_LV: invalid collation for Latvian diacritical
371 [16148] localedata: ca_ES: incorrect thousands separator
372 [16750] dynamic-link: ldd should not try to execute the binaries
374 [16777] localedata: pl_PL: incorrect thousands separator in locale
375 [16905] localedata: hanzi: new collation
376 [17563] localedata: cmn_TW: add hanzi collation
377 [17750] localedata: wrong collation order of diacritics in most locales
378 [17804] libc: scandirat fails with ENOMEM because it checks for errno even
380 [17956] build: Build fails on missing definitions from header file
381 nss/nss.h when Mozilla NSS is used for cryptography
382 [18203] libc: realpath() does not handle unreachable paths correctly
383 [18572] dynamic-link: [arm] Lazy TLSDESC relocation has data race
384 [18812] localedata: kab_DZ: new Kabyle Algeria locale
385 [18822] libc: Internal functions are called via PLT
386 [18858] string: _HAVE_STRING_ARCH_xxx aren't defined for i386 nor x86_64
387 [19170] libc: __gmon_start__ defined in hppa in crtn.S
388 [19574] libc: glibc should support building static PIE binaries
389 [19852] localedata: charmaps/UTF-8: incorrect wcwidth for U+3099 and
391 [19971] glob: glob: Do not skip entries with zero d_ino values
392 [19982] localedata: fr.po: spelling mistake for error code EXDEV
393 [20008] localedata: km_KH: convert to translit_neutral
394 [20009] localedata: tr_TR: convert LC_CTYPE to i18n
395 [20142] math: [x86_64] Add SSE4.1 trunc, truncf
396 [20204] dynamic-link: _dl_open_hook and _dlfcn_hook hardening
397 [20482] localedata: de_CH: abbreviated weekdays should be two letters
398 [20498] localedata: miq_NI: new Mískitu / Miskito (miq) language locale
400 [20532] nss: getaddrinfo uses errno and h_errno without guaranteeing
401 they're set, wrong errors returned by gaih_inet when lookup functions
403 [20756] localedata: [PATCH] Use Unicode wise thousands separator
404 [20826] network: posix/tst-getaddrinfo5 fails on hosts without network
406 [20952] localedata: yuw_PG: new locale
407 [21084] localedata: charmaps/IBM858: new codepage
408 [21161] manual: [PATCH] fix typo in manual/arith.texi on strtoul prototype
409 [21242] libc: assert gives pedantic warning in old gcc versions
410 [21265] dynamic-link: _dl_runtime_resolve isn't compatible with Intel C++
411 __regcall calling convention
412 [21309] math: signed integer overflow in sysdeps/ieee754/dbl-64/e_pow.c
413 [21326] libc: C99 functions are not declared for C++11 and later if
414 _GNU_SOURCE is not predefined by g++
415 [21457] libc: sys/ucontext.h namespace
416 [21530] libc: tmpfile() should be implemented using O_TMPFILE
417 [21660] math: GCC fails to compile a formula with tgmath.h
418 [21672] nptl: sys-libs/glibc on ia64 crashes on thread exit: signal
419 SIGSEGV, Segmentation fault: pthread_create.c:432: __madvise
420 (pd->stackblock, freesize - PTHREAD_STACK_MIN, MADV_DONTNEED);
421 [21684] math: tgmath.h handling of complex integers
422 [21685] math: tgmath.h handling of bit-fields
423 [21686] math: tgmath.h handling of __int128
424 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
426 [21745] libc: [powerpc64le] Extra PLT reference with --enable-stack-
428 [21750] localedata: column width of characters incompatible with classical
430 [21754] malloc: malloc: Perform as little work as possible after heap
431 consistency check failures
432 [21780] libc: hppa: p{read,write}v2 does not set ENOSUP on invalid flag
433 [21790] libc: Missing __memset_zero_constant_len_parameter in libc.so
434 [21791] string: Unused XXX_chk_XXX functions in libc.a
435 [21815] dynamic-link: FAIL: elf/tst-prelink-cmp with GCC is defaulted to
437 [21836] localedata: Removed redundant data (LC_MONETARY) in various Indian
439 [21845] localedata: Added new Locale bho_NP
440 [21853] localedata: Fix abday Which looks same as day in zh_SG
441 [21854] localedata: Added New Locale en_SC
442 [21864] libc: xmalloc.o is compiled with -DMODULE_NAME=libc
443 [21871] dynamic-link: _dl_runtime_resolve_avx_opt is slower than
444 _dl_runtime_resolve_avx_slow
445 [21885] network: getaddrinfo: gethosts does not release resolver context
446 on memory allocation failure
447 [21899] libc: XPG4.2 sigaction namespace
448 [21908] dynamic-link: dynamic linker broke on ia64 (mmap2 consolidation is
450 [21913] libc: static binaries SIGSEGV in __brk when host's gcc is pie-by-
452 [21915] nss: nss_files can return with NSS_STATUS_SUCCESS and a clobbered
453 errno value, causing getaddrinfo to fail
454 [21920] localedata: Fix p_cs_precedes/n_cs_precedes for mt_MT
455 [21922] network: getaddrinfo with AF_INET/AF_INET6 returns EAI_NONAME
456 instead of EAI_NODATA
457 [21928] libc: sys/ptrace.h: remove obsolete temporary development Linux
458 constant PTRACE_SEIZE_DEVEL
459 [21930] math: C-only gcc builtins used in <math.h> isinf
460 [21932] network: Unpaired __resolv_context_get in generic get*_r
462 [21941] math: powerpc: Wrong register constraint for xssqrtqp in sqrtf128
463 [21944] libc: sigval namespace
464 [21951] localedata: Update hanzi collation by stroke
465 [21955] math: Wrong alignment of L(SP_RANGE)/L(SP_INF_0) in
466 sysdeps/x86_64/fpu/e_expf.S
467 [21956] libc: Stack allocation in MIPS syscall impl (ubounded stack
468 allocation in syscall loops)
469 [21959] localedata: Fix Country name for xh_ZA
470 [21960] localedata: Fix abmon for bem_ZM
471 [21966] math: AVX2 mathvec functions use FMA without checking
472 [21967] math: When 512-bit AVX2 wrapper functions in mathvec are used?
473 [21971] localedata: Added New Locale for mfe_MU
474 [21972] libc: assert macro requires operator== (int) for its argument type
475 [21973] math: [sparc] libm missing sqrtl compat symbol
476 [21974] libc: Remove __bb_init_func and __bb_exit_func
477 [21982] string: stratcliff.c: error: assuming signed overflow does not
479 [21986] stdio: __guess_grouping is called incorrectly
480 [21987] math: [sparc32] wrong bits/long-double.h installed
481 [22019] localedata: Wrong placement of monetary symbol in el_GR (negative
483 [22022] localedata: Missing country_name for mni_IN
484 [22023] localedata: Removed redundant data (LC_TIME and LC_MESSAGES) for
486 [22025] locale: iconv: Inconsistency between pointer mangling and NULL
488 [22026] locale: iconv_open: heap overflow on gconv_init failure
489 [22028] math: bits/math-finite.h _MSUF_ expansion namespace
490 [22035] math: [m68k] bits/math-inline.h macro namespace
491 [22038] localedata: Fix abbreviated weeks and months for Somali
492 [22044] localedata: Remove redundant data for Limburgish Language
493 [22050] malloc: Linking with -lmcheck does not hook
494 __malloc_initialize_hook correctly
495 [22051] libc: zero terminator in the middle of glibc's .eh_frame
496 [22052] malloc: malloc failed to compile with GCC 7 and -O3
497 [22070] localedata: charmaps/UTF-8: wcwidth for
498 Prepended_Concatenation_Mark codepoints set to 0 (should be 1)
499 [22074] localedata: charmaps/UTF-8: wcwidth for U+1160-U+11FF (Hangul
500 Jungseong and Jongseong) should be 0
501 [22078] nss: nss_files performance issue in multi mode
502 [22082] math: bits/math-finite.h exp10 condition
503 [22086] libc: pcprofiledump incorrect cross-endian condition
504 [22093] dynamic-link: ld.so no longer searches in .../x86_64
505 [22095] network: Name server address allocation memory leak in resolv.conf
507 [22096] network: __resolv_conf_attach can incorrectly free passed conf
509 [22100] localedata: om_KE: LC_TIME: copy redundant data from om_ET
510 [22101] dynamic-link: Dynamic loader must ignore "debug" shared objects
512 [22111] malloc: malloc: per thread cache is not returned when thread exits
513 [22112] localedata: Fix LC_TELEPHONE/LC_NAME for az_AZ
514 [22134] libc: [linux] implement fexecve with execveat
515 [22142] libc: [powerpc] printf oupts a wrong value of DBL_MAX on ppc64 and
517 [22145] libc: ttyname() gives up too early in the face of namespaces
518 [22146] math: C++ build issue with float128 on x86_64
519 [22153] nptl: nptl: save error code before process termination
520 [22156] libc: [hppa,ia64,microblaze] Executable stack default
521 [22159] malloc: malloc: MALLOC_CHECK_ broken with --enable-tunables=no
522 [22161] nscd: nscd cache prune for netgroups hangs after timeout bump
523 [22165] libc: [hppa] Text relocations in libc.so
524 [22180] libc: destructor registered via __cxa_atexit is called twice
525 [22183] glob: commit 5554304f0ddd ("posix: Allow glob to match dangling
526 symlinks") cause "make" segfaults
527 [22189] math: [powerpc] math_private.h definitions of math_opt_barrier and
529 [22207] libc: FAIL: stdlib/test-atexit-race
530 [22225] math: nearbyint arithmetic moved before feholdexcept
531 [22229] math: [sparc32] missing copysignl, fabsl, fmal compat symbols
532 [22235] math: iscanonical in C++ and float128
533 [22243] math: log2(0) and log10(0) are wrong in downward rounding without
534 the svid compat wrapper
535 [22244] math: ynf and yn are wrong without the svid compat wrapper
536 [22273] libc: Improper assert in Linux posix_spawn implementation
537 [22284] libc: -pg -pie doesn't work
538 [22292] locale: localedef exits with error 4 when it should be error 1
539 [22294] locale: Allow "" for int_currency_symbol definition in locales.
540 [22295] locale: Don't warn on non-symbolic characters in locale sources in
542 [22296] math: glibc 2.26: signbit build issue with Gcc 5.5.0 on x86_64
543 [22298] nptl: x32: lockups on recursive pthread_mutex_lock after upgrade
545 [22299] dynamic-link: Problem with $PLATFORM on x86_64 platform
546 [22320] glob: Buffer overflow in glob with GLOB_TILDE (CVE-2017-15670)
547 [22321] libc: sysconf(_SC_IOV_MAX) returns -1 on Linux
548 [22322] libc: [mips64] wrong bits/long-double.h installed
549 [22325] glob: Memory leak in glob with GLOB_TILDE (CVE-2017-15671)
550 [22332] glob: Buffer overflow in glob with GLOB_TILDE in unescaping
552 [22336] localedata: cs_CZ LC_COLLATE does not use i18n
553 [22343] malloc: Integer overflow in posix_memalign
554 [22347] libc: getrandom() returns the number of bytes that were copied to
555 the buffer even though the comments say "Return 0 on success and -1 on
557 [22353] string: sysdeps/i386/i586/strcpy.S isn't maintainable
558 [22362] libc: Installed crt1.o, crti,.o and crtn.o files are used with
560 [22370] dynamic-link: Incorrect note padding check
561 [22375] libc: malloc returns pointer from tcache_get when should return
562 NULL (CVE-2017-17426)
563 [22377] math: iseqsig, float128 and C++
564 [22382] localedata: Error in tpi_PG locale
565 [22387] localedata: Replace unicode sequences <Uxxxx> for characters
566 inside the ASCII printable range
567 [22402] math: [powerpc64le] __MATH_TG does not support _Float128 for
569 [22403] localedata: Slash needs escaping in some locales
570 [22408] malloc: malloc_info access heaps without arena lock, ignores heaps
571 [22409] network: res_hnok does not accept some host names used on the
573 [22412] network: res_dnok, res_hnok should perform syntax checks
574 [22413] network: ns_name_pton ignores syntactically invalid trailing
576 [22415] stdio: setvbuf can lead to invalid free/segfault
577 [22432] build: Non-deterministic build
578 [22439] malloc: malloc_info should compute summary statistics for all sub-
580 [22442] network: if_nametoindex could report index for the wrong
582 [22446] build: aliasing violation calling readlink in handle_request
583 [22447] build: unsafe call to strlen with a non-string in getlogin_r.c
584 [22457] libc: Generic preadv/pwritev incorrectly calls __posix_memalign
585 [22459] libc: FAIL: elf/check-localplt with __stack_chk_fail related to
586 __nscd_hash/__nss_hash
587 [22463] network: p_secstodate overflow handling
588 [22469] localedata: pl_PL LC_COLLATE does not use i18n
589 [22478] libc: sigwait can fail with EINTR
590 [22505] libc: ldconfig processes include directive in locale-specific
592 [22515] localedata: hsb_DE LC_COLLATE does not use copy "iso14651_t1"
593 [22517] localedata: et_EE LC_COLLATE does not use copy "iso14651_t1"
594 [22519] localedata: is_IS LC_COLLATE does not use copy "iso14651_t1"
595 [22524] localedata: lt_LT LC_COLLATE does not use copy "iso14651_t1"
596 [22527] localedata: tr_TR LC_COLLATE does not use copy "iso14651_t1"
597 [22534] localedata: Collation rules for Serbian and Bosnian should be the
599 [22561] math: [DR#471] cacosh (0 + iNaN) should return NaN +/- i pi/2
600 [22568] math: [DR#471] ctanh (0 + iNaN), ctanh (0 + i Inf)
601 [22577] libc: missing newline after "cannot allocate TLS data structures
603 [22588] manual: manual/conf.texi: missing underscore in front of
605 [22593] math: nextafter and nexttoward are declared with const attribute
606 [22596] manual: manual: finite(nan) wrongly described as returning nonzero
607 [22603] string: ia64 memchr overflows internal pointer check
608 [22605] libc: SH clone does not set the exit code correctly
609 [22606] dynamic-link: Incorrect array size computation in _dl_init_paths
611 [22607] dynamic-link: Buffer Overflow in _dl_init_paths (CVE-2017-1000409)
612 [22611] malloc: malloc/tst-realloc wrongly assumes that errno must not be
613 modified in case of success
614 [22614] build: gcc: error: unrecognized command line option ‘-no-pie’
615 [22615] manual: manual: ambiguous wording about errno value in case of
617 [22624] libc: MIPS setjmp() saves incorrect 'o0' register in --enable-
619 [22625] dynamic-link: RPATH $ORIGIN replaced by PWD for AT_SECURE/SUID
620 binaries or if /proc is not mounted (CVE-2017-16997)
621 [22627] dynamic-link: $ORIGIN in $LD_LIBRARY_PATH is substituted twice
622 [22630] build: $(no-pie-ldflag) is no longer effective
623 [22631] math: [m68k] Bad const attributes in bits/mathinline.h
624 [22635] nptl: pthread_self returns NULL before libpthread is loaded
625 [22636] nptl: PTHREAD_STACK_MIN is too small on x86-64
626 [22637] nptl: guard size is subtracted from thread stack size instead of
628 [22648] libc: getrlimit/setrlimit with RLIM_INFINITY broken on alpha
629 [22657] localedata: hu_HU: Avoid double space in date
630 [22660] math: fmax, fmin sNaN handling on alpha
631 [22664] libc: New warning of GCC8
632 [22665] math: alpha: ceil and floor raise inexact exceptions
633 [22666] math: alpha: trunc raise inexact exceptions
634 [22667] libc: makecontext lacks stack alignment on i386
635 [22678] libc: prlimit fails for RLIM_INFINITY values on 32-bit machines
636 [22679] libc: getcwd(3) can succeed without returning an absolute path
638 [22685] libc: PowerPC: Static AT_SECURE binaries segfault with lock-
640 [22687] math: [powerpc-nofpu] complex long double functions spurious
642 [22688] math: [powerpc-nofpu] remainderl wrong sign of zero result
643 [22690] math: [ldbl-128ibm] lrintl, lroundl missing "invalid" exceptions
644 [22691] math: [powerpc-nofpu] fmaxmagl, fminmagl spurious "invalid"
646 [22693] math: [ldbl-128ibm] log1pl (-qNaN) spurious "invalid" exception
647 [22697] math: [powerpc] llround spurious "inexact" exceptions on 32-bit
649 [22701] nis: Incomplete removal of libnsl
650 [22702] math: [powerpc-nofpu] nearbyintl traps with trapping "inexact"
651 [22707] libc: Missing defines in elf.h for DF_1_STUB and DF_1_PIE.
652 [22715] dynamic-link: FAIL: elf/tst-audit10
653 [22719] libc: Backtrace tests fail on hppa
654 [22742] libc: [aarch64] mcontext_t __reserved field got renamed
655 [22743] nptl: __pthread_register_cancel corrupts stack after f81ddabffd
656 [22765] crypt: (struct crypt_data *data)->initialized is not set to zero
657 before the first call to crypt_r () in crypt/badsalttest.c
664 * A per-thread cache has been added to malloc. Access to the cache requires
665 no locks and therefore significantly accelerates the fast path to allocate
666 and free small amounts of memory. Refilling an empty cache requires locking
667 the underlying arena. Performance measurements show significant gains in a
668 wide variety of user workloads. Workloads were captured using a special
669 instrumented malloc and analyzed with a malloc simulator. Contributed by
670 DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
672 * Unicode 10.0.0 Support: Character encoding, character type info, and
673 transliteration tables are all updated to Unicode 10.0.0, using
674 generator scripts contributed by Mike FABIAN (Red Hat).
675 These updates cause user visible changes, especially the changes in
676 wcwidth for many emoji characters cause problems when emoji sequences
677 are rendered with pango, see for example:
678 https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
680 * Collation of Hungarian has been overhauled and is now consistent with "The
681 Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
684 * Improvements to the DNS stub resolver, contributed by Florian Weimer:
686 - The GNU C Library will now detect when /etc/resolv.conf has been
687 modified and reload the changed configuration. The new resolver option
688 “no-reload” (RES_NORELOAD) disables this behavior.
690 - The GNU C Library now supports an arbitrary number of search domains
691 (configured using the “search” directive in /etc/resolv.conf);
692 previously, there was a hard limit of six domains. For backward
693 compatibility, applications that directly modify the ‘_res’ global
694 object are still limited to six search domains.
696 - When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
697 Library will now randomly pick a name server from the configuration as a
698 starting point. (Previously, the second name server was always used.)
700 * The tunables feature is now enabled by default. This allows users to tweak
701 behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
703 * New function reallocarray, which resizes an allocated block (like realloc)
704 to the product of two sizes, with a guaranteed clean failure upon integer
705 overflow in the multiplication. Originally from OpenBSD, contributed by
706 Dennis Wölfing and Rüdiger Sonderfeld.
708 * New wrappers for the Linux-specific system calls preadv2 and pwritev2.
709 These are extended versions of preadv and pwritev, respectively, taking an
710 additional flags argument. The set of supported flags depends on the
711 running kernel; full support currently requires kernel 4.7 or later.
713 * posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
714 create a new session ID for the spawned process. This feature is
715 scheduled to be added to the next major revision of POSIX; for the time
716 being, it is available under _GNU_SOURCE.
718 * errno.h is now safe to use from C-preprocessed assembly language on all
719 supported operating systems. In this context, it will only define the
720 Exxxx constants, as preprocessor macros expanding to integer literals.
722 * On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
723 128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
724 754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
725 Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
727 To compile programs that use this feature, the compiler must support
728 128-bit floating point with the type name _Float128 (as defined by TS
729 18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
730 C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
731 must be defined to make the new interfaces visible.
733 The new functions and macros correspond to those present for other
734 floating-point types (except for a few obsolescent interfaces not
735 supported for the new type), with F128 or f128 suffixes; for example,
736 strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
737 printf or scanf formats for the new type; the strfromf128 and strtof128
738 interfaces should be used instead.
740 Deprecated and removed features, and other changes affecting compatibility:
742 * The synchronization that pthread_spin_unlock performs has been changed to
743 now be equivalent to a C11 atomic store with release memory order to the
744 spin lock's memory location. Previously, several (but not all)
745 architectures used stronger synchronization (e.g., containing what is
746 often called a full barrier). This change can improve performance, but
747 may affect odd fringe uses of spin locks that depend on the previous
748 behavior (e.g., using spin locks as atomic variables to try to implement
749 Dekker's mutual exclusion algorithm).
751 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
754 * Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
755 will only be built and installed when the GNU C Library is configured with
756 --enable-obsolete-rpc. This allows alternative RPC implementations, such
757 as TIRPC or rpcsvc-proto, to be used.
759 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
760 libnss_compat, are deprecated, and will not be built or installed by
763 The NIS(+) support library, libnsl, is also deprecated. By default, a
764 compatibility shared library will be built and installed, but not headers
765 or development libraries. Only a few NIS-related programs require this
766 library. (In particular, the GNU C Library has never required programs
767 that use 'gethostbyname' to be linked with libnsl.)
769 Replacement implementations based on TIRPC, which additionally support
770 IPv6, are available from <https://github.com/thkukuk/>. The configure
771 option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
772 name service modules, to be built and installed.
774 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
775 support is enabled, the configured recursive resolver must support EDNS.
776 (Responding to EDNS-enabled queries with responses which are not
777 EDNS-enabled is fine, but FORMERR responses are not.)
779 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
780 servers have not supported this opcode for a long time.
782 * The _res_opcodes variable has been removed from libresolv. It had been
783 exported by accident.
785 * <string.h> no longer includes inline versions of any string functions,
786 as this kind of optimization is better done by the compiler. The macros
787 __USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
789 * The nonstandard header <xlocale.h> has been removed. Most programs should
790 use <locale.h> instead. If you have a specific need for the definition of
791 locale_t with no other declarations, please contact
792 libc-alpha@sourceware.org and explain.
794 * The obsolete header <sys/ultrasound.h> has been removed.
796 * The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
798 * The obsolete function cfree has been removed. Applications should use
801 * The stack_t type no longer has the name struct sigaltstack. This changes
802 the C++ name mangling for interfaces involving this type.
804 * The ucontext_t type no longer has the name struct ucontext. This changes
805 the C++ name mangling for interfaces involving this type.
807 * On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
808 the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
809 longer has the name struct mcontext. On SPARC GNU/Linux, the struct
810 mc_fq, struct rwindow, struct fpq and struct fq types are no longer
811 defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
812 mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
813 fpregset_t type no longer has the name struct fpu. This changes the C++
814 name mangling for interfaces involving those types.
816 * On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
817 synced with the kernel:
819 - PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
820 are not supported on this architecture and have been removed.
822 - PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
823 PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
824 PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
826 Programs that assume the GET/SETREGS ptrace requests are universally
827 available will now fail to build, instead of malfunctioning at runtime.
829 Changes to build and runtime requirements:
831 * Linux kernel 3.2 or later is required at runtime, on all architectures
832 supported by that kernel. (This is a change from version 2.25 only for
835 * GNU Binutils 2.25 or later is now required to build the GNU C Library.
837 * On most architectures, GCC 4.9 or later is required to build the GNU C
838 Library. On powerpc64le, GCC 6.2 or later is required.
840 Older GCC versions and non-GNU compilers are still supported when
841 compiling programs that use the GNU C Library. (We do not know exactly
842 how old, and some GNU extensions to C may be _de facto_ required. If you
843 are interested in helping us make this statement less vague, please
844 contact libc-alpha@sourceware.org.)
846 Security related changes:
848 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
849 to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
851 * LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
852 mode to guard against local privilege escalation attacks (CVE-2017-1000366).
854 * Avoid printing a backtrace from the __stack_chk_fail function since it is
855 called on a corrupt stack and a backtrace is unreliable on a corrupt stack
858 * A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
859 fixed (CVE-2017-12133).
861 The following bugs are resolved with this release:
863 [984] network: Respond to changed resolv.conf in gethostbyname
864 [5010] network: sunrpc service cleanup causes unwanted port mapper traffic
865 [12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
867 [12189] libc: __stack_chk_fail should not attempt a backtrace
869 [14096] time: Race condition on timezone/tst-timezone.out
870 [14172] localedata: az_IR: new locale
871 [14995] build: glibc fails to build if gold is the default linker, even if
873 [15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
874 [16637] network: inet_pton function is accepting IPv6 with bad format
875 [16640] string: string/strtok.c: undefined behaviour inconsistent between
876 x86 and other generic code
877 [16875] localedata: ko_KR: fix lang_name
878 [17225] localedata: ar_SY: localized month names for May and June are
880 [17297] localedata: da_DK: wrong date_fmt string
881 [18907] stdio: Incorrect order of __wur __THROW in <printf.h>
882 [18934] localedata: hu_HU: collate: fix multiple bugs and add tests
883 [18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
884 [19066] localedata: ar_SA abbreviated day and month names are in English
885 [19569] network: resolv: Support an arbitrary number of search domains
886 [19570] network: Implement random DNS server selection in the stub
888 [19838] locale: localedef fails on PA-RISC
889 [19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
890 order of 0D36 and 0D37
891 [19922] localedata: iso14651_t1_common: Define collation for Malayalam
893 [20098] libc: FAIL: debug/backtrace-tst on hppa
894 [20257] network: sunrpc: clntudp_call does not enforce timeout when
896 [20275] localedata: locale day/abday/mon/abmon should not have trailing
898 [20313] localedata: Update locale data to Unicode 9.0
899 [20424] manual: Document how to provide a malloc replacement
900 [20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
902 [20686] locale: Add el_GR@euro to SUPPORTED.
903 [20831] dynamic-link: _dl_map_segments does not test for __mprotect
904 failures consistently
905 [21015] dynamic-link: Document and fix --enable-bind-now
906 [21016] nptl: pthread_cond support is broken on hppa
907 [21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
908 frame-pointer on i386
909 [21049] libc: segfault in longjmp_chk() due to clobbered processor
911 [21075] libc: unused assigment to %g4 in sparc/sparc{64,32}/clone.S
912 [21088] libc: Build fails with --enable-static-nss
913 [21094] math: cosf(1.57079697) has 3 ulp error on targets where the
914 generic c code is used
915 [21109] libc: Tunables broken on big-endian
916 [21112] math: powf has large ulp errors with base close to 1 and exponent
918 [21115] network: sunrpc: Use-after-free in error path in clntudp_call
920 [21120] malloc: glibc malloc is incompatible with GCC 7
921 [21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
923 [21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
924 (-0.0) when linking with -lieee
925 [21171] math: log10, log2 and lgamma return incorrect results
926 [21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
927 [21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
928 [21207] localedata: ce_RU: update weekdays from CLDR
929 [21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
930 [21217] localedata: Update months from CLDR-31
931 [21232] libc: miss posix_fadvise64 on MIPS64 when static linking
932 [21243] libc: support_delete_temp_file should issue warning for failed
934 [21244] libc: support resolv_test_start() socket fd close should be
936 [21253] libc: localedef randomly segfaults when using -fstack-check due to
937 new posix_spawn implementation
938 [21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
939 leads to lower CPU frequency
940 [21259] libc: [alpha] termios.h missing IXANY for POSIX
941 [21261] libc: [sparc64] bits/setjmp.h namespace
942 [21267] network: [mips] bits/socket.h IOC* namespace
943 [21268] libc: [alpha] termios.h NL2, NL3 namespace
944 [21270] libc: mmap64 silently truncates large offset values
945 [21275] libc: posix_spawn always crashes on ia64 now
946 [21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
947 [21280] math: [powerpc] logbl for POWER7 return incorrect results
948 [21289] libc: Incorrect declaration for 32-bit platforms with
949 _FILE_OFFSET_BITS=64 causes build error
950 [21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
951 not support gethostbyname4_r
952 [21298] nptl: rwlock can deadlock on frequent reader/writer phase
954 [21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
956 [21340] libc: Support POSIX_SPAWN_SETSID
957 [21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
958 [21359] network: ns_name_pack needs additional byte in destination buffer
959 [21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
960 against fragmentation attacks (CVE-2017-12132)
961 [21369] network: resolv: Remove EDNS fallback
962 [21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
964 [21386] nptl: Assertion in fork for distinct parent PID is incorrect
965 [21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
966 [21393] stdio: Missing dup3 error check in freopen, freopen64
967 [21396] libc: Use AVX2 memcpy/memset on Skylake server
968 [21399] localedata: Bad description for U00EC in
969 localedata/charmaps/CP1254
970 [21411] malloc: realloc documentation error
971 [21426] network: sys/socket.h uio.h namespace
972 [21428] libc: [aarch64] tst-backtrace5 testsuite failure
973 [21445] libc: signal.h bsd_signal namespace
974 [21455] network: Network headers stdint.h namespace
975 [21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
977 [21475] network: resolv: Overlong search path is truncated mid-label
978 [21511] libc: sigstack namespace
979 [21512] libc: clone() ends up calling exit_group() through _exit() wrapper
980 [21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
981 bits/syscall.h: No such file or directory
982 [21517] libc: struct sigaltstack namespace
983 [21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
984 [21533] localedata: Update locale data to Unicode 10.0
986 ../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
987 junk at end of line, first unrecognized character is `@'
988 [21538] libc: SIG_HOLD missing for XPG4
989 [21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
990 request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
991 [21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
992 [21543] libc: sigevent namespace
993 [21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
994 size for general purpose registers in mcontext_t structure
995 [21550] libc: sigwait namespace
996 [21552] libc: XPG4 bsd_signal namespace
997 [21554] libc: sigpause namespace
998 [21560] libc: sys/wait.h signal.h namespace
999 [21561] libc: waitid namespace
1000 [21573] nptl: GCC 7: /usr/bin/install: cannot remove
1001 '/usr/include/stdlib.h': Permission denied
1002 [21575] libc: sys/wait.h missing struct rusage definition
1003 [21584] libc: sigaltstack etc namespace
1004 [21597] libc: siginterrupt namespace
1005 [21607] math: hppa: FAIL: math/test-tgmath
1006 [21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
1008 [21622] libc: [tile] missing SA_* for POSIX.1:2008
1009 [21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
1010 stack and heap (CVE-2017-1000366)
1011 [21625] libc: wait3 namespace
1012 [21654] nss: Incorrect pointer alignment in NSS group merge result
1014 [21657] network: Parse interface zone id for node-local multicast
1015 [21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
1017 [21666] libc: .symver is used on common symbol
1018 [21668] network: resolv: res_init cross-thread broadcast introduces race
1020 [21687] math: tgmath.h totalorder, totalordermag return type
1021 [21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
1023 [21696] libc: Incorrect assumption of of __cpu_mask in
1024 posix/sched_cpucount.c
1025 [21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
1026 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
1028 [21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
1029 leading to relocation crash
1030 [21709] libc: resolv_conf.c:552: update_from_conf: Assertion
1031 `resolv_conf_matches (resp, conf)' failed.
1032 [21710] localedata: Added Samoan language locale for Samoa
1033 [21711] localedata: Pashto yesstr/nostr locale are missing
1034 [21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
1035 __have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
1036 [21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
1037 [21723] localedata: yesstr/nostr missing for Chinese language locale
1038 [21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
1040 [21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
1042 [21728] localedata: New Locale for Tongan language
1043 [21729] localedata: incorrect LC_NAME fields for hi_IN
1044 [21733] localedata: yesstr and nostr are missing for zh_HK
1045 [21734] localedata: Missing yesstr and nostr are for kw_GB
1046 [21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
1047 [21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
1048 [21742] libc: _dl_num_cache_relocations is undefined in libc.a
1049 [21743] localedata: ks_IN@devanagari: abday strings mismatch the day
1051 [21744] libc: Tests failing on --enable-tunables --enable-stack-
1053 [21749] localedata: Wrong abbreviated day name (“abday”) for
1055 [21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
1056 [21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
1057 [21759] localedata: missing yesstr and nostr for Tigrinya
1058 [21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
1059 [21766] localedata: Wrong LC_MESSAGES for om_ET Locale
1060 [21767] localedata: Missing Bislama locales
1061 [21768] localedata: Missing yesstr and nostr for aa_ET
1062 [21770] localedata: Missing Field in li_NL
1063 [21778] nptl: Robust mutex may deadlock
1064 [21779] libc: MicroBlaze segfaults when loading libpthread
1065 [21783] localedata: Fix int_select international_call_prefixes
1066 [21784] localedata: Inconsistency in country_isbn
1067 [21788] localedata: Missing Country Postal Abbreviations
1068 [21794] localedata: Added-country_isbn-for-Italy
1069 [21795] localedata: Add/Fix country_isbn for France
1070 [21796] localedata: Added country_isbn for Republic of Korea
1071 [21797] localedata: Fix inconsistency in country_isbn and missing prefixes
1072 [21799] localedata: Added int_select international_call_prefixes
1073 [21801] localedata: Added int_select international_call_prefixes
1074 [21804] nptl: Double semicolon in thread-shared-types.h
1075 [21807] localedata: LC_ADDRESS fix for pap_CW
1076 [21808] localedata: Fix LC_ADDRESS for pap_AW
1077 [21821] localedata: Added country_name in mai_IN
1078 [21822] localedata: Fix LC_TIME for mai_IN
1079 [21823] localedata: missing yesstr, nostr for sa_IN
1080 [21825] localedata: Fix name_mrs for mag_IN
1081 [21828] localedata: 2.26 changelog should mention user visible changes
1083 [21835] localedata: Added Maithili language locale for Nepal
1084 [21838] localedata: Removed redundant data for the_NP
1085 [21839] localedata: Fix LC_MONETARY for ta_LK
1086 [21844] localedata: Fix Latin characters and Months Sequence.
1087 [21848] localedata: Fix mai_NP Title Name
1092 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
1093 24731-2:2010, is supported to enable declarations of functions from that
1094 TR. Note that not all functions from that TR are supported by the GNU C
1097 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
1098 18661-1:2014, is supported to enable declarations of functions and macros
1099 from that TS. Note that not all features from that TS are supported by
1102 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
1103 18661-4:2015, is supported to enable declarations of functions and macros
1104 from that TS. Note that most features from that TS are not supported by
1107 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
1108 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
1109 Since the GNU C Library defaults to a much newer revision of POSIX, this
1110 will only affect programs that specifically request an old conformance
1111 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
1112 see a change in the visible declarations, but a program compiled with
1113 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
1116 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
1117 defined by all multithreaded code, but glibc has not required this for
1120 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
1121 means that in a future release, the macros “major”, “minor”, and “makedev”
1122 will only be available from <sys/sysmacros.h>.
1124 These macros are not part of POSIX nor XSI, and their names frequently
1125 collide with user code; see for instance glibc bug 19239 and Red Hat bug
1126 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
1127 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
1130 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
1131 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
1132 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
1134 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
1135 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
1136 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
1137 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
1138 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
1139 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
1140 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
1141 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
1142 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
1143 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
1144 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
1147 * New <math.h> features are added from TS 18661-1:2014:
1149 - Signaling NaN macros: SNANF, SNAN, SNANL.
1151 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
1152 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
1153 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
1155 - llogb functions: the llogb, llogbf and llogbl functions, and the
1156 FP_LLOGB0 and FP_LLOGBNAN macros.
1158 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
1161 - Comparison macros: iseqsig.
1163 - Classification macros: iscanonical, issubnormal, iszero.
1165 - Total order functions: totalorder, totalorderf, totalorderl,
1166 totalordermag, totalordermagf, totalordermagl.
1168 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
1170 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
1171 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
1173 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
1174 are added to libc. They convert a floating-point number into string.
1176 * Most of glibc can now be built with the stack smashing protector enabled.
1177 It is recommended to build glibc with --enable-stack-protector=strong.
1178 Implemented by Nick Alcock (Oracle).
1180 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
1181 intended to be used instead of memset() to erase sensitive data after use;
1182 the compiler will not optimize out calls to explicit_bzero even if they
1183 are "unnecessary" (in the sense that no _correct_ program can observe the
1184 effects of the memory clear).
1186 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
1187 to float instead of double. This does not affect the ABI of any libraries
1188 that are part of the GNU C Library, but may affect the ABI of other
1189 libraries that use this type in their interfaces.
1191 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
1192 float_t and double_t types are now defined to long double instead of float
1193 and double. These options are not the default, and this does not affect
1194 the ABI of any libraries that are part of the GNU C Library, but it may
1195 affect the ABI of other libraries that use this type in their interfaces,
1196 if they are compiled or used with those options.
1198 * The getentropy and getrandom functions, and the <sys/random.h> header file
1201 * The buffer size for byte-oriented stdio streams is now limited to 8192
1202 bytes by default. Previously, on Linux, the default buffer size on most
1203 file systems was 4096 bytes (and thus remains unchanged), except on
1204 network file systems, where the buffer size was unpredictable and could be
1205 as large as several megabytes.
1207 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
1208 for the Linux quota interface which predates kernel version 2.4.22 has
1211 * The malloc_get_state and malloc_set_state functions have been removed.
1212 Already-existing binaries that dynamically link to these functions will
1213 get a hidden implementation in which malloc_get_state is a stub. As far
1214 as we know, these functions are used only by GNU Emacs and this change
1215 will not adversely affect already-built Emacs executables. Any undumped
1216 Emacs executables, which normally exist only during an Emacs build, should
1217 be rebuilt by re-running “./configure; make” in the Emacs build tree.
1219 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
1220 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
1221 “no-ip6-dotint” had already been the default, and support for the
1222 “ip6-dotint” option was removed from the Internet in 2006.
1224 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
1225 flag from <resolv.h> have been removed. The option relied on a
1226 backwards-incompatible DNS extension which was never deployed on the
1229 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
1230 RES_BLAST defined in the <resolv.h> header file have been deprecated.
1231 They were already unimplemented.
1233 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
1234 _res.flags are deprecated. The flag was standardized in RFC 2133, but
1235 removed again from the IETF name lookup interface specification in RFC
1236 2553. Applications should use getaddrinfo instead.
1238 * DNSSEC-related declarations and definitions have been removed from the
1239 <arpa/nameser.h> header file, and libresolv will no longer attempt to
1240 decode the data part of DNSSEC record types. Previous versions of glibc
1241 only implemented minimal support for the previous version of DNSSEC, which
1242 is incompatible with the currently deployed version.
1244 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
1245 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
1246 <arpa/nameser.h> header file because the distinction between RR types and
1247 meta-RR types is not officially standardized, subject to revision, and
1248 thus not suitable for encoding in a macro.
1250 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
1251 and rhook members of the res_state type in <resolv.h> have been removed.
1252 The glibc stub resolver did not support these hooks, but the header file
1253 did not reflect that.
1255 * For multi-arch support it is recommended to use a GCC which has
1256 been built with support for GNU indirect functions. This ensures
1257 that correct debugging information is generated for functions
1258 selected by IFUNC resolvers. This support can either be enabled by
1259 configuring GCC with '--enable-gnu-indirect-function', or by
1260 enabling it by default by setting 'default_gnu_indirect_function'
1261 variable for a particular architecture in the GCC source file
1264 * GDB pretty printers have been added for mutex and condition variable
1265 structures in POSIX Threads. When installed and loaded in gdb these pretty
1266 printers show various pthread variables in human-readable form when read
1267 using the 'print' or 'display' commands in gdb.
1269 * Tunables feature added to allow tweaking of the runtime for an application
1270 program. This feature can be enabled with the '--enable-tunables' configure
1271 flag. The GNU C Library manual has details on usage and README.tunables has
1272 instructions on adding new tunables to the library.
1274 * A new version of condition variables functions have been implemented in
1275 the NPTL implementation of POSIX Threads to provide stronger ordering
1278 * A new version of pthread_rwlock functions have been implemented to use a more
1279 scalable algorithm primarily through not using a critical section anymore to
1282 Security related changes:
1284 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
1285 have been created with makecontext could fail to terminate due to a
1286 missing .cantunwind annotation. This has been observed to lead to a hang
1287 (denial of service) in some Go applications compiled with gccgo. Reported
1288 by Andreas Schwab. (CVE-2016-6323)
1290 * The DNS stub resolver functions would crash due to a NULL pointer
1291 dereference when processing a query with a valid DNS question type which
1292 was used internally in the implementation. The stub resolver now uses a
1293 question type which is outside the range of valid question type values.
1296 The following bugs are resolved with this release:
1298 [4099] stdio: Overly agressive caching by stream i/o functions.
1299 [7065] build: Support building glibc with -fstack-protector or -fstack-
1301 [9842] localedata: en_CA: incorrect date format
1302 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
1303 before it started waiting
1304 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
1305 [15765] nptl: sem_open is wrongly a cancellation point
1306 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
1307 [16458] libc: endian.h and netinet/in.h byte order macros return values of
1309 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
1310 library linked with pthread
1311 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
1312 "FIXME: Ingo" issue)
1313 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
1314 [17252] libc: getrandom and getentropy syscall
1315 [17730] malloc: thread-local storage is sometimes improperly free()'d
1316 after being __libc_memalign()'d
1317 [18241] stdio: failed fseek on memstream does not set errno and can fail
1319 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
1321 [18463] nptl: pthread_cond_broadcast issue when surrounded by
1322 PTHREAD_PRIO_INHERIT mutex on ARM
1323 [18784] network: res_query and related function crash for special record
1324 type queries (CVE-2015-5180)
1325 [19380] math: strtod does not raise "inexact"
1326 [19387] string: Integer overflow in memchr
1327 [19390] string: Integer overflow in strncat
1328 [19398] build: linknamespace tests fail with massively parallel build
1329 [19402] nptl: Deadlock with robust shared mutex and asynchronous
1331 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
1332 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
1333 [19514] libc: [PATCH] Fix spelling errors in spelling
1334 "implement"/"implementation" in several places
1335 [19582] network: Deprecate RES_USE_INET6
1336 [19673] manual: clog10 docs appear to be erroneous
1337 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
1338 causes a segmentation fault
1339 [19826] libc: invalid pointer returned from __tls_get_addr with static
1341 [20016] network: resolv: Remove hooks support from the API
1342 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
1344 [20033] math: [x86_64] vectorized math function don't call the __finite
1346 [20116] nptl: use after free in pthread_create
1347 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
1348 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
1350 [20311] nptl: please install proc_service.h
1351 [20366] libc: Compilation errors in installed headers in strict-compliance
1353 [20370] malloc: malloc: Arena free list management is still racy
1354 (incorrect fix in bug 19243)
1355 [20386] libc: assert (X = 0) does not result in GCC warning
1356 [20432] malloc: malloc: Minimize interface required for interposition
1357 [20435] libc: Missing unwind info in __startcontext causes infinite loop
1358 in _Unwind_Backtrace (CVE-2016-6323)
1359 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
1360 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
1362 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
1363 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
1364 [20477] network: resolv: incorrect double-checked locking related to
1366 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
1368 [20495] math: x86_64 performance degradation due to AVX/SSE transition
1370 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
1371 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
1372 cause transition penalty
1373 [20517] math: sparcv9 missing fdiml compat symbol
1374 [20524] manual: strverscmp is inconsistent
1375 [20525] libc: <sys/quota.h> should be based on kernel headers
1376 [20539] math: GCC 7 -static -lm fails to link at -O3
1377 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
1379 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
1381 [20591] network: Remove obsolete DNSSEC support
1382 [20592] network: DNS resource record type classification macros in
1383 <arpa/nameser.h> are incorrect
1384 [20593] network: Update DNS RR type definitions
1385 [20611] network: getaddrinfo accepts invalid numeric scope IDs
1386 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
1388 [20629] network: libresolv: Remove support for bitstring labels
1390 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
1391 assertion: "maxidx >= 2"
1392 [20660] math: [arm] Use VSQRT
1393 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
1394 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
1395 [20689] libc: Test for FMA should also check for AVX.
1396 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
1397 [20715] math: iszero macro breaks existing code
1398 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
1399 [20728] libc: powerpc: Missing TOC stub in clone
1400 [20729] build: glibc-2.24 fails to build for i486 with -Os
1401 [20750] build: Build fails with default PIE enabled gcc-6.x
1402 [20768] math: [alpha] sqrt fegetenv namespace
1403 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
1405 [20787] math: float_t is defined as float incorrectly on x86_64 even if
1406 __FLT_EVAL_METHOD__ is 2
1407 [20790] network: rpcgen buffer overrun in get_prog_declaration
1408 [20822] nptl: race condition in __lll_unlock_elision on powerpc
1409 [20829] libc: crypt snprintf namespace
1410 [20847] libc: tst-vfork3 failure
1411 [20855] math: Default bits/mathdef.h has inappropriate float_t
1412 [20859] math: [sh4] FP_ILOGB0 invalid
1413 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
1414 U+20AC), not same as GBK
1415 [20915] dynamic-link: global-dynamic TLS broken on aarch64
1416 [20916] math: pow handling of sNaN arguments
1417 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
1418 [20919] math: Bad pow (qNaN, 0) result with -lieee
1419 [20940] math: hypot sNaN handling
1420 [20947] math: fmax, fmin sNaN handling
1421 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
1422 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
1424 [20971] string: powerpc64/power7 memchr overflows internal pointer check
1425 [20973] nptl: robust mutexes: Lost wake-ups
1426 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
1427 [20978] nis: strlen on null pointer in nss_nisplus
1428 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
1430 [21014] string: i686 memchr overflows internal pointer check
1431 [21019] libc: [mips] n32 lseek incorrect on overflow
1432 [21022] libc: [microblaze] __backtrace get_frame_size namespace
1433 [21026] libc: [MIPS] readahead syscall is broken on n64
1434 [21028] math: Fallback fesetexceptflag should always succeed
1435 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
1436 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
1438 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
1439 [21061] librt: [microblaze] librt lost clock_* exports
1440 [21073] libc: tunables: insecure environment variables passed to
1441 subprocesses with AT_SECURE
1442 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
1446 * The minimum Linux kernel version that this version of the GNU C Library
1447 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
1448 kernel version 2.6.32 or later suffices (on architectures that already
1449 required kernel versions more recent than 3.2, those requirements remain
1450 unchanged). Linux 3.2 or later kernel headers are required on all
1453 * The pap_AN locale has been deleted. This has been deprecated for a long
1454 time. It has been replaced by pap_AW & pap_CW, both of which have long
1455 been included in previous releases.
1457 * The readdir_r and readdir64_r functions have been deprecated. It is
1458 recommended to use readdir and readdir64 instead.
1460 * The type “union wait” has been removed. It was deprecated in the early
1461 1990s and never part of POSIX. Application code should use the int type
1462 instead of “union wait”.
1464 * A new NSS action is added to facilitate large distributed system
1465 administration. The action, MERGE, allows remote user stores like LDAP
1466 to be merged into local user stores like /etc/groups in order to provide
1467 easy to use, updated, and managed sets of merged credentials. The new
1468 action can be used by configuring it in /etc/nsswitch.conf:
1469 group: files [SUCCESS=merge] nis
1470 Implemented by Stephen Gallagher (Red Hat).
1472 * The deprecated __malloc_initialize_hook variable has been removed from the
1475 * The long unused localedef --old-style option has been removed. It hasn't
1476 done anything in over 16 years. Scripts using this option can safely
1479 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
1480 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
1481 return the next representable value in the direction of positive infinity
1482 and the nextdown functions return the next representable value in the
1483 direction of negative infinity. These are currently enabled as GNU
1486 Security related changes:
1488 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
1489 could result in a stack overflow when getnetbyname was called with an
1490 overly long name. (CVE-2016-3075)
1492 * Previously, getaddrinfo copied large amounts of address data to the stack,
1493 even after the fix for CVE-2013-4458 has been applied, potentially
1494 resulting in a stack overflow. getaddrinfo now uses a heap allocation
1495 instead. Reported by Michael Petlan. (CVE-2016-3706)
1497 * The glob function suffered from a stack-based buffer overflow when it was
1498 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
1499 Reported by Alexander Cherepanov. (CVE-2016-1234)
1501 * The Sun RPC UDP client could exhaust all available stack space when
1502 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
1503 alloca plugin for GCC. (CVE-2016-4429)
1505 * The IPv6 name server management code in libresolv could result in a memory
1506 leak for each thread which is created, performs a failing naming lookup,
1507 and exits. Over time, this could result in a denial of service due to
1508 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
1510 The following bugs are resolved with this release:
1512 [1170] localedata: ne_NP: update Nepali locale definition file
1513 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
1515 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
1516 [6796] math: fdim() does not set errno on overflow
1517 [10354] libc: posix_spawn should use vfork() in more cases than presently
1518 [11213] localedata: localedata: add copyright disclaimer to locale files
1519 [12143] localedata: chr_US: new Cherokee locale
1520 [12450] localedata: sgs_LT: new locale
1521 [12676] localedata: ln_CD: new locale
1522 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
1524 [13304] math: fma, fmaf, fmal produce wrong results
1525 [14259] build: --localedir arg to configure is ignored
1526 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
1527 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
1528 [14934] localedata: es_CL: wrong first weekday chilean locale
1529 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
1531 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
1533 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
1534 [15368] nptl: raise() is not async-signal-safe
1535 [15479] math: ceil, floor, round and trunc raise inexact exception
1536 [15578] localedata: kk_KZ: various updates
1537 [16003] localedata: pap_AN: punt old locale
1538 [16137] localedata: iw_IL: punt old locale
1539 [16190] localedata: eo: new esperanto locale
1540 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
1541 [16742] malloc: race condition: pthread_atfork() called before first
1542 malloc() results in unexpected locking behaviour/deadlocks
1543 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
1545 [16983] localedata: postal_fmt does not allow %l and %n modifiers
1546 [17565] localedata: pt_PT: wrong (work-)week start
1547 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
1548 [17950] build: Build fails with -msse
1549 [18205] localedata: be_BY*: wrong first_weekday and first_workday
1550 [18433] libc: posix_spawn does not return correctly upon failure to
1552 [18453] localedata: charmaps/IBM875: incorrect codes
1553 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
1555 [18896] localedata: he_IL: improvements for currency
1556 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
1557 Romanian locale data
1558 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
1560 [19056] libc: Deprecate readdir_r
1561 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
1563 [19198] localedata: nl_NL: small improvements for Dutch locales
1564 [19257] network: Per-thread memory leak in __res_vinit with IPv6
1565 nameservers (CVE-2016-5417)
1566 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
1568 [19400] locale: Language missing in "iso-639.def", trivial fix in
1570 [19431] malloc: Deadlock between fflush, getdelim, and fork
1571 [19505] libc: Incorrect file descriptor validity checks in
1572 posix_spawn_file_actions_add{open,close,dup2}
1573 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
1574 when using RTLD_NEXT
1575 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
1576 `intl/{gettextP,loadinfo}.h'
1577 [19534] libc: execle, execlp may use malloc
1578 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
1579 [19573] network: res_nclose and __res_maybe_init disagree about name
1580 server initialization, breaking Hesiod
1581 [19575] localedata: Status of GB18030 tables
1582 [19581] localedata: sr_* date_fmt string contains additional newline
1583 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
1585 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
1586 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
1587 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
1588 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
1590 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
1592 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
1594 [19610] dynamic-link: ldconfig -X removes stale symbolic links
1595 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
1596 [19633] locale: strfmon_l applies global locale to number formatting
1597 [19642] network: Memory leak in getnameinfo
1598 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
1599 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
1601 [19654] math: [x86_64] Need testcase for BZ #19590 fix
1602 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
1604 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
1605 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
1607 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
1609 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
1611 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
1612 pointers and lengths in error-case.
1613 [19727] locale: Converting from/to UTF-xx with iconv() does not always
1614 report errors on UTF-16 surrogates values.
1615 [19755] nscd: nscd assertion failure in gc
1616 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
1617 [19759] libc: mempcpy shouldn't be inlined
1618 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
1619 [19765] libc: s390 needs an optimized mempcpy
1620 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
1621 NAME_MAX limit assumption (CVE-2016-1234)
1622 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
1623 [19787] network: Missing and incorrect truncation checks in getnameinfo
1624 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
1626 [19791] network: Assertion failure in res_query.c with un-connectable name
1628 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
1629 [19822] math: libm.so install clobbers old version
1630 [19825] network: resolv: send_vc can return uninitialized data in second
1631 response to getaddrinfo
1632 [19830] network: nss_dns: should check RDATA length against buffer length
1633 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
1634 confronted with A/AAAA records of invalid size
1635 [19837] nss: nss_db: No retries for some long lines with a larger buffer
1636 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
1637 [19853] stdio: Printing IBM long double in decimal with high precision is
1639 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
1640 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
1641 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
1643 [19865] network: Assertion failure or memory leak in
1644 _nss_dns_getcanonname_r
1645 [19868] network: nss_dns: netent code does not skip over non-PTR records
1646 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
1648 [19881] string: Improve x86-64 memset
1649 [19907] string: Incorrect memcpy tests
1650 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
1652 [19925] libc: termios.h XCASE namespace
1653 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
1654 [19929] libc: limits.h NL_NMAX namespace
1655 [19931] stdio: Memory leak in vfprintf
1656 [19957] libc: clone(CLONE_VM) access invalid parent memory
1657 [19963] localedata: en_IL: New locale
1658 [19989] stdio: stdio.h cuserid namespace
1659 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
1661 [19996] locale: langinfo.h nl_langinfo_l namespace
1662 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
1663 [20010] network: getaddrinfo: Stack overflow in hostent translation
1665 [20012] stdio: libio: fmemopen append mode failure
1666 [20014] stdio: stdio.h namespace for pre-threads POSIX
1667 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
1668 [20023] libc: fcntl.h timespec namespace
1669 [20024] math: [x86_64] vectorized sincos trashes the stack
1670 [20031] network: nss_hesiod: Heap overflow in get_txt_records
1671 [20041] time: sys/time.h timespec namespace
1672 [20043] libc: unistd.h missing cuserid for UNIX98 and before
1673 [20044] libc: unistd.h missing pthread_atfork for UNIX98
1674 [20051] libc: ttyslot in wrong header under wrong conditions
1675 [20054] libc: gethostname not declared for XPG4
1676 [20055] libc: termios.h missing tcgetsid for XPG4
1677 [20072] dynamic-link: x86 init_cpu_features is called twice in static
1679 [20073] libc: sys/stat.h fchmod namespace
1680 [20074] libc: stdlib.h rand_r namespace
1681 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
1682 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
1684 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
1685 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
1687 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
1688 [20119] libc: Wrong mask for processors level type from CPUID
1689 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
1690 AS not supporting AVX512
1691 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
1693 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
1694 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
1696 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
1697 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
1698 [20178] libc: posix_spawn{p} should not call exit
1699 [20191] stdio: libio: vtables hardening
1700 [20195] string: FMA4 detection requires CPUID execution with register
1702 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
1703 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
1705 [20212] math: acos (sNaN) returns sNaN
1706 [20213] math: asin (sNaN) returns sNaN
1707 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
1708 [20218] math: [i386] asinhl (sNaN) returns sNaN
1709 [20219] math: [i386] atanhl (sNaN) returns sNaN
1710 [20222] stdio: fopencookie: Mangle function pointers
1711 [20224] math: [i386] cbrtl (sNaN) returns sNaN
1712 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
1713 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
1715 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
1716 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
1717 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
1718 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
1719 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
1720 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
1721 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
1722 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
1723 [20240] math: modf (sNaN) returns sNaN
1724 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
1725 [20250] math: frexp (sNaN) returns sNaN
1726 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
1727 [20255] math: [i386] fdim, fdimf return with excess range and precision /
1729 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
1730 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
1731 subscript is below array bounds [-Werror=array-bounds]
1732 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
1733 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
1735 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
1736 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
1738 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
1739 "invalid" exceptions
1740 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
1741 [20316] localedata: id_ID: Februari instead of Pebruari
1742 [20327] string: POWER8 strcasecmp returns incorrect result
1743 [20347] math: Failure: Test: j0_downward (0xap+0)
1744 [20348] libc: FAIL: misc/tst-preadvwritev64
1745 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
1746 [20350] libc: There is no test for p{read,write}64
1747 [20357] math: Incorrect cos result for 1.5174239687223976
1748 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
1752 * Unicode 8.0.0 Support: Character encoding, character type info, and
1753 transliteration tables are all updated to Unicode 8.0.0, using new
1754 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
1755 These updates cause user visible changes, such as the fixes for bugs
1756 89, 16061, and 18568.
1758 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
1759 kernel-internal CPU set size. This means that requests that change the
1760 CPU affinity which failed before (for example, an all-ones CPU mask) will
1761 now succeed. Applications that need to determine the effective CPU
1762 affinities need to call sched_getaffinity or pthread_getaffinity_np after
1763 setting it because the kernel can adjust it (and the previous size check
1764 would not detect this in the majority of cases).
1766 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
1767 the following new symbols are used: fts64_children, fts64_close,
1768 fts64_open, fts64_read and fts64_set.
1770 * getaddrinfo now detects certain invalid responses on an internal netlink
1771 socket. If such responses are received, an affected process will
1772 terminate with an error message of "Unexpected error <number> on netlink
1773 descriptor <number>" or "Unexpected netlink response of size <number> on
1774 descriptor <number>". The most likely cause for these errors is a
1775 multi-threaded application which erroneously closes and reuses the netlink
1776 file descriptor while it is used by getaddrinfo.
1778 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
1779 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
1780 unnecessary serialization of memory allocation requests across threads.
1781 The defect is now corrected. Users should see a substantial increase in
1782 the concurent throughput of allocation requests for applications which
1783 trigger this bug. Affected applications typically create and
1784 destroy threads frequently. (Bug 19048 was reported and analyzed by
1787 * There is now a --disable-timezone-tools configure option for disabling the
1788 building and installing of the timezone related utilities (zic, zdump, and
1789 tzselect). This is useful for people who build the timezone data and code
1790 independent of the GNU C Library.
1792 * The obsolete header <regexp.h> has been removed. Programs that require
1793 this header must be updated to use <regex.h> instead.
1795 * The obsolete functions bdflush, create_module, get_kernel_syms,
1796 query_module and uselib are no longer available to newly linked binaries;
1797 the header <sys/kdaemon.h> has been removed. These functions and header
1798 were specific to systems using the Linux kernel and could not usefully be
1799 used with the GNU C Library on systems with version 2.6 or later of the
1802 * Optimized string, wcsmbs and memory functions for IBM z13.
1803 Implemented by Stefan Liebler.
1805 * Newly linked programs that define a variable called signgam will no longer
1806 have it set by the lgamma, lgammaf and lgammal functions. Programs that
1807 require signgam to be set by those functions must ensure that they use the
1808 variable provided by the GNU C Library and declared in <math.h>, without
1809 defining their own copy.
1811 * The minimum GCC version that can be used to build this version of the GNU
1812 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
1813 still be used to compile programs using the GNU C Library.
1815 Security related changes:
1817 * An out-of-bounds value in a broken-out struct tm argument to strftime no
1818 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
1820 * The LD_POINTER_GUARD environment variable can no longer be used to disable
1821 the pointer guard feature. It is always enabled. Previously,
1822 LD_POINTER_GUARD could be used to disable security hardening in binaries
1823 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
1826 * An integer overflow in hcreate and hcreate_r could lead to an
1827 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
1829 * The catopen function no longer has unbounded stack usage. Reported by
1830 Max. (CVE-2015-8779)
1832 * The nan, nanf and nanl functions no longer have unbounded stack usage
1833 depending on the length of the string passed as an argument to the
1834 functions. Reported by Joseph Myers. (CVE-2014-9761)
1836 * A stack-based buffer overflow was found in libresolv when invoked from
1837 libnss_dns, allowing specially crafted DNS responses to seize control
1838 of execution flow in the DNS client. The buffer overflow occurs in
1839 the functions send_dg (send datagram) and send_vc (send TCP) for the
1840 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
1841 family. The use of AF_UNSPEC triggers the low-level resolver code to
1842 send out two parallel queries for A and AAAA. A mismanagement of the
1843 buffers used for those queries could result in the response of a query
1844 writing beyond the alloca allocated buffer created by
1845 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
1846 the overflow. Thanks to the Google Security Team and Red Hat for
1847 reporting the security impact of this issue, and Robert Holiday of
1848 Ciena for reporting the related bug 18665. (CVE-2015-7547)
1850 The following bugs are resolved with this release:
1852 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
1853 [887] math: Math library function "logb" and "nextafter" inconsistent
1854 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
1855 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
1856 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
1857 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
1859 [4404] localedata: German translation of "Alarm clock" is misleading
1860 [6799] math: nextafter() and nexttoward() doen't set errno on
1861 overflow/underflow errors
1862 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
1864 [10432] nis: _nss_nis_setnetgrent assertion failure
1865 [11460] libc: fts has no LFS support
1866 [12926] network: getaddrinfo()/make_request() may spin forever
1867 [13065] nptl: Race condition in pthread barriers
1868 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
1869 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
1871 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
1872 [14912] libc: Rename non-installed bits/*.h headers
1873 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
1874 [15367] math: Let gcc use __builtin_isinf
1875 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
1876 [15421] math: lgamma wrongly sets signgam for ISO C
1877 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
1878 FE_INVALID with argument out of range
1879 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
1881 [15786] dynamic-link: ifunc resolver functions can smash function
1883 [15918] math: Unnecessary check for equality in hypotf()
1884 [16061] localedata: Review / update transliteration data
1885 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
1887 [16141] time: strptime %z offset restriction
1888 [16171] math: drem should be alias of remainder
1889 [16296] math: fegetround is pure?
1890 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
1891 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
1893 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
1894 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
1896 [16422] math: [powerpc] math-float, math-double failing llrint tests with
1897 "Exception "Inexact" set" on ppc32
1898 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
1899 [16517] math: Missing underflow exception from tanf/tan/tanl
1900 [16519] math: Missing underflow exception from sinhf
1901 [16520] math: Missing underflow exception from tanhf
1902 [16521] math: Missing underflow exception from exp2
1903 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
1905 [16734] stdio: fopen calls mmap to allocate its buffer
1906 [16961] math: nan function incorrect handling of bad sequences
1907 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
1908 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
1909 [16985] locale: localedef: confusing error message when opening output
1911 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
1912 [17197] locale: Redundant shift character in iconv conversion output at
1914 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
1915 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
1916 [17250] dynamic-link: static linking breaks nss loading
1917 (getaddrinfo/getpwnam/etc...)
1918 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
1920 [17441] math: isnan() should use __builtin_isnan() in GCC
1921 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
1922 (related to lock elision)
1923 [17787] manual: Exponent on page 324 of the PDF ends prematurely
1924 [17886] time: strptime should be able to parse "Z" as a timezone with %z
1925 [17887] time: strptime should be able to parse "+01:00" style timezones
1926 [17905] libc: catopen() Multiple unbounded stack allocations
1928 [18084] libc: backtrace (..., 0) dumps core on x86
1929 [18086] libc: nice() sets errno to 0 on success
1930 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
1931 is too large (CVE-2015-8778)
1932 [18251] dynamic-link: SONAME missing when audit modules provides path
1933 [18265] libc: add attributes for wchar string and memory functions
1934 [18370] math: csqrt missing underflows
1935 [18421] libc: [hppa] read-only segment has dynamic relocations
1936 [18472] libc: Obsolete syscall wrappers should be compat symbols
1937 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
1938 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
1939 [18525] localedata: Remove locale timezone information
1940 [18560] libc: [powerpc] spurious bits/ipc.h definitions
1941 [18568] localedata: Update locale data to Unicode 8.0
1942 [18589] locale: sort-test.sh fails at random
1943 [18595] math: ctan, ctanh missing underflows
1944 [18604] libc: assert macro-expands its argument
1945 [18610] math: S390: fetestexcept() reports any exception if DXC-code
1946 contains a vector instruction exception.
1947 [18611] math: j1, jn missing errno setting on underflow
1948 [18618] localedata: sync Chechen locale definitions with other *_RU
1950 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
1951 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
1952 [18665] network: In send_dg, the recvfrom function is NOT always using the
1953 buffer size of a newly created buffer (CVE-2015-7547)
1954 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
1956 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
1958 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
1959 [18699] math: tilegx cproj() for various complex infinities does not yield
1961 [18724] libc: Harden put*ent functions against data injection
1962 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
1963 [18755] build: build errors with -DNDEBUG
1964 [18757] stdio: fmemopen fails to set errno on failure
1965 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
1967 [18781] libc: openat64 lacks O_LARGEFILE
1968 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
1969 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
1970 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
1971 [18790] math: [ldbl-128ibm] tanhl inaccurate
1972 [18795] libc: stpncpy fortification misses buffer lengths that are
1973 statically too large
1974 [18796] build: build fails for --disable-mathvec
1975 [18803] math: hypot missing underflows
1976 [18820] stdio: fmemopen may leak memory on failure
1977 [18823] math: csqrt spurious underflows
1978 [18824] math: fma spurious underflows
1979 [18825] math: pow missing underflows
1980 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
1981 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
1982 [18870] build: sem_open.c fails to compile with missing symbol
1984 [18872] stdio: Fix memory leak in printf_positional
1985 [18873] libc: posix_fallocate overflow check ineffective
1986 [18875] math: Excess precision leads incorrect libm
1987 [18877] libc: arm: mmap offset regression
1988 [18887] libc: memory corruption when using getmntent on blank lines
1989 [18918] localedata: hu_HU: change time to HH:MM:SS format
1990 [18921] libc: Regression: extraneous stat() and fstat() performed by
1992 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
1993 binaries (CVE-2015-8777)
1994 [18951] math: tgamma missing underflows
1995 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
1997 [18953] localedata: lt_LT: change currency symbol to the euro
1998 [18956] math: powf inaccuracy
1999 [18961] math: [i386] exp missing underflows
2000 [18966] math: [i386] exp10 missing underflows
2001 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
2002 [18969] build: multiple string test failures due to missing locale
2004 [18970] libc: Reference of pthread_setcancelstate in libc.a
2005 [18977] math: float / long double Bessel functions not in XSI POSIX
2006 [18980] math: i386 libm functions return with excess range and precision
2007 [18981] math: i386 scalb*, ldexp return with excess range and precision
2008 [18982] stdio: va_list and vprintf
2009 [18985] time: Passing out of range data to strftime() causes a segfault
2011 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
2012 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
2013 [19012] locale: iconv_open leaks memory on error path
2014 [19016] math: clog, clog10 inaccuracy
2015 [19018] nptl: Mangle function pointers in tls_dtor_list
2016 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
2017 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
2018 [19048] malloc: malloc: arena free list can become cyclic, increasing
2020 [19049] math: [powerpc] erfc incorrect zero sign
2021 [19050] math: [powerpc] log* incorrect zero sign
2022 [19058] math: [x86_64] Link fail with -fopenmp and -flto
2023 [19059] math: nexttoward overflow incorrect in non-default rounding modes
2024 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
2025 [19074] network: Data race in _res_hconf_reorder_addrs
2026 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
2027 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
2028 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
2030 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
2032 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
2033 [19086] manual: posix_fallocate64 documented argument order is wrong.
2034 [19088] math: lround, llround missing exceptions close to overflow
2036 [19094] math: lrint, llrint missing exceptions close to overflow threshold
2037 [19095] math: dbl-64 lrint incorrect for 64-bit long
2038 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
2039 [19124] dynamic-link: ld.so failed to build with older assmebler
2040 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
2041 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
2042 [19134] math: [powerpc32] lround, lroundf spurious exceptions
2043 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
2044 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
2045 pthread_setaffinity_np
2046 [19156] math: [ldbl-128] j0l spurious underflows
2047 [19164] nptl: tst-getcpu fails with many possible CPUs
2048 [19168] math: math/test-ildoubl and math/test-ldouble failure
2049 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
2050 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
2052 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
2053 (FE_NOMASK_ENV) do not clear SSE exceptions
2054 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
2055 _int_new_arena/reused_arena
2056 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
2057 [19201] math: dbl-64 remainder incorrect sign of zero result
2058 [19205] math: bits/math-finite.h conditions do not match math.h and
2060 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
2061 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
2062 for C99-based standards
2063 [19212] libc: features.h not -Wundef clean
2064 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
2066 [19214] libc: Family and model identification for AMD CPU's are incorrect.
2067 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
2068 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
2070 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
2071 "inexact" exceptions
2072 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
2074 [19242] libc: strtol incorrect in Turkish locales
2075 [19243] malloc: reused_arena can pick an arena on the free list, leading
2076 to an assertion failure and reference count corruption
2077 [19253] time: tzset() ineffective when temporary TZ did not include DST
2079 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
2080 [19270] math: [hppa] Shared libm missing __isnanl
2081 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
2082 MAP_HUGETLB and MAP_STACK defines
2083 [19313] nptl: Wrong __cpu_mask for x32
2084 [19347] libc: grantpt: try to force a specific gid even without pt_chown
2085 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
2086 [19350] math: [ldbl-128ibm] sinhl spurious overflows
2087 [19351] math: [ldbl-128ibm] logl inaccurate near 1
2088 [19363] time: x32: times() return value wrongly truncates/sign extends
2090 [19367] dynamic-link: Improve branch prediction on Silvermont
2091 [19369] network: Default domain name not reset by res_ninit when "search"
2092 / "domain" entry is removed from resolv.conf
2093 [19375] math: powerpc: incorrect results for POWER7 logb with negative
2095 [19385] localedata: bg_BG: time separator should be colon, not comma
2096 [19408] libc: linux personality syscall wrapper may erroneously return an
2097 error on 32-bit architectures
2098 [19415] libc: dladdr returns wrong names on hppa
2099 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
2100 IBM905, IBM907, and IBM909
2101 [19439] math: Unix98 isinf and isnan functions conflict with C++11
2102 [19443] build: build failures with -DDEBUG
2103 [19451] build: Make check fails on test-double-vlen2
2104 [19462] libc: Glibc failed to build with -Os
2105 [19465] math: Wrong code with -Os
2106 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
2108 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
2110 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
2111 [19486] math: S390: Math tests fail with "Exception Inexact set".
2112 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
2113 [19550] libc: [mips] mmap negative offset handling inconsistent with other
2115 [19590] math: Fail to build shared objects that use libmvec.so functions.
2119 * The following bugs are resolved with this release:
2121 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
2122 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
2123 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
2124 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
2125 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
2126 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
2127 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
2128 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
2129 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
2130 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
2131 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
2132 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
2133 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
2134 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
2135 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
2136 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
2137 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
2138 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
2139 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
2140 18657, 18676, 18694, 18696, 18887.
2142 * Cache information can be queried via sysconf() function on s390 e.g. with
2143 _SC_LEVEL1_ICACHE_SIZE as argument.
2145 * A buffer overflow in gethostbyname_r and related functions performing DNS
2146 requests has been fixed. If the NSS functions were called with a
2147 misaligned buffer, the buffer length change due to pointer alignment was
2148 not taken into account. This could result in application crashes or,
2149 potentially arbitrary code execution, using crafted, but syntactically
2150 valid DNS responses. (CVE-2015-1781)
2152 * The time zone file parser has been made more robust against crafted time
2153 zone files, avoiding heap buffer overflows related to the processing of
2154 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
2155 large time zone data files. Overly long time zone specifiers in the TZ
2156 variable no longer result in stack overflows and crashes.
2158 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
2159 for LD and GD on x86 and x86-64, has been implemented. You will need
2160 binutils-2.24 or later to enable this optimization.
2162 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
2163 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
2164 Hat). These updates cause user visible changes, such as the fix for bug
2167 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
2168 and getXXbyYY NSS calls for the same database, causing a denial-of-service
2169 condition in some applications.
2171 * Added vector math library named libmvec with the following vectorized x86_64
2172 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
2174 The library can be disabled with --disable-mathvec. Use of the functions is
2175 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
2176 Shared library libmvec.so is linked in as needed when using -lm (no need to
2177 specify -lmvec explicitly for not static builds).
2178 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
2180 * A new fmemopen implementation has been added with the goal of POSIX
2181 compliance. The new implementation fixes the following long-standing
2182 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
2183 old implementation is still present for use be by existing binaries.
2185 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
2186 releases. It has been fixed to match 2.19 and older, but binaries built
2187 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
2189 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
2190 Contributed by Roland McGrath (Google).
2192 * The header <regexp.h> is deprecated, and will be removed in a future
2193 release. Use of this header will trigger a deprecation warning.
2194 Application developers should update their code to use <regex.h> instead.
2196 This header was formerly part of SUS, but was deprecated in 1994 and
2197 removed from the standard in 2001. Also, the glibc implementation
2198 leaks memory. See BZ#18681 for more details.
2202 * The following bugs are resolved with this release:
2204 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
2205 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
2206 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
2207 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
2208 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
2209 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
2210 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
2211 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
2212 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
2213 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
2216 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
2217 too little memory for the to-be-scanned arguments and overflow the
2218 allocated buffer. The implementation now correctly computes the required
2219 buffer size when using malloc, and switches to malloc from alloca as
2222 * A new semaphore algorithm has been implemented in generic C code for all
2223 machines. Previous custom assembly implementations of semaphore were
2224 difficult to reason about or ensure that they were safe. The new version
2225 of semaphore supports machines with 64-bit or 32-bit atomic operations.
2226 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
2227 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
2229 * Port to Altera Nios II has been contributed by Mentor Graphics.
2231 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
2232 implementations for powerpc64/powerpc64le.
2233 Implemented by Adhemerval Zanella (IBM).
2235 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
2236 and powerpc64le. This may improve lock scaling of existing programs on
2237 HTM capable systems. The lock elision code is only enabled with
2238 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
2239 powerpc will issue a transaction abort on every syscall to avoid side
2240 effects being visible outside transactions.
2242 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
2243 AArch64. Contributed by ARM Ltd.
2245 * i386 memcpy functions optimized with SSE2 unaligned load/store.
2247 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
2248 under certain input conditions resulting in the execution of a shell for
2249 command substitution when the application did not request it. The
2250 implementation now checks WRDE_NOCMD immediately before executing the
2251 shell and returns the error WRDE_CMDSUB as expected.
2253 * CVE-2012-3406 printf-style functions could run into a stack overflow when
2254 processing format strings with a large number of format specifiers.
2256 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
2257 infinite loop if the DNS response contained a PTR record of an unexpected
2260 * The minimum GCC version that can be used to build this version of the GNU
2261 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
2262 still be used to compile programs using the GNU C Library.
2264 * The GNU C Library is now built with -Werror by default. This can be
2265 disabled by configuring with --disable-werror.
2267 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
2269 * The obsolete sigvec function has been removed. This was the original
2270 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
2271 programs have been using instead for about 25 years. Of course, ABI
2272 compatibility for old binaries using sigvec remains intact.
2274 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
2275 with newer versions of bison.
2277 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
2278 The original MIPS o32 hard-float ABI requires an FPU where double-precision
2279 registers overlay two consecutive single-precision registers. MIPS32R2
2280 introduced a new FPU mode (FR=1) where double-precision registers extend the
2281 corresponding single-precision registers which is incompatible with the
2282 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
2283 require the use of FR=1 making a transition necessary. New o32 ABI
2284 extensions enable users to migrate over time from the original o32 ABI
2285 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
2286 tracks the ABI of any loaded object and verifies that new objects are
2287 compatible. Mode transitions will also be requested as required and
2288 unsupportable objects will be rejected. The ABI checks include both soft and
2289 hard float ABIs for o32, n32 and n64.
2291 GCC 5 with GNU binutils 2.25 onwards:
2292 It is strongly recommended that all o32 system libraries are built using the
2293 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
2294 with the original and all new o32 ABI extensions. Configure a MIPS GCC
2295 compiler using --with-fp-32=xx to set this by default.
2299 * The following bugs are resolved with this release:
2301 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
2302 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
2303 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
2304 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
2305 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
2306 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
2307 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
2308 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
2309 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
2310 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
2311 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
2312 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
2313 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
2314 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
2315 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
2317 * Reverted change of ABI data structures for s390 and s390x:
2318 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
2319 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
2320 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
2321 are preserved pointing straight to the same implementation as the old ones.
2322 Given that, new callers will simply provide a too-big buffer to these
2323 functions. Any applications/libraries out there that embed jmp_buf or
2324 ucontext_t in an ABI-relevant data structure that have already been rebuilt
2325 against 2.19 headers will have to rebuilt again. This is necessary in any
2326 case to revert the breakage in their ABI caused by the glibc change.
2328 * Support for file description locks is added to systems running the
2329 Linux kernel. The standard file locking interfaces are extended to
2330 operate on file descriptions, not file descriptors, via the use of
2331 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
2332 are associated with an open file instead of a process.
2334 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
2336 * The minimum Linux kernel version that this version of the GNU C Library
2337 can be used with is 2.6.32.
2339 * Running the testsuite no longer terminates as soon as a test fails.
2340 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
2341 with PASS or FAIL lines for individual tests. A summary of the results is
2342 printed, including a list of failing lists, and "make check" exits with
2343 error status if there were any unexpected failures. "make check
2344 stop-on-test-failure=y" may be used to keep the old behavior.
2346 * The am33 port, which had not worked for several years, has been removed
2349 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
2350 supported; they now act the same as _DEFAULT_SOURCE (but generate a
2351 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
2352 conflicted with POSIX (support for which was removed in 2.19), the
2353 interfaces those macros enabled remain available when compiling with
2354 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
2355 test macros defined.
2357 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
2359 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
2360 This may improve lock scaling of existing programs on TX capable systems.
2361 The lock elision code is only built with --enable-lock-elision=yes and
2362 then requires a GCC version supporting the TX builtins. With lock elision
2363 default mutexes are elided via __builtin_tbegin, if the cpu supports
2364 transactions. By default lock elision is not enabled and the elision code
2367 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
2368 copy the path argument. This allowed programs to cause posix_spawn to
2369 deference a dangling pointer, or use an unexpected pathname argument if
2370 the string was modified after the posix_spawn_file_actions_addopen
2373 * All supported architectures now use the main glibc sysdeps directory
2374 instead of some being in a separate "ports" directory (which was
2375 distributed separately before glibc 2.17).
2377 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
2378 On configurations that support it (all Linux configurations), it's now
2379 used regardless of the --enable-add-ons switch to configure. It is no
2380 longer possible to build such configurations without pthreads support.
2382 * Locale names, including those obtained from environment variables (LANG
2383 and the LC_* variables), are more tightly checked for proper syntax.
2384 setlocale will now fail (with EINVAL) for locale names that are overly
2385 long, contain slashes without starting with a slash, or contain ".." path
2386 components. (CVE-2014-0475) Previously, some valid locale names were
2387 silently replaced with the "C" locale when running in AT_SECURE mode
2388 (e.g., in a SUID program). This is no longer necessary because of the
2391 * On x86-64, the dynamic linker's lazy-binding support is now compatible
2392 with application code using Intel MPX instructions. (With all previous
2393 versions, the MPX register state could be clobbered when making calls
2394 into or out of a shared library.) Note that while the new dynamic
2395 linker is compatible with all known x86 hardware whether or not it
2396 supports Intel MPX, some x86 instruction-set emulators might fail to
2397 handle the new instruction encodings. This is known to affect Valgrind
2398 versions up through 3.9 (but will be fixed in the forthcoming 3.10
2399 release), and might affect other tools that do instruction emulation.
2401 * Support for loadable gconv transliteration modules has been removed.
2402 The support for transliteration modules has been non-functional for
2403 over a decade, and the removal is prompted by security defects. The
2404 normal gconv conversion modules are still supported. Transliteration
2405 with //TRANSLIT is still possible, and the //IGNORE specifier
2406 continues to be supported. (CVE-2014-5119)
2408 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
2409 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
2410 resulting a denial-of-service security vulnerability in applications which
2411 use functions related to iconv. (CVE-2014-6040)
2415 * The following bugs are resolved with this release:
2417 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
2418 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
2419 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
2420 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
2421 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
2422 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
2423 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
2424 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
2425 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
2426 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
2427 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
2428 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
2429 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
2430 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
2431 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
2432 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
2433 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
2434 16431, 16453, 16474, 16506, 16510, 16529
2436 * Slovenian translations for glibc messages have been contributed by the
2437 Translation Project's Slovenian team of translators.
2439 * The public headers no longer use __unused nor __block. This change is to
2440 support compiling programs that are derived from BSD sources and use
2441 __unused internally, and to support compiling with Clang's -fblock
2442 extension which uses __block.
2444 * CVE-2012-4412 The strcoll implementation caches indices and rules for
2445 large collation sequences to optimize multiple passes. This cache
2446 computation may overflow for large collation sequences and may cause a
2447 stack or buffer overflow. This is now fixed to use a slower algorithm
2448 which does not use a cache if there is an integer overflow.
2450 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
2451 rules for large collation sequences to optimize multiple passes and falls
2452 back to alloca if malloc fails, resulting in a possible stack overflow.
2453 The implementation now falls back to an uncached collation sequence lookup
2456 * CVE-2013-4788 The pointer guard used for pointer mangling was not
2457 initialized for static applications resulting in the security feature
2458 being disabled. The pointer guard is now correctly initialized to a
2459 random value for static applications. Existing static applications need
2460 to be recompiled to take advantage of the fix (bug 15754).
2462 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
2463 to the d_name member of struct dirent, or omit the terminating NUL
2464 character. (Bugzilla #14699).
2466 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
2467 aligned_alloc functions could allocate too few bytes or corrupt the
2468 heap when passed very large allocation size values (Bugzilla #15855,
2471 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
2472 for AF_INET6 has been fixed (Bugzilla #16072).
2474 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
2475 pap_CW, quz_PE, the_NP.
2477 * Substantially revised locales: gd_GB, ht_HT
2479 * The LC_ADDRESS field was updated to support country_car for almost all
2482 * ISO 1427 definitions were updated.
2484 * ISO 3166 definitions were updated.
2486 * The localedef utility now supports --big-endian and --little-endian
2487 command-line options to generate locales for a different system from that
2488 for which the C library was built.
2490 * Binary locale files now only depend on the endianness of the system for
2491 which they are generated and not on other properties of that system. As a
2492 consequence, binary files generated with new localedef may be incompatible
2493 with old versions of the GNU C Library, and binary files generated with
2494 old localedef may be incompatible with this version of the GNU C Library,
2495 in the following circumstances:
2497 + Locale files may be incompatible on m68k systems.
2499 + Locale archive files (but not separate files for individual locales) may
2500 be incompatible on systems where plain "char" is signed.
2502 * The configure option --disable-versioning has been removed. Builds with
2503 --disable-versioning had not worked for several years.
2505 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
2506 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
2508 * SystemTap probes for malloc have been introduced.
2510 * SystemTap probes for slow multiple precision fallback paths of
2511 transcendental functions have been introduced.
2513 * Support for powerpc64le has been added.
2515 * The soft-float powerpc port now supports e500 processors.
2517 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
2519 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
2520 set of header declarations that are enabled by default, even when other
2521 feature test macros or compiler options such as -std=c99 would otherwise
2522 disable some of those declarations.
2524 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
2525 conflict with POSIX. The libbsd-compat library (which was a dummy library
2526 that did nothing) has also been removed.
2528 * Preliminary documentation about Multi-Thread, Async-Signal and
2529 Async-Cancel Safety has been added.
2531 * Change of ABI data structures for s390 and s390x:
2532 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
2533 allow for future hardware extensions. All library functions that accept or
2534 return these structures were versioned in order to provide backwards
2535 compatibility with existing code. However, not all cases can be handled
2536 with interface versioning. If an application embeds either structure into
2537 another structure and that structure is passed to another compilation unit
2538 which expects the newer larger-sized object then any access to the new
2539 fields will result in undefined behaviour. Similarly any access to fields
2540 that were moved by the enlarging of the structures will cause undefined
2541 behaviour. To fix the undefined behaviour all objects that are part of the
2542 final in-memory image must agree on the size of structures, and this may
2543 require recompilation.
2547 * The following bugs are resolved with this release:
2549 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
2550 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
2551 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
2552 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
2553 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
2554 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
2555 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
2556 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
2557 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
2558 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
2559 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
2560 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
2561 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
2564 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
2565 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
2566 Distributions can re-enable building and using pt_chown via the new configure
2567 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
2568 considerable security risks and should only be used if the distribution
2569 understands and accepts the risks.
2571 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
2574 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
2575 fixed (Bugzilla #15330).
2577 * Add support for calling C++11 thread_local object destructors on thread
2578 and program exit. This needs compiler support for offloading C++11
2579 destructor calls to glibc.
2581 * Improved worst case performance of libm functions with double inputs and
2584 * Support for priority inherited mutexes in pthread condition variables on
2585 non-x86 architectures.
2587 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
2589 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
2591 * Optimized string functions for ARM. Implemented by Will Newton and
2594 * Optimized libm functions for SPARC. Implemented by David S. Miller.
2596 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
2599 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
2600 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
2602 * Added a benchmark framework to track performance of functions in glibc.
2604 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
2605 It is based on draft TS 18661 and currently enabled as a GNU extension.
2607 * On Linux, the clock function now uses the clock_gettime system call
2608 for improved precision, rather than old times system call.
2610 * Added support for version-3 tz format files. This is needed when using
2611 the tz database release 2013e or later, and affects a few unusual cases --
2612 currently only TZ='America/Godthab' for time stamps after 2037.
2614 * Added new API functions pthread_getattr_default_np and
2615 pthread_setattr_default_np to get and set the default pthread
2616 attributes of a process.
2618 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
2619 This may improve lock scaling of existing programs on TSX capable systems.
2620 When the --enable-lock-elision=yes parameter is specified at configure
2621 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
2624 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
2625 availability). Implemented by Ryan S. Arnold.
2627 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
2631 * The following bugs are resolved with this release:
2633 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
2634 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
2635 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
2636 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
2637 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
2638 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
2639 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
2640 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
2641 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
2642 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
2643 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
2644 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
2645 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
2646 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
2647 14879, 14889, 14893, 14898, 14914.
2649 * Optimization of memcpy for MIPS.
2651 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
2652 EMFILE has been fixed (Bugzilla #14889).
2654 * The add-on ports collection is now distributed in the "ports" subdirectory
2655 of the main GNU C Library distribution, rather than separately.
2657 * Port to ARM AArch64 contributed by Linaro.
2659 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
2660 Optimized versions of memcpy, memset, and memcmp added for System z10 and
2662 Implemented by Andreas Krebbel.
2664 * The new function secure_getenv allows secure access to the environment,
2665 returning NULL if running in a SUID/SGID process. This function replaces
2666 the internal function __secure_getenv.
2668 * SystemTap static probes have been added into the dynamic linker.
2669 Implemented by Gary Benson.
2671 * Optimizations of string functions strstr, strcasestr and memmem.
2672 Implemented by Maxim Kuvyrkov.
2674 * The minimum Linux kernel version that this version of the GNU C Library
2675 can be used with is 2.6.16.
2677 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
2678 powerpc POWER7. Implemented by Will Schmidt.
2680 * New configure option --disable-nscd builds the C library such that it
2681 never attempts to contact the Name Service Caching Daemon (nscd).
2682 New configure option --disable-build-nscd avoids building nscd itself;
2683 this is the default if --disable-nscd is used.
2685 * Improved support for cross-compilation, including cross-testing and
2686 bootstrap builds without a previously built glibc.
2688 * Several testsuite tests are now able to test multiple IFUNC variants of an
2689 interface, rather than just testing the one that would be chooen by
2692 * New configure options --with-bugurl and --with-pkgversion, for
2693 distributors to use to embed their bug-reporting and package version
2694 information in --help and --version output.
2696 * The ttyname and ttyname_r functions on Linux now fall back to searching for
2697 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
2698 allows creation of chroots without the procfs mounted on /proc.
2700 * The `crypt' function now fails if passed salt bytes that violate the
2701 specification for those values. On Linux, the `crypt' function will
2702 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
2703 enabled, and fail on encrypted strings using the MD5 or DES algorithm
2704 when the mode is enabled.
2706 * The `clock_*' suite of functions (declared in <time.h>) is now available
2707 directly in the main C library. Previously it was necessary to link with
2708 -lrt to use these functions. This change has the effect that a
2709 single-threaded program that uses a function such as `clock_gettime' (and
2710 is not linked with -lrt) will no longer implicitly load the pthreads
2711 library at runtime and so will not suffer the overheads associated with
2712 multi-thread support in other code such as the C++ runtime library.
2714 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
2719 * The following bugs are resolved with this release:
2721 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
2722 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
2723 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
2724 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
2725 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
2726 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
2727 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
2728 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
2729 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
2730 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
2731 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
2732 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
2733 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
2734 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
2735 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
2736 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
2737 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
2738 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
2739 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
2740 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
2741 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
2742 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
2745 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
2746 configuring glibc with:
2747 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
2748 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
2749 Implemented by H.J. Lu.
2753 + define static_assert
2755 + do not declare gets
2757 + declare at_quick_exit and quick_exit also for ISO C11
2759 + aligned_alloc. NB: The code is deliberately allows the size parameter
2760 to not be a multiple of the alignment. This is a moronic requirement
2761 in the standard but it is only a requirement on the caller, not the
2764 + timespec_get added
2766 + uchar.h support added
2768 + CMPLX, CMPLXF, CMPLXL added
2770 Implemented by Ulrich Drepper.
2772 * Support for the IA-64 has been moved to ports.
2774 * Remove support for anything but ELF binary format
2776 * Checking versions of poll, ppoll added.
2777 Implemented by Ulrich Drepper.
2779 * More generic and 64-bit performance optimizations to math functions.
2780 Implemented by Ulrich Drepper.
2782 * New configure option --enable-obsolete-rpc makes the deprecated RPC
2783 headers and functions available at compile time as they were before
2784 version 2.14. This option will be removed at some time in the future
2785 after the TI-RPC library becomes fully sufficient for the needs of
2786 existing applications.
2788 * Compatibility code for Linux kernel versions before 2.4 has been removed.
2789 Note that glibc is not expected to work with any Linux kernel version
2792 * New header <sys/auxv.h> and function getauxval allowing easy access to
2793 the AT_* key-value pairs passed from the Linux kernel. The header also
2794 defines the HWCAP_* bits associated with the AT_HWCAP key.
2796 * New locales: mag_IN
2798 * New configure option --enable-systemtap builds SystemTap static probes
2799 into libc for setjmp and longjmp and into libpthread for various operations.
2800 So far the setjmp/longjmp probes and some of the libpthread probes are
2801 provided only for i*86 and x86_64.
2802 Implemented by Roland McGrath and Rayson Ho.
2804 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
2806 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
2809 * More optimized functions for SPARC. Implemented by David S. Miller.
2811 * Improved support for cross-compilation, especially bootstrap builds
2812 without a previously built glibc.
2814 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
2815 Chris Metcalf from Tilera.
2817 * Support for the old ARM ABI has been removed from ports. Only the EABI is
2818 now supported for ARM processors.
2820 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
2821 as the name of the dynamic linker, to distinguish it from the
2822 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
2824 * Support for CRIS has been removed from ports.
2826 * A new class of installed header has been documented for low-level
2827 platform-specific functionality. PowerPC added the first instance with a
2828 function to provide time base register access. Contributed by Tulio
2829 Magno Quites Machado Filho.
2831 * ix86 configurations now install header files that are consistent with
2832 what x86-64 configurations install. These same header files can be used
2833 for -m32, -m64, or -mx32 builds.
2834 Contributed by H.J. Lu.
2836 * Math library bug fixes. A thorough audit of all open math library bugs was
2837 conducted by Joseph Myers. Significant progress was made on many math
2838 library bugs resulting in more accurate exceptions and function results.
2839 Many thanks to all those that contributed including Andreas Jaeger for his
2840 patch review and work on the x87 trigonometric instruction issues.
2842 * Timezone data is no longer installed. Timezone-related binaries and scripts
2843 will continue to be installed. Users should obtain their timezone data from
2844 their distribution provider or from the tzdata package at
2845 <ftp://munnari.oz.au/pub/>.
2849 * The following bugs are resolved with this release:
2851 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
2852 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
2853 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
2854 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
2855 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
2856 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
2857 13484, 13506, 13515, 13523, 13524, 13538, 13540
2859 * New program pldd to list loaded object of a process
2860 Implemented by Ulrich Drepper.
2862 * Add nss_db support back to glibc. No more dependency on Berkeley db
2863 and support for initgroups lookups.
2864 Implemented by Ulrich Drepper.
2866 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
2867 Contributed by HJ Lu.
2869 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
2870 Contributed by HJ Lu.
2872 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
2873 on x86-32 and x86-64.
2874 Contributed by Liubov Dmitrieva.
2876 * Optimized strchr and strrchr for SSE on x86-32.
2877 Contributed by Liubov Dmitrieva.
2879 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
2880 for x86-64 and x86-32.
2881 Contributed by Liubov Dmitrieva.
2883 * New interfaces: scandirat, scandirat64
2884 Implemented by Ulrich Drepper.
2886 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
2887 Implemented by Ulrich Drepper.
2889 * nscd now also caches the netgroup database.
2890 Implemented by Ulrich Drepper.
2892 * Integrate libm with gcc's -ffinite-math-only option.
2893 Implemented by Ulrich Drepper.
2895 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
2896 to math functions. Implemented by Ulrich Drepper.
2898 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
2899 Implemented by Ulrich Drepper.
2901 * New Linux interfaces: process_vm_readv, process_vm_writev
2903 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
2904 Implemented by Ulrich Drepper.
2906 * Optimized nearbyint and strcasecmp for PPC.
2907 Implemented by Adhemerval Zanella.
2909 * New locales: bho_IN, unm_US, es_CU, ta_LK
2913 * The following bugs are resolved with this release:
2915 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
2916 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
2917 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
2918 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
2919 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
2920 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
2921 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
2922 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
2923 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
2924 12795, 12811, 12813, 12814, 12841
2926 * The RPC implementation in libc is obsoleted. Old programs keep working
2927 but new programs cannot be linked with the routines in libc anymore.
2928 Programs in need of RPC functionality must be linked against TI-RPC.
2929 The TI-RPC implementation is IPv6 enabled and there are other benefits.
2931 Visible changes of this change include (obviously) the inability to link
2932 programs using RPC functions without referencing the TI-RPC library and the
2933 removal of the RPC headers from the glibc headers.
2934 Implemented by Ulrich Drepper.
2936 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
2937 syncfs, setns, sendmmsg
2939 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
2940 yue_HK, lij_IT, mhr_RU
2942 * New encodings: CP770, CP771, CP772, CP773, CP774
2944 * New program sotruss to trace calls through PLTs
2945 Implemented by Ulrich Drepper.
2947 * The malloc hook implementation is marked deprecated and will be removed
2948 from the default implementation in the next version. The design never
2949 worked ever since the introduction of threads. Even programs which do
2950 not create threads themselves can use multiple threads created internally.
2954 * The following bugs are resolved with this release:
2956 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
2957 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
2958 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
2959 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
2962 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
2964 * POWER7 optimizations: memset, memcmp, strncmp
2966 * New optimized string functions for x86-64: strnlen (SSE2),
2967 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
2968 Implemented by Ulrich Drepper.
2972 * The following bugs are resolved with this release:
2974 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
2975 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
2976 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
2977 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
2978 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
2979 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
2980 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
2981 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
2983 * New interfaces: pthread_getname_np, pthread_setname_np
2985 * New Linux interface: recvmmsg
2987 * STT_GNU_IFUNC implemented for Sparc by David Miller.
2989 * The dynamic linker now recognizes supported ABI versions from the
2990 EI_ABIVERSION field in the ELF header.
2991 Implemented by Ulrich Drepper.
2993 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
2994 will not be used to fill in password fields in the passwd.byname replies.
2995 Instead it is used to synthesize the shadow.byname table, should it be
2996 missing. This is a useful mode in some installations involving Solaris.
2997 Implemented by Ulrich Drepper.
2999 * New locales: kok_IN, sq_MK, cv_RU
3003 * The following bugs are resolved with this release:
3005 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
3006 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
3007 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
3008 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
3009 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
3010 10789, 10817, 10823, 10840, 10847
3012 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
3014 Implemented by Ulrich Drepper.
3016 * Checking version of longjmp added that fails if an uninitialized stack
3017 frame would be created. Implemented by Ulrich Drepper.
3019 * STT_GNU_IFUNC is now supported in static executables.
3020 Implemented by H.J. Lu.
3022 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
3024 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
3025 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
3026 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
3027 Contributed by H.J. Lu.
3029 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
3030 Implemented by Ulrich Drepper.
3032 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
3034 Contributed by H.J. Lu.
3036 * Support for fma instruction in AVX on x86-64.
3037 Implemented by H.J. Lu and Ulrich Drepper.
3039 * AVX support in x86-64 auditing support in ld.so.
3040 Implemented by H.J. Lu.
3042 * STB_GNU_UNIQUE support added.
3043 Implemented by Ulrich Drepper.
3045 * Implement second fallback mode for optimized DNS lookup for even more
3046 broken environments. If two requests from the same port are not
3047 handled correctly close the socket and open a new one before sending
3048 the second request. The 'single-request-reopen' option in /etc/resolv.conf
3049 can be used to select this mode right away, instead of rediscovering the
3050 necessity is every process again.
3051 Implemented by Ulrich Drepper.
3053 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
3054 Implemented by Adam Tkac.
3056 * Optimized iconv conversions for S390x.
3057 Implemented by Andreas Krebbel.
3059 * Using condvars with PI mutexes is now more efficient due to kernel
3060 support for requeueing to PI futexes. NPTL support added for x86-64.
3061 Implemented by Ulrich Drepper.
3063 * New locales: ps_AF, my_MM
3067 * The following bugs are resolved with this release:
3069 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
3070 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
3071 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
3072 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
3073 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
3075 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
3076 Implemented by Ulrich Drepper.
3078 * New Linux interfaces: accept4, fallocate, fallocate64.
3079 Implemented by Ulrich Drepper.
3081 * Correct declarations of string function when used in C++ code. This
3082 could lead to compile errors for invalid C++ code.
3084 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
3087 * New POSIX 2008 interface: psiginfo
3088 Implemented by Ulrich Drepper.
3090 * New ISO C++1x interfaces: quick_exit, at_quick_exit
3091 Implemented by Ulrich Drepper.
3093 * Support for selecting between multiple function definitions at runtime
3094 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
3096 * The libcrypt library can now use the hash function implementations in
3097 NSS. Implemented by Ulrich Drepper.
3099 * The malloc implementation can be compiled to be less memory efficient
3100 but higher performing in multi-threaded programs.
3101 Implemented by Ulrich Drepper.
3103 * New locales: nan_TW@latin, ks_IN
3105 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
3106 Implemented by Ulrich Drepper.
3108 * Extended printf hook support. It is possible to use user-defined types
3109 and extend existing format specifiers.
3110 Implemented by Ulrich Drepper.
3112 * Handling for group shadow files has been added.
3113 Implemented by Ulrich Drepper.
3115 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
3116 servers (the case, e.g., for some people using the built-in DNS
3117 server in ADSL modems/routers). There is a once-per-process timeout
3118 in case of a broken server. To avoid it, users can run nscd or put
3119 'options single-request' in /etc/resolv.conf.
3120 Implemented by Ulrich Drepper.
3124 * The following bugs are resolved with this release:
3126 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
3127 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
3128 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
3129 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
3130 6968, 6974, 6980, 6995, 7008, 7009, 7029
3132 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
3133 up at the same time. Implemented by Ulrich Drepper.
3135 * TLS descriptors for LD and GD on x86 and x86-64.
3136 Implemented by Alexandre Oliva.
3138 * getaddrinfo now handles DCCP and UDPlite.
3139 Implemented by Ulrich Drepper.
3141 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
3142 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
3143 Implemented by Ulrich Drepper.
3145 * New implementation of memmem, strstr, and strcasestr which is O(n).
3146 Implemented by Eric Blake.
3148 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
3150 * Implement "e" option for popen to open file descriptor with the
3151 close-on-exec flag set. Implemented by Ulrich Drepper.
3153 * Implement "b" mode for fmemopen. In this mode writes writes don't
3154 implicitly add a NUL byte and seeks from the end of the buffer really
3155 use the buffer end, not the string length as the basis.
3156 Implemented by Ulrich Drepper.
3158 * Many functions, exported and internal, now atomically set the close-on-exec
3159 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
3161 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
3163 Implemented by Pravin Satpute.
3165 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
3169 * The following bugs are resolved with this release:
3171 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
3172 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
3173 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
3174 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
3175 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
3176 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
3177 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
3179 * New locales: bo_CN, bo_IN, shs_CA.
3181 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
3183 * Sorting rules for some Indian languages (Devanagari and Gujarati).
3184 Implemented by Pravin Satpute.
3186 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
3188 * nscd caches now all timeouts for DNS entries
3189 Implemented by Ulrich Drepper.
3191 * nscd is more efficient and wakes up less often.
3192 Implemented by Ulrich Drepper.
3194 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
3195 vdprintf, and obstack_vprintf.
3196 Implemented by Jakub Jelinek.
3198 * Faster memset for x86-64.
3199 Implemented by Harsha Jagasia and H.J. Lu.
3201 * Faster memcpy on x86.
3202 Implemented by Ulrich Drepper.
3204 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
3205 Implemented by Ulrich Drepper.
3207 * Faster sqrt and sqrtf implemention for some PPC variants.
3208 Implemented by Steven Munroe.
3212 * The following bugs are resolved with this release:
3214 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
3215 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
3216 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
3217 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
3218 5071, 5103, 5104, 5112, 5113, 5184, 5186
3220 * More checking functions: fread, fread_unlocked, open*, mq_open.
3221 Implemented by Jakub Jelinek and Ulrich Drepper.
3223 * Extend fortification to C++. Implemented by Jakub Jelinek.
3225 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
3226 by not recognizing 'a' as a modifier when those specs are requested.
3227 Implemented by Jakub Jelinek.
3229 * PPC optimizations to math and string functions.
3230 Implemented by Steven Munroe.
3232 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
3233 options to be passed. Implemented by Ulrich Drepper.
3235 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
3237 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
3238 Implemented by Ulrich Drepper.
3240 * Handle private futexes in the NPTL implementation.
3241 Implemented by Jakub Jelinek and Ulrich Drepper.
3243 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
3244 Implemented by Roland McGrath and Ulrich Drepper.
3246 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
3248 * SHA-256 and SHA-512 based password encryption.
3249 Implemented by Ulrich Drepper.
3251 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
3252 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
3255 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
3256 Implemented by Ulrich Drepper.
3260 * The following bugs are resolved with this release:
3262 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
3263 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
3264 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
3265 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
3266 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
3267 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
3268 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
3271 * New Linux interfaces: epoll_pwait, sched_getcpu.
3273 * New generic interfaces: strerror_l.
3275 * nscd can now cache the services database. Implemented by Ulrich Drepper.
3279 * The following bugs are resolved with this release:
3281 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
3282 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
3283 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
3284 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
3285 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
3286 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
3287 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
3288 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
3289 3225, 3251, 3252, 3253, 3273
3291 * For Linux, the sorting of addresses returned by getaddrinfo now also
3292 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
3293 Implemented by Ulrich Drepper.
3295 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
3296 Implemented by Ulrich Drepper.
3298 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
3300 * New iconv module for MIK. Contributed by Alexander Shopov.
3302 * For sites with broken group and/or passwd database, the auto-propagate
3303 option of nscd can prevent creating ID lookup entries from the results
3304 of a name lookup and vice versa. This usually is no problem but some
3305 site might have problems with the default behavior.
3306 Implemented by Ulrich Drepper.
3308 * Iterating over entire database in NIS can be slow. With the
3309 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
3310 to trade time for memory. The entire database will be read at once.
3311 Implemented by Ulrich Drepper.
3313 * The interfaces introduced in RFC 3542 have been implemented by
3316 * Support for the new ELF hash table format was added by Ulrich Drepper.
3318 * Support for priority inheritance mutexes added by Jakub Jelinek and
3321 * Support for priority protected mutexes added by Jakub Jelinek.
3323 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
3324 or_IN, csb_PL, fy_NL, sr_ME.
3328 * More overflow detection functions.
3330 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
3331 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
3333 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
3334 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
3335 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
3336 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
3337 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
3338 by Masahide Washizawa.
3340 * It is now possible to install audit libraries for the dynamic linker using
3341 LD_AUDIT. Implemented by Ulrich Drepper.
3343 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
3344 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
3345 For a libc and libpthread that works well on Linux 2.4 kernels, we
3346 recommend using the stable 2.3 branch.
3348 * The new function open_wmemstream acts like open_memstream,
3349 but uses a wchar_t wide character buffer.
3351 * The new function ppoll is an improved version of poll, similar to pselect.
3353 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
3354 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
3355 renameat, unlinkat, linkat, symlinkat, readlinkat.
3357 * New Linux kernel system calls: unshare,
3358 inotify_init, inotify_add_watch, inotify_rm_watch.
3360 * The euidaccess function is now also known by the alias eaccess,
3361 for compatibility with some other systems.
3363 * Timezone data updated to 2006b version.
3367 * The following bugs are resolved with this release:
3369 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
3370 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
3371 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
3372 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
3373 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
3374 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
3376 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3378 * As of this release, GCC 4 can be used to compile the C Library.
3380 * Timezone data updated to 2005m version.
3384 * The following bugs are resolved with this release:
3386 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
3387 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
3388 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
3389 777, 787, 821, 822, 823, 825
3391 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3395 * Support for RFC 3678. Real implementations exist only for Linux so far.
3396 Implemented by Ulrich Drepper.
3398 * nscd can now cache entries persistently. Expiring entries are reloaded.
3399 For speedups the cache can be shared in memory with client processes.
3400 Implemented by Ulrich Drepper.
3402 * nscd can now perform SELinux checks.
3403 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
3405 * getaddrinfo queries are now cached. Canonical name lookup is performed
3407 Implemented by Ulrich Drepper.
3409 * The nothrow function attribute is used when headers are used by gcc when
3410 compiling C code. This can avoid significant amounts of exception
3413 * The malloc functions perform more error checking and are stricter when
3414 it comes to reacting on errors. The default action is to terminate
3415 the process after showing an error message. Implemented by Ulrich Drepper.
3417 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
3418 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
3420 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
3421 namespaces using the new function dlmopen(). This feature is of course,
3422 like most other dynamic loading functionality, not available in statically
3423 linked applications. Implemented by Ulrich Drepper.
3425 * Low-overhead boundary checking variants of string and some stdio functions
3426 were added. These are to be used in conjunction with a gcc patch by
3427 Jakub Jelinek which adds calls to these functions if possible.
3428 Implemented by Jakub Jelinek and Ulrich Drepper.
3430 * Old code for several operating systems and machine architectures that
3431 have not been in working condition in a long time have been removed from
3432 the main source tree maintained by the GNU C Library's maintainers.
3433 These files are now reside in the separate `ports' source module
3434 that is usable as an add-on when building the library.
3438 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
3439 interrogate the dynamic linker, compatible with the Solaris interface.
3441 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
3442 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
3444 * getifaddrs now uses the netlink interface on Linux to get its information.
3445 Implemented by Thorsten Kukuk.
3447 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
3448 Implemented by Ulrich Drepper.
3450 * support for non-executable stacks on x86 has been added. Changes mostly
3453 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
3456 * getaddrinfo now performs destination address selection according to
3461 * Thread-safe interfaces for many functions that access locale data
3462 were added in version 2.3, but these features were omitted from NEWS.
3463 Many functions have variants with an `_l' suffix that take a `locale_t'
3464 object as a parameter rather than consulting the current locale.
3465 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
3466 create and maintain `locale_t' objects. Additionally, the new function
3467 `uselocale' sets "the current locale" (as used by functions not so
3468 parameterized) set for an individual thread. These features were added
3469 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
3471 * The functions getresuid, getresgid, setresuid, and setresgid, which
3472 have long been available on Linux, are now declared in <unistd.h>
3473 and are now also available on the Hurd.
3475 * ELF thread-local storage support (TLS) now works on x86-64.
3477 * The new dynamic string token $LIB is expanded in shared library names.
3478 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
3480 * Aldy Hernandez contributed complete software floating point support for
3481 PowerPC machines with no FPU.
3483 * fexecve is implemented on Linux.
3485 * The `btowc' function should work at least twice as fast due to
3486 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
3488 * With approriate thread add-ons cancelable functions are now implemented
3489 in libc.so as well. No need to call the function in libpthread. This
3490 change allowed to finally disable the incorrect and expensive handling
3491 of weak definition in ld.so.
3493 * Yet more PLT entries in libc.so have been removed. We finally arrived
3494 at the bare minimum. Startup times improved appropriately.
3496 * Support for the new Linux/x86 system call interface was added. The
3497 AT_SYSINFO auxiliary vector entry is recognized and handled.
3501 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
3504 * iconv (the program and the interface) now accepts empty names (excluding
3505 options like //TRANSLIT) to mean "use charset of current locale".
3507 * localedef can now transliterate characters in strings which are not in
3508 the provided charmap. The information from the input locale is used.
3510 * Prelinking support was added for ELF targets. This requires additional
3511 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
3513 * Read-only stdio streams now use mmap to speed up operation by eliminating
3514 copying and buffer underflows. To use add 'm' to the mode string of
3515 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
3517 * The malloc functions were completely rewritten by Wolfram Gloger based
3518 on Doug Lea's malloc-2.7.0.c.
3520 * Isamu Hasegawa contributed a completely new and POSIX-conformant
3521 implementation of regex.
3523 * Bruno Haible upgraded the iconv and locale implementation to support
3526 * Contents of the LC_* and LANG environment variables in the CEN style are
3527 not recognized anymore. It never was used. Change by Ulrich Drepper.
3529 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
3530 thread-local storage (TLS) ABI on some platforms.
3531 Changes by Ulrich Drepper. SH support by Kaz Kojima.
3533 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
3534 EUC-JISX0213, and TSCII.
3536 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
3537 BSD-compatible interface for getting all network interface addresses.
3538 Implementation for IPv4 by Roland McGrath.
3540 * Loading of locale data is faster due to the introduction of a locale
3541 archive. Implemented by Roland McGrath and Ulrich Drepper.
3543 * Startup times are significantly reduced by not using exported functions
3544 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
3547 * Steven Munroe contributed a port to PowerPC64/Linux.
3551 * The Hurd now uses the GNU libio implementation of stdio rather than the
3552 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
3554 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
3555 with the same behavior as the Linux system call of the same name.
3559 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
3560 128-bit long double format.
3562 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
3563 IBM1161, and IBM1162 charsets.
3565 * Andreas Jaeger contributed a port to x86-64/Linux.
3567 * Peter Bruin contributed a port to PowerPC/Hurd.
3569 * libc functions using I/O streams now can handle wide-oriented streams
3572 * optimizations in the dynamic linker. Binaries created by recent binutils
3573 versions start up quicker due to reduced time spent on relocations.
3575 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
3579 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
3580 asinh, atanh, j0 for the 128-bit long double format.
3582 * Bruno Haible updated all the code handling Unicode in some form to
3583 support Unicode 3.1.
3585 * Speed of regex for single-byte locales is back to previous levels.
3586 Patch by Isamu Hasegawa.
3588 * Alpha, SPARC, and IA-64 now also using floating stacks.
3590 * Startup time of internationalized applications greatly improved through
3591 iconv cache. Use iconvconfig to generate the cache file.
3592 Contributed by Ulrich Drepper.
3594 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
3595 severe performance problems. Patch by David Mosberger.
3597 * The Hurd port got a lot more functionality like AIO, various stdio
3598 extensions, etc. Mainly done by Roland McGrath.
3600 * mtrace can now lookup symbols in shared libraries.
3604 * Intel's IA-64 math library is largely integrated. It provides fast and
3605 accurate implementatations for most basic and standard math functions
3606 in float, double, and long double format.
3608 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
3609 and asin for the 96-bit long double format and asin, log, tan for the
3610 128-bit long double format.
3612 * The beginning of a last-bit accurate math library by IBM Haifa were added.
3613 The basic double functions exist today. Contributed by Abraham Ziv
3614 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
3615 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
3617 * An asynchronous name lookup library was added. The interface is designed
3618 after POSIX AIO. The proposal was circulated beforehand to get comments.
3619 No negative ones came in. Implemented by Ulrich Drepper.
3621 * Port to S390/64bit contributed by Martin Schwidefsky
3622 <schwidefsky@de.ibm.com>.
3624 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
3625 of functions for Linux/IA-64.
3627 * The RPC code is now thread safe. Threads can now use the same service
3628 of different services at the same time. Patch by Eric Norum
3629 <eric.norum@usask.ca> with some help by Ulrich Drepper.
3631 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
3632 family of functions for Linux/S390.
3634 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
3635 of functions for Linux/x86.
3637 * Port to Linux/CRIS contributed by Axis Communications.
3641 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
3642 we can now check for namespace violations and missing declarations. The
3643 result is that almost all headers are now Unix-compliant (as defined in
3644 the upcoming XPG6). The negative side is that some programs might need
3645 corrections, too, if they depend on the incorrect form of the headers in
3646 previous versions which defined too many symbols and included too many
3649 * regex now handles multibyte character sets correctly.
3650 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
3652 * iconv (the program) does now conform to the upcoming XPG6 and handles
3653 charmaps. Instead of the charset names the path of charmaps can be
3654 provided and the conversion happens based on this data.
3655 Contributed by Ulrich Drepper.
3657 * The locale program now provides detailed information about the installed
3662 only lists the names of the supported locales
3666 provides details such as country, language, and codeset name.
3667 Contributed by Ulrich Drepper.
3671 * The gencat program now parses the input file according to the charset
3672 selected by the LC_CTYPE category. This is important for stateful
3673 character sets. To make generating catalogs easier there is a way
3674 to overwrite the charset selected by the locale: before the first
3675 message or $ quote line the catalog can contain a line like
3677 $ codeset=ISO-8859-2
3679 to select the charset (ISO-8859-2 in this case).
3681 Implemented by Shinya Hanataka and Ulrich Drepper.
3683 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
3684 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
3685 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
3687 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
3688 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
3690 * The LANGUAGE environment variable is now ignored unless the locale is
3691 changed from the default "C" locale.
3693 * The usual bug fixes.
3697 * Greg McGary added runtime support for bounds checking using gcc's
3698 new -fbounded-pointers option. ix86 target is complete. PowerPC
3701 * Thorsten Kukuk added secure mode support to nscd.
3703 * The Berkeley db libraries have been removed.
3705 Related, the nss_db module is now in a separate package since it
3706 obviously requires a database library being available.
3708 * Wide character I/O streams implemented by Ulrich Drepper.
3710 * Functions from the extended socket API added by Ulrich Drepper.
3712 * Functions feenableexcept and fedisableexcept to control the
3713 behaviour of individual exceptions have been added by Andreas Jaeger.
3715 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
3717 * The resolver code has been updated from bind 8.2.3-T5B which supports
3718 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
3721 This change could in some situations effect backward compatibility. Since
3722 now `_res' is a thread-local instead of a global variable, modifying it
3723 in one thread does not have any effect in other threads.
3725 The resolver library was also extended to allow IPv6 as the transport
3726 protocol for the requests. This work was done by Stig Venaas.
3728 * Compatibility code for K&R C compilers has been removed from the
3729 header files. A ISO C compiler is needed to use the library
3730 (conforming to either C89 or C99 standard).
3732 * Complete rewrite of the localedef program to support multibyte character
3733 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
3734 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
3735 Implemented by Ulrich Drepper.
3737 Bruno Haible significantly improved the generation and use of the data
3738 structures for the wide character tables.
3740 * Plural handling in gettext implemented by Ulrich Drepper.
3742 * The utmp daemon has been removed.
3744 * The port to MIPS-Linux has been finished by Andreas Jaeger.
3746 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
3749 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
3751 * POSIX barriers implemented by Kaz Kylheku.
3753 * POSIX spawn function family implemented by Ulrich Drepper.
3755 * POSIX spinlocks are now available.
3757 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
3759 * the configure option --enable-kernel=X.Y.Z allows to strip out
3760 compatibility for kernel versions before X.Y.Z. This is currently only
3761 implemented for Linux.
3763 * the sockaddr_in6 structure changed. The IPv6 working group added a new
3764 field sin6_scope_id. This means that all programs using IPv6 should be
3765 recompiled. Don't expect binary compatibility with previous glibc
3768 * various conversion modules for IBM character sets contributed by
3771 * IA-64 port by Jes Sorensen and HJ Lu.
3785 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
3787 * New xdr functions are added; some rpc functions are now 64bit clean.
3789 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
3791 * Fixed known incompatibilities with glibc 2.0.
3793 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
3795 * Optimized a number of functions (especially the ELF dynamic loader).
3797 * Update timezone data files.
3799 * lots of charmaps corrections
3801 * some new locale definitions and charmaps
3806 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
3807 conform to POSIX member type requirements. Symbol versions have been
3808 adjusted as needed within the library, and for direct use by applications,
3809 but there is potential for problems if third-party libraries use
3810 struct timeval as part of their interface. This does not present
3811 a problem for X and other "essential" system libraries.
3813 * An additional locale model to support C++ Standard Library locale
3814 model and probably more was implemented by Ulrich Drepper.
3816 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
3819 * Miles Bader provided the `argp' function family to support hierachical
3820 command line argument parsing, layered on top of getopt.
3822 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
3824 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
3827 * scanf recognizes the %a and %A format for scanning floating point numbers.
3829 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
3830 information and interfaces for the available integer types.
3832 * about 130 new math functions were added to implement the ISO C9x math
3835 * the new header <complex.h> contains definitions of the complex math
3836 functions from ISO C 9X.
3838 * the new header <tgmath.h> defines generic macros to use complex or
3839 real valued functions.
3841 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
3843 * Andreas Jaeger provided a test suite for the math library.
3845 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
3847 * Ulrich Drepper added character set conversion functions (iconv).
3849 * Optimized string functions have been added.
3851 * The localedata addon is now part of glibc.
3853 * An implementation of profiling shared libraries was added by Ulrich Drepper.
3855 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
3856 daemon for NSS (nscd).
3858 Missing a better place here are some numbers on improvements. Under
3859 Linux 2.1.125 un-tar-ing the kernel sources takes
3863 using local files 12.19s 6.88s 22.91s
3865 using NIS 13.92s 8.91s 26.34s
3867 using NIS & nscd 10.37s 7.34s 25.30s
3869 using NIS+ 27.57s 30.37s 640.46s
3871 using NIS+ & nscd 10.25s 7.83s 26.51s
3873 using NIS & old nscd [1] 13.83s 8.32s 29.60s
3875 Keep in mind that non-namelookup related operations dominate above times.
3876 It was just a common complain that using NIS+ unpacking the kernel is
3879 [1] The old nscd implementation is not available anymore since it was
3880 distributed with glibc up to version 2.0.98 and thus is now replaced.
3882 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
3884 * Mark Kettenis provided a Hesiod NSS module.
3886 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
3887 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
3889 * rcmd can now handle netgroups (Dick Streefland).
3891 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
3894 * Support for the IPv6 protocol has been added to the socket API, as per the
3895 latest draft standards.
3897 * Support for Linux 2.2 has been added.
3899 * Interface changes relative to the latest 2.0.x release:
3900 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3901 addseverity NEW: Unix98
3902 alphasort64 NEW: LFS
3903 argp_err_exit_status NEW: argp, GNU ext
3904 argp_error NEW: argp, GNU ext
3905 argp_failure NEW: argp, GNU ext
3906 argp_help NEW: argp, GNU ext
3907 argp_parse NEW: argp, GNU ext
3908 argp_program_bug_address NEW: argp, GNU ext
3909 argp_program_version NEW: argp, GNU ext
3910 argp_program_version_hook NEW: argp, GNU ext
3911 argp_state_help NEW: argp, GNU ext
3912 argp_usage NEW: argp, GNU ext
3913 authdes_create NEW: Secure RPC
3914 authdes_getucred NEW: Secure RPC
3915 authdes_pk_create NEW: Secure RPC
3916 backtrace NEW: GNU ext.
3917 backtrace_symbols NEW: GNU ext.
3918 backtrace_symbols_fd NEW: GNU ext.
3920 cacosf NEW: ISO C 9x
3921 cacosh NEW: ISO C 9x
3922 cacoshf NEW: ISO C 9x
3923 cacoshl NEW: ISO C 9x
3924 cacosl NEW: ISO C 9x
3931 casinf NEW: ISO C 9x
3932 casinh NEW: ISO C 9x
3933 casinhf NEW: ISO C 9x
3934 casinhl NEW: ISO C 9x
3935 casinl NEW: ISO C 9x
3937 catanf NEW: ISO C 9x
3938 catanh NEW: ISO C 9x
3939 catanhf NEW: ISO C 9x
3940 catanhl NEW: ISO C 9x
3941 catanl NEW: ISO C 9x
3942 cbc_crypt NEW: Secure RPC
3946 ccoshf NEW: ISO C 9x
3947 ccoshl NEW: ISO C 9x
3953 cimagf NEW: ISO C 9x
3954 cimagl NEW: ISO C 9x
3955 clearerr_locked REMOVED
3956 clntunix_create NEW: sunrpc ext
3958 clog10 NEW: ISO C 9x
3959 clog10f NEW: ISO C 9x
3960 clog10l NEW: ISO C 9x
3970 cprojf NEW: ISO C 9x
3971 cprojl NEW: ISO C 9x
3973 crealf NEW: ISO C 9x
3974 creall NEW: ISO C 9x
3979 csinhf NEW: ISO C 9x
3980 csinhl NEW: ISO C 9x
3983 csqrtf NEW: ISO C 9x
3984 csqrtl NEW: ISO C 9x
3988 ctanhf NEW: ISO C 9x
3989 ctanhl NEW: ISO C 9x
3991 des_setparity NEW: Secure RPC
3992 ecb_crypt NEW: Secure RPC
3993 endutxent NEW: Unix98
3995 exp10f NEW: ISO C 9x
3996 exp10l NEW: ISO C 9x
4000 fattach NEW: STREAMS
4001 fdetach NEW: STREAMS
4005 feclearexcept NEW: ISO C 9x
4006 fegetenv NEW: ISO C 9x
4007 fegetexceptflag NEW: ISO C 9x
4008 fegetround NEW: ISO C 9x
4009 feholdexcept NEW: ISO C 9x
4011 feraiseexcept NEW: ISO C 9x
4012 ferror_locked REMOVED
4013 fesetenv NEW: ISO C 9x
4014 fesetexceptflag NEW: ISO C 9x
4015 fesetround NEW: ISO C 9x
4016 fetestexcept NEW: ISO C 9x
4017 feupdateenv NEW: ISO C 9x
4018 fflush_locked REMOVED
4022 fgets_unlocked NEW: GNU ext.
4023 fileno_locked REMOVED
4035 fputc_locked REMOVED
4036 fputs_unlocked NEW: GNU ext.
4037 fread_unlocked NEW: GNU ext.
4042 fstatvfs NEW: Unix98
4046 ftruncate64 NEW: LFS
4048 fwrite_unlocked NEW: GNU ext.
4049 gai_strerror NEW: IPv6
4053 getchar_locked REMOVED
4055 getdate_err NEW: Unix98
4056 getdate_r NEW: GNU ext.
4058 getnameinfo NEW: IPv6
4059 getnetname NEW: Secure RPC
4060 getpmsg NEW: STREAMS
4061 getpt NEW: Unix98 PTY
4062 getrlimit64 NEW: LFS
4063 getutxent NEW: Unix98
4064 getutxid NEW: Unix98
4065 getutxline NEW: Unix98
4066 glob64 NEW: GNU ext.
4067 globfree64 NEW: GNU ext.
4068 gnu_get_libc_release NEW: GNU ext.
4069 gnu_get_libc_version NEW: GNU ext.
4070 grantpt NEW: Unix98 PTY
4071 host2netname NEW: Secure RPC
4073 iconv_close NEW: iconv
4074 iconv_open NEW: iconv
4075 if_freenameindex NEW: IPv6
4076 if_indextoname NEW: IPv6
4077 if_nameindex NEW: IPv6
4078 if_nametoindex NEW: IPv6
4079 in6addr_any NEW: IPv6
4080 in6addr_loopback NEW: IPv6
4081 inet6_isipv4mapped NEW: IPv6
4082 isastream NEW: STREAMS
4083 iswblank NEW: GNU ext.
4084 key_decryptsession NEW: Secure RPC
4085 key_decryptsession_pk NEW: Secure RPC
4086 key_encryptsession NEW: Secure RPC
4087 key_encryptsession_pk NEW: Secure RPC
4088 key_gendes NEW: Secure RPC
4089 key_get_conv NEW: Secure RPC
4090 key_secretkey_is_set NEW: Secure RPC
4091 key_setnet NEW: Secure RPC
4092 key_setsecret NEW: Secure RPC
4093 llrint NEW: ISO C 9x
4094 llrintf NEW: ISO C 9x
4095 llrintl NEW: ISO C 9x
4096 llround NEW: ISO C 9x
4097 llroundf NEW: ISO C 9x
4098 llroundl NEW: ISO C 9x
4103 lrintf NEW: ISO C 9x
4104 lrintl NEW: ISO C 9x
4105 lround NEW: ISO C 9x
4106 lroundf NEW: ISO C 9x
4107 lroundl NEW: ISO C 9x
4109 makecontext NEW: Unix98
4110 mempcpy NEW: GNU ext.
4113 modify_ldt NEW: kernel
4117 nearbyint NEW: ISO C 9x
4118 nearbyintf NEW: ISO C 9x
4119 nearbyintl NEW: ISO C 9x
4120 netname2host NEW: Secure RPC
4121 netname2user NEW: Secure RPC
4122 nexttoward NEW: ISO C 9x
4123 nexttowardf NEW: ISO C 9x
4124 nexttowardl NEW: ISO C 9x
4128 passwd2des NEW: Secure RPC
4130 pow10f NEW: GNU ext.
4131 pow10l NEW: GNU ext.
4134 printf_size NEW: GNU ext.
4135 printf_size_info NEW: GNU ext.
4136 profil_counter REMOVED
4137 pthread_mutexattr_getkind_np REPLACED
4138 pthread_mutexattr_setkind_np REPLACED
4139 ptsname NEW: Unix98 PTY
4140 ptsname_r NEW: Unix98 PTY
4142 putchar_locked REMOVED
4143 putgrent NEW: GNU ext.
4145 putpmsg NEW: STREAMS
4146 pututxline NEW: Unix98
4150 readdir64_r NEW: LFS
4151 remquo NEW: ISO C 9x
4152 remquof NEW: ISO C 9x
4153 remquol NEW: ISO C 9x
4155 roundf NEW: ISO C 9x
4156 roundl NEW: ISO C 9x
4158 scalbln NEW: ISO C 9x
4159 scalblnf NEW: ISO C 9x
4160 scalblnl NEW: ISO C 9x
4162 sendfile NEW: kernel
4163 setcontext NEW: Unix98
4164 setrlimit64 NEW: LFS
4165 setutxent NEW: Unix98
4167 sigignore NEW: Unix98
4168 sigqueue NEW: POSIX.1b
4169 sigrelse NEW: Unix98
4170 sigset NEW: POSIX.1b
4171 sigtimedwait NEW: POSIX.1b
4172 sigwaitinfo NEW: POSIX.1b
4173 sincos NEW: GNU ext.
4174 sincosf NEW: GNU ext.
4175 sincosl NEW: GNU ext.
4179 strcasestr NEW: GNU ext.
4180 strtoimax NEW: ISO C 9x
4181 strtoumax NEW: ISO C 9x
4182 strverscmp NEW: GNU ext.
4183 svcauthdes_stats NEW: Secure RPC
4184 svcunix_create NEW: sunrpc etx
4185 svcunixfd_create NEW: sunrpc ext
4186 swapcontext NEW: Unix98
4187 tcgetsid NEW: Unix98 PTY
4188 tdestroy NEW: GNU ext.
4189 tgamma NEW: ISO C 9x
4190 tgammaf NEW: ISO C 9x
4191 tgammal NEW: ISO C 9x
4195 truncf NEW: ISO C 9x
4196 truncl NEW: ISO C 9x
4198 unlockpt NEW: Unix98 PTY
4199 updwtmpx NEW: Unix98
4200 user2netname NEW: Secure RPC
4201 utmpxname NEW: Unix98
4202 versionsort NEW: GNU ext.
4203 versionsort64 NEW: GNU ext.
4205 wcscasecmp NEW: GNU ext.
4206 wcsncasecmp NEW: GNU ext.
4207 wcsnlen NEW: GNU ext.
4208 wcstoimax NEW: ISO C 9x
4209 wcstoll NEW: ISO C 9x
4210 wcstoull NEW: ISO C 9x
4211 wcstoumax NEW: ISO C 9x
4213 wordexp NEW: POSIX.2
4214 wordfree NEW: POSIX.2
4215 write_profiling REMOVED
4216 xdecrypt NEW: Secure RPC
4217 xdr_authdes_cred NEW: Secure RPC
4218 xdr_authdes_verf NEW: Secure RPC
4219 xdr_cryptkeyarg NEW: Secure RPC
4220 xdr_cryptkeyarg2 NEW: Secure RPC
4221 xdr_cryptkeyres NEW: Secure RPC
4222 xdr_getcredres NEW: Secure RPC
4223 xdr_key_netstarg NEW: Secure RPC
4224 xdr_key_netstres NEW: Secure RPC
4225 xdr_keybuf NEW: Secure RPC
4226 xdr_keystatus NEW: Secure RPC
4227 xdr_netnamestr NEW: Secure RPC
4228 xdr_sizeof NEW: Secure RPC
4229 xdr_unixcred NEW: sunrpc ext
4230 xencrypt NEW: Secure RPC
4231 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4242 * inet_ntoa is thread-safe
4244 * updwtmp is moved from libutil to libc
4246 * rewrite of cbrt function
4248 * update of timezone data
4262 * add atoll function
4264 * fix complex problems in Berkeley DB code
4266 * fix math functions
4270 * fixed lots of header problems (especially Linux/GNU specific)
4272 * dynamic loader preserves all registers
4274 * Roland McGrath provided support for handling of auxiliary objects in
4275 the ELF dynamic loader.
4277 * support for parallel builds is improved
4281 * GNU extensions are no longer declared by default. To enable them you
4282 must define the macro `_GNU_SOURCE' in your program or compile with
4285 * The library has changed from using GNU ld symbol aliases to using weak
4286 symbols where available. The ELF object file format supports weak
4287 symbols; GNU ld also supports weak symbols in the a.out format. (There
4288 is also now support for other GNU ld extensions in ELF. Use the
4289 `--with-elf' option to configure to indicate you have ELF, and
4290 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
4291 of many files which contained only symbol aliases, reducing the size of
4292 the source and the compiled library; many other files were renamed to
4293 less cryptic names previously occupied by the symbol alias files.
4294 There is a new header file <elf.h> for programs which operate on
4295 files in the ELF format.
4297 * Converted to Autoconf version 2, so `configure' has more options.
4298 Run `configure --help' to see the details.
4300 * The library can now be configured to build profiling, highly-optimized
4301 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
4302 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
4303 `configure' enable building these extra libraries. The shared library is
4304 built by default when using both ELF and GNU ld. When shared libraries
4305 are enabled, the new library `-ldl' is available for arbitrary run-time
4306 loading of shared objects; its interface is defined in <dlfcn.h>. The
4307 new header file <link.h> gives access to the internals of the run-time
4308 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
4309 application of same name on other systems and it provides information
4310 about dynamically linked binaries.
4312 * The C library now provides the run-time support code for profiling
4313 executables compiled with `-pg'. Programs can control the profiling code
4314 through the interface in <sys/gmon.h>. The `gmon.out' files written by
4315 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
4316 the support for this file format was contributed by David Mosberger-Tang.
4318 * The math code has been replaced with a math library based on fdlibm from
4319 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
4320 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
4321 functions. The math functions now reside in a separate library, so
4322 programs using them will need to use `-lm' their linking commands.
4324 * John C. Bowman contributed optimized ix87 assembler inline functions.
4326 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
4327 mechanism similar to that found in Solaris 2. This is now used for the
4328 group, passwd, hosts, networks, services, protocols, rpc, ethers,
4329 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
4330 file controls what services are used for each individual database. This
4331 works by loading shared libraries with names specified in `nsswitch.conf',
4332 so service modules can be changed or added at any time without even
4333 relinking any program. Currently there are the file, db, and NIS based
4334 NSS services available.
4336 * The new functions `strtoq' and `strtouq' parse integer values from
4337 strings, like `strtol' and `strtoul', but they return `long long int' and
4338 `unsigned long long int' values, respectively (64-bit quantities).
4340 * The new functions `strtof' and `strtold' parse floating-point values from
4341 strings, like `strtod', but they return `float' and `long double' values,
4342 respectively (on some machines `double' and `long double' are the same).
4344 * Ulrich Drepper has contributed new implementations of the floating-point
4345 printing and reading code used in the `printf' family of functions and
4346 `strtod', `strtof', and `strtold'. These new functions are perfectly
4347 accurate, and much faster than the old ones.
4349 * The implementation of the POSIX locale model was completely rewritten by
4350 Ulrich Drepper. This includes the new programs `localedef' and `locale'
4351 to compile the POSIX locale definition.
4353 * The former dummy implementations of the strcoll and strxfrm function are
4354 now replaced by fully functional code contributed by Ulrich Drepper. The
4355 collation information comes from the POSIX locale definitions.
4357 * The new header <langinfo.h> defines an interface for accessing
4358 various locale-dependent data (using the locale chosen with `setlocale').
4360 * Ulrich Drepper has contributed a new suite of functions for operation on
4361 wide-character and multibyte-character strings, in <wchar.h>;
4362 and classification and case conversion of wide characters, in <wctype.h>.
4363 These new functions are conforming to the ISO C, Amendement 1 specification.
4365 * There is now a second implementation of the standard I/O library available.
4366 It comes from GNU libg++ as was written by Per Bothner, heavily modified
4367 by Hongjiu Lu and made thread safe by Ulrich Drepper.
4369 * You can now use positional parameter specifications in format strings
4370 for the `printf' and `scanf' families of functions. For example,
4371 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
4372 ``Number 6, Mr Jones''. This is mainly useful when providing different
4373 format strings for different languages, whose grammars may dictate
4374 different orderings of the values being printed. To support this
4375 feature, the interface for `register_printf_handler' has changed; see
4376 the header file <printf.h> for details.
4378 * The `printf' and `scanf' families of functions now understand a new
4379 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
4380 to group numbers as indicated by the locale; for `scanf' and friends, this
4381 says to accept as valid only a number with all the proper grouping
4382 separators in the right places. In the default "C" locale, numbers are
4383 not grouped; but locales for specific countries will define the usual
4384 conventions (i.e. separate thousands with `,' in the US locale).
4386 * The pgrp functions have been regularized, slightly incompatibly but much
4387 less confusingly. The core functions are now `getpgid' and `setpgid',
4388 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
4389 argument) and BSD `setpgrp' (identical to `setpgid') functions are
4390 provided for compatibility. There is no longer an incompatible `getpgrp'
4391 with an argument declared under _BSD_SOURCE; no BSD code uses it.
4393 * The new header file <fts.h> and suite of functions simplify programs that
4394 operate on directory trees. This code comes from 4.4 BSD.
4396 * The resolver code has been updated from the BIND 4.9.5-P1 release.
4397 Parts of the code were heavily modified by Ulrich Drepper to fit in the
4398 NSS scheme used in glibc.
4400 * There is a new malloc debugging hook `__memalign_hook'.
4402 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
4403 `unsigned int' in <sys/types.h>. These are for compatibility only and
4404 their use is discouraged.
4406 * The `-lmcheck' library to enable standard malloc debugging hooks is now
4407 done differently, so that it works even without GNU ld.
4409 * New function `euidaccess' checks allowed access to a file like `access',
4410 but using the effective IDs instead of the real IDs.
4412 * The time zone data files have been updated for the latest and greatest
4413 local time conventions of the countries of the world.
4415 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
4418 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
4419 for formatting floating-point numbers. They are provided only for
4420 compatibility; new programs should use `sprintf' instead. There are
4421 also equivalent function for the `long double' floating-point type and
4422 all functions also exist in a reentrant form.
4424 * The new auxiliary library `-lutil' from 4.4 BSD contains various
4425 functions for maintaining the login-record files (primarily of use to
4426 system programs such as `login'), and convenient functions for
4427 allocating and initializing a pseudo-terminal (pty) device.
4429 * Ulrich Drepper has contributed new support for System V style
4430 shared memory and IPC on systems that support it.
4432 * Ulrich Drepper has contributed several miscellaneous new functions found
4433 in System V: The `hsearch' family of functions provide an effective
4434 implementation of hash tables; `a64l' and `l64a' provide a very simple
4435 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
4438 * Ulrich Drepper has contributed new reentrant counterparts for the
4439 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
4441 * Ulrich Drepper has contributed new, highly-optimized versions of several
4442 string functions for the i486/Pentium family of processors.
4444 * Ulrich Drepper has updated the Linux-specific code, based largely
4445 on work done in Hongjiu Lu's version of GNU libc for Linux.
4446 The GNU library now supports Linux versions 2.0.10 and later,
4447 using the ELF object file format (i[3456]86-*-linux).
4449 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
4451 * David Mosberger-Tang and Richard Henderson have ported the C library
4452 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
4453 dynamic linking support for ELF/Alpha.
4455 * Richard Henderson contributed several Alpha optimized assembler function
4456 for arithmetic and string handling.
4458 * Ulrich Drepper has contributed a new set of message catalog functions to
4459 support multiple languages using the <libintl.h> interface, for use with
4460 his new package GNU gettext. Translation volunteers have contributed
4461 catalogs of the library's messages in Spanish, German, and Korean.
4463 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
4464 program and the `catgets' function for reading the catalog files it
4465 creates. (The <libintl.h> interface is preferred; we include the
4466 <nl_types.h> interface using `catgets' only for source compatibility with
4467 programs already written to use it.)
4469 * New header file <values.h> gives SVID-compatible names for <limits.h>
4472 * Various new macros, declarations, and small header files for compatibility
4475 * New function `group_member' is a convenient way to check if a process has
4476 a given effective group ID.
4478 * When using GCC 2.7 and later, the socket functions are now declared in a
4479 special way so that passing an argument of type `struct sockaddr_in *',
4480 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
4481 `struct sockaddr *' type, does not generate a type-clash warning.
4483 * New function `error' declared in header file <error.h> is a convenient
4484 function for printing error messages and optionally exiting; this is the
4485 canonical function used in GNU programs. The new functions `err', `warn',
4486 and friends in header file <err.h> are the canonical 4.4 BSD interface for
4487 doing the same thing.
4489 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
4490 POSIX.2 `glob' function to do ~ and {...} expansion.
4492 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
4493 `clearenv' which is used in POSIX.9 is also available.
4495 * New function `getsid' returns session ID number on systems that support it.
4497 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
4498 files <db.h> and <mpool.h> provide a rich set of functions for several
4499 types of simple databases stored in memory and in files, and <ndbm.h> is
4500 an old `ndbm'-compatible interface using the `db' functions. Link with
4501 `-ldb' to get these functions.
4503 * New macro `strdupa' copies a string like `strdup', but uses local stack
4504 space from `alloca' instead of dynamic heap space from `malloc'.
4506 * New function `strnlen' is like `strlen' but searches only a given maximum
4507 number of characters for the null terminator. `stpncpy', `strndup' and
4508 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
4511 * New function `statfs' in header <sys/statfs.h>.
4513 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
4514 provide convenient functions for operating on blocks of null-terminated
4517 * A new suite of functions in <utmp.h> handle all the details of reading
4518 and writing the utmp file.
4520 * An implementation of the NIS/YP(tm) based NSS service was contributed by
4523 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
4524 completely POSIX compliant and also implemented the extended functionality
4525 to handle alternate digit representation and alternate era date formats.
4527 * Ulrich Drepper provided an implementation of the `strptime' function
4528 defined in XPG4.2 which transforms a string into a `struct tm' value.
4530 * Paul Eggert provided the tzselect shell script as part of the timezone
4531 code. The shell script makes it easy to select the correct timezone
4534 * The implementation of the malloc family of functions is completely replaced
4535 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
4536 The implementation uses the mmap function (if available) and it is
4537 optimized for the use in multi threaded programs.
4539 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
4540 functions. This new functionality is usable by specifying a special
4541 salt string and it is compatible with implementation on *BSD systems.
4543 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
4544 `getsubopt' to handle second level command line options, `bsd_signal'
4545 to access BSD style `signal' functionality, the obsolete `regexp' style
4548 * the `lchown' function is available on system which support this
4551 * The implementation of the shadow password handling function was contributed
4554 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
4556 * POSIX.1g support was added. The <sys/select.h> header is available,
4557 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
4558 implementation of `getaddrinfo'.
4562 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
4564 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
4565 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
4567 * The new function `daemon' from 4.4 BSD is useful for server programs that
4568 want to put themselves in the background.
4570 * Joel Sherrill has contributed support for several standalone boards that
4571 run without an operating system.
4573 * `printf', `scanf' and friends now accept a `q' type modifier for long
4574 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
4576 * All of the code taken from BSD (notably most of the math and networking
4577 routines) has been updated from the BSD 4.4-Lite release.
4579 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
4581 * The new functions `getdomainname' and `setdomainname' fetch or change the
4582 YP/NIS domain name. These are system calls which exist on systems which
4585 * The time zone data files have been updated for the latest international
4588 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
4589 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
4593 * The C library now includes support for Sun RPC, from Sun's free
4594 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
4595 are included. (There is still no support for YP.)
4597 * Tom Quinn has contributed a port of the C library to SGI machines running
4598 Irix 4 (mips-sgi-irix4).
4600 * The new `lockf' function is a simplified interface to the locking
4601 facilities of `fcntl', included for compatibility.
4603 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
4605 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
4607 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
4610 * The error message printed by `assert' for a failed assertion now includes
4611 the name of the program (if using GNU ld) and the name of the calling
4612 function (with versions of GCC that support this).
4614 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
4616 * The library now includes the <sys/mman.h> header file and memory
4617 management functions `mmap', `munmap', `mprotect', `msync', and
4618 `madvise', on systems that support those facilities.
4620 * The interface for `mcheck' has changed slightly: the function called to
4621 abort the program when an allocation inconsistency is detected now takes
4622 an argument that indicates the type of failure. The new function
4623 `mprobe' lets you request a consistency check for a particular block at
4624 any time (checks are normally done only when you call `free' or `realloc'
4627 * It is now possible to easily cross-compile the C library, building on one
4628 system a library to run on another machine and/or operating system. All
4629 you need to do is set the variable `HOST_CC' in `configparms' to the
4630 native compiler for programs to run on the machine you are building on (a
4631 few generator programs are used on Unix systems); set `CC' to the
4634 * The new function `fexecve' (only implemented on the GNU system) executes
4635 a program file given a file descriptor already open on the file.
4639 * Brendan Kehoe has contributed most of a port to the DEC Alpha
4640 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
4642 * You can set the variable `libprefix' in `configparms' to specify a prefix
4643 to be prepended to installed library files; this makes it easy to install
4644 the GNU C library to be linked as `-lgnuc' or whatever.
4646 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
4647 copies a limited number of characters from a string, and returns the
4648 address of the last character written.
4650 * You no longer need to check for whether the installed `stddef.h' is
4651 compatible with the GNU C library. configure now checks for you.
4653 * You can now define a per-stream `fileno' function to convert the
4654 stream's cookie into an integral file descriptor.
4656 * ``malloc (0)'' no longer returns a null pointer. Instead, it
4657 allocates zero bytes of storage, and returns a unique pointer which
4658 you can pass to `realloc' or `free'. The behavior is undefined if
4659 you dereference this pointer.
4661 * The C library now runs on Sony NEWS m68k machines running either
4662 NewsOS 3 or NewsOS 4.
4664 * The new `syscall' function is a system-dependent primitive function
4665 for invoking system calls. It has the canonical behavior on Unix
4666 systems, including unreliable return values for some calls (such as
4667 `pipe', `fork' and `getppid').
4669 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
4670 to `EAGAIN', which is the preferred name. On systems whose kernels
4671 use two distinct codes, the C library now translates EWOULDBLOCK to
4672 EAGAIN in every system call function.
4676 * The GNU C Library Reference Manual is now distributed with the library.
4677 `make dvi' will produce a DVI file of the printed manual.
4678 `make info' will produce Info files that you can read on line using C-h i
4679 in Emacs or the `info' program.
4680 Please send comments on the manual to bug-glibc-manual@gnu.org.
4682 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
4684 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
4686 * Jason Merrill has contributed a port to the Sequent Symmetry running
4687 Dynix version 3 (i386-sequent-dynix).
4689 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
4690 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
4692 * New function `memory_warnings' lets you arrange to get warnings when
4693 malloc is running out of memory to allocate, like Emacs gives you.
4695 * The C library now contains the relocating allocator used in Emacs 19 for
4696 its editing buffers. This allocator (ralloc) minimizes allocation
4697 overhead and fragmentation by moving allocated regions around whenever it
4698 needs to. You always refer to a ralloc'd region with a "handle" (a
4699 pointer to a pointer--an object of type `void **').
4701 * There is a new `printf' format: `%m' gives you the string corresponding
4702 to the error code in `errno'.
4704 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
4705 or `%[' conversion, but instead of filling in a fixed-sized buffer you
4706 pass, the `a' modifier says to fill in a `char **' you pass with a
4709 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
4710 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
4711 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
4713 * `mkstemp' is a traditional Unix function to atomically create and open a
4714 uniquely-named temporary file.
4718 * The standard location for the file that says what the local timezone is
4719 has changed again. It is now `/usr/local/etc/localtime' (or more
4720 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
4722 * The distribution no longer contains any files with names longer than 14
4725 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
4726 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
4728 * New functions `ttyslot' and `syslog' from 4.4 BSD.
4732 * The configuration process has changed quite a bit. The `configure'
4733 script is now used just like the configuration scripts for other GNU
4734 packages. The `sysdeps' directory hierarchy is much rearranged.
4735 The file `INSTALL' explains the new scheme in detail.
4737 * The header files no longer need to be processed into ANSI C and
4738 traditional C versions. There is just one set of files to install, and
4739 it will work with ANSI or old C compilers (including `gcc -traditional').
4741 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
4742 MIPS DECStation running Ultrix 4.
4744 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
4745 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
4746 made itself into a shared library.
4748 * Yet further improved support for the i386, running 4.3 BSD-like systems
4749 (such as Mach 3 with the Unix single-server), or System V.
4751 * New function `strncasecmp' to do case-insensitive string comparison
4752 with limited length.
4754 * New function `strsep' is a reentrant alternative to `strtok'.
4756 * New functions `scandir' and `alphasort' for searching directories.
4758 * New function `setenv' is a better interface to `putenv'.
4760 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
4761 function for traversing a directory tree.
4763 * The GNU obstack package is now also part of the C library.
4764 The new function `open_obstack_stream' creates a stdio stream that
4765 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
4766 formatted output directly to an obstack.
4768 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
4769 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
4771 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
4773 * The new functions `strfry' and `memfrob' do mysterious and wonderful
4774 things to your strings.
4776 * There are some new test programs: test-fseek, testmb, and testrand.
4778 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
4779 These ports are not finished, but are a good starting place for really
4780 supporting those systems.
4782 * `/etc/localtime' is now the standard location for the file that says what
4783 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
4784 This follows the general principle that `/etc' is the place for all local
4785 configuration files.
4787 * The C library header files now use `extern "C"' when used by the C++
4788 compiler, so the C library should now work with C++ code.
4790 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
4791 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
4794 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
4795 function which uses the `merge sort' algorithm, and is said to be
4796 significantly faster than the old GNU `qsort' function. Merge sort is
4797 now the standard `qsort' function. The new algorithm can require a lot
4798 of temporary storage; so, the old sorting function is called when the
4799 required storage is not available.
4801 * The C library now includes Michael Glad's Ultra Fast Crypt, which
4802 provides the Unix `crypt' function, plus some other entry points.
4804 * The code and header files taken from 4.4 BSD have been updated with the
4805 latest files released from Berkeley.
4807 ----------------------------------------------------------------------
4808 Copyright information:
4810 Copyright (C) 1992-2018 Free Software Foundation, Inc.
4812 Permission is granted to anyone to make or distribute verbatim copies
4813 of this document as received, in any medium, provided that the
4814 copyright notice and this permission notice are preserved,
4815 thus giving the recipient permission to redistribute in turn.
4817 Permission is granted to distribute modified versions
4818 of this document, or of portions of it,
4819 under the above conditions, provided also that they
4820 carry prominent notices stating who last changed them.
4823 version-control: never