1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2017 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
12 * Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin and tan
13 with FMA, contributed by Arjan van de Ven and H.J. Lu from Intel.
15 * Optimized x86-64 trunc and truncf for processors with SSE4.1.
17 * Optimized generic expf, exp2f, logf, log2f and powf.
19 * In order to support faster and safer process termination the malloc API
20 family of functions will no longer print a failure address and stack
21 backtrace after detecting heap corruption. The goal is to minimize the
22 amount of work done after corruption is detected and to avoid potential
23 security issues in continued process execution. Reducing shutdown time
24 leads to lower overall process restart latency, so there is benefit both
25 from a security and performance perspective.
27 * The abort function terminates the process immediately, without flushing
28 stdio streams. Previous glibc versions used to flush streams, resulting
29 in deadlocks and further data corruption. This change also affects
30 process aborts as the result of assertion failures.
32 * On platforms where long double has the IEEE binary128 format (aarch64,
33 alpha, mips64, s390 and sparc), the math library now implements _Float128
34 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015. These
35 are the same interfaces added in version 2.26 for some platforms where
36 this format is supported but is not the format of long double.
38 Deprecated and removed features, and other changes affecting compatibility:
40 * On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
41 defined by <sys/ptrace.h>.
43 * libm no longer supports SVID error handling (calling a user-provided
44 matherr function on error) or the _LIB_VERSION variable to control error
45 handling. (SVID error handling and the _LIB_VERSION variable still work
46 for binaries linked against older versions of the GNU C Library.) The
47 libieee.a library is no longer provided. math.h no longer defines struct
48 exception, or the macros X_TLOSS, DOMAIN, SING, OVERFLOW, UNDERFLOW,
49 TLOSS, PLOSS and HUGE.
51 * The libm functions pow10, pow10f and pow10l are no longer supported for
52 new programs. Programs should use the standard names exp10, exp10f and
53 exp10l for these functions instead.
55 * The mcontext_t type is no longer the same as struct sigcontext. On
56 platforms where it was previously the same, this changes the C++ name
57 mangling for interfaces involving this type.
59 * The add-ons mechanism for building additional packages at the same time as
60 glibc has been removed. The --enable-add-ons configure option is now
63 Changes to build and runtime requirements:
65 [Add changes to build and runtime requirements here]
67 Security related changes:
69 CVE-2009-5064: The ldd script would sometimes run the program under
70 examination directly, without preventing code execution through the
71 dynamic linker. (The glibc project disputes that this is a security
72 vulnerability; only trusted binaries must be examined using the ldd
75 CVE-2017-15670: The glob function, when invoked with GLOB_TILDE,
76 suffered from a one-byte overflow during ~ operator processing (either
77 on the stack or the heap, depending on the length of the user name).
78 Reported by Tim Rühsen.
80 CVE-2017-15671: The glob function, when invoked with GLOB_TILDE,
81 would sometimes fail to free memory allocated during ~ operator
82 processing, leading to a memory leak and, potentially, to a denial
85 The following bugs are resolved with this release:
87 [The release manager will add the list generated by
88 scripts/list-fixed-bugs.py just before the release.]
95 * A per-thread cache has been added to malloc. Access to the cache requires
96 no locks and therefore significantly accelerates the fast path to allocate
97 and free small amounts of memory. Refilling an empty cache requires locking
98 the underlying arena. Performance measurements show significant gains in a
99 wide variety of user workloads. Workloads were captured using a special
100 instrumented malloc and analyzed with a malloc simulator. Contributed by
101 DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
103 * Unicode 10.0.0 Support: Character encoding, character type info, and
104 transliteration tables are all updated to Unicode 10.0.0, using
105 generator scripts contributed by Mike FABIAN (Red Hat).
106 These updates cause user visible changes, especially the changes in
107 wcwidth for many emoji characters cause problems when emoji sequences
108 are rendered with pango, see for example:
109 https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
111 * Collation of Hungarian has been overhauled and is now consistent with "The
112 Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
115 * Improvements to the DNS stub resolver, contributed by Florian Weimer:
117 - The GNU C Library will now detect when /etc/resolv.conf has been
118 modified and reload the changed configuration. The new resolver option
119 “no-reload” (RES_NORELOAD) disables this behavior.
121 - The GNU C Library now supports an arbitrary number of search domains
122 (configured using the “search” directive in /etc/resolv.conf);
123 previously, there was a hard limit of six domains. For backward
124 compatibility, applications that directly modify the ‘_res’ global
125 object are still limited to six search domains.
127 - When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
128 Library will now randomly pick a name server from the configuration as a
129 starting point. (Previously, the second name server was always used.)
131 * The tunables feature is now enabled by default. This allows users to tweak
132 behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
134 * New function reallocarray, which resizes an allocated block (like realloc)
135 to the product of two sizes, with a guaranteed clean failure upon integer
136 overflow in the multiplication. Originally from OpenBSD, contributed by
137 Dennis Wölfing and Rüdiger Sonderfeld.
139 * New wrappers for the Linux-specific system calls preadv2 and pwritev2.
140 These are extended versions of preadv and pwritev, respectively, taking an
141 additional flags argument. The set of supported flags depends on the
142 running kernel; full support currently requires kernel 4.7 or later.
144 * posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
145 create a new session ID for the spawned process. This feature is
146 scheduled to be added to the next major revision of POSIX; for the time
147 being, it is available under _GNU_SOURCE.
149 * errno.h is now safe to use from C-preprocessed assembly language on all
150 supported operating systems. In this context, it will only define the
151 Exxxx constants, as preprocessor macros expanding to integer literals.
153 * On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
154 128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
155 754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
156 Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
158 To compile programs that use this feature, the compiler must support
159 128-bit floating point with the type name _Float128 (as defined by TS
160 18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
161 C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
162 must be defined to make the new interfaces visible.
164 The new functions and macros correspond to those present for other
165 floating-point types (except for a few obsolescent interfaces not
166 supported for the new type), with F128 or f128 suffixes; for example,
167 strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
168 printf or scanf formats for the new type; the strfromf128 and strtof128
169 interfaces should be used instead.
171 Deprecated and removed features, and other changes affecting compatibility:
173 * The synchronization that pthread_spin_unlock performs has been changed to
174 now be equivalent to a C11 atomic store with release memory order to the
175 spin lock's memory location. Previously, several (but not all)
176 architectures used stronger synchronization (e.g., containing what is
177 often called a full barrier). This change can improve performance, but
178 may affect odd fringe uses of spin locks that depend on the previous
179 behavior (e.g., using spin locks as atomic variables to try to implement
180 Dekker's mutual exclusion algorithm).
182 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
185 * Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
186 will only be built and installed when the GNU C Library is configured with
187 --enable-obsolete-rpc. This allows alternative RPC implementations, such
188 as TIRPC or rpcsvc-proto, to be used.
190 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
191 libnss_compat, are deprecated, and will not be built or installed by
194 The NIS(+) support library, libnsl, is also deprecated. By default, a
195 compatibility shared library will be built and installed, but not headers
196 or development libraries. Only a few NIS-related programs require this
197 library. (In particular, the GNU C Library has never required programs
198 that use 'gethostbyname' to be linked with libnsl.)
200 Replacement implementations based on TIRPC, which additionally support
201 IPv6, are available from <https://github.com/thkukuk/>. The configure
202 option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
203 name service modules, to be built and installed.
205 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
206 support is enabled, the configured recursive resolver must support EDNS.
207 (Responding to EDNS-enabled queries with responses which are not
208 EDNS-enabled is fine, but FORMERR responses are not.)
210 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
211 servers have not supported this opcode for a long time.
213 * The _res_opcodes variable has been removed from libresolv. It had been
214 exported by accident.
216 * <string.h> no longer includes inline versions of any string functions,
217 as this kind of optimization is better done by the compiler. The macros
218 __USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
220 * The nonstandard header <xlocale.h> has been removed. Most programs should
221 use <locale.h> instead. If you have a specific need for the definition of
222 locale_t with no other declarations, please contact
223 libc-alpha@sourceware.org and explain.
225 * The obsolete header <sys/ultrasound.h> has been removed.
227 * The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
229 * The obsolete function cfree has been removed. Applications should use
232 * The stack_t type no longer has the name struct sigaltstack. This changes
233 the C++ name mangling for interfaces involving this type.
235 * The ucontext_t type no longer has the name struct ucontext. This changes
236 the C++ name mangling for interfaces involving this type.
238 * On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
239 the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
240 longer has the name struct mcontext. On SPARC GNU/Linux, the struct
241 mc_fq, struct rwindow, struct fpq and struct fq types are no longer
242 defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
243 mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
244 fpregset_t type no longer has the name struct fpu. This changes the C++
245 name mangling for interfaces involving those types.
247 * On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
248 synced with the kernel:
250 - PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
251 are not supported on this architecture and have been removed.
253 - PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
254 PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
255 PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
257 Programs that assume the GET/SETREGS ptrace requests are universally
258 available will now fail to build, instead of malfunctioning at runtime.
260 Changes to build and runtime requirements:
262 * Linux kernel 3.2 or later is required at runtime, on all architectures
263 supported by that kernel. (This is a change from version 2.25 only for
266 * GNU Binutils 2.25 or later is now required to build the GNU C Library.
268 * On most architectures, GCC 4.9 or later is required to build the GNU C
269 Library. On powerpc64le, GCC 6.2 or later is required.
271 Older GCC versions and non-GNU compilers are still supported when
272 compiling programs that use the GNU C Library. (We do not know exactly
273 how old, and some GNU extensions to C may be _de facto_ required. If you
274 are interested in helping us make this statement less vague, please
275 contact libc-alpha@sourceware.org.)
277 Security related changes:
279 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
280 to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
282 * LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
283 mode to guard against local privilege escalation attacks (CVE-2017-1000366).
285 * Avoid printing a backtrace from the __stack_chk_fail function since it is
286 called on a corrupt stack and a backtrace is unreliable on a corrupt stack
289 * A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
290 fixed (CVE-2017-12133).
292 The following bugs are resolved with this release:
294 [984] network: Respond to changed resolv.conf in gethostbyname
295 [5010] network: sunrpc service cleanup causes unwanted port mapper traffic
296 [12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
298 [12189] libc: __stack_chk_fail should not attempt a backtrace
300 [14096] time: Race condition on timezone/tst-timezone.out
301 [14172] localedata: az_IR: new locale
302 [14995] build: glibc fails to build if gold is the default linker, even if
304 [15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
305 [16637] network: inet_pton function is accepting IPv6 with bad format
306 [16640] string: string/strtok.c: undefined behaviour inconsistent between
307 x86 and other generic code
308 [16875] localedata: ko_KR: fix lang_name
309 [17225] localedata: ar_SY: localized month names for May and June are
311 [17297] localedata: da_DK: wrong date_fmt string
312 [18907] stdio: Incorrect order of __wur __THROW in <printf.h>
313 [18934] localedata: hu_HU: collate: fix multiple bugs and add tests
314 [18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
315 [19066] localedata: ar_SA abbreviated day and month names are in English
316 [19569] network: resolv: Support an arbitrary number of search domains
317 [19570] network: Implement random DNS server selection in the stub
319 [19838] locale: localedef fails on PA-RISC
320 [19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
321 order of 0D36 and 0D37
322 [19922] localedata: iso14651_t1_common: Define collation for Malayalam
324 [20098] libc: FAIL: debug/backtrace-tst on hppa
325 [20257] network: sunrpc: clntudp_call does not enforce timeout when
327 [20275] localedata: locale day/abday/mon/abmon should not have trailing
329 [20313] localedata: Update locale data to Unicode 9.0
330 [20424] manual: Document how to provide a malloc replacement
331 [20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
333 [20686] locale: Add el_GR@euro to SUPPORTED.
334 [20831] dynamic-link: _dl_map_segments does not test for __mprotect
335 failures consistently
336 [21015] dynamic-link: Document and fix --enable-bind-now
337 [21016] nptl: pthread_cond support is broken on hppa
338 [21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
339 frame-pointer on i386
340 [21049] libc: segfault in longjmp_chk() due to clobbered processor
342 [21075] libc: unused assigment to %g4 in sparc/sparc{64,32}/clone.S
343 [21088] libc: Build fails with --enable-static-nss
344 [21094] math: cosf(1.57079697) has 3 ulp error on targets where the
345 generic c code is used
346 [21109] libc: Tunables broken on big-endian
347 [21112] math: powf has large ulp errors with base close to 1 and exponent
349 [21115] network: sunrpc: Use-after-free in error path in clntudp_call
351 [21120] malloc: glibc malloc is incompatible with GCC 7
352 [21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
354 [21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
355 (-0.0) when linking with -lieee
356 [21171] math: log10, log2 and lgamma return incorrect results
357 [21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
358 [21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
359 [21207] localedata: ce_RU: update weekdays from CLDR
360 [21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
361 [21217] localedata: Update months from CLDR-31
362 [21232] libc: miss posix_fadvise64 on MIPS64 when static linking
363 [21243] libc: support_delete_temp_file should issue warning for failed
365 [21244] libc: support resolv_test_start() socket fd close should be
367 [21253] libc: localedef randomly segfaults when using -fstack-check due to
368 new posix_spawn implementation
369 [21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
370 leads to lower CPU frequency
371 [21259] libc: [alpha] termios.h missing IXANY for POSIX
372 [21261] libc: [sparc64] bits/setjmp.h namespace
373 [21267] network: [mips] bits/socket.h IOC* namespace
374 [21268] libc: [alpha] termios.h NL2, NL3 namespace
375 [21270] libc: mmap64 silently truncates large offset values
376 [21275] libc: posix_spawn always crashes on ia64 now
377 [21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
378 [21280] math: [powerpc] logbl for POWER7 return incorrect results
379 [21289] libc: Incorrect declaration for 32-bit platforms with
380 _FILE_OFFSET_BITS=64 causes build error
381 [21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
382 not support gethostbyname4_r
383 [21298] nptl: rwlock can deadlock on frequent reader/writer phase
385 [21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
387 [21340] libc: Support POSIX_SPAWN_SETSID
388 [21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
389 [21359] network: ns_name_pack needs additional byte in destination buffer
390 [21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
391 against fragmentation attacks (CVE-2017-12132)
392 [21369] network: resolv: Remove EDNS fallback
393 [21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
395 [21386] nptl: Assertion in fork for distinct parent PID is incorrect
396 [21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
397 [21393] stdio: Missing dup3 error check in freopen, freopen64
398 [21396] libc: Use AVX2 memcpy/memset on Skylake server
399 [21399] localedata: Bad description for U00EC in
400 localedata/charmaps/CP1254
401 [21411] malloc: realloc documentation error
402 [21426] network: sys/socket.h uio.h namespace
403 [21428] libc: [aarch64] tst-backtrace5 testsuite failure
404 [21445] libc: signal.h bsd_signal namespace
405 [21455] network: Network headers stdint.h namespace
406 [21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
408 [21475] network: resolv: Overlong search path is truncated mid-label
409 [21511] libc: sigstack namespace
410 [21512] libc: clone() ends up calling exit_group() through _exit() wrapper
411 [21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
412 bits/syscall.h: No such file or directory
413 [21517] libc: struct sigaltstack namespace
414 [21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
415 [21533] localedata: Update locale data to Unicode 10.0
417 ../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
418 junk at end of line, first unrecognized character is `@'
419 [21538] libc: SIG_HOLD missing for XPG4
420 [21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
421 request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
422 [21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
423 [21543] libc: sigevent namespace
424 [21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
425 size for general purpose registers in mcontext_t structure
426 [21550] libc: sigwait namespace
427 [21552] libc: XPG4 bsd_signal namespace
428 [21554] libc: sigpause namespace
429 [21560] libc: sys/wait.h signal.h namespace
430 [21561] libc: waitid namespace
431 [21573] nptl: GCC 7: /usr/bin/install: cannot remove
432 '/usr/include/stdlib.h': Permission denied
433 [21575] libc: sys/wait.h missing struct rusage definition
434 [21584] libc: sigaltstack etc namespace
435 [21597] libc: siginterrupt namespace
436 [21607] math: hppa: FAIL: math/test-tgmath
437 [21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
439 [21622] libc: [tile] missing SA_* for POSIX.1:2008
440 [21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
441 stack and heap (CVE-2017-1000366)
442 [21625] libc: wait3 namespace
443 [21654] nss: Incorrect pointer alignment in NSS group merge result
445 [21657] network: Parse interface zone id for node-local multicast
446 [21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
448 [21666] libc: .symver is used on common symbol
449 [21668] network: resolv: res_init cross-thread broadcast introduces race
451 [21687] math: tgmath.h totalorder, totalordermag return type
452 [21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
454 [21696] libc: Incorrect assumption of of __cpu_mask in
455 posix/sched_cpucount.c
456 [21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
457 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
459 [21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
460 leading to relocation crash
461 [21709] libc: resolv_conf.c:552: update_from_conf: Assertion
462 `resolv_conf_matches (resp, conf)' failed.
463 [21710] localedata: Added Samoan language locale for Samoa
464 [21711] localedata: Pashto yesstr/nostr locale are missing
465 [21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
466 __have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
467 [21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
468 [21723] localedata: yesstr/nostr missing for Chinese language locale
469 [21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
471 [21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
473 [21728] localedata: New Locale for Tongan language
474 [21729] localedata: incorrect LC_NAME fields for hi_IN
475 [21733] localedata: yesstr and nostr are missing for zh_HK
476 [21734] localedata: Missing yesstr and nostr are for kw_GB
477 [21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
478 [21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
479 [21742] libc: _dl_num_cache_relocations is undefined in libc.a
480 [21743] localedata: ks_IN@devanagari: abday strings mismatch the day
482 [21744] libc: Tests failing on --enable-tunables --enable-stack-
484 [21749] localedata: Wrong abbreviated day name (“abday”) for
486 [21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
487 [21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
488 [21759] localedata: missing yesstr and nostr for Tigrinya
489 [21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
490 [21766] localedata: Wrong LC_MESSAGES for om_ET Locale
491 [21767] localedata: Missing Bislama locales
492 [21768] localedata: Missing yesstr and nostr for aa_ET
493 [21770] localedata: Missing Field in li_NL
494 [21778] nptl: Robust mutex may deadlock
495 [21779] libc: MicroBlaze segfaults when loading libpthread
496 [21783] localedata: Fix int_select international_call_prefixes
497 [21784] localedata: Inconsistency in country_isbn
498 [21788] localedata: Missing Country Postal Abbreviations
499 [21794] localedata: Added-country_isbn-for-Italy
500 [21795] localedata: Add/Fix country_isbn for France
501 [21796] localedata: Added country_isbn for Republic of Korea
502 [21797] localedata: Fix inconsistency in country_isbn and missing prefixes
503 [21799] localedata: Added int_select international_call_prefixes
504 [21801] localedata: Added int_select international_call_prefixes
505 [21804] nptl: Double semicolon in thread-shared-types.h
506 [21807] localedata: LC_ADDRESS fix for pap_CW
507 [21808] localedata: Fix LC_ADDRESS for pap_AW
508 [21821] localedata: Added country_name in mai_IN
509 [21822] localedata: Fix LC_TIME for mai_IN
510 [21823] localedata: missing yesstr, nostr for sa_IN
511 [21825] localedata: Fix name_mrs for mag_IN
512 [21828] localedata: 2.26 changelog should mention user visible changes
514 [21835] localedata: Added Maithili language locale for Nepal
515 [21838] localedata: Removed redundant data for the_NP
516 [21839] localedata: Fix LC_MONETARY for ta_LK
517 [21844] localedata: Fix Latin characters and Months Sequence.
518 [21848] localedata: Fix mai_NP Title Name
523 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
524 24731-2:2010, is supported to enable declarations of functions from that
525 TR. Note that not all functions from that TR are supported by the GNU C
528 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
529 18661-1:2014, is supported to enable declarations of functions and macros
530 from that TS. Note that not all features from that TS are supported by
533 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
534 18661-4:2015, is supported to enable declarations of functions and macros
535 from that TS. Note that most features from that TS are not supported by
538 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
539 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
540 Since the GNU C Library defaults to a much newer revision of POSIX, this
541 will only affect programs that specifically request an old conformance
542 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
543 see a change in the visible declarations, but a program compiled with
544 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
547 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
548 defined by all multithreaded code, but glibc has not required this for
551 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
552 means that in a future release, the macros “major”, “minor”, and “makedev”
553 will only be available from <sys/sysmacros.h>.
555 These macros are not part of POSIX nor XSI, and their names frequently
556 collide with user code; see for instance glibc bug 19239 and Red Hat bug
557 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
558 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
561 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
562 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
563 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
565 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
566 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
567 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
568 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
569 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
570 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
571 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
572 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
573 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
574 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
575 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
578 * New <math.h> features are added from TS 18661-1:2014:
580 - Signaling NaN macros: SNANF, SNAN, SNANL.
582 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
583 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
584 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
586 - llogb functions: the llogb, llogbf and llogbl functions, and the
587 FP_LLOGB0 and FP_LLOGBNAN macros.
589 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
592 - Comparison macros: iseqsig.
594 - Classification macros: iscanonical, issubnormal, iszero.
596 - Total order functions: totalorder, totalorderf, totalorderl,
597 totalordermag, totalordermagf, totalordermagl.
599 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
601 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
602 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
604 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
605 are added to libc. They convert a floating-point number into string.
607 * Most of glibc can now be built with the stack smashing protector enabled.
608 It is recommended to build glibc with --enable-stack-protector=strong.
609 Implemented by Nick Alcock (Oracle).
611 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
612 intended to be used instead of memset() to erase sensitive data after use;
613 the compiler will not optimize out calls to explicit_bzero even if they
614 are "unnecessary" (in the sense that no _correct_ program can observe the
615 effects of the memory clear).
617 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
618 to float instead of double. This does not affect the ABI of any libraries
619 that are part of the GNU C Library, but may affect the ABI of other
620 libraries that use this type in their interfaces.
622 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
623 float_t and double_t types are now defined to long double instead of float
624 and double. These options are not the default, and this does not affect
625 the ABI of any libraries that are part of the GNU C Library, but it may
626 affect the ABI of other libraries that use this type in their interfaces,
627 if they are compiled or used with those options.
629 * The getentropy and getrandom functions, and the <sys/random.h> header file
632 * The buffer size for byte-oriented stdio streams is now limited to 8192
633 bytes by default. Previously, on Linux, the default buffer size on most
634 file systems was 4096 bytes (and thus remains unchanged), except on
635 network file systems, where the buffer size was unpredictable and could be
636 as large as several megabytes.
638 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
639 for the Linux quota interface which predates kernel version 2.4.22 has
642 * The malloc_get_state and malloc_set_state functions have been removed.
643 Already-existing binaries that dynamically link to these functions will
644 get a hidden implementation in which malloc_get_state is a stub. As far
645 as we know, these functions are used only by GNU Emacs and this change
646 will not adversely affect already-built Emacs executables. Any undumped
647 Emacs executables, which normally exist only during an Emacs build, should
648 be rebuilt by re-running “./configure; make” in the Emacs build tree.
650 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
651 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
652 “no-ip6-dotint” had already been the default, and support for the
653 “ip6-dotint” option was removed from the Internet in 2006.
655 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
656 flag from <resolv.h> have been removed. The option relied on a
657 backwards-incompatible DNS extension which was never deployed on the
660 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
661 RES_BLAST defined in the <resolv.h> header file have been deprecated.
662 They were already unimplemented.
664 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
665 _res.flags are deprecated. The flag was standardized in RFC 2133, but
666 removed again from the IETF name lookup interface specification in RFC
667 2553. Applications should use getaddrinfo instead.
669 * DNSSEC-related declarations and definitions have been removed from the
670 <arpa/nameser.h> header file, and libresolv will no longer attempt to
671 decode the data part of DNSSEC record types. Previous versions of glibc
672 only implemented minimal support for the previous version of DNSSEC, which
673 is incompatible with the currently deployed version.
675 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
676 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
677 <arpa/nameser.h> header file because the distinction between RR types and
678 meta-RR types is not officially standardized, subject to revision, and
679 thus not suitable for encoding in a macro.
681 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
682 and rhook members of the res_state type in <resolv.h> have been removed.
683 The glibc stub resolver did not support these hooks, but the header file
684 did not reflect that.
686 * For multi-arch support it is recommended to use a GCC which has
687 been built with support for GNU indirect functions. This ensures
688 that correct debugging information is generated for functions
689 selected by IFUNC resolvers. This support can either be enabled by
690 configuring GCC with '--enable-gnu-indirect-function', or by
691 enabling it by default by setting 'default_gnu_indirect_function'
692 variable for a particular architecture in the GCC source file
695 * GDB pretty printers have been added for mutex and condition variable
696 structures in POSIX Threads. When installed and loaded in gdb these pretty
697 printers show various pthread variables in human-readable form when read
698 using the 'print' or 'display' commands in gdb.
700 * Tunables feature added to allow tweaking of the runtime for an application
701 program. This feature can be enabled with the '--enable-tunables' configure
702 flag. The GNU C Library manual has details on usage and README.tunables has
703 instructions on adding new tunables to the library.
705 * A new version of condition variables functions have been implemented in
706 the NPTL implementation of POSIX Threads to provide stronger ordering
709 * A new version of pthread_rwlock functions have been implemented to use a more
710 scalable algorithm primarily through not using a critical section anymore to
713 Security related changes:
715 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
716 have been created with makecontext could fail to terminate due to a
717 missing .cantunwind annotation. This has been observed to lead to a hang
718 (denial of service) in some Go applications compiled with gccgo. Reported
719 by Andreas Schwab. (CVE-2016-6323)
721 * The DNS stub resolver functions would crash due to a NULL pointer
722 dereference when processing a query with a valid DNS question type which
723 was used internally in the implementation. The stub resolver now uses a
724 question type which is outside the range of valid question type values.
727 The following bugs are resolved with this release:
729 [4099] stdio: Overly agressive caching by stream i/o functions.
730 [7065] build: Support building glibc with -fstack-protector or -fstack-
732 [9842] localedata: en_CA: incorrect date format
733 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
734 before it started waiting
735 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
736 [15765] nptl: sem_open is wrongly a cancellation point
737 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
738 [16458] libc: endian.h and netinet/in.h byte order macros return values of
740 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
741 library linked with pthread
742 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
744 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
745 [17252] libc: getrandom and getentropy syscall
746 [17730] malloc: thread-local storage is sometimes improperly free()'d
747 after being __libc_memalign()'d
748 [18241] stdio: failed fseek on memstream does not set errno and can fail
750 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
752 [18463] nptl: pthread_cond_broadcast issue when surrounded by
753 PTHREAD_PRIO_INHERIT mutex on ARM
754 [18784] network: res_query and related function crash for special record
755 type queries (CVE-2015-5180)
756 [19380] math: strtod does not raise "inexact"
757 [19387] string: Integer overflow in memchr
758 [19390] string: Integer overflow in strncat
759 [19398] build: linknamespace tests fail with massively parallel build
760 [19402] nptl: Deadlock with robust shared mutex and asynchronous
762 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
763 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
764 [19514] libc: [PATCH] Fix spelling errors in spelling
765 "implement"/"implementation" in several places
766 [19582] network: Deprecate RES_USE_INET6
767 [19673] manual: clog10 docs appear to be erroneous
768 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
769 causes a segmentation fault
770 [19826] libc: invalid pointer returned from __tls_get_addr with static
772 [20016] network: resolv: Remove hooks support from the API
773 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
775 [20033] math: [x86_64] vectorized math function don't call the __finite
777 [20116] nptl: use after free in pthread_create
778 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
779 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
781 [20311] nptl: please install proc_service.h
782 [20366] libc: Compilation errors in installed headers in strict-compliance
784 [20370] malloc: malloc: Arena free list management is still racy
785 (incorrect fix in bug 19243)
786 [20386] libc: assert (X = 0) does not result in GCC warning
787 [20432] malloc: malloc: Minimize interface required for interposition
788 [20435] libc: Missing unwind info in __startcontext causes infinite loop
789 in _Unwind_Backtrace (CVE-2016-6323)
790 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
791 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
793 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
794 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
795 [20477] network: resolv: incorrect double-checked locking related to
797 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
799 [20495] math: x86_64 performance degradation due to AVX/SSE transition
801 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
802 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
803 cause transition penalty
804 [20517] math: sparcv9 missing fdiml compat symbol
805 [20524] manual: strverscmp is inconsistent
806 [20525] libc: <sys/quota.h> should be based on kernel headers
807 [20539] math: GCC 7 -static -lm fails to link at -O3
808 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
810 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
812 [20591] network: Remove obsolete DNSSEC support
813 [20592] network: DNS resource record type classification macros in
814 <arpa/nameser.h> are incorrect
815 [20593] network: Update DNS RR type definitions
816 [20611] network: getaddrinfo accepts invalid numeric scope IDs
817 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
819 [20629] network: libresolv: Remove support for bitstring labels
821 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
822 assertion: "maxidx >= 2"
823 [20660] math: [arm] Use VSQRT
824 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
825 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
826 [20689] libc: Test for FMA should also check for AVX.
827 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
828 [20715] math: iszero macro breaks existing code
829 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
830 [20728] libc: powerpc: Missing TOC stub in clone
831 [20729] build: glibc-2.24 fails to build for i486 with -Os
832 [20750] build: Build fails with default PIE enabled gcc-6.x
833 [20768] math: [alpha] sqrt fegetenv namespace
834 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
836 [20787] math: float_t is defined as float incorrectly on x86_64 even if
837 __FLT_EVAL_METHOD__ is 2
838 [20790] network: rpcgen buffer overrun in get_prog_declaration
839 [20822] nptl: race condition in __lll_unlock_elision on powerpc
840 [20829] libc: crypt snprintf namespace
841 [20847] libc: tst-vfork3 failure
842 [20855] math: Default bits/mathdef.h has inappropriate float_t
843 [20859] math: [sh4] FP_ILOGB0 invalid
844 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
845 U+20AC), not same as GBK
846 [20915] dynamic-link: global-dynamic TLS broken on aarch64
847 [20916] math: pow handling of sNaN arguments
848 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
849 [20919] math: Bad pow (qNaN, 0) result with -lieee
850 [20940] math: hypot sNaN handling
851 [20947] math: fmax, fmin sNaN handling
852 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
853 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
855 [20971] string: powerpc64/power7 memchr overflows internal pointer check
856 [20973] nptl: robust mutexes: Lost wake-ups
857 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
858 [20978] nis: strlen on null pointer in nss_nisplus
859 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
861 [21014] string: i686 memchr overflows internal pointer check
862 [21019] libc: [mips] n32 lseek incorrect on overflow
863 [21022] libc: [microblaze] __backtrace get_frame_size namespace
864 [21026] libc: [MIPS] readahead syscall is broken on n64
865 [21028] math: Fallback fesetexceptflag should always succeed
866 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
867 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
869 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
870 [21061] librt: [microblaze] librt lost clock_* exports
871 [21073] libc: tunables: insecure environment variables passed to
872 subprocesses with AT_SECURE
873 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
877 * The minimum Linux kernel version that this version of the GNU C Library
878 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
879 kernel version 2.6.32 or later suffices (on architectures that already
880 required kernel versions more recent than 3.2, those requirements remain
881 unchanged). Linux 3.2 or later kernel headers are required on all
884 * The pap_AN locale has been deleted. This has been deprecated for a long
885 time. It has been replaced by pap_AW & pap_CW, both of which have long
886 been included in previous releases.
888 * The readdir_r and readdir64_r functions have been deprecated. It is
889 recommended to use readdir and readdir64 instead.
891 * The type “union wait” has been removed. It was deprecated in the early
892 1990s and never part of POSIX. Application code should use the int type
893 instead of “union wait”.
895 * A new NSS action is added to facilitate large distributed system
896 administration. The action, MERGE, allows remote user stores like LDAP
897 to be merged into local user stores like /etc/groups in order to provide
898 easy to use, updated, and managed sets of merged credentials. The new
899 action can be used by configuring it in /etc/nsswitch.conf:
900 group: files [SUCCESS=merge] nis
901 Implemented by Stephen Gallagher (Red Hat).
903 * The deprecated __malloc_initialize_hook variable has been removed from the
906 * The long unused localedef --old-style option has been removed. It hasn't
907 done anything in over 16 years. Scripts using this option can safely
910 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
911 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
912 return the next representable value in the direction of positive infinity
913 and the nextdown functions return the next representable value in the
914 direction of negative infinity. These are currently enabled as GNU
917 Security related changes:
919 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
920 could result in a stack overflow when getnetbyname was called with an
921 overly long name. (CVE-2016-3075)
923 * Previously, getaddrinfo copied large amounts of address data to the stack,
924 even after the fix for CVE-2013-4458 has been applied, potentially
925 resulting in a stack overflow. getaddrinfo now uses a heap allocation
926 instead. Reported by Michael Petlan. (CVE-2016-3706)
928 * The glob function suffered from a stack-based buffer overflow when it was
929 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
930 Reported by Alexander Cherepanov. (CVE-2016-1234)
932 * The Sun RPC UDP client could exhaust all available stack space when
933 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
934 alloca plugin for GCC. (CVE-2016-4429)
936 * The IPv6 name server management code in libresolv could result in a memory
937 leak for each thread which is created, performs a failing naming lookup,
938 and exits. Over time, this could result in a denial of service due to
939 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
941 The following bugs are resolved with this release:
943 [1170] localedata: ne_NP: update Nepali locale definition file
944 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
946 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
947 [6796] math: fdim() does not set errno on overflow
948 [10354] libc: posix_spawn should use vfork() in more cases than presently
949 [11213] localedata: localedata: add copyright disclaimer to locale files
950 [12143] localedata: chr_US: new Cherokee locale
951 [12450] localedata: sgs_LT: new locale
952 [12676] localedata: ln_CD: new locale
953 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
955 [13304] math: fma, fmaf, fmal produce wrong results
956 [14259] build: --localedir arg to configure is ignored
957 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
958 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
959 [14934] localedata: es_CL: wrong first weekday chilean locale
960 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
962 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
964 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
965 [15368] nptl: raise() is not async-signal-safe
966 [15479] math: ceil, floor, round and trunc raise inexact exception
967 [15578] localedata: kk_KZ: various updates
968 [16003] localedata: pap_AN: punt old locale
969 [16137] localedata: iw_IL: punt old locale
970 [16190] localedata: eo: new esperanto locale
971 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
972 [16742] malloc: race condition: pthread_atfork() called before first
973 malloc() results in unexpected locking behaviour/deadlocks
974 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
976 [16983] localedata: postal_fmt does not allow %l and %n modifiers
977 [17565] localedata: pt_PT: wrong (work-)week start
978 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
979 [17950] build: Build fails with -msse
980 [18205] localedata: be_BY*: wrong first_weekday and first_workday
981 [18433] libc: posix_spawn does not return correctly upon failure to
983 [18453] localedata: charmaps/IBM875: incorrect codes
984 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
986 [18896] localedata: he_IL: improvements for currency
987 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
989 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
991 [19056] libc: Deprecate readdir_r
992 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
994 [19198] localedata: nl_NL: small improvements for Dutch locales
995 [19257] network: Per-thread memory leak in __res_vinit with IPv6
996 nameservers (CVE-2016-5417)
997 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
999 [19400] locale: Language missing in "iso-639.def", trivial fix in
1001 [19431] malloc: Deadlock between fflush, getdelim, and fork
1002 [19505] libc: Incorrect file descriptor validity checks in
1003 posix_spawn_file_actions_add{open,close,dup2}
1004 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
1005 when using RTLD_NEXT
1006 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
1007 `intl/{gettextP,loadinfo}.h'
1008 [19534] libc: execle, execlp may use malloc
1009 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
1010 [19573] network: res_nclose and __res_maybe_init disagree about name
1011 server initialization, breaking Hesiod
1012 [19575] localedata: Status of GB18030 tables
1013 [19581] localedata: sr_* date_fmt string contains additional newline
1014 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
1016 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
1017 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
1018 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
1019 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
1021 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
1023 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
1025 [19610] dynamic-link: ldconfig -X removes stale symbolic links
1026 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
1027 [19633] locale: strfmon_l applies global locale to number formatting
1028 [19642] network: Memory leak in getnameinfo
1029 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
1030 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
1032 [19654] math: [x86_64] Need testcase for BZ #19590 fix
1033 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
1035 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
1036 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
1038 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
1040 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
1042 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
1043 pointers and lengths in error-case.
1044 [19727] locale: Converting from/to UTF-xx with iconv() does not always
1045 report errors on UTF-16 surrogates values.
1046 [19755] nscd: nscd assertion failure in gc
1047 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
1048 [19759] libc: mempcpy shouldn't be inlined
1049 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
1050 [19765] libc: s390 needs an optimized mempcpy
1051 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
1052 NAME_MAX limit assumption (CVE-2016-1234)
1053 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
1054 [19787] network: Missing and incorrect truncation checks in getnameinfo
1055 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
1057 [19791] network: Assertion failure in res_query.c with un-connectable name
1059 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
1060 [19822] math: libm.so install clobbers old version
1061 [19825] network: resolv: send_vc can return uninitialized data in second
1062 response to getaddrinfo
1063 [19830] network: nss_dns: should check RDATA length against buffer length
1064 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
1065 confronted with A/AAAA records of invalid size
1066 [19837] nss: nss_db: No retries for some long lines with a larger buffer
1067 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
1068 [19853] stdio: Printing IBM long double in decimal with high precision is
1070 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
1071 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
1072 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
1074 [19865] network: Assertion failure or memory leak in
1075 _nss_dns_getcanonname_r
1076 [19868] network: nss_dns: netent code does not skip over non-PTR records
1077 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
1079 [19881] string: Improve x86-64 memset
1080 [19907] string: Incorrect memcpy tests
1081 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
1083 [19925] libc: termios.h XCASE namespace
1084 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
1085 [19929] libc: limits.h NL_NMAX namespace
1086 [19931] stdio: Memory leak in vfprintf
1087 [19957] libc: clone(CLONE_VM) access invalid parent memory
1088 [19963] localedata: en_IL: New locale
1089 [19989] stdio: stdio.h cuserid namespace
1090 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
1092 [19996] locale: langinfo.h nl_langinfo_l namespace
1093 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
1094 [20010] network: getaddrinfo: Stack overflow in hostent translation
1096 [20012] stdio: libio: fmemopen append mode failure
1097 [20014] stdio: stdio.h namespace for pre-threads POSIX
1098 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
1099 [20023] libc: fcntl.h timespec namespace
1100 [20024] math: [x86_64] vectorized sincos trashes the stack
1101 [20031] network: nss_hesiod: Heap overflow in get_txt_records
1102 [20041] time: sys/time.h timespec namespace
1103 [20043] libc: unistd.h missing cuserid for UNIX98 and before
1104 [20044] libc: unistd.h missing pthread_atfork for UNIX98
1105 [20051] libc: ttyslot in wrong header under wrong conditions
1106 [20054] libc: gethostname not declared for XPG4
1107 [20055] libc: termios.h missing tcgetsid for XPG4
1108 [20072] dynamic-link: x86 init_cpu_features is called twice in static
1110 [20073] libc: sys/stat.h fchmod namespace
1111 [20074] libc: stdlib.h rand_r namespace
1112 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
1113 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
1115 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
1116 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
1118 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
1119 [20119] libc: Wrong mask for processors level type from CPUID
1120 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
1121 AS not supporting AVX512
1122 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
1124 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
1125 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
1127 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
1128 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
1129 [20178] libc: posix_spawn{p} should not call exit
1130 [20191] stdio: libio: vtables hardening
1131 [20195] string: FMA4 detection requires CPUID execution with register
1133 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
1134 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
1136 [20212] math: acos (sNaN) returns sNaN
1137 [20213] math: asin (sNaN) returns sNaN
1138 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
1139 [20218] math: [i386] asinhl (sNaN) returns sNaN
1140 [20219] math: [i386] atanhl (sNaN) returns sNaN
1141 [20222] stdio: fopencookie: Mangle function pointers
1142 [20224] math: [i386] cbrtl (sNaN) returns sNaN
1143 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
1144 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
1146 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
1147 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
1148 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
1149 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
1150 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
1151 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
1152 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
1153 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
1154 [20240] math: modf (sNaN) returns sNaN
1155 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
1156 [20250] math: frexp (sNaN) returns sNaN
1157 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
1158 [20255] math: [i386] fdim, fdimf return with excess range and precision /
1160 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
1161 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
1162 subscript is below array bounds [-Werror=array-bounds]
1163 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
1164 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
1166 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
1167 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
1169 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
1170 "invalid" exceptions
1171 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
1172 [20316] localedata: id_ID: Februari instead of Pebruari
1173 [20327] string: POWER8 strcasecmp returns incorrect result
1174 [20347] math: Failure: Test: j0_downward (0xap+0)
1175 [20348] libc: FAIL: misc/tst-preadvwritev64
1176 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
1177 [20350] libc: There is no test for p{read,write}64
1178 [20357] math: Incorrect cos result for 1.5174239687223976
1179 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
1183 * Unicode 8.0.0 Support: Character encoding, character type info, and
1184 transliteration tables are all updated to Unicode 8.0.0, using new
1185 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
1186 These updates cause user visible changes, such as the fixes for bugs
1187 89, 16061, and 18568.
1189 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
1190 kernel-internal CPU set size. This means that requests that change the
1191 CPU affinity which failed before (for example, an all-ones CPU mask) will
1192 now succeed. Applications that need to determine the effective CPU
1193 affinities need to call sched_getaffinity or pthread_getaffinity_np after
1194 setting it because the kernel can adjust it (and the previous size check
1195 would not detect this in the majority of cases).
1197 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
1198 the following new symbols are used: fts64_children, fts64_close,
1199 fts64_open, fts64_read and fts64_set.
1201 * getaddrinfo now detects certain invalid responses on an internal netlink
1202 socket. If such responses are received, an affected process will
1203 terminate with an error message of "Unexpected error <number> on netlink
1204 descriptor <number>" or "Unexpected netlink response of size <number> on
1205 descriptor <number>". The most likely cause for these errors is a
1206 multi-threaded application which erroneously closes and reuses the netlink
1207 file descriptor while it is used by getaddrinfo.
1209 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
1210 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
1211 unnecessary serialization of memory allocation requests across threads.
1212 The defect is now corrected. Users should see a substantial increase in
1213 the concurent throughput of allocation requests for applications which
1214 trigger this bug. Affected applications typically create and
1215 destroy threads frequently. (Bug 19048 was reported and analyzed by
1218 * There is now a --disable-timezone-tools configure option for disabling the
1219 building and installing of the timezone related utilities (zic, zdump, and
1220 tzselect). This is useful for people who build the timezone data and code
1221 independent of the GNU C Library.
1223 * The obsolete header <regexp.h> has been removed. Programs that require
1224 this header must be updated to use <regex.h> instead.
1226 * The obsolete functions bdflush, create_module, get_kernel_syms,
1227 query_module and uselib are no longer available to newly linked binaries;
1228 the header <sys/kdaemon.h> has been removed. These functions and header
1229 were specific to systems using the Linux kernel and could not usefully be
1230 used with the GNU C Library on systems with version 2.6 or later of the
1233 * Optimized string, wcsmbs and memory functions for IBM z13.
1234 Implemented by Stefan Liebler.
1236 * Newly linked programs that define a variable called signgam will no longer
1237 have it set by the lgamma, lgammaf and lgammal functions. Programs that
1238 require signgam to be set by those functions must ensure that they use the
1239 variable provided by the GNU C Library and declared in <math.h>, without
1240 defining their own copy.
1242 * The minimum GCC version that can be used to build this version of the GNU
1243 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
1244 still be used to compile programs using the GNU C Library.
1246 Security related changes:
1248 * An out-of-bounds value in a broken-out struct tm argument to strftime no
1249 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
1251 * The LD_POINTER_GUARD environment variable can no longer be used to disable
1252 the pointer guard feature. It is always enabled. Previously,
1253 LD_POINTER_GUARD could be used to disable security hardening in binaries
1254 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
1257 * An integer overflow in hcreate and hcreate_r could lead to an
1258 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
1260 * The catopen function no longer has unbounded stack usage. Reported by
1261 Max. (CVE-2015-8779)
1263 * The nan, nanf and nanl functions no longer have unbounded stack usage
1264 depending on the length of the string passed as an argument to the
1265 functions. Reported by Joseph Myers. (CVE-2014-9761)
1267 * A stack-based buffer overflow was found in libresolv when invoked from
1268 libnss_dns, allowing specially crafted DNS responses to seize control
1269 of execution flow in the DNS client. The buffer overflow occurs in
1270 the functions send_dg (send datagram) and send_vc (send TCP) for the
1271 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
1272 family. The use of AF_UNSPEC triggers the low-level resolver code to
1273 send out two parallel queries for A and AAAA. A mismanagement of the
1274 buffers used for those queries could result in the response of a query
1275 writing beyond the alloca allocated buffer created by
1276 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
1277 the overflow. Thanks to the Google Security Team and Red Hat for
1278 reporting the security impact of this issue, and Robert Holiday of
1279 Ciena for reporting the related bug 18665. (CVE-2015-7547)
1281 The following bugs are resolved with this release:
1283 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
1284 [887] math: Math library function "logb" and "nextafter" inconsistent
1285 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
1286 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
1287 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
1288 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
1290 [4404] localedata: German translation of "Alarm clock" is misleading
1291 [6799] math: nextafter() and nexttoward() doen't set errno on
1292 overflow/underflow errors
1293 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
1295 [10432] nis: _nss_nis_setnetgrent assertion failure
1296 [11460] libc: fts has no LFS support
1297 [12926] network: getaddrinfo()/make_request() may spin forever
1298 [13065] nptl: Race condition in pthread barriers
1299 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
1300 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
1302 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
1303 [14912] libc: Rename non-installed bits/*.h headers
1304 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
1305 [15367] math: Let gcc use __builtin_isinf
1306 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
1307 [15421] math: lgamma wrongly sets signgam for ISO C
1308 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
1309 FE_INVALID with argument out of range
1310 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
1312 [15786] dynamic-link: ifunc resolver functions can smash function
1314 [15918] math: Unnecessary check for equality in hypotf()
1315 [16061] localedata: Review / update transliteration data
1316 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
1318 [16141] time: strptime %z offset restriction
1319 [16171] math: drem should be alias of remainder
1320 [16296] math: fegetround is pure?
1321 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
1322 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
1324 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
1325 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
1327 [16422] math: [powerpc] math-float, math-double failing llrint tests with
1328 "Exception "Inexact" set" on ppc32
1329 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
1330 [16517] math: Missing underflow exception from tanf/tan/tanl
1331 [16519] math: Missing underflow exception from sinhf
1332 [16520] math: Missing underflow exception from tanhf
1333 [16521] math: Missing underflow exception from exp2
1334 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
1336 [16734] stdio: fopen calls mmap to allocate its buffer
1337 [16961] math: nan function incorrect handling of bad sequences
1338 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
1339 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
1340 [16985] locale: localedef: confusing error message when opening output
1342 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
1343 [17197] locale: Redundant shift character in iconv conversion output at
1345 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
1346 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
1347 [17250] dynamic-link: static linking breaks nss loading
1348 (getaddrinfo/getpwnam/etc...)
1349 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
1351 [17441] math: isnan() should use __builtin_isnan() in GCC
1352 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
1353 (related to lock elision)
1354 [17787] manual: Exponent on page 324 of the PDF ends prematurely
1355 [17886] time: strptime should be able to parse "Z" as a timezone with %z
1356 [17887] time: strptime should be able to parse "+01:00" style timezones
1357 [17905] libc: catopen() Multiple unbounded stack allocations
1359 [18084] libc: backtrace (..., 0) dumps core on x86
1360 [18086] libc: nice() sets errno to 0 on success
1361 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
1362 is too large (CVE-2015-8778)
1363 [18251] dynamic-link: SONAME missing when audit modules provides path
1364 [18265] libc: add attributes for wchar string and memory functions
1365 [18370] math: csqrt missing underflows
1366 [18421] libc: [hppa] read-only segment has dynamic relocations
1367 [18472] libc: Obsolete syscall wrappers should be compat symbols
1368 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
1369 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
1370 [18525] localedata: Remove locale timezone information
1371 [18560] libc: [powerpc] spurious bits/ipc.h definitions
1372 [18568] localedata: Update locale data to Unicode 8.0
1373 [18589] locale: sort-test.sh fails at random
1374 [18595] math: ctan, ctanh missing underflows
1375 [18604] libc: assert macro-expands its argument
1376 [18610] math: S390: fetestexcept() reports any exception if DXC-code
1377 contains a vector instruction exception.
1378 [18611] math: j1, jn missing errno setting on underflow
1379 [18618] localedata: sync Chechen locale definitions with other *_RU
1381 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
1382 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
1383 [18665] network: In send_dg, the recvfrom function is NOT always using the
1384 buffer size of a newly created buffer (CVE-2015-7547)
1385 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
1387 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
1389 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
1390 [18699] math: tilegx cproj() for various complex infinities does not yield
1392 [18724] libc: Harden put*ent functions against data injection
1393 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
1394 [18755] build: build errors with -DNDEBUG
1395 [18757] stdio: fmemopen fails to set errno on failure
1396 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
1398 [18781] libc: openat64 lacks O_LARGEFILE
1399 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
1400 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
1401 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
1402 [18790] math: [ldbl-128ibm] tanhl inaccurate
1403 [18795] libc: stpncpy fortification misses buffer lengths that are
1404 statically too large
1405 [18796] build: build fails for --disable-mathvec
1406 [18803] math: hypot missing underflows
1407 [18820] stdio: fmemopen may leak memory on failure
1408 [18823] math: csqrt spurious underflows
1409 [18824] math: fma spurious underflows
1410 [18825] math: pow missing underflows
1411 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
1412 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
1413 [18870] build: sem_open.c fails to compile with missing symbol
1415 [18872] stdio: Fix memory leak in printf_positional
1416 [18873] libc: posix_fallocate overflow check ineffective
1417 [18875] math: Excess precision leads incorrect libm
1418 [18877] libc: arm: mmap offset regression
1419 [18887] libc: memory corruption when using getmntent on blank lines
1420 [18918] localedata: hu_HU: change time to HH:MM:SS format
1421 [18921] libc: Regression: extraneous stat() and fstat() performed by
1423 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
1424 binaries (CVE-2015-8777)
1425 [18951] math: tgamma missing underflows
1426 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
1428 [18953] localedata: lt_LT: change currency symbol to the euro
1429 [18956] math: powf inaccuracy
1430 [18961] math: [i386] exp missing underflows
1431 [18966] math: [i386] exp10 missing underflows
1432 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
1433 [18969] build: multiple string test failures due to missing locale
1435 [18970] libc: Reference of pthread_setcancelstate in libc.a
1436 [18977] math: float / long double Bessel functions not in XSI POSIX
1437 [18980] math: i386 libm functions return with excess range and precision
1438 [18981] math: i386 scalb*, ldexp return with excess range and precision
1439 [18982] stdio: va_list and vprintf
1440 [18985] time: Passing out of range data to strftime() causes a segfault
1442 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
1443 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
1444 [19012] locale: iconv_open leaks memory on error path
1445 [19016] math: clog, clog10 inaccuracy
1446 [19018] nptl: Mangle function pointers in tls_dtor_list
1447 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
1448 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
1449 [19048] malloc: malloc: arena free list can become cyclic, increasing
1451 [19049] math: [powerpc] erfc incorrect zero sign
1452 [19050] math: [powerpc] log* incorrect zero sign
1453 [19058] math: [x86_64] Link fail with -fopenmp and -flto
1454 [19059] math: nexttoward overflow incorrect in non-default rounding modes
1455 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
1456 [19074] network: Data race in _res_hconf_reorder_addrs
1457 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
1458 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
1459 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
1461 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
1463 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
1464 [19086] manual: posix_fallocate64 documented argument order is wrong.
1465 [19088] math: lround, llround missing exceptions close to overflow
1467 [19094] math: lrint, llrint missing exceptions close to overflow threshold
1468 [19095] math: dbl-64 lrint incorrect for 64-bit long
1469 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
1470 [19124] dynamic-link: ld.so failed to build with older assmebler
1471 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
1472 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
1473 [19134] math: [powerpc32] lround, lroundf spurious exceptions
1474 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
1475 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
1476 pthread_setaffinity_np
1477 [19156] math: [ldbl-128] j0l spurious underflows
1478 [19164] nptl: tst-getcpu fails with many possible CPUs
1479 [19168] math: math/test-ildoubl and math/test-ldouble failure
1480 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
1481 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
1483 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
1484 (FE_NOMASK_ENV) do not clear SSE exceptions
1485 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
1486 _int_new_arena/reused_arena
1487 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
1488 [19201] math: dbl-64 remainder incorrect sign of zero result
1489 [19205] math: bits/math-finite.h conditions do not match math.h and
1491 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
1492 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
1493 for C99-based standards
1494 [19212] libc: features.h not -Wundef clean
1495 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
1497 [19214] libc: Family and model identification for AMD CPU's are incorrect.
1498 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
1499 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
1501 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
1502 "inexact" exceptions
1503 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
1505 [19242] libc: strtol incorrect in Turkish locales
1506 [19243] malloc: reused_arena can pick an arena on the free list, leading
1507 to an assertion failure and reference count corruption
1508 [19253] time: tzset() ineffective when temporary TZ did not include DST
1510 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
1511 [19270] math: [hppa] Shared libm missing __isnanl
1512 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
1513 MAP_HUGETLB and MAP_STACK defines
1514 [19313] nptl: Wrong __cpu_mask for x32
1515 [19347] libc: grantpt: try to force a specific gid even without pt_chown
1516 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
1517 [19350] math: [ldbl-128ibm] sinhl spurious overflows
1518 [19351] math: [ldbl-128ibm] logl inaccurate near 1
1519 [19363] time: x32: times() return value wrongly truncates/sign extends
1521 [19367] dynamic-link: Improve branch prediction on Silvermont
1522 [19369] network: Default domain name not reset by res_ninit when "search"
1523 / "domain" entry is removed from resolv.conf
1524 [19375] math: powerpc: incorrect results for POWER7 logb with negative
1526 [19385] localedata: bg_BG: time separator should be colon, not comma
1527 [19408] libc: linux personality syscall wrapper may erroneously return an
1528 error on 32-bit architectures
1529 [19415] libc: dladdr returns wrong names on hppa
1530 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
1531 IBM905, IBM907, and IBM909
1532 [19439] math: Unix98 isinf and isnan functions conflict with C++11
1533 [19443] build: build failures with -DDEBUG
1534 [19451] build: Make check fails on test-double-vlen2
1535 [19462] libc: Glibc failed to build with -Os
1536 [19465] math: Wrong code with -Os
1537 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
1539 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
1541 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
1542 [19486] math: S390: Math tests fail with "Exception Inexact set".
1543 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
1544 [19550] libc: [mips] mmap negative offset handling inconsistent with other
1546 [19590] math: Fail to build shared objects that use libmvec.so functions.
1550 * The following bugs are resolved with this release:
1552 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
1553 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
1554 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
1555 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
1556 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
1557 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
1558 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
1559 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
1560 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
1561 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
1562 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
1563 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
1564 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
1565 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
1566 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
1567 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
1568 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
1569 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
1570 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
1571 18657, 18676, 18694, 18696, 18887.
1573 * Cache information can be queried via sysconf() function on s390 e.g. with
1574 _SC_LEVEL1_ICACHE_SIZE as argument.
1576 * A buffer overflow in gethostbyname_r and related functions performing DNS
1577 requests has been fixed. If the NSS functions were called with a
1578 misaligned buffer, the buffer length change due to pointer alignment was
1579 not taken into account. This could result in application crashes or,
1580 potentially arbitrary code execution, using crafted, but syntactically
1581 valid DNS responses. (CVE-2015-1781)
1583 * The time zone file parser has been made more robust against crafted time
1584 zone files, avoiding heap buffer overflows related to the processing of
1585 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
1586 large time zone data files. Overly long time zone specifiers in the TZ
1587 variable no longer result in stack overflows and crashes.
1589 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
1590 for LD and GD on x86 and x86-64, has been implemented. You will need
1591 binutils-2.24 or later to enable this optimization.
1593 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
1594 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
1595 Hat). These updates cause user visible changes, such as the fix for bug
1598 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
1599 and getXXbyYY NSS calls for the same database, causing a denial-of-service
1600 condition in some applications.
1602 * Added vector math library named libmvec with the following vectorized x86_64
1603 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
1605 The library can be disabled with --disable-mathvec. Use of the functions is
1606 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
1607 Shared library libmvec.so is linked in as needed when using -lm (no need to
1608 specify -lmvec explicitly for not static builds).
1609 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
1611 * A new fmemopen implementation has been added with the goal of POSIX
1612 compliance. The new implementation fixes the following long-standing
1613 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
1614 old implementation is still present for use be by existing binaries.
1616 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
1617 releases. It has been fixed to match 2.19 and older, but binaries built
1618 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
1620 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
1621 Contributed by Roland McGrath (Google).
1623 * The header <regexp.h> is deprecated, and will be removed in a future
1624 release. Use of this header will trigger a deprecation warning.
1625 Application developers should update their code to use <regex.h> instead.
1627 This header was formerly part of SUS, but was deprecated in 1994 and
1628 removed from the standard in 2001. Also, the glibc implementation
1629 leaks memory. See BZ#18681 for more details.
1633 * The following bugs are resolved with this release:
1635 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
1636 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
1637 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
1638 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
1639 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
1640 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
1641 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
1642 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
1643 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
1644 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
1647 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
1648 too little memory for the to-be-scanned arguments and overflow the
1649 allocated buffer. The implementation now correctly computes the required
1650 buffer size when using malloc, and switches to malloc from alloca as
1653 * A new semaphore algorithm has been implemented in generic C code for all
1654 machines. Previous custom assembly implementations of semaphore were
1655 difficult to reason about or ensure that they were safe. The new version
1656 of semaphore supports machines with 64-bit or 32-bit atomic operations.
1657 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
1658 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
1660 * Port to Altera Nios II has been contributed by Mentor Graphics.
1662 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
1663 implementations for powerpc64/powerpc64le.
1664 Implemented by Adhemerval Zanella (IBM).
1666 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
1667 and powerpc64le. This may improve lock scaling of existing programs on
1668 HTM capable systems. The lock elision code is only enabled with
1669 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
1670 powerpc will issue a transaction abort on every syscall to avoid side
1671 effects being visible outside transactions.
1673 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
1674 AArch64. Contributed by ARM Ltd.
1676 * i386 memcpy functions optimized with SSE2 unaligned load/store.
1678 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
1679 under certain input conditions resulting in the execution of a shell for
1680 command substitution when the application did not request it. The
1681 implementation now checks WRDE_NOCMD immediately before executing the
1682 shell and returns the error WRDE_CMDSUB as expected.
1684 * CVE-2012-3406 printf-style functions could run into a stack overflow when
1685 processing format strings with a large number of format specifiers.
1687 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
1688 infinite loop if the DNS response contained a PTR record of an unexpected
1691 * The minimum GCC version that can be used to build this version of the GNU
1692 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
1693 still be used to compile programs using the GNU C Library.
1695 * The GNU C Library is now built with -Werror by default. This can be
1696 disabled by configuring with --disable-werror.
1698 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
1700 * The obsolete sigvec function has been removed. This was the original
1701 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
1702 programs have been using instead for about 25 years. Of course, ABI
1703 compatibility for old binaries using sigvec remains intact.
1705 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
1706 with newer versions of bison.
1708 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
1709 The original MIPS o32 hard-float ABI requires an FPU where double-precision
1710 registers overlay two consecutive single-precision registers. MIPS32R2
1711 introduced a new FPU mode (FR=1) where double-precision registers extend the
1712 corresponding single-precision registers which is incompatible with the
1713 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
1714 require the use of FR=1 making a transition necessary. New o32 ABI
1715 extensions enable users to migrate over time from the original o32 ABI
1716 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
1717 tracks the ABI of any loaded object and verifies that new objects are
1718 compatible. Mode transitions will also be requested as required and
1719 unsupportable objects will be rejected. The ABI checks include both soft and
1720 hard float ABIs for o32, n32 and n64.
1722 GCC 5 with GNU binutils 2.25 onwards:
1723 It is strongly recommended that all o32 system libraries are built using the
1724 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
1725 with the original and all new o32 ABI extensions. Configure a MIPS GCC
1726 compiler using --with-fp-32=xx to set this by default.
1730 * The following bugs are resolved with this release:
1732 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
1733 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
1734 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
1735 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
1736 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
1737 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
1738 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
1739 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
1740 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
1741 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
1742 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
1743 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
1744 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
1745 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
1746 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
1748 * Reverted change of ABI data structures for s390 and s390x:
1749 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
1750 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
1751 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
1752 are preserved pointing straight to the same implementation as the old ones.
1753 Given that, new callers will simply provide a too-big buffer to these
1754 functions. Any applications/libraries out there that embed jmp_buf or
1755 ucontext_t in an ABI-relevant data structure that have already been rebuilt
1756 against 2.19 headers will have to rebuilt again. This is necessary in any
1757 case to revert the breakage in their ABI caused by the glibc change.
1759 * Support for file description locks is added to systems running the
1760 Linux kernel. The standard file locking interfaces are extended to
1761 operate on file descriptions, not file descriptors, via the use of
1762 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
1763 are associated with an open file instead of a process.
1765 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
1767 * The minimum Linux kernel version that this version of the GNU C Library
1768 can be used with is 2.6.32.
1770 * Running the testsuite no longer terminates as soon as a test fails.
1771 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
1772 with PASS or FAIL lines for individual tests. A summary of the results is
1773 printed, including a list of failing lists, and "make check" exits with
1774 error status if there were any unexpected failures. "make check
1775 stop-on-test-failure=y" may be used to keep the old behavior.
1777 * The am33 port, which had not worked for several years, has been removed
1780 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
1781 supported; they now act the same as _DEFAULT_SOURCE (but generate a
1782 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
1783 conflicted with POSIX (support for which was removed in 2.19), the
1784 interfaces those macros enabled remain available when compiling with
1785 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
1786 test macros defined.
1788 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
1790 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
1791 This may improve lock scaling of existing programs on TX capable systems.
1792 The lock elision code is only built with --enable-lock-elision=yes and
1793 then requires a GCC version supporting the TX builtins. With lock elision
1794 default mutexes are elided via __builtin_tbegin, if the cpu supports
1795 transactions. By default lock elision is not enabled and the elision code
1798 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
1799 copy the path argument. This allowed programs to cause posix_spawn to
1800 deference a dangling pointer, or use an unexpected pathname argument if
1801 the string was modified after the posix_spawn_file_actions_addopen
1804 * All supported architectures now use the main glibc sysdeps directory
1805 instead of some being in a separate "ports" directory (which was
1806 distributed separately before glibc 2.17).
1808 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
1809 On configurations that support it (all Linux configurations), it's now
1810 used regardless of the --enable-add-ons switch to configure. It is no
1811 longer possible to build such configurations without pthreads support.
1813 * Locale names, including those obtained from environment variables (LANG
1814 and the LC_* variables), are more tightly checked for proper syntax.
1815 setlocale will now fail (with EINVAL) for locale names that are overly
1816 long, contain slashes without starting with a slash, or contain ".." path
1817 components. (CVE-2014-0475) Previously, some valid locale names were
1818 silently replaced with the "C" locale when running in AT_SECURE mode
1819 (e.g., in a SUID program). This is no longer necessary because of the
1822 * On x86-64, the dynamic linker's lazy-binding support is now compatible
1823 with application code using Intel MPX instructions. (With all previous
1824 versions, the MPX register state could be clobbered when making calls
1825 into or out of a shared library.) Note that while the new dynamic
1826 linker is compatible with all known x86 hardware whether or not it
1827 supports Intel MPX, some x86 instruction-set emulators might fail to
1828 handle the new instruction encodings. This is known to affect Valgrind
1829 versions up through 3.9 (but will be fixed in the forthcoming 3.10
1830 release), and might affect other tools that do instruction emulation.
1832 * Support for loadable gconv transliteration modules has been removed.
1833 The support for transliteration modules has been non-functional for
1834 over a decade, and the removal is prompted by security defects. The
1835 normal gconv conversion modules are still supported. Transliteration
1836 with //TRANSLIT is still possible, and the //IGNORE specifier
1837 continues to be supported. (CVE-2014-5119)
1839 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
1840 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
1841 resulting a denial-of-service security vulnerability in applications which
1842 use functions related to iconv. (CVE-2014-6040)
1846 * The following bugs are resolved with this release:
1848 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
1849 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
1850 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
1851 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
1852 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
1853 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
1854 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
1855 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
1856 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
1857 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
1858 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
1859 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
1860 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
1861 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
1862 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
1863 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
1864 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
1865 16431, 16453, 16474, 16506, 16510, 16529
1867 * Slovenian translations for glibc messages have been contributed by the
1868 Translation Project's Slovenian team of translators.
1870 * The public headers no longer use __unused nor __block. This change is to
1871 support compiling programs that are derived from BSD sources and use
1872 __unused internally, and to support compiling with Clang's -fblock
1873 extension which uses __block.
1875 * CVE-2012-4412 The strcoll implementation caches indices and rules for
1876 large collation sequences to optimize multiple passes. This cache
1877 computation may overflow for large collation sequences and may cause a
1878 stack or buffer overflow. This is now fixed to use a slower algorithm
1879 which does not use a cache if there is an integer overflow.
1881 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
1882 rules for large collation sequences to optimize multiple passes and falls
1883 back to alloca if malloc fails, resulting in a possible stack overflow.
1884 The implementation now falls back to an uncached collation sequence lookup
1887 * CVE-2013-4788 The pointer guard used for pointer mangling was not
1888 initialized for static applications resulting in the security feature
1889 being disabled. The pointer guard is now correctly initialized to a
1890 random value for static applications. Existing static applications need
1891 to be recompiled to take advantage of the fix (bug 15754).
1893 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
1894 to the d_name member of struct dirent, or omit the terminating NUL
1895 character. (Bugzilla #14699).
1897 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
1898 aligned_alloc functions could allocate too few bytes or corrupt the
1899 heap when passed very large allocation size values (Bugzilla #15855,
1902 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
1903 for AF_INET6 has been fixed (Bugzilla #16072).
1905 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
1906 pap_CW, quz_PE, the_NP.
1908 * Substantially revised locales: gd_GB, ht_HT
1910 * The LC_ADDRESS field was updated to support country_car for almost all
1913 * ISO 1427 definitions were updated.
1915 * ISO 3166 definitions were updated.
1917 * The localedef utility now supports --big-endian and --little-endian
1918 command-line options to generate locales for a different system from that
1919 for which the C library was built.
1921 * Binary locale files now only depend on the endianness of the system for
1922 which they are generated and not on other properties of that system. As a
1923 consequence, binary files generated with new localedef may be incompatible
1924 with old versions of the GNU C Library, and binary files generated with
1925 old localedef may be incompatible with this version of the GNU C Library,
1926 in the following circumstances:
1928 + Locale files may be incompatible on m68k systems.
1930 + Locale archive files (but not separate files for individual locales) may
1931 be incompatible on systems where plain "char" is signed.
1933 * The configure option --disable-versioning has been removed. Builds with
1934 --disable-versioning had not worked for several years.
1936 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
1937 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
1939 * SystemTap probes for malloc have been introduced.
1941 * SystemTap probes for slow multiple precision fallback paths of
1942 transcendental functions have been introduced.
1944 * Support for powerpc64le has been added.
1946 * The soft-float powerpc port now supports e500 processors.
1948 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
1950 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
1951 set of header declarations that are enabled by default, even when other
1952 feature test macros or compiler options such as -std=c99 would otherwise
1953 disable some of those declarations.
1955 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
1956 conflict with POSIX. The libbsd-compat library (which was a dummy library
1957 that did nothing) has also been removed.
1959 * Preliminary documentation about Multi-Thread, Async-Signal and
1960 Async-Cancel Safety has been added.
1962 * Change of ABI data structures for s390 and s390x:
1963 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
1964 allow for future hardware extensions. All library functions that accept or
1965 return these structures were versioned in order to provide backwards
1966 compatibility with existing code. However, not all cases can be handled
1967 with interface versioning. If an application embeds either structure into
1968 another structure and that structure is passed to another compilation unit
1969 which expects the newer larger-sized object then any access to the new
1970 fields will result in undefined behaviour. Similarly any access to fields
1971 that were moved by the enlarging of the structures will cause undefined
1972 behaviour. To fix the undefined behaviour all objects that are part of the
1973 final in-memory image must agree on the size of structures, and this may
1974 require recompilation.
1978 * The following bugs are resolved with this release:
1980 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
1981 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
1982 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
1983 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
1984 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
1985 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
1986 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
1987 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
1988 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
1989 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
1990 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
1991 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
1992 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
1995 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
1996 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
1997 Distributions can re-enable building and using pt_chown via the new configure
1998 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
1999 considerable security risks and should only be used if the distribution
2000 understands and accepts the risks.
2002 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
2005 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
2006 fixed (Bugzilla #15330).
2008 * Add support for calling C++11 thread_local object destructors on thread
2009 and program exit. This needs compiler support for offloading C++11
2010 destructor calls to glibc.
2012 * Improved worst case performance of libm functions with double inputs and
2015 * Support for priority inherited mutexes in pthread condition variables on
2016 non-x86 architectures.
2018 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
2020 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
2022 * Optimized string functions for ARM. Implemented by Will Newton and
2025 * Optimized libm functions for SPARC. Implemented by David S. Miller.
2027 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
2030 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
2031 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
2033 * Added a benchmark framework to track performance of functions in glibc.
2035 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
2036 It is based on draft TS 18661 and currently enabled as a GNU extension.
2038 * On Linux, the clock function now uses the clock_gettime system call
2039 for improved precision, rather than old times system call.
2041 * Added support for version-3 tz format files. This is needed when using
2042 the tz database release 2013e or later, and affects a few unusual cases --
2043 currently only TZ='America/Godthab' for time stamps after 2037.
2045 * Added new API functions pthread_getattr_default_np and
2046 pthread_setattr_default_np to get and set the default pthread
2047 attributes of a process.
2049 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
2050 This may improve lock scaling of existing programs on TSX capable systems.
2051 When the --enable-lock-elision=yes parameter is specified at configure
2052 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
2055 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
2056 availability). Implemented by Ryan S. Arnold.
2058 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
2062 * The following bugs are resolved with this release:
2064 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
2065 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
2066 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
2067 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
2068 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
2069 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
2070 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
2071 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
2072 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
2073 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
2074 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
2075 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
2076 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
2077 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
2078 14879, 14889, 14893, 14898, 14914.
2080 * Optimization of memcpy for MIPS.
2082 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
2083 EMFILE has been fixed (Bugzilla #14889).
2085 * The add-on ports collection is now distributed in the "ports" subdirectory
2086 of the main GNU C Library distribution, rather than separately.
2088 * Port to ARM AArch64 contributed by Linaro.
2090 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
2091 Optimized versions of memcpy, memset, and memcmp added for System z10 and
2093 Implemented by Andreas Krebbel.
2095 * The new function secure_getenv allows secure access to the environment,
2096 returning NULL if running in a SUID/SGID process. This function replaces
2097 the internal function __secure_getenv.
2099 * SystemTap static probes have been added into the dynamic linker.
2100 Implemented by Gary Benson.
2102 * Optimizations of string functions strstr, strcasestr and memmem.
2103 Implemented by Maxim Kuvyrkov.
2105 * The minimum Linux kernel version that this version of the GNU C Library
2106 can be used with is 2.6.16.
2108 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
2109 powerpc POWER7. Implemented by Will Schmidt.
2111 * New configure option --disable-nscd builds the C library such that it
2112 never attempts to contact the Name Service Caching Daemon (nscd).
2113 New configure option --disable-build-nscd avoids building nscd itself;
2114 this is the default if --disable-nscd is used.
2116 * Improved support for cross-compilation, including cross-testing and
2117 bootstrap builds without a previously built glibc.
2119 * Several testsuite tests are now able to test multiple IFUNC variants of an
2120 interface, rather than just testing the one that would be chooen by
2123 * New configure options --with-bugurl and --with-pkgversion, for
2124 distributors to use to embed their bug-reporting and package version
2125 information in --help and --version output.
2127 * The ttyname and ttyname_r functions on Linux now fall back to searching for
2128 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
2129 allows creation of chroots without the procfs mounted on /proc.
2131 * The `crypt' function now fails if passed salt bytes that violate the
2132 specification for those values. On Linux, the `crypt' function will
2133 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
2134 enabled, and fail on encrypted strings using the MD5 or DES algorithm
2135 when the mode is enabled.
2137 * The `clock_*' suite of functions (declared in <time.h>) is now available
2138 directly in the main C library. Previously it was necessary to link with
2139 -lrt to use these functions. This change has the effect that a
2140 single-threaded program that uses a function such as `clock_gettime' (and
2141 is not linked with -lrt) will no longer implicitly load the pthreads
2142 library at runtime and so will not suffer the overheads associated with
2143 multi-thread support in other code such as the C++ runtime library.
2145 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
2150 * The following bugs are resolved with this release:
2152 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
2153 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
2154 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
2155 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
2156 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
2157 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
2158 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
2159 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
2160 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
2161 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
2162 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
2163 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
2164 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
2165 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
2166 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
2167 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
2168 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
2169 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
2170 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
2171 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
2172 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
2173 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
2176 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
2177 configuring glibc with:
2178 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
2179 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
2180 Implemented by H.J. Lu.
2184 + define static_assert
2186 + do not declare gets
2188 + declare at_quick_exit and quick_exit also for ISO C11
2190 + aligned_alloc. NB: The code is deliberately allows the size parameter
2191 to not be a multiple of the alignment. This is a moronic requirement
2192 in the standard but it is only a requirement on the caller, not the
2195 + timespec_get added
2197 + uchar.h support added
2199 + CMPLX, CMPLXF, CMPLXL added
2201 Implemented by Ulrich Drepper.
2203 * Support for the IA-64 has been moved to ports.
2205 * Remove support for anything but ELF binary format
2207 * Checking versions of poll, ppoll added.
2208 Implemented by Ulrich Drepper.
2210 * More generic and 64-bit performance optimizations to math functions.
2211 Implemented by Ulrich Drepper.
2213 * New configure option --enable-obsolete-rpc makes the deprecated RPC
2214 headers and functions available at compile time as they were before
2215 version 2.14. This option will be removed at some time in the future
2216 after the TI-RPC library becomes fully sufficient for the needs of
2217 existing applications.
2219 * Compatibility code for Linux kernel versions before 2.4 has been removed.
2220 Note that glibc is not expected to work with any Linux kernel version
2223 * New header <sys/auxv.h> and function getauxval allowing easy access to
2224 the AT_* key-value pairs passed from the Linux kernel. The header also
2225 defines the HWCAP_* bits associated with the AT_HWCAP key.
2227 * New locales: mag_IN
2229 * New configure option --enable-systemtap builds SystemTap static probes
2230 into libc for setjmp and longjmp and into libpthread for various operations.
2231 So far the setjmp/longjmp probes and some of the libpthread probes are
2232 provided only for i*86 and x86_64.
2233 Implemented by Roland McGrath and Rayson Ho.
2235 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
2237 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
2240 * More optimized functions for SPARC. Implemented by David S. Miller.
2242 * Improved support for cross-compilation, especially bootstrap builds
2243 without a previously built glibc.
2245 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
2246 Chris Metcalf from Tilera.
2248 * Support for the old ARM ABI has been removed from ports. Only the EABI is
2249 now supported for ARM processors.
2251 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
2252 as the name of the dynamic linker, to distinguish it from the
2253 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
2255 * Support for CRIS has been removed from ports.
2257 * A new class of installed header has been documented for low-level
2258 platform-specific functionality. PowerPC added the first instance with a
2259 function to provide time base register access. Contributed by Tulio
2260 Magno Quites Machado Filho.
2262 * ix86 configurations now install header files that are consistent with
2263 what x86-64 configurations install. These same header files can be used
2264 for -m32, -m64, or -mx32 builds.
2265 Contributed by H.J. Lu.
2267 * Math library bug fixes. A thorough audit of all open math library bugs was
2268 conducted by Joseph Myers. Significant progress was made on many math
2269 library bugs resulting in more accurate exceptions and function results.
2270 Many thanks to all those that contributed including Andreas Jaeger for his
2271 patch review and work on the x87 trigonometric instruction issues.
2273 * Timezone data is no longer installed. Timezone-related binaries and scripts
2274 will continue to be installed. Users should obtain their timezone data from
2275 their distribution provider or from the tzdata package at
2276 <ftp://munnari.oz.au/pub/>.
2280 * The following bugs are resolved with this release:
2282 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
2283 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
2284 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
2285 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
2286 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
2287 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
2288 13484, 13506, 13515, 13523, 13524, 13538, 13540
2290 * New program pldd to list loaded object of a process
2291 Implemented by Ulrich Drepper.
2293 * Add nss_db support back to glibc. No more dependency on Berkeley db
2294 and support for initgroups lookups.
2295 Implemented by Ulrich Drepper.
2297 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
2298 Contributed by HJ Lu.
2300 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
2301 Contributed by HJ Lu.
2303 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
2304 on x86-32 and x86-64.
2305 Contributed by Liubov Dmitrieva.
2307 * Optimized strchr and strrchr for SSE on x86-32.
2308 Contributed by Liubov Dmitrieva.
2310 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
2311 for x86-64 and x86-32.
2312 Contributed by Liubov Dmitrieva.
2314 * New interfaces: scandirat, scandirat64
2315 Implemented by Ulrich Drepper.
2317 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
2318 Implemented by Ulrich Drepper.
2320 * nscd now also caches the netgroup database.
2321 Implemented by Ulrich Drepper.
2323 * Integrate libm with gcc's -ffinite-math-only option.
2324 Implemented by Ulrich Drepper.
2326 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
2327 to math functions. Implemented by Ulrich Drepper.
2329 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
2330 Implemented by Ulrich Drepper.
2332 * New Linux interfaces: process_vm_readv, process_vm_writev
2334 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
2335 Implemented by Ulrich Drepper.
2337 * Optimized nearbyint and strcasecmp for PPC.
2338 Implemented by Adhemerval Zanella.
2340 * New locales: bho_IN, unm_US, es_CU, ta_LK
2344 * The following bugs are resolved with this release:
2346 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
2347 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
2348 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
2349 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
2350 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
2351 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
2352 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
2353 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
2354 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
2355 12795, 12811, 12813, 12814, 12841
2357 * The RPC implementation in libc is obsoleted. Old programs keep working
2358 but new programs cannot be linked with the routines in libc anymore.
2359 Programs in need of RPC functionality must be linked against TI-RPC.
2360 The TI-RPC implementation is IPv6 enabled and there are other benefits.
2362 Visible changes of this change include (obviously) the inability to link
2363 programs using RPC functions without referencing the TI-RPC library and the
2364 removal of the RPC headers from the glibc headers.
2365 Implemented by Ulrich Drepper.
2367 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
2368 syncfs, setns, sendmmsg
2370 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
2371 yue_HK, lij_IT, mhr_RU
2373 * New encodings: CP770, CP771, CP772, CP773, CP774
2375 * New program sotruss to trace calls through PLTs
2376 Implemented by Ulrich Drepper.
2378 * The malloc hook implementation is marked deprecated and will be removed
2379 from the default implementation in the next version. The design never
2380 worked ever since the introduction of threads. Even programs which do
2381 not create threads themselves can use multiple threads created internally.
2385 * The following bugs are resolved with this release:
2387 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
2388 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
2389 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
2390 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
2393 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
2395 * POWER7 optimizations: memset, memcmp, strncmp
2397 * New optimized string functions for x86-64: strnlen (SSE2),
2398 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
2399 Implemented by Ulrich Drepper.
2403 * The following bugs are resolved with this release:
2405 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
2406 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
2407 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
2408 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
2409 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
2410 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
2411 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
2412 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
2414 * New interfaces: pthread_getname_np, pthread_setname_np
2416 * New Linux interface: recvmmsg
2418 * STT_GNU_IFUNC implemented for Sparc by David Miller.
2420 * The dynamic linker now recognizes supported ABI versions from the
2421 EI_ABIVERSION field in the ELF header.
2422 Implemented by Ulrich Drepper.
2424 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
2425 will not be used to fill in password fields in the passwd.byname replies.
2426 Instead it is used to synthesize the shadow.byname table, should it be
2427 missing. This is a useful mode in some installations involving Solaris.
2428 Implemented by Ulrich Drepper.
2430 * New locales: kok_IN, sq_MK, cv_RU
2434 * The following bugs are resolved with this release:
2436 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
2437 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
2438 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
2439 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
2440 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
2441 10789, 10817, 10823, 10840, 10847
2443 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
2445 Implemented by Ulrich Drepper.
2447 * Checking version of longjmp added that fails if an uninitialized stack
2448 frame would be created. Implemented by Ulrich Drepper.
2450 * STT_GNU_IFUNC is now supported in static executables.
2451 Implemented by H.J. Lu.
2453 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
2455 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
2456 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
2457 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
2458 Contributed by H.J. Lu.
2460 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
2461 Implemented by Ulrich Drepper.
2463 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
2465 Contributed by H.J. Lu.
2467 * Support for fma instruction in AVX on x86-64.
2468 Implemented by H.J. Lu and Ulrich Drepper.
2470 * AVX support in x86-64 auditing support in ld.so.
2471 Implemented by H.J. Lu.
2473 * STB_GNU_UNIQUE support added.
2474 Implemented by Ulrich Drepper.
2476 * Implement second fallback mode for optimized DNS lookup for even more
2477 broken environments. If two requests from the same port are not
2478 handled correctly close the socket and open a new one before sending
2479 the second request. The 'single-request-reopen' option in /etc/resolv.conf
2480 can be used to select this mode right away, instead of rediscovering the
2481 necessity is every process again.
2482 Implemented by Ulrich Drepper.
2484 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
2485 Implemented by Adam Tkac.
2487 * Optimized iconv conversions for S390x.
2488 Implemented by Andreas Krebbel.
2490 * Using condvars with PI mutexes is now more efficient due to kernel
2491 support for requeueing to PI futexes. NPTL support added for x86-64.
2492 Implemented by Ulrich Drepper.
2494 * New locales: ps_AF, my_MM
2498 * The following bugs are resolved with this release:
2500 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
2501 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
2502 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
2503 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
2504 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
2506 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
2507 Implemented by Ulrich Drepper.
2509 * New Linux interfaces: accept4, fallocate, fallocate64.
2510 Implemented by Ulrich Drepper.
2512 * Correct declarations of string function when used in C++ code. This
2513 could lead to compile errors for invalid C++ code.
2515 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
2518 * New POSIX 2008 interface: psiginfo
2519 Implemented by Ulrich Drepper.
2521 * New ISO C++1x interfaces: quick_exit, at_quick_exit
2522 Implemented by Ulrich Drepper.
2524 * Support for selecting between multiple function definitions at runtime
2525 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
2527 * The libcrypt library can now use the hash function implementations in
2528 NSS. Implemented by Ulrich Drepper.
2530 * The malloc implementation can be compiled to be less memory efficient
2531 but higher performing in multi-threaded programs.
2532 Implemented by Ulrich Drepper.
2534 * New locales: nan_TW@latin, ks_IN
2536 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
2537 Implemented by Ulrich Drepper.
2539 * Extended printf hook support. It is possible to use user-defined types
2540 and extend existing format specifiers.
2541 Implemented by Ulrich Drepper.
2543 * Handling for group shadow files has been added.
2544 Implemented by Ulrich Drepper.
2546 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
2547 servers (the case, e.g., for some people using the built-in DNS
2548 server in ADSL modems/routers). There is a once-per-process timeout
2549 in case of a broken server. To avoid it, users can run nscd or put
2550 'options single-request' in /etc/resolv.conf.
2551 Implemented by Ulrich Drepper.
2555 * The following bugs are resolved with this release:
2557 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
2558 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
2559 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
2560 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
2561 6968, 6974, 6980, 6995, 7008, 7009, 7029
2563 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
2564 up at the same time. Implemented by Ulrich Drepper.
2566 * TLS descriptors for LD and GD on x86 and x86-64.
2567 Implemented by Alexandre Oliva.
2569 * getaddrinfo now handles DCCP and UDPlite.
2570 Implemented by Ulrich Drepper.
2572 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
2573 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
2574 Implemented by Ulrich Drepper.
2576 * New implementation of memmem, strstr, and strcasestr which is O(n).
2577 Implemented by Eric Blake.
2579 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
2581 * Implement "e" option for popen to open file descriptor with the
2582 close-on-exec flag set. Implemented by Ulrich Drepper.
2584 * Implement "b" mode for fmemopen. In this mode writes writes don't
2585 implicitly add a NUL byte and seeks from the end of the buffer really
2586 use the buffer end, not the string length as the basis.
2587 Implemented by Ulrich Drepper.
2589 * Many functions, exported and internal, now atomically set the close-on-exec
2590 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
2592 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
2594 Implemented by Pravin Satpute.
2596 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
2600 * The following bugs are resolved with this release:
2602 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
2603 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
2604 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
2605 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
2606 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
2607 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
2608 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
2610 * New locales: bo_CN, bo_IN, shs_CA.
2612 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
2614 * Sorting rules for some Indian languages (Devanagari and Gujarati).
2615 Implemented by Pravin Satpute.
2617 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
2619 * nscd caches now all timeouts for DNS entries
2620 Implemented by Ulrich Drepper.
2622 * nscd is more efficient and wakes up less often.
2623 Implemented by Ulrich Drepper.
2625 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
2626 vdprintf, and obstack_vprintf.
2627 Implemented by Jakub Jelinek.
2629 * Faster memset for x86-64.
2630 Implemented by Harsha Jagasia and H.J. Lu.
2632 * Faster memcpy on x86.
2633 Implemented by Ulrich Drepper.
2635 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
2636 Implemented by Ulrich Drepper.
2638 * Faster sqrt and sqrtf implemention for some PPC variants.
2639 Implemented by Steven Munroe.
2643 * The following bugs are resolved with this release:
2645 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
2646 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
2647 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
2648 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
2649 5071, 5103, 5104, 5112, 5113, 5184, 5186
2651 * More checking functions: fread, fread_unlocked, open*, mq_open.
2652 Implemented by Jakub Jelinek and Ulrich Drepper.
2654 * Extend fortification to C++. Implemented by Jakub Jelinek.
2656 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
2657 by not recognizing 'a' as a modifier when those specs are requested.
2658 Implemented by Jakub Jelinek.
2660 * PPC optimizations to math and string functions.
2661 Implemented by Steven Munroe.
2663 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
2664 options to be passed. Implemented by Ulrich Drepper.
2666 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
2668 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
2669 Implemented by Ulrich Drepper.
2671 * Handle private futexes in the NPTL implementation.
2672 Implemented by Jakub Jelinek and Ulrich Drepper.
2674 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
2675 Implemented by Roland McGrath and Ulrich Drepper.
2677 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
2679 * SHA-256 and SHA-512 based password encryption.
2680 Implemented by Ulrich Drepper.
2682 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
2683 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
2686 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
2687 Implemented by Ulrich Drepper.
2691 * The following bugs are resolved with this release:
2693 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
2694 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
2695 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
2696 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
2697 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
2698 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
2699 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
2702 * New Linux interfaces: epoll_pwait, sched_getcpu.
2704 * New generic interfaces: strerror_l.
2706 * nscd can now cache the services database. Implemented by Ulrich Drepper.
2710 * The following bugs are resolved with this release:
2712 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
2713 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
2714 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
2715 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
2716 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
2717 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
2718 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
2719 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
2720 3225, 3251, 3252, 3253, 3273
2722 * For Linux, the sorting of addresses returned by getaddrinfo now also
2723 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
2724 Implemented by Ulrich Drepper.
2726 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
2727 Implemented by Ulrich Drepper.
2729 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
2731 * New iconv module for MIK. Contributed by Alexander Shopov.
2733 * For sites with broken group and/or passwd database, the auto-propagate
2734 option of nscd can prevent creating ID lookup entries from the results
2735 of a name lookup and vice versa. This usually is no problem but some
2736 site might have problems with the default behavior.
2737 Implemented by Ulrich Drepper.
2739 * Iterating over entire database in NIS can be slow. With the
2740 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
2741 to trade time for memory. The entire database will be read at once.
2742 Implemented by Ulrich Drepper.
2744 * The interfaces introduced in RFC 3542 have been implemented by
2747 * Support for the new ELF hash table format was added by Ulrich Drepper.
2749 * Support for priority inheritance mutexes added by Jakub Jelinek and
2752 * Support for priority protected mutexes added by Jakub Jelinek.
2754 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
2755 or_IN, csb_PL, fy_NL, sr_ME.
2759 * More overflow detection functions.
2761 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
2762 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
2764 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
2765 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
2766 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
2767 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
2768 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
2769 by Masahide Washizawa.
2771 * It is now possible to install audit libraries for the dynamic linker using
2772 LD_AUDIT. Implemented by Ulrich Drepper.
2774 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
2775 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
2776 For a libc and libpthread that works well on Linux 2.4 kernels, we
2777 recommend using the stable 2.3 branch.
2779 * The new function open_wmemstream acts like open_memstream,
2780 but uses a wchar_t wide character buffer.
2782 * The new function ppoll is an improved version of poll, similar to pselect.
2784 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
2785 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
2786 renameat, unlinkat, linkat, symlinkat, readlinkat.
2788 * New Linux kernel system calls: unshare,
2789 inotify_init, inotify_add_watch, inotify_rm_watch.
2791 * The euidaccess function is now also known by the alias eaccess,
2792 for compatibility with some other systems.
2794 * Timezone data updated to 2006b version.
2798 * The following bugs are resolved with this release:
2800 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
2801 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
2802 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
2803 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
2804 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
2805 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
2807 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2809 * As of this release, GCC 4 can be used to compile the C Library.
2811 * Timezone data updated to 2005m version.
2815 * The following bugs are resolved with this release:
2817 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
2818 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
2819 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
2820 777, 787, 821, 822, 823, 825
2822 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
2826 * Support for RFC 3678. Real implementations exist only for Linux so far.
2827 Implemented by Ulrich Drepper.
2829 * nscd can now cache entries persistently. Expiring entries are reloaded.
2830 For speedups the cache can be shared in memory with client processes.
2831 Implemented by Ulrich Drepper.
2833 * nscd can now perform SELinux checks.
2834 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
2836 * getaddrinfo queries are now cached. Canonical name lookup is performed
2838 Implemented by Ulrich Drepper.
2840 * The nothrow function attribute is used when headers are used by gcc when
2841 compiling C code. This can avoid significant amounts of exception
2844 * The malloc functions perform more error checking and are stricter when
2845 it comes to reacting on errors. The default action is to terminate
2846 the process after showing an error message. Implemented by Ulrich Drepper.
2848 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
2849 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
2851 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
2852 namespaces using the new function dlmopen(). This feature is of course,
2853 like most other dynamic loading functionality, not available in statically
2854 linked applications. Implemented by Ulrich Drepper.
2856 * Low-overhead boundary checking variants of string and some stdio functions
2857 were added. These are to be used in conjunction with a gcc patch by
2858 Jakub Jelinek which adds calls to these functions if possible.
2859 Implemented by Jakub Jelinek and Ulrich Drepper.
2861 * Old code for several operating systems and machine architectures that
2862 have not been in working condition in a long time have been removed from
2863 the main source tree maintained by the GNU C Library's maintainers.
2864 These files are now reside in the separate `ports' source module
2865 that is usable as an add-on when building the library.
2869 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
2870 interrogate the dynamic linker, compatible with the Solaris interface.
2872 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
2873 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
2875 * getifaddrs now uses the netlink interface on Linux to get its information.
2876 Implemented by Thorsten Kukuk.
2878 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
2879 Implemented by Ulrich Drepper.
2881 * support for non-executable stacks on x86 has been added. Changes mostly
2884 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
2887 * getaddrinfo now performs destination address selection according to
2892 * Thread-safe interfaces for many functions that access locale data
2893 were added in version 2.3, but these features were omitted from NEWS.
2894 Many functions have variants with an `_l' suffix that take a `locale_t'
2895 object as a parameter rather than consulting the current locale.
2896 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
2897 create and maintain `locale_t' objects. Additionally, the new function
2898 `uselocale' sets "the current locale" (as used by functions not so
2899 parameterized) set for an individual thread. These features were added
2900 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
2902 * The functions getresuid, getresgid, setresuid, and setresgid, which
2903 have long been available on Linux, are now declared in <unistd.h>
2904 and are now also available on the Hurd.
2906 * ELF thread-local storage support (TLS) now works on x86-64.
2908 * The new dynamic string token $LIB is expanded in shared library names.
2909 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
2911 * Aldy Hernandez contributed complete software floating point support for
2912 PowerPC machines with no FPU.
2914 * fexecve is implemented on Linux.
2916 * The `btowc' function should work at least twice as fast due to
2917 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
2919 * With approriate thread add-ons cancelable functions are now implemented
2920 in libc.so as well. No need to call the function in libpthread. This
2921 change allowed to finally disable the incorrect and expensive handling
2922 of weak definition in ld.so.
2924 * Yet more PLT entries in libc.so have been removed. We finally arrived
2925 at the bare minimum. Startup times improved appropriately.
2927 * Support for the new Linux/x86 system call interface was added. The
2928 AT_SYSINFO auxiliary vector entry is recognized and handled.
2932 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
2935 * iconv (the program and the interface) now accepts empty names (excluding
2936 options like //TRANSLIT) to mean "use charset of current locale".
2938 * localedef can now transliterate characters in strings which are not in
2939 the provided charmap. The information from the input locale is used.
2941 * Prelinking support was added for ELF targets. This requires additional
2942 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
2944 * Read-only stdio streams now use mmap to speed up operation by eliminating
2945 copying and buffer underflows. To use add 'm' to the mode string of
2946 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
2948 * The malloc functions were completely rewritten by Wolfram Gloger based
2949 on Doug Lea's malloc-2.7.0.c.
2951 * Isamu Hasegawa contributed a completely new and POSIX-conformant
2952 implementation of regex.
2954 * Bruno Haible upgraded the iconv and locale implementation to support
2957 * Contents of the LC_* and LANG environment variables in the CEN style are
2958 not recognized anymore. It never was used. Change by Ulrich Drepper.
2960 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
2961 thread-local storage (TLS) ABI on some platforms.
2962 Changes by Ulrich Drepper. SH support by Kaz Kojima.
2964 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
2965 EUC-JISX0213, and TSCII.
2967 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
2968 BSD-compatible interface for getting all network interface addresses.
2969 Implementation for IPv4 by Roland McGrath.
2971 * Loading of locale data is faster due to the introduction of a locale
2972 archive. Implemented by Roland McGrath and Ulrich Drepper.
2974 * Startup times are significantly reduced by not using exported functions
2975 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
2978 * Steven Munroe contributed a port to PowerPC64/Linux.
2982 * The Hurd now uses the GNU libio implementation of stdio rather than the
2983 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
2985 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
2986 with the same behavior as the Linux system call of the same name.
2990 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
2991 128-bit long double format.
2993 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
2994 IBM1161, and IBM1162 charsets.
2996 * Andreas Jaeger contributed a port to x86-64/Linux.
2998 * Peter Bruin contributed a port to PowerPC/Hurd.
3000 * libc functions using I/O streams now can handle wide-oriented streams
3003 * optimizations in the dynamic linker. Binaries created by recent binutils
3004 versions start up quicker due to reduced time spent on relocations.
3006 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
3010 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
3011 asinh, atanh, j0 for the 128-bit long double format.
3013 * Bruno Haible updated all the code handling Unicode in some form to
3014 support Unicode 3.1.
3016 * Speed of regex for single-byte locales is back to previous levels.
3017 Patch by Isamu Hasegawa.
3019 * Alpha, SPARC, and IA-64 now also using floating stacks.
3021 * Startup time of internationalized applications greatly improved through
3022 iconv cache. Use iconvconfig to generate the cache file.
3023 Contributed by Ulrich Drepper.
3025 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
3026 severe performance problems. Patch by David Mosberger.
3028 * The Hurd port got a lot more functionality like AIO, various stdio
3029 extensions, etc. Mainly done by Roland McGrath.
3031 * mtrace can now lookup symbols in shared libraries.
3035 * Intel's IA-64 math library is largely integrated. It provides fast and
3036 accurate implementatations for most basic and standard math functions
3037 in float, double, and long double format.
3039 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
3040 and asin for the 96-bit long double format and asin, log, tan for the
3041 128-bit long double format.
3043 * The beginning of a last-bit accurate math library by IBM Haifa were added.
3044 The basic double functions exist today. Contributed by Abraham Ziv
3045 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
3046 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
3048 * An asynchronous name lookup library was added. The interface is designed
3049 after POSIX AIO. The proposal was circulated beforehand to get comments.
3050 No negative ones came in. Implemented by Ulrich Drepper.
3052 * Port to S390/64bit contributed by Martin Schwidefsky
3053 <schwidefsky@de.ibm.com>.
3055 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
3056 of functions for Linux/IA-64.
3058 * The RPC code is now thread safe. Threads can now use the same service
3059 of different services at the same time. Patch by Eric Norum
3060 <eric.norum@usask.ca> with some help by Ulrich Drepper.
3062 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
3063 family of functions for Linux/S390.
3065 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
3066 of functions for Linux/x86.
3068 * Port to Linux/CRIS contributed by Axis Communications.
3072 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
3073 we can now check for namespace violations and missing declarations. The
3074 result is that almost all headers are now Unix-compliant (as defined in
3075 the upcoming XPG6). The negative side is that some programs might need
3076 corrections, too, if they depend on the incorrect form of the headers in
3077 previous versions which defined too many symbols and included too many
3080 * regex now handles multibyte character sets correctly.
3081 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
3083 * iconv (the program) does now conform to the upcoming XPG6 and handles
3084 charmaps. Instead of the charset names the path of charmaps can be
3085 provided and the conversion happens based on this data.
3086 Contributed by Ulrich Drepper.
3088 * The locale program now provides detailed information about the installed
3093 only lists the names of the supported locales
3097 provides details such as country, language, and codeset name.
3098 Contributed by Ulrich Drepper.
3102 * The gencat program now parses the input file according to the charset
3103 selected by the LC_CTYPE category. This is important for stateful
3104 character sets. To make generating catalogs easier there is a way
3105 to overwrite the charset selected by the locale: before the first
3106 message or $ quote line the catalog can contain a line like
3108 $ codeset=ISO-8859-2
3110 to select the charset (ISO-8859-2 in this case).
3112 Implemented by Shinya Hanataka and Ulrich Drepper.
3114 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
3115 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
3116 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
3118 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
3119 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
3121 * The LANGUAGE environment variable is now ignored unless the locale is
3122 changed from the default "C" locale.
3124 * The usual bug fixes.
3128 * Greg McGary added runtime support for bounds checking using gcc's
3129 new -fbounded-pointers option. ix86 target is complete. PowerPC
3132 * Thorsten Kukuk added secure mode support to nscd.
3134 * The Berkeley db libraries have been removed.
3136 Related, the nss_db module is now in a separate package since it
3137 obviously requires a database library being available.
3139 * Wide character I/O streams implemented by Ulrich Drepper.
3141 * Functions from the extended socket API added by Ulrich Drepper.
3143 * Functions feenableexcept and fedisableexcept to control the
3144 behaviour of individual exceptions have been added by Andreas Jaeger.
3146 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
3148 * The resolver code has been updated from bind 8.2.3-T5B which supports
3149 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
3152 This change could in some situations effect backward compatibility. Since
3153 now `_res' is a thread-local instead of a global variable, modifying it
3154 in one thread does not have any effect in other threads.
3156 The resolver library was also extended to allow IPv6 as the transport
3157 protocol for the requests. This work was done by Stig Venaas.
3159 * Compatibility code for K&R C compilers has been removed from the
3160 header files. A ISO C compiler is needed to use the library
3161 (conforming to either C89 or C99 standard).
3163 * Complete rewrite of the localedef program to support multibyte character
3164 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
3165 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
3166 Implemented by Ulrich Drepper.
3168 Bruno Haible significantly improved the generation and use of the data
3169 structures for the wide character tables.
3171 * Plural handling in gettext implemented by Ulrich Drepper.
3173 * The utmp daemon has been removed.
3175 * The port to MIPS-Linux has been finished by Andreas Jaeger.
3177 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
3180 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
3182 * POSIX barriers implemented by Kaz Kylheku.
3184 * POSIX spawn function family implemented by Ulrich Drepper.
3186 * POSIX spinlocks are now available.
3188 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
3190 * the configure option --enable-kernel=X.Y.Z allows to strip out
3191 compatibility for kernel versions before X.Y.Z. This is currently only
3192 implemented for Linux.
3194 * the sockaddr_in6 structure changed. The IPv6 working group added a new
3195 field sin6_scope_id. This means that all programs using IPv6 should be
3196 recompiled. Don't expect binary compatibility with previous glibc
3199 * various conversion modules for IBM character sets contributed by
3202 * IA-64 port by Jes Sorensen and HJ Lu.
3216 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
3218 * New xdr functions are added; some rpc functions are now 64bit clean.
3220 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
3222 * Fixed known incompatibilities with glibc 2.0.
3224 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
3226 * Optimized a number of functions (especially the ELF dynamic loader).
3228 * Update timezone data files.
3230 * lots of charmaps corrections
3232 * some new locale definitions and charmaps
3237 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
3238 conform to POSIX member type requirements. Symbol versions have been
3239 adjusted as needed within the library, and for direct use by applications,
3240 but there is potential for problems if third-party libraries use
3241 struct timeval as part of their interface. This does not present
3242 a problem for X and other "essential" system libraries.
3244 * An additional locale model to support C++ Standard Library locale
3245 model and probably more was implemented by Ulrich Drepper.
3247 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
3250 * Miles Bader provided the `argp' function family to support hierachical
3251 command line argument parsing, layered on top of getopt.
3253 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
3255 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
3258 * scanf recognizes the %a and %A format for scanning floating point numbers.
3260 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
3261 information and interfaces for the available integer types.
3263 * about 130 new math functions were added to implement the ISO C9x math
3266 * the new header <complex.h> contains definitions of the complex math
3267 functions from ISO C 9X.
3269 * the new header <tgmath.h> defines generic macros to use complex or
3270 real valued functions.
3272 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
3274 * Andreas Jaeger provided a test suite for the math library.
3276 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
3278 * Ulrich Drepper added character set conversion functions (iconv).
3280 * Optimized string functions have been added.
3282 * The localedata addon is now part of glibc.
3284 * An implementation of profiling shared libraries was added by Ulrich Drepper.
3286 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
3287 daemon for NSS (nscd).
3289 Missing a better place here are some numbers on improvements. Under
3290 Linux 2.1.125 un-tar-ing the kernel sources takes
3294 using local files 12.19s 6.88s 22.91s
3296 using NIS 13.92s 8.91s 26.34s
3298 using NIS & nscd 10.37s 7.34s 25.30s
3300 using NIS+ 27.57s 30.37s 640.46s
3302 using NIS+ & nscd 10.25s 7.83s 26.51s
3304 using NIS & old nscd [1] 13.83s 8.32s 29.60s
3306 Keep in mind that non-namelookup related operations dominate above times.
3307 It was just a common complain that using NIS+ unpacking the kernel is
3310 [1] The old nscd implementation is not available anymore since it was
3311 distributed with glibc up to version 2.0.98 and thus is now replaced.
3313 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
3315 * Mark Kettenis provided a Hesiod NSS module.
3317 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
3318 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
3320 * rcmd can now handle netgroups (Dick Streefland).
3322 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
3325 * Support for the IPv6 protocol has been added to the socket API, as per the
3326 latest draft standards.
3328 * Support for Linux 2.2 has been added.
3330 * Interface changes relative to the latest 2.0.x release:
3331 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3332 addseverity NEW: Unix98
3333 alphasort64 NEW: LFS
3334 argp_err_exit_status NEW: argp, GNU ext
3335 argp_error NEW: argp, GNU ext
3336 argp_failure NEW: argp, GNU ext
3337 argp_help NEW: argp, GNU ext
3338 argp_parse NEW: argp, GNU ext
3339 argp_program_bug_address NEW: argp, GNU ext
3340 argp_program_version NEW: argp, GNU ext
3341 argp_program_version_hook NEW: argp, GNU ext
3342 argp_state_help NEW: argp, GNU ext
3343 argp_usage NEW: argp, GNU ext
3344 authdes_create NEW: Secure RPC
3345 authdes_getucred NEW: Secure RPC
3346 authdes_pk_create NEW: Secure RPC
3347 backtrace NEW: GNU ext.
3348 backtrace_symbols NEW: GNU ext.
3349 backtrace_symbols_fd NEW: GNU ext.
3351 cacosf NEW: ISO C 9x
3352 cacosh NEW: ISO C 9x
3353 cacoshf NEW: ISO C 9x
3354 cacoshl NEW: ISO C 9x
3355 cacosl NEW: ISO C 9x
3362 casinf NEW: ISO C 9x
3363 casinh NEW: ISO C 9x
3364 casinhf NEW: ISO C 9x
3365 casinhl NEW: ISO C 9x
3366 casinl NEW: ISO C 9x
3368 catanf NEW: ISO C 9x
3369 catanh NEW: ISO C 9x
3370 catanhf NEW: ISO C 9x
3371 catanhl NEW: ISO C 9x
3372 catanl NEW: ISO C 9x
3373 cbc_crypt NEW: Secure RPC
3377 ccoshf NEW: ISO C 9x
3378 ccoshl NEW: ISO C 9x
3384 cimagf NEW: ISO C 9x
3385 cimagl NEW: ISO C 9x
3386 clearerr_locked REMOVED
3387 clntunix_create NEW: sunrpc ext
3389 clog10 NEW: ISO C 9x
3390 clog10f NEW: ISO C 9x
3391 clog10l NEW: ISO C 9x
3401 cprojf NEW: ISO C 9x
3402 cprojl NEW: ISO C 9x
3404 crealf NEW: ISO C 9x
3405 creall NEW: ISO C 9x
3410 csinhf NEW: ISO C 9x
3411 csinhl NEW: ISO C 9x
3414 csqrtf NEW: ISO C 9x
3415 csqrtl NEW: ISO C 9x
3419 ctanhf NEW: ISO C 9x
3420 ctanhl NEW: ISO C 9x
3422 des_setparity NEW: Secure RPC
3423 ecb_crypt NEW: Secure RPC
3424 endutxent NEW: Unix98
3426 exp10f NEW: ISO C 9x
3427 exp10l NEW: ISO C 9x
3431 fattach NEW: STREAMS
3432 fdetach NEW: STREAMS
3436 feclearexcept NEW: ISO C 9x
3437 fegetenv NEW: ISO C 9x
3438 fegetexceptflag NEW: ISO C 9x
3439 fegetround NEW: ISO C 9x
3440 feholdexcept NEW: ISO C 9x
3442 feraiseexcept NEW: ISO C 9x
3443 ferror_locked REMOVED
3444 fesetenv NEW: ISO C 9x
3445 fesetexceptflag NEW: ISO C 9x
3446 fesetround NEW: ISO C 9x
3447 fetestexcept NEW: ISO C 9x
3448 feupdateenv NEW: ISO C 9x
3449 fflush_locked REMOVED
3453 fgets_unlocked NEW: GNU ext.
3454 fileno_locked REMOVED
3466 fputc_locked REMOVED
3467 fputs_unlocked NEW: GNU ext.
3468 fread_unlocked NEW: GNU ext.
3473 fstatvfs NEW: Unix98
3477 ftruncate64 NEW: LFS
3479 fwrite_unlocked NEW: GNU ext.
3480 gai_strerror NEW: IPv6
3484 getchar_locked REMOVED
3486 getdate_err NEW: Unix98
3487 getdate_r NEW: GNU ext.
3489 getnameinfo NEW: IPv6
3490 getnetname NEW: Secure RPC
3491 getpmsg NEW: STREAMS
3492 getpt NEW: Unix98 PTY
3493 getrlimit64 NEW: LFS
3494 getutxent NEW: Unix98
3495 getutxid NEW: Unix98
3496 getutxline NEW: Unix98
3497 glob64 NEW: GNU ext.
3498 globfree64 NEW: GNU ext.
3499 gnu_get_libc_release NEW: GNU ext.
3500 gnu_get_libc_version NEW: GNU ext.
3501 grantpt NEW: Unix98 PTY
3502 host2netname NEW: Secure RPC
3504 iconv_close NEW: iconv
3505 iconv_open NEW: iconv
3506 if_freenameindex NEW: IPv6
3507 if_indextoname NEW: IPv6
3508 if_nameindex NEW: IPv6
3509 if_nametoindex NEW: IPv6
3510 in6addr_any NEW: IPv6
3511 in6addr_loopback NEW: IPv6
3512 inet6_isipv4mapped NEW: IPv6
3513 isastream NEW: STREAMS
3514 iswblank NEW: GNU ext.
3515 key_decryptsession NEW: Secure RPC
3516 key_decryptsession_pk NEW: Secure RPC
3517 key_encryptsession NEW: Secure RPC
3518 key_encryptsession_pk NEW: Secure RPC
3519 key_gendes NEW: Secure RPC
3520 key_get_conv NEW: Secure RPC
3521 key_secretkey_is_set NEW: Secure RPC
3522 key_setnet NEW: Secure RPC
3523 key_setsecret NEW: Secure RPC
3524 llrint NEW: ISO C 9x
3525 llrintf NEW: ISO C 9x
3526 llrintl NEW: ISO C 9x
3527 llround NEW: ISO C 9x
3528 llroundf NEW: ISO C 9x
3529 llroundl NEW: ISO C 9x
3534 lrintf NEW: ISO C 9x
3535 lrintl NEW: ISO C 9x
3536 lround NEW: ISO C 9x
3537 lroundf NEW: ISO C 9x
3538 lroundl NEW: ISO C 9x
3540 makecontext NEW: Unix98
3541 mempcpy NEW: GNU ext.
3544 modify_ldt NEW: kernel
3548 nearbyint NEW: ISO C 9x
3549 nearbyintf NEW: ISO C 9x
3550 nearbyintl NEW: ISO C 9x
3551 netname2host NEW: Secure RPC
3552 netname2user NEW: Secure RPC
3553 nexttoward NEW: ISO C 9x
3554 nexttowardf NEW: ISO C 9x
3555 nexttowardl NEW: ISO C 9x
3559 passwd2des NEW: Secure RPC
3561 pow10f NEW: GNU ext.
3562 pow10l NEW: GNU ext.
3565 printf_size NEW: GNU ext.
3566 printf_size_info NEW: GNU ext.
3567 profil_counter REMOVED
3568 pthread_mutexattr_getkind_np REPLACED
3569 pthread_mutexattr_setkind_np REPLACED
3570 ptsname NEW: Unix98 PTY
3571 ptsname_r NEW: Unix98 PTY
3573 putchar_locked REMOVED
3574 putgrent NEW: GNU ext.
3576 putpmsg NEW: STREAMS
3577 pututxline NEW: Unix98
3581 readdir64_r NEW: LFS
3582 remquo NEW: ISO C 9x
3583 remquof NEW: ISO C 9x
3584 remquol NEW: ISO C 9x
3586 roundf NEW: ISO C 9x
3587 roundl NEW: ISO C 9x
3589 scalbln NEW: ISO C 9x
3590 scalblnf NEW: ISO C 9x
3591 scalblnl NEW: ISO C 9x
3593 sendfile NEW: kernel
3594 setcontext NEW: Unix98
3595 setrlimit64 NEW: LFS
3596 setutxent NEW: Unix98
3598 sigignore NEW: Unix98
3599 sigqueue NEW: POSIX.1b
3600 sigrelse NEW: Unix98
3601 sigset NEW: POSIX.1b
3602 sigtimedwait NEW: POSIX.1b
3603 sigwaitinfo NEW: POSIX.1b
3604 sincos NEW: GNU ext.
3605 sincosf NEW: GNU ext.
3606 sincosl NEW: GNU ext.
3610 strcasestr NEW: GNU ext.
3611 strtoimax NEW: ISO C 9x
3612 strtoumax NEW: ISO C 9x
3613 strverscmp NEW: GNU ext.
3614 svcauthdes_stats NEW: Secure RPC
3615 svcunix_create NEW: sunrpc etx
3616 svcunixfd_create NEW: sunrpc ext
3617 swapcontext NEW: Unix98
3618 tcgetsid NEW: Unix98 PTY
3619 tdestroy NEW: GNU ext.
3620 tgamma NEW: ISO C 9x
3621 tgammaf NEW: ISO C 9x
3622 tgammal NEW: ISO C 9x
3626 truncf NEW: ISO C 9x
3627 truncl NEW: ISO C 9x
3629 unlockpt NEW: Unix98 PTY
3630 updwtmpx NEW: Unix98
3631 user2netname NEW: Secure RPC
3632 utmpxname NEW: Unix98
3633 versionsort NEW: GNU ext.
3634 versionsort64 NEW: GNU ext.
3636 wcscasecmp NEW: GNU ext.
3637 wcsncasecmp NEW: GNU ext.
3638 wcsnlen NEW: GNU ext.
3639 wcstoimax NEW: ISO C 9x
3640 wcstoll NEW: ISO C 9x
3641 wcstoull NEW: ISO C 9x
3642 wcstoumax NEW: ISO C 9x
3644 wordexp NEW: POSIX.2
3645 wordfree NEW: POSIX.2
3646 write_profiling REMOVED
3647 xdecrypt NEW: Secure RPC
3648 xdr_authdes_cred NEW: Secure RPC
3649 xdr_authdes_verf NEW: Secure RPC
3650 xdr_cryptkeyarg NEW: Secure RPC
3651 xdr_cryptkeyarg2 NEW: Secure RPC
3652 xdr_cryptkeyres NEW: Secure RPC
3653 xdr_getcredres NEW: Secure RPC
3654 xdr_key_netstarg NEW: Secure RPC
3655 xdr_key_netstres NEW: Secure RPC
3656 xdr_keybuf NEW: Secure RPC
3657 xdr_keystatus NEW: Secure RPC
3658 xdr_netnamestr NEW: Secure RPC
3659 xdr_sizeof NEW: Secure RPC
3660 xdr_unixcred NEW: sunrpc ext
3661 xencrypt NEW: Secure RPC
3662 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3673 * inet_ntoa is thread-safe
3675 * updwtmp is moved from libutil to libc
3677 * rewrite of cbrt function
3679 * update of timezone data
3693 * add atoll function
3695 * fix complex problems in Berkeley DB code
3697 * fix math functions
3701 * fixed lots of header problems (especially Linux/GNU specific)
3703 * dynamic loader preserves all registers
3705 * Roland McGrath provided support for handling of auxiliary objects in
3706 the ELF dynamic loader.
3708 * support for parallel builds is improved
3712 * GNU extensions are no longer declared by default. To enable them you
3713 must define the macro `_GNU_SOURCE' in your program or compile with
3716 * The library has changed from using GNU ld symbol aliases to using weak
3717 symbols where available. The ELF object file format supports weak
3718 symbols; GNU ld also supports weak symbols in the a.out format. (There
3719 is also now support for other GNU ld extensions in ELF. Use the
3720 `--with-elf' option to configure to indicate you have ELF, and
3721 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
3722 of many files which contained only symbol aliases, reducing the size of
3723 the source and the compiled library; many other files were renamed to
3724 less cryptic names previously occupied by the symbol alias files.
3725 There is a new header file <elf.h> for programs which operate on
3726 files in the ELF format.
3728 * Converted to Autoconf version 2, so `configure' has more options.
3729 Run `configure --help' to see the details.
3731 * The library can now be configured to build profiling, highly-optimized
3732 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
3733 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
3734 `configure' enable building these extra libraries. The shared library is
3735 built by default when using both ELF and GNU ld. When shared libraries
3736 are enabled, the new library `-ldl' is available for arbitrary run-time
3737 loading of shared objects; its interface is defined in <dlfcn.h>. The
3738 new header file <link.h> gives access to the internals of the run-time
3739 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
3740 application of same name on other systems and it provides information
3741 about dynamically linked binaries.
3743 * The C library now provides the run-time support code for profiling
3744 executables compiled with `-pg'. Programs can control the profiling code
3745 through the interface in <sys/gmon.h>. The `gmon.out' files written by
3746 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
3747 the support for this file format was contributed by David Mosberger-Tang.
3749 * The math code has been replaced with a math library based on fdlibm from
3750 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
3751 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
3752 functions. The math functions now reside in a separate library, so
3753 programs using them will need to use `-lm' their linking commands.
3755 * John C. Bowman contributed optimized ix87 assembler inline functions.
3757 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
3758 mechanism similar to that found in Solaris 2. This is now used for the
3759 group, passwd, hosts, networks, services, protocols, rpc, ethers,
3760 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
3761 file controls what services are used for each individual database. This
3762 works by loading shared libraries with names specified in `nsswitch.conf',
3763 so service modules can be changed or added at any time without even
3764 relinking any program. Currently there are the file, db, and NIS based
3765 NSS services available.
3767 * The new functions `strtoq' and `strtouq' parse integer values from
3768 strings, like `strtol' and `strtoul', but they return `long long int' and
3769 `unsigned long long int' values, respectively (64-bit quantities).
3771 * The new functions `strtof' and `strtold' parse floating-point values from
3772 strings, like `strtod', but they return `float' and `long double' values,
3773 respectively (on some machines `double' and `long double' are the same).
3775 * Ulrich Drepper has contributed new implementations of the floating-point
3776 printing and reading code used in the `printf' family of functions and
3777 `strtod', `strtof', and `strtold'. These new functions are perfectly
3778 accurate, and much faster than the old ones.
3780 * The implementation of the POSIX locale model was completely rewritten by
3781 Ulrich Drepper. This includes the new programs `localedef' and `locale'
3782 to compile the POSIX locale definition.
3784 * The former dummy implementations of the strcoll and strxfrm function are
3785 now replaced by fully functional code contributed by Ulrich Drepper. The
3786 collation information comes from the POSIX locale definitions.
3788 * The new header <langinfo.h> defines an interface for accessing
3789 various locale-dependent data (using the locale chosen with `setlocale').
3791 * Ulrich Drepper has contributed a new suite of functions for operation on
3792 wide-character and multibyte-character strings, in <wchar.h>;
3793 and classification and case conversion of wide characters, in <wctype.h>.
3794 These new functions are conforming to the ISO C, Amendement 1 specification.
3796 * There is now a second implementation of the standard I/O library available.
3797 It comes from GNU libg++ as was written by Per Bothner, heavily modified
3798 by Hongjiu Lu and made thread safe by Ulrich Drepper.
3800 * You can now use positional parameter specifications in format strings
3801 for the `printf' and `scanf' families of functions. For example,
3802 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
3803 ``Number 6, Mr Jones''. This is mainly useful when providing different
3804 format strings for different languages, whose grammars may dictate
3805 different orderings of the values being printed. To support this
3806 feature, the interface for `register_printf_handler' has changed; see
3807 the header file <printf.h> for details.
3809 * The `printf' and `scanf' families of functions now understand a new
3810 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
3811 to group numbers as indicated by the locale; for `scanf' and friends, this
3812 says to accept as valid only a number with all the proper grouping
3813 separators in the right places. In the default "C" locale, numbers are
3814 not grouped; but locales for specific countries will define the usual
3815 conventions (i.e. separate thousands with `,' in the US locale).
3817 * The pgrp functions have been regularized, slightly incompatibly but much
3818 less confusingly. The core functions are now `getpgid' and `setpgid',
3819 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
3820 argument) and BSD `setpgrp' (identical to `setpgid') functions are
3821 provided for compatibility. There is no longer an incompatible `getpgrp'
3822 with an argument declared under _BSD_SOURCE; no BSD code uses it.
3824 * The new header file <fts.h> and suite of functions simplify programs that
3825 operate on directory trees. This code comes from 4.4 BSD.
3827 * The resolver code has been updated from the BIND 4.9.5-P1 release.
3828 Parts of the code were heavily modified by Ulrich Drepper to fit in the
3829 NSS scheme used in glibc.
3831 * There is a new malloc debugging hook `__memalign_hook'.
3833 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
3834 `unsigned int' in <sys/types.h>. These are for compatibility only and
3835 their use is discouraged.
3837 * The `-lmcheck' library to enable standard malloc debugging hooks is now
3838 done differently, so that it works even without GNU ld.
3840 * New function `euidaccess' checks allowed access to a file like `access',
3841 but using the effective IDs instead of the real IDs.
3843 * The time zone data files have been updated for the latest and greatest
3844 local time conventions of the countries of the world.
3846 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
3849 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
3850 for formatting floating-point numbers. They are provided only for
3851 compatibility; new programs should use `sprintf' instead. There are
3852 also equivalent function for the `long double' floating-point type and
3853 all functions also exist in a reentrant form.
3855 * The new auxiliary library `-lutil' from 4.4 BSD contains various
3856 functions for maintaining the login-record files (primarily of use to
3857 system programs such as `login'), and convenient functions for
3858 allocating and initializing a pseudo-terminal (pty) device.
3860 * Ulrich Drepper has contributed new support for System V style
3861 shared memory and IPC on systems that support it.
3863 * Ulrich Drepper has contributed several miscellaneous new functions found
3864 in System V: The `hsearch' family of functions provide an effective
3865 implementation of hash tables; `a64l' and `l64a' provide a very simple
3866 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
3869 * Ulrich Drepper has contributed new reentrant counterparts for the
3870 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
3872 * Ulrich Drepper has contributed new, highly-optimized versions of several
3873 string functions for the i486/Pentium family of processors.
3875 * Ulrich Drepper has updated the Linux-specific code, based largely
3876 on work done in Hongjiu Lu's version of GNU libc for Linux.
3877 The GNU library now supports Linux versions 2.0.10 and later,
3878 using the ELF object file format (i[3456]86-*-linux).
3880 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
3882 * David Mosberger-Tang and Richard Henderson have ported the C library
3883 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
3884 dynamic linking support for ELF/Alpha.
3886 * Richard Henderson contributed several Alpha optimized assembler function
3887 for arithmetic and string handling.
3889 * Ulrich Drepper has contributed a new set of message catalog functions to
3890 support multiple languages using the <libintl.h> interface, for use with
3891 his new package GNU gettext. Translation volunteers have contributed
3892 catalogs of the library's messages in Spanish, German, and Korean.
3894 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
3895 program and the `catgets' function for reading the catalog files it
3896 creates. (The <libintl.h> interface is preferred; we include the
3897 <nl_types.h> interface using `catgets' only for source compatibility with
3898 programs already written to use it.)
3900 * New header file <values.h> gives SVID-compatible names for <limits.h>
3903 * Various new macros, declarations, and small header files for compatibility
3906 * New function `group_member' is a convenient way to check if a process has
3907 a given effective group ID.
3909 * When using GCC 2.7 and later, the socket functions are now declared in a
3910 special way so that passing an argument of type `struct sockaddr_in *',
3911 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
3912 `struct sockaddr *' type, does not generate a type-clash warning.
3914 * New function `error' declared in header file <error.h> is a convenient
3915 function for printing error messages and optionally exiting; this is the
3916 canonical function used in GNU programs. The new functions `err', `warn',
3917 and friends in header file <err.h> are the canonical 4.4 BSD interface for
3918 doing the same thing.
3920 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
3921 POSIX.2 `glob' function to do ~ and {...} expansion.
3923 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
3924 `clearenv' which is used in POSIX.9 is also available.
3926 * New function `getsid' returns session ID number on systems that support it.
3928 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
3929 files <db.h> and <mpool.h> provide a rich set of functions for several
3930 types of simple databases stored in memory and in files, and <ndbm.h> is
3931 an old `ndbm'-compatible interface using the `db' functions. Link with
3932 `-ldb' to get these functions.
3934 * New macro `strdupa' copies a string like `strdup', but uses local stack
3935 space from `alloca' instead of dynamic heap space from `malloc'.
3937 * New function `strnlen' is like `strlen' but searches only a given maximum
3938 number of characters for the null terminator. `stpncpy', `strndup' and
3939 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
3942 * New function `statfs' in header <sys/statfs.h>.
3944 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
3945 provide convenient functions for operating on blocks of null-terminated
3948 * A new suite of functions in <utmp.h> handle all the details of reading
3949 and writing the utmp file.
3951 * An implementation of the NIS/YP(tm) based NSS service was contributed by
3954 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
3955 completely POSIX compliant and also implemented the extended functionality
3956 to handle alternate digit representation and alternate era date formats.
3958 * Ulrich Drepper provided an implementation of the `strptime' function
3959 defined in XPG4.2 which transforms a string into a `struct tm' value.
3961 * Paul Eggert provided the tzselect shell script as part of the timezone
3962 code. The shell script makes it easy to select the correct timezone
3965 * The implementation of the malloc family of functions is completely replaced
3966 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
3967 The implementation uses the mmap function (if available) and it is
3968 optimized for the use in multi threaded programs.
3970 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
3971 functions. This new functionality is usable by specifying a special
3972 salt string and it is compatible with implementation on *BSD systems.
3974 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
3975 `getsubopt' to handle second level command line options, `bsd_signal'
3976 to access BSD style `signal' functionality, the obsolete `regexp' style
3979 * the `lchown' function is available on system which support this
3982 * The implementation of the shadow password handling function was contributed
3985 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
3987 * POSIX.1g support was added. The <sys/select.h> header is available,
3988 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
3989 implementation of `getaddrinfo'.
3993 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
3995 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
3996 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
3998 * The new function `daemon' from 4.4 BSD is useful for server programs that
3999 want to put themselves in the background.
4001 * Joel Sherrill has contributed support for several standalone boards that
4002 run without an operating system.
4004 * `printf', `scanf' and friends now accept a `q' type modifier for long
4005 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
4007 * All of the code taken from BSD (notably most of the math and networking
4008 routines) has been updated from the BSD 4.4-Lite release.
4010 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
4012 * The new functions `getdomainname' and `setdomainname' fetch or change the
4013 YP/NIS domain name. These are system calls which exist on systems which
4016 * The time zone data files have been updated for the latest international
4019 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
4020 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
4024 * The C library now includes support for Sun RPC, from Sun's free
4025 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
4026 are included. (There is still no support for YP.)
4028 * Tom Quinn has contributed a port of the C library to SGI machines running
4029 Irix 4 (mips-sgi-irix4).
4031 * The new `lockf' function is a simplified interface to the locking
4032 facilities of `fcntl', included for compatibility.
4034 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
4036 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
4038 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
4041 * The error message printed by `assert' for a failed assertion now includes
4042 the name of the program (if using GNU ld) and the name of the calling
4043 function (with versions of GCC that support this).
4045 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
4047 * The library now includes the <sys/mman.h> header file and memory
4048 management functions `mmap', `munmap', `mprotect', `msync', and
4049 `madvise', on systems that support those facilities.
4051 * The interface for `mcheck' has changed slightly: the function called to
4052 abort the program when an allocation inconsistency is detected now takes
4053 an argument that indicates the type of failure. The new function
4054 `mprobe' lets you request a consistency check for a particular block at
4055 any time (checks are normally done only when you call `free' or `realloc'
4058 * It is now possible to easily cross-compile the C library, building on one
4059 system a library to run on another machine and/or operating system. All
4060 you need to do is set the variable `HOST_CC' in `configparms' to the
4061 native compiler for programs to run on the machine you are building on (a
4062 few generator programs are used on Unix systems); set `CC' to the
4065 * The new function `fexecve' (only implemented on the GNU system) executes
4066 a program file given a file descriptor already open on the file.
4070 * Brendan Kehoe has contributed most of a port to the DEC Alpha
4071 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
4073 * You can set the variable `libprefix' in `configparms' to specify a prefix
4074 to be prepended to installed library files; this makes it easy to install
4075 the GNU C library to be linked as `-lgnuc' or whatever.
4077 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
4078 copies a limited number of characters from a string, and returns the
4079 address of the last character written.
4081 * You no longer need to check for whether the installed `stddef.h' is
4082 compatible with the GNU C library. configure now checks for you.
4084 * You can now define a per-stream `fileno' function to convert the
4085 stream's cookie into an integral file descriptor.
4087 * ``malloc (0)'' no longer returns a null pointer. Instead, it
4088 allocates zero bytes of storage, and returns a unique pointer which
4089 you can pass to `realloc' or `free'. The behavior is undefined if
4090 you dereference this pointer.
4092 * The C library now runs on Sony NEWS m68k machines running either
4093 NewsOS 3 or NewsOS 4.
4095 * The new `syscall' function is a system-dependent primitive function
4096 for invoking system calls. It has the canonical behavior on Unix
4097 systems, including unreliable return values for some calls (such as
4098 `pipe', `fork' and `getppid').
4100 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
4101 to `EAGAIN', which is the preferred name. On systems whose kernels
4102 use two distinct codes, the C library now translates EWOULDBLOCK to
4103 EAGAIN in every system call function.
4107 * The GNU C Library Reference Manual is now distributed with the library.
4108 `make dvi' will produce a DVI file of the printed manual.
4109 `make info' will produce Info files that you can read on line using C-h i
4110 in Emacs or the `info' program.
4111 Please send comments on the manual to bug-glibc-manual@gnu.org.
4113 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
4115 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
4117 * Jason Merrill has contributed a port to the Sequent Symmetry running
4118 Dynix version 3 (i386-sequent-dynix).
4120 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
4121 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
4123 * New function `memory_warnings' lets you arrange to get warnings when
4124 malloc is running out of memory to allocate, like Emacs gives you.
4126 * The C library now contains the relocating allocator used in Emacs 19 for
4127 its editing buffers. This allocator (ralloc) minimizes allocation
4128 overhead and fragmentation by moving allocated regions around whenever it
4129 needs to. You always refer to a ralloc'd region with a "handle" (a
4130 pointer to a pointer--an object of type `void **').
4132 * There is a new `printf' format: `%m' gives you the string corresponding
4133 to the error code in `errno'.
4135 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
4136 or `%[' conversion, but instead of filling in a fixed-sized buffer you
4137 pass, the `a' modifier says to fill in a `char **' you pass with a
4140 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
4141 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
4142 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
4144 * `mkstemp' is a traditional Unix function to atomically create and open a
4145 uniquely-named temporary file.
4149 * The standard location for the file that says what the local timezone is
4150 has changed again. It is now `/usr/local/etc/localtime' (or more
4151 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
4153 * The distribution no longer contains any files with names longer than 14
4156 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
4157 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
4159 * New functions `ttyslot' and `syslog' from 4.4 BSD.
4163 * The configuration process has changed quite a bit. The `configure'
4164 script is now used just like the configuration scripts for other GNU
4165 packages. The `sysdeps' directory hierarchy is much rearranged.
4166 The file `INSTALL' explains the new scheme in detail.
4168 * The header files no longer need to be processed into ANSI C and
4169 traditional C versions. There is just one set of files to install, and
4170 it will work with ANSI or old C compilers (including `gcc -traditional').
4172 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
4173 MIPS DECStation running Ultrix 4.
4175 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
4176 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
4177 made itself into a shared library.
4179 * Yet further improved support for the i386, running 4.3 BSD-like systems
4180 (such as Mach 3 with the Unix single-server), or System V.
4182 * New function `strncasecmp' to do case-insensitive string comparison
4183 with limited length.
4185 * New function `strsep' is a reentrant alternative to `strtok'.
4187 * New functions `scandir' and `alphasort' for searching directories.
4189 * New function `setenv' is a better interface to `putenv'.
4191 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
4192 function for traversing a directory tree.
4194 * The GNU obstack package is now also part of the C library.
4195 The new function `open_obstack_stream' creates a stdio stream that
4196 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
4197 formatted output directly to an obstack.
4199 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
4200 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
4202 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
4204 * The new functions `strfry' and `memfrob' do mysterious and wonderful
4205 things to your strings.
4207 * There are some new test programs: test-fseek, testmb, and testrand.
4209 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
4210 These ports are not finished, but are a good starting place for really
4211 supporting those systems.
4213 * `/etc/localtime' is now the standard location for the file that says what
4214 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
4215 This follows the general principle that `/etc' is the place for all local
4216 configuration files.
4218 * The C library header files now use `extern "C"' when used by the C++
4219 compiler, so the C library should now work with C++ code.
4221 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
4222 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
4225 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
4226 function which uses the `merge sort' algorithm, and is said to be
4227 significantly faster than the old GNU `qsort' function. Merge sort is
4228 now the standard `qsort' function. The new algorithm can require a lot
4229 of temporary storage; so, the old sorting function is called when the
4230 required storage is not available.
4232 * The C library now includes Michael Glad's Ultra Fast Crypt, which
4233 provides the Unix `crypt' function, plus some other entry points.
4235 * The code and header files taken from 4.4 BSD have been updated with the
4236 latest files released from Berkeley.
4238 ----------------------------------------------------------------------
4239 Copyright information:
4241 Copyright (C) 1992-2017 Free Software Foundation, Inc.
4243 Permission is granted to anyone to make or distribute verbatim copies
4244 of this document as received, in any medium, provided that the
4245 copyright notice and this permission notice are preserved,
4246 thus giving the recipient permission to redistribute in turn.
4248 Permission is granted to distribute modified versions
4249 of this document, or of portions of it,
4250 under the above conditions, provided also that they
4251 carry prominent notices stating who last changed them.
4254 version-control: never