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1 GNU C Library NEWS -- history of user-visible changes. 2011-10-20
2 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.15
10 * The following bugs are resolved with this release:
12 6779, 6783, 9696, 11589, 12403, 12847, 12868, 12852, 12874, 12885, 12892,
13 12907, 12922, 12935, 13007, 13021, 13067, 13068, 13090, 13092, 13114,
14 13118, 13123, 13134, 13138, 13150, 13179, 13192, 13268, 13291
16 * New program pldd to list loaded object of a process
17 Implemented by Ulrich Drepper.
19 * Add nss_db support back to glibc. No more dependency on Berkeley db
20 and support for initgroups lookups.
21 Implemented by Ulrich Drepper.
23 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
24 Contributed by HJ Lu.
26 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
27 Contributed by HJ Lu.
29 * Optimized strcat and strncat on x86-64 and optimized wcscmp on x86-32 and
30 x86-64.
31 Contributed by Liubov Dmitrieva.
33 * Optimized strchr and strrchr for SSE on x86-32.
34 Contributed by Liubov Dmitrieva.
36 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp for x86-64 and x86-32.
37 Contributed by Liubov Dmitrieva.
39 * New interfaces: scandirat, scandirat64
40 Implemented by Ulrich Drepper.
42 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
43 Implemented by Ulrich Drepper.
45 * nscd now also caches the netgroup database.
46 Implemented by Ulrich Drepper.
48 * Integrate libm with gcc's -ffinite-math-only option.
49 Implemented by Ulrich Drepper.
51 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
52 to math functions. Implemented by Ulrich Drepper.
54 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
55 Implemented by Ulrich Drepper.
56 \f
57 Version 2.14
59 * The following bugs are resolved with this release:
61 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
62 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
63 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
64 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
65 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
66 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
67 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
68 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
69 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
70 12795, 12811, 12813, 12814, 12841
72 * The RPC implementation in libc is obsoleted. Old programs keep working
73 but new programs cannot be linked with the routines in libc anymore.
74 Programs in need of RPC functionality must be linked against TI-RPC.
75 The TI-RPC implementation is IPv6 enabled and there are other benefits.
77 Visible changes of this change include (obviously) the inability to link
78 programs using RPC functions without referencing the TI-RPC library and the
79 removal of the RPC headers from the glibc headers.
80 Implemented by Ulrich Drepper.
82 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
83 syncfs, setns, sendmmsg
85 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
86 yue_HK, lij_IT, mhr_RU
88 * New encodings: CP770, CP771, CP772, CP773, CP774
90 * New program sotruss to trace calls through PLTs
91 Implemented by Ulrich Drepper.
93 * The malloc hook implementation is marked deprecated and will be removed
94 from the default implementation in the next version. The design never
95 worked ever since the introduction of threads. Even programs which do
96 not create threads themselves can use multiple threads created internally.
97 \f
98 Version 2.13
100 * The following bugs are resolved with this release:
102 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
103 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
104 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
105 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
106 12378, 12394, 12397
108 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
110 * POWER7 optimizations: memset, memcmp, strncmp
112 * New optimized string functions for x86-64: strnlen (SSE2),
113 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
114 Implemented by Ulrich Drepper.
115 \f
116 Version 2.12
118 * The following bugs are resolved with this release:
120 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
121 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
122 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
123 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
124 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
125 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
126 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
127 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
129 * New interfaces: pthread_getname_np, pthread_setname_np
131 * New Linux interface: recvmmsg
133 * STT_GNU_IFUNC implemented for Sparc by David Miller.
135 * The dynamic linker now recognizes supported ABI versions from the
136 EI_ABIVERSION field in the ELF header.
137 Implemented by Ulrich Drepper.
139 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
140 will not be used to fill in password fields in the passwd.byname replies.
141 Instead it is used to synthesize the shadow.byname table, should it be
142 missing. This is a useful mode in some installations involving Solaris.
143 Implemented by Ulrich Drepper.
145 * New locales: kok_IN, sq_MK, cv_RU
146 \f
147 Version 2.11
149 * The following bugs are resolved with this release:
151 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
152 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
153 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
154 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
155 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
156 10789, 10817, 10823, 10840, 10847
158 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
159 mkostemps64
160 Implemented by Ulrich Drepper.
162 * Checking version of longjmp added that fails if an uninitialized stack
163 frame would be created. Implemented by Ulrich Drepper.
165 * STT_GNU_IFUNC is now supported in static executables.
166 Implemented by H.J. Lu.
168 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
170 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
171 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
172 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
173 Contributed by H.J. Lu.
175 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
176 Implemented by Ulrich Drepper.
178 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
179 strstr, strcasestr.
180 Contributed by H.J. Lu.
182 * Support for fma instruction in AVX on x86-64.
183 Implemented by H.J. Lu and Ulrich Drepper.
185 * AVX support in x86-64 auditing support in ld.so.
186 Implemented by H.J. Lu.
188 * STB_GNU_UNIQUE support added.
189 Implemented by Ulrich Drepper.
191 * Implement second fallback mode for optimized DNS lookup for even more
192 broken environments. If two requests from the same port are not
193 handled correctly close the socket and open a new one before sending
194 the second request. The 'single-request-reopen' option in /etc/resolv.conf
195 can be used to select this mode right away, instead of rediscovering the
196 necessity is every process again.
197 Implemented by Ulrich Drepper.
199 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
200 Implemented by Adam Tkac.
202 * Optimized iconv conversions for S390x.
203 Implemented by Andreas Krebbel.
205 * Using condvars with PI mutexes is now more efficient due to kernel
206 support for requeueing to PI futexes. NPTL support added for x86-64.
207 Implemented by Ulrich Drepper.
209 * New locales: ps_AF, my_MM
210 \f
211 Version 2.10
213 * The following bugs are resolved with this release:
215 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
216 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
217 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
218 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
219 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
221 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
222 Implemented by Ulrich Drepper.
224 * New Linux interfaces: accept4, fallocate, fallocate64.
225 Implemented by Ulrich Drepper.
227 * Correct declarations of string function when used in C++ code. This
228 could lead to compile errors for invalid C++ code.
230 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
231 now in POSIX.
233 * New POSIX 2008 interface: psiginfo
234 Implemented by Ulrich Drepper.
236 * New ISO C++1x interfaces: quick_exit, at_quick_exit
237 Implemented by Ulrich Drepper.
239 * Support for selecting between multiple function definitions at runtime
240 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
242 * The libcrypt library can now use the hash function implementations in
243 NSS. Implemented by Ulrich Drepper.
245 * The malloc implementation can be compiled to be less memory efficient
246 but higher performing in multi-threaded programs.
247 Implemented by Ulrich Drepper.
249 * New locales: nan_TW@latin, ks_IN
251 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
252 Implemented by Ulrich Drepper.
254 * Extended printf hook support. It is possible to use user-defined types
255 and extend existing format specifiers.
256 Implemented by Ulrich Drepper.
258 * Handling for group shadow files has been added.
259 Implemented by Ulrich Drepper.
261 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
262 servers (the case, e.g., for some people using the built-in DNS
263 server in ADSL modems/routers). There is a once-per-process timeout
264 in case of a broken server. To avoid it, users can run nscd or put
265 'options single-request' in /etc/resolv.conf.
266 Implemented by Ulrich Drepper.
267 \f
268 Version 2.9
270 * The following bugs are resolved with this release:
272 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
273 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
274 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
275 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
276 6968, 6974, 6980, 6995, 7008, 7009, 7029
278 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
279 up at the same time. Implemented by Ulrich Drepper.
281 * TLS descriptors for LD and GD on x86 and x86-64.
282 Implemented by Alexandre Oliva.
284 * getaddrinfo now handles DCCP and UDPlite.
285 Implemented by Ulrich Drepper.
287 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
288 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
289 Implemented by Ulrich Drepper.
291 * New implementation of memmem, strstr, and strcasestr which is O(n).
292 Implemented by Eric Blake.
294 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
296 * Implement "e" option for popen to open file descriptor with the
297 close-on-exec flag set. Implemented by Ulrich Drepper.
299 * Implement "b" mode for fmemopen. In this mode writes writes don't
300 implicitly add a NUL byte and seeks from the end of the buffer really
301 use the buffer end, not the string length as the basis.
302 Implemented by Ulrich Drepper.
304 * Many functions, exported and internal, now atomically set the close-on-exec
305 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
307 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
308 Sinhala)
309 Implemented by Pravin Satpute.
311 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
312 \f
313 Version 2.8
315 * The following bugs are resolved with this release:
317 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
318 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
319 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
320 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
321 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
322 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
323 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
325 * New locales: bo_CN, bo_IN, shs_CA.
327 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
329 * Sorting rules for some Indian languages (Devanagari and Gujarati).
330 Implemented by Pravin Satpute.
332 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
334 * nscd caches now all timeouts for DNS entries
335 Implemented by Ulrich Drepper.
337 * nscd is more efficient and wakes up less often.
338 Implemented by Ulrich Drepper.
340 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
341 vdprintf, and obstack_vprintf.
342 Implemented by Jakub Jelinek.
344 * Faster memset for x86-64.
345 Implemented by Harsha Jagasia and H.J. Lu.
347 * Faster memcpy on x86.
348 Implemented by Ulrich Drepper.
350 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
351 Implemented by Ulrich Drepper.
353 * Faster sqrt and sqrtf implemention for some PPC variants.
354 Implemented by Stephen Munroe.
355 \f
356 Version 2.7
358 * The following bugs are resolved with this release:
360 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
361 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
362 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
363 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
364 5071, 5103, 5104, 5112, 5113, 5184, 5186
366 * More checking functions: fread, fread_unlocked, open*, mq_open.
367 Implemented by Jakub Jelinek and Ulrich Drepper.
369 * Extend fortification to C++. Implemented by Jakub Jelinek.
371 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
372 by not recognizing 'a' as a modifier when those specs are requested.
373 Implemented by Jakub Jelinek.
375 * PPC optimizations to math and string functions.
376 Implemented by Steven Munroe.
378 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
379 options to be passed. Implemented by Ulrich Drepper.
381 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
383 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
384 Implemented by Ulrich Drepper.
386 * Handle private futexes in the NPTL implementation.
387 Implemented by Jakub Jelinek and Ulrich Drepper.
389 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
390 Implemented by Roland McGrath and Ulrich Drepper.
392 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
394 * SHA-256 and SHA-512 based password encryption.
395 Implemented by Ulrich Drepper.
397 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
398 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
399 yo_NG.
401 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
402 Implemented by Ulrich Drepper.
403 \f
404 Version 2.6
406 * The following bugs are resolved with this release:
408 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
409 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
410 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
411 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
412 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
413 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
414 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
415 4702, 4858
417 * New Linux interfaces: epoll_pwait, sched_getcpu.
419 * New generic interfaces: strerror_l.
421 * nscd can now cache the services database. Implemented by Ulrich Drepper.
422 \f
423 Version 2.5
425 * The following bugs are resolved with this release:
427 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
428 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
429 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
430 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
431 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
432 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
433 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
434 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
435 3225, 3251, 3252, 3253, 3273
437 * For Linux, the sorting of addresses returned by getaddrinfo now also
438 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
439 Implemented by Ulrich Drepper.
441 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
442 Implemented by Ulrich Drepper.
444 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
446 * New iconv module for MIK. Contributed by Alexander Shopov.
448 * For sites with broken group and/or passwd database, the auto-propagate
449 option of nscd can prevent creating ID lookup entries from the results
450 of a name lookup and vice versa. This usually is no problem but some
451 site might have problems with the default behavior.
452 Implemented by Ulrich Drepper.
454 * Iterating over entire database in NIS can be slow. With the
455 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
456 to trade time for memory. The entire database will be read at once.
457 Implemented by Ulrich Drepper.
459 * The interfaces introduced in RFC 3542 have been implemented by
460 Ulrich Drepper.
462 * Support for the new ELF hash table format was added by Ulrich Drepper.
464 * Support for priority inheritance mutexes added by Jakub Jelinek and
465 Ulrich Drepper.
467 * Support for priority protected mutexes added by Jakub Jelinek.
469 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
470 or_IN, csb_PL, fy_NL, sr_ME.
471 \f
472 Version 2.4
474 * More overflow detection functions.
476 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
477 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
479 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
480 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
481 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
482 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
483 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
484 by Masahide Washizawa.
486 * It is now possible to install audit libraries for the dynamic linker using
487 LD_AUDIT. Implemented by Ulrich Drepper.
489 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
490 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
491 For a libc and libpthread that works well on Linux 2.4 kernels, we
492 recommend using the stable 2.3 branch.
494 * The new function open_wmemstream acts like open_memstream,
495 but uses a wchar_t wide character buffer.
497 * The new function ppoll is an improved version of poll, similar to pselect.
499 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
500 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
501 renameat, unlinkat, linkat, symlinkat, readlinkat.
503 * New Linux kernel system calls: unshare,
504 inotify_init, inotify_add_watch, inotify_rm_watch.
506 * The euidaccess function is now also known by the alias eaccess,
507 for compatibility with some other systems.
509 * Timezone data updated to 2006b version.
510 \f
511 Version 2.3.6
513 * The following bugs are resolved with this release:
515 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
516 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
517 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
518 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
519 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
520 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
522 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
524 * As of this release, GCC 4 can be used to compile the C Library.
526 * Timezone data updated to 2005m version.
527 \f
528 Version 2.3.5
530 * The following bugs are resolved with this release:
532 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
533 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
534 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
535 777, 787, 821, 822, 823, 825
537 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
538 \f
539 Version 2.3.4
541 * Support for RFC 3678. Real implementations exist only for Linux so far.
542 Implemented by Ulrich Drepper.
544 * nscd can now cache entries persistently. Expiring entries are reloaded.
545 For speedups the cache can be shared in memory with client processes.
546 Implemented by Ulrich Drepper.
548 * nscd can now perform SELinux checks.
549 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
551 * getaddrinfo queries are now cached. Canonical name lookup is performed
552 efficiently.
553 Implemented by Ulrich Drepper.
555 * The nothrow function attribute is used when headers are used by gcc when
556 compiling C code. This can avoid significant amounts of exception
557 handling data.
559 * The malloc functions perform more error checking and are stricter when
560 it comes to reacting on errors. The default action is to terminate
561 the process after showing an error message. Implemented by Ulrich Drepper.
563 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
564 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
566 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
567 namespaces using the new function dlmopen(). This feature is of course,
568 like most other dynamic loading functionality, not available in statically
569 linked applications. Implemented by Ulrich Drepper.
571 * Low-overhead boundary checking variants of string and some stdio functions
572 were added. These are to be used in conjunction with a gcc patch by
573 Jakub Jelinek which adds calls to these functions if possible.
574 Implemented by Jakub Jelinek and Ulrich Drepper.
576 * Old code for several operating systems and machine architectures that
577 have not been in working condition in a long time have been removed from
578 the main source tree maintained by the GNU C Library's maintainers.
579 These files are now reside in the separate `ports' source module
580 that is usable as an add-on when building the library.
581 \f
582 Version 2.3.3
584 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
585 interrogate the dynamic linker, compatible with the Solaris interface.
587 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
588 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
590 * getifaddrs now uses the netlink interface on Linux to get its information.
591 Implemented by Thorsten Kukuk.
593 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
594 Implemented by Ulrich Drepper.
596 * support for non-executable stacks on x86 has been added. Changes mostly
597 by Roland McGrath.
599 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
600 and Ulrich Drepper.
602 * getaddrinfo now performs destination address selection according to
603 RFC 3484.
604 \f
605 Version 2.3.2
607 * Thread-safe interfaces for many functions that access locale data
608 were added in version 2.3, but these features were omitted from NEWS.
609 Many functions have variants with an `_l' suffix that take a `locale_t'
610 object as a parameter rather than consulting the current locale.
611 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
612 create and maintain `locale_t' objects. Additionally, the new function
613 `uselocale' sets "the current locale" (as used by functions not so
614 parameterized) set for an individual thread. These features were added
615 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
617 * The functions getresuid, getresgid, setresuid, and setresgid, which
618 have long been available on Linux, are now declared in <unistd.h>
619 and are now also available on the Hurd.
621 * ELF thread-local storage support (TLS) now works on x86-64.
623 * The new dynamic string token $LIB is expanded in shared library names.
624 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
626 * Aldy Hernandez contributed complete software floating point support for
627 PowerPC machines with no FPU.
629 * fexecve is implemented on Linux.
631 * The `btowc' function should work at least twice as fast due to
632 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
634 * With approriate thread add-ons cancelable functions are now implemented
635 in libc.so as well. No need to call the function in libpthread. This
636 change allowed to finally disable the incorrect and expensive handling
637 of weak definition in ld.so.
639 * Yet more PLT entries in libc.so have been removed. We finally arrived
640 at the bare minimum. Startup times improved appropriately.
642 * Support for the new Linux/x86 system call interface was added. The
643 AT_SYSINFO auxiliary vector entry is recognized and handled.
644 \f
645 Version 2.3
647 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
648 charsets.
650 * iconv (the program and the interface) now accepts empty names (excluding
651 options like //TRANSLIT) to mean "use charset of current locale".
653 * localedef can now transliterate characters in strings which are not in
654 the provided charmap. The information from the input locale is used.
656 * Prelinking support was added for ELF targets. This requires additional
657 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
659 * Read-only stdio streams now use mmap to speed up operation by eliminating
660 copying and buffer underflows. To use add 'm' to the mode string of
661 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
663 * The malloc functions were completely rewritten by Wolfram Gloger based
664 on Doug Lea's malloc-2.7.0.c.
666 * Isamu Hasegawa contributed a completely new and POSIX-conformant
667 implementation of regex.
669 * Bruno Haible upgraded the iconv and locale implementation to support
670 Unicode 3.2.
672 * Contents of the LC_* and LANG environment variables in the CEN style are
673 not recognized anymore. It never was used. Change by Ulrich Drepper.
675 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
676 thread-local storage (TLS) ABI on some platforms.
677 Changes by Ulrich Drepper. SH support by Kaz Kojima.
679 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
680 EUC-JISX0213, and TSCII.
682 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
683 BSD-compatible interface for getting all network interface addresses.
684 Implementation for IPv4 by Roland McGrath.
686 * Loading of locale data is faster due to the introduction of a locale
687 archive. Implemented by Roland McGrath and Ulrich Drepper.
689 * Startup times are significantly reduced by not using exported functions
690 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
691 and Ulrich Drepper.
693 * Steven Munroe contributed a port to PowerPC64/Linux.
694 \f
695 Version 2.2.6
697 * The Hurd now uses the GNU libio implementation of stdio rather than the
698 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
700 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
701 with the same behavior as the Linux system call of the same name.
702 \f
703 Version 2.2.5
705 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
706 128-bit long double format.
708 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
709 IBM1161, and IBM1162 charsets.
711 * Andreas Jaeger contributed a port to x86-64/Linux.
713 * Peter Bruin contributed a port to PowerPC/Hurd.
715 * libc functions using I/O streams now can handle wide-oriented streams
716 as well.
718 * optimizations in the dynamic linker. Binaries created by recent binutils
719 versions start up quicker due to reduced time spent on relocations.
721 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
722 \f
723 Version 2.2.4
725 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
726 asinh, atanh, j0 for the 128-bit long double format.
728 * Bruno Haible updated all the code handling Unicode in some form to
729 support Unicode 3.1.
731 * Speed of regex for single-byte locales is back to previous levels.
732 Patch by Isamu Hasegawa.
734 * Alpha, SPARC, and IA-64 now also using floating stacks.
736 * Startup time of internationalized applications greatly improved through
737 iconv cache. Use iconvconfig to generate the cache file.
738 Contributed by Ulrich Drepper.
740 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
741 severe performance problems. Patch by David Mosberger.
743 * The Hurd port got a lot more functionality like AIO, various stdio
744 extensions, etc. Mainly done by Roland McGrath.
746 * mtrace can now lookup symbols in shared libraries.
747 \f
748 Version 2.2.3
750 * Intel's IA-64 math library is largely integrated. It provides fast and
751 accurate implementatations for most basic and standard math functions
752 in float, double, and long double format.
754 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
755 and asin for the 96-bit long double format and asin, log, tan for the
756 128-bit long double format.
758 * The beginning of a last-bit accurate math library by IBM Haifa were added.
759 The basic double functions exist today. Contributed by Abraham Ziv
760 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
761 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
763 * An asynchronous name lookup library was added. The interface is designed
764 after POSIX AIO. The proposal was circulated beforehand to get comments.
765 No negative ones came in. Implemented by Ulrich Drepper.
767 * Port to S390/64bit contributed by Martin Schwidefsky
768 <schwidefsky@de.ibm.com>.
770 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
771 of functions for Linux/IA-64.
773 * The RPC code is now thread safe. Threads can now use the same service
774 of different services at the same time. Patch by Eric Norum
775 <eric.norum@usask.ca> with some help by Ulrich Drepper.
777 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
778 family of functions for Linux/S390.
780 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
781 of functions for Linux/x86.
783 * Port to Linux/CRIS contributed by Axis Communications.
784 \f
785 Version 2.2.2
787 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
788 we can now check for namespace violations and missing declarations. The
789 result is that almost all headers are now Unix-compliant (as defined in
790 the upcoming XPG6). The negative side is that some programs might need
791 corrections, too, if they depend on the incorrect form of the headers in
792 previous versions which defined too many symbols and included too many
793 other headers.
795 * regex now handles multibyte character sets correctly.
796 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
798 * iconv (the program) does now conform to the upcoming XPG6 and handles
799 charmaps. Instead of the charset names the path of charmaps can be
800 provided and the conversion happens based on this data.
801 Contributed by Ulrich Drepper.
803 * The locale program now provides detailed information about the installed
804 locales. While
806 locale -a
808 only lists the names of the supported locales
810 locale -a --verbose
812 provides details such as country, language, and codeset name.
813 Contributed by Ulrich Drepper.
814 \f
815 Version 2.2.1
817 * The gencat program now parses the input file according to the charset
818 selected by the LC_CTYPE category. This is important for stateful
819 character sets. To make generating catalogs easier there is a way
820 to overwrite the charset selected by the locale: before the first
821 message or $ quote line the catalog can contain a line like
823 $ codeset=ISO-8859-2
825 to select the charset (ISO-8859-2 in this case).
827 Implemented by Shinya Hanataka and Ulrich Drepper.
829 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
830 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
831 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
833 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
834 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
836 * The LANGUAGE environment variable is now ignored unless the locale is
837 changed from the default "C" locale.
839 * The usual bug fixes.
840 \f
841 Version 2.2
843 * Greg McGary added runtime support for bounds checking using gcc's
844 new -fbounded-pointers option. ix86 target is complete. PowerPC
845 is in progress.
847 * Thorsten Kukuk added secure mode support to nscd.
849 * The Berkeley db libraries have been removed.
851 Related, the nss_db module is now in a separate package since it
852 obviously requires a database library being available.
854 * Wide character I/O streams implemented by Ulrich Drepper.
856 * Functions from the extended socket API added by Ulrich Drepper.
858 * Functions feenableexcept and fedisableexcept to control the
859 behaviour of individual exceptions have been added by Andreas Jaeger.
861 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
863 * The resolver code has been updated from bind 8.2.3-T5B which supports
864 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
865 and Mark Kettenis.
867 This change could in some situations effect backward compatibility. Since
868 now `_res' is a thread-local instead of a global variable, modifying it
869 in one thread does not have any effect in other threads.
871 The resolver library was also extended to allow IPv6 as the transport
872 protocol for the requests. This work was done by Stig Venaas.
874 * Compatibility code for K&R C compilers has been removed from the
875 header files. A ISO C compiler is needed to use the library
876 (conforming to either C89 or C99 standard).
878 * Complete rewrite of the localedef program to support multibyte character
879 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
880 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
881 Implemented by Ulrich Drepper.
883 Bruno Haible significantly improved the generation and use of the data
884 structures for the wide character tables.
886 * Plural handling in gettext implemented by Ulrich Drepper.
888 * The utmp daemon has been removed.
890 * The port to MIPS-Linux has been finished by Andreas Jaeger.
892 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
893 and Yutaka Niibe.
895 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
897 * POSIX barriers implemented by Kaz Kylheku.
899 * POSIX spawn function family implemented by Ulrich Drepper.
901 * POSIX spinlocks are now available.
903 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
905 * the configure option --enable-kernel=X.Y.Z allows to strip out
906 compatibility for kernel versions before X.Y.Z. This is currently only
907 implemented for Linux.
909 * the sockaddr_in6 structure changed. The IPv6 working group added a new
910 field sin6_scope_id. This means that all programs using IPv6 should be
911 recompiled. Don't expect binary compatibility with previous glibc
912 versions.
914 * various conversion modules for IBM character sets contributed by
915 Masahide Washizawa.
917 * IA-64 port by Jes Sorensen and HJ Lu.
919 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
920 Compiling the GNU C Library for Linux/ia64
921 ******************************************
923 Please refer to the file INSTALL in the same directory as you found
924 this file for general information about configuring and compiling
925 glibc.
927 For general inquiries about glibc under Linux/ia64 please use the
928 following mailing list linux-ia64@linuxia64.org or one of the relevant
929 glibc mailing lists.
931 Recommended Tools for Compilation
932 =================================
934 In order for glibc-2.2 to build correctly on the ia64 you need at
935 least the following versions of the GNU tools (the :
937 * The Cygnus toolchain snapshot for the ia64 as of August 4
938 including the provided set of patches. It is however recommend
939 you use the October 24 toolchain snapshot or a more recent version.
941 OR alternatively you can try the following (the Cygnus toolchain is
942 the recommended solution):
944 * GCC and binutils, GAS and GNU LD out of CVS from
945 sources.redhat.com as of August 28, 2000 or later. The CVS tree
946 may require special patches to work properly on the ia64.
948 Configuring and compiling GNU Libc for Linux/ia64
949 =================================================
951 The library requires Linux kernel version 2.4.0-test4-000728 or
952 later to funtion properly. Besides that it support for debug libraries
953 is currently untested. Hence the following options
954 are required for configuring the library:
956 --disable-debug --enable-kernel=2.4.0
958 It is also important that you make sure the library picks up the
959 appropriate kernel header files, if you do not have recent enough
960 kernel headers in /usr/src/linux/include, you should use the
961 --with-headers=<path> option to specify the location.
963 As an example I personally use the following options to configure
964 the library:
966 --disable-debug
967 --disable-cvs
968 --enable-kernel=2.4.0
969 --host=ia64-linux
970 --enable-add-ons=yes
971 --prefix=/usr
972 --with-headers=/home/jes/linux/include
975 Good luck
977 Jes Sorensen <jes@linuxcare.com>,
978 November 14th, 2000
979 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
980 \f
981 Version 2.1.3
983 * bug fixes
985 \f
986 Version 2.1.2
988 * bug fixes
990 \f
991 Version 2.1.1
993 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
995 * New xdr functions are added; some rpc functions are now 64bit clean.
997 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
999 * Fixed known incompatibilities with glibc 2.0.
1001 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1003 * Optimized a number of functions (especially the ELF dynamic loader).
1005 * Update timezone data files.
1007 * lots of charmaps corrections
1009 * some new locale definitions and charmaps
1011 \f
1012 Version 2.1
1014 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1015 conform to POSIX member type requirements. Symbol versions have been
1016 adjusted as needed within the library, and for direct use by applications,
1017 but there is potential for problems if third-party libraries use
1018 struct timeval as part of their interface. This does not present
1019 a problem for X and other "essential" system libraries.
1021 * An additional locale model to support C++ Standard Library locale
1022 model and probably more was implemented by Ulrich Drepper.
1024 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1025 symbol level.
1027 * Miles Bader provided the `argp' function family to support hierachical
1028 command line argument parsing, layered on top of getopt.
1030 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1032 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1033 numbers.
1035 * scanf recognizes the %a and %A format for scanning floating point numbers.
1037 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1038 information and interfaces for the available integer types.
1040 * about 130 new math functions were added to implement the ISO C9x math
1041 library.
1043 * the new header <complex.h> contains definitions of the complex math
1044 functions from ISO C 9X.
1046 * the new header <tgmath.h> defines generic macros to use complex or
1047 real valued functions.
1049 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1051 * Andreas Jaeger provided a test suite for the math library.
1053 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1055 * Ulrich Drepper added character set conversion functions (iconv).
1057 * Optimized string functions have been added.
1059 * The localedata addon is now part of glibc.
1061 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1063 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1064 daemon for NSS (nscd).
1066 Missing a better place here are some numbers on improvements. Under
1067 Linux 2.1.125 un-tar-ing the kernel sources takes
1069 user system wall
1071 using local files 12.19s 6.88s 22.91s
1073 using NIS 13.92s 8.91s 26.34s
1075 using NIS & nscd 10.37s 7.34s 25.30s
1077 using NIS+ 27.57s 30.37s 640.46s
1079 using NIS+ & nscd 10.25s 7.83s 26.51s
1081 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1083 Keep in mind that non-namelookup related operations dominate above times.
1084 It was just a common complain that using NIS+ unpacking the kernel is
1085 horribly slow.
1087 [1] The old nscd implementation is not available anymore since it was
1088 distributed with glibc up to version 2.0.98 and thus is now replaced.
1090 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1092 * Mark Kettenis provided a Hesiod NSS module.
1094 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1095 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1097 * rcmd can now handle netgroups (Dick Streefland).
1099 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1100 Bambrough.
1102 * Support for the IPv6 protocol has been added to the socket API, as per the
1103 latest draft standards.
1105 * Support for Linux 2.2 has been added.
1107 * Interface changes relative to the latest 2.0.x release:
1108 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1109 addseverity NEW: Unix98
1110 alphasort64 NEW: LFS
1111 argp_err_exit_status NEW: argp, GNU ext
1112 argp_error NEW: argp, GNU ext
1113 argp_failure NEW: argp, GNU ext
1114 argp_help NEW: argp, GNU ext
1115 argp_parse NEW: argp, GNU ext
1116 argp_program_bug_address NEW: argp, GNU ext
1117 argp_program_version NEW: argp, GNU ext
1118 argp_program_version_hook NEW: argp, GNU ext
1119 argp_state_help NEW: argp, GNU ext
1120 argp_usage NEW: argp, GNU ext
1121 authdes_create NEW: Secure RPC
1122 authdes_getucred NEW: Secure RPC
1123 authdes_pk_create NEW: Secure RPC
1124 backtrace NEW: GNU ext.
1125 backtrace_symbols NEW: GNU ext.
1126 backtrace_symbols_fd NEW: GNU ext.
1127 cacos NEW: ISO C 9x
1128 cacosf NEW: ISO C 9x
1129 cacosh NEW: ISO C 9x
1130 cacoshf NEW: ISO C 9x
1131 cacoshl NEW: ISO C 9x
1132 cacosl NEW: ISO C 9x
1133 capget NEW: kernel
1134 capset NEW: kernel
1135 carg NEW: ISO C 9x
1136 cargf NEW: ISO C 9x
1137 cargl NEW: ISO C 9x
1138 casin NEW: ISO C 9x
1139 casinf NEW: ISO C 9x
1140 casinh NEW: ISO C 9x
1141 casinhf NEW: ISO C 9x
1142 casinhl NEW: ISO C 9x
1143 casinl NEW: ISO C 9x
1144 catan NEW: ISO C 9x
1145 catanf NEW: ISO C 9x
1146 catanh NEW: ISO C 9x
1147 catanhf NEW: ISO C 9x
1148 catanhl NEW: ISO C 9x
1149 catanl NEW: ISO C 9x
1150 cbc_crypt NEW: Secure RPC
1151 ccos NEW: ISO C 9x
1152 ccosf NEW: ISO C 9x
1153 ccosh NEW: ISO C 9x
1154 ccoshf NEW: ISO C 9x
1155 ccoshl NEW: ISO C 9x
1156 ccosl NEW: ISO C 9x
1157 cexp NEW: ISO C 9x
1158 cexpf NEW: ISO C 9x
1159 cexpl NEW: ISO C 9x
1160 cimag NEW: ISO C 9x
1161 cimagf NEW: ISO C 9x
1162 cimagl NEW: ISO C 9x
1163 clearerr_locked REMOVED
1164 clntunix_create NEW: sunrpc ext
1165 clog NEW: ISO C 9x
1166 clog10 NEW: ISO C 9x
1167 clog10f NEW: ISO C 9x
1168 clog10l NEW: ISO C 9x
1169 clogf NEW: ISO C 9x
1170 clogl NEW: ISO C 9x
1171 conj NEW: ISO C 9x
1172 conjf NEW: ISO C 9x
1173 conjl NEW: ISO C 9x
1174 cpow NEW: ISO C 9x
1175 cpowf NEW: ISO C 9x
1176 cpowl NEW: ISO C 9x
1177 cproj NEW: ISO C 9x
1178 cprojf NEW: ISO C 9x
1179 cprojl NEW: ISO C 9x
1180 creal NEW: ISO C 9x
1181 crealf NEW: ISO C 9x
1182 creall NEW: ISO C 9x
1183 creat64 NEW: LFS
1184 csin NEW: ISO C 9x
1185 csinf NEW: ISO C 9x
1186 csinh NEW: ISO C 9x
1187 csinhf NEW: ISO C 9x
1188 csinhl NEW: ISO C 9x
1189 csinl NEW: ISO C 9x
1190 csqrt NEW: ISO C 9x
1191 csqrtf NEW: ISO C 9x
1192 csqrtl NEW: ISO C 9x
1193 ctan NEW: ISO C 9x
1194 ctanf NEW: ISO C 9x
1195 ctanh NEW: ISO C 9x
1196 ctanhf NEW: ISO C 9x
1197 ctanhl NEW: ISO C 9x
1198 ctanl NEW: ISO C 9x
1199 des_setparity NEW: Secure RPC
1200 ecb_crypt NEW: Secure RPC
1201 endutxent NEW: Unix98
1202 exp10 NEW: ISO C 9x
1203 exp10f NEW: ISO C 9x
1204 exp10l NEW: ISO C 9x
1205 exp2 NEW: ISO C 9x
1206 exp2f NEW: ISO C 9x
1207 exp2l NEW: ISO C 9x
1208 fattach NEW: STREAMS
1209 fdetach NEW: STREAMS
1210 fdim NEW: ISO C 9x
1211 fdimf NEW: ISO C 9x
1212 fdiml NEW: ISO C 9x
1213 feclearexcept NEW: ISO C 9x
1214 fegetenv NEW: ISO C 9x
1215 fegetexceptflag NEW: ISO C 9x
1216 fegetround NEW: ISO C 9x
1217 feholdexcept NEW: ISO C 9x
1218 feof_locked REMOVED
1219 feraiseexcept NEW: ISO C 9x
1220 ferror_locked REMOVED
1221 fesetenv NEW: ISO C 9x
1222 fesetexceptflag NEW: ISO C 9x
1223 fesetround NEW: ISO C 9x
1224 fetestexcept NEW: ISO C 9x
1225 feupdateenv NEW: ISO C 9x
1226 fflush_locked REMOVED
1227 ffsl NEW: GNU ext.
1228 ffsll NEW: GNU ext.
1229 fgetpos64 NEW: LFS
1230 fgets_unlocked NEW: GNU ext.
1231 fileno_locked REMOVED
1232 fma NEW: ISO C 9x
1233 fmaf NEW: ISO C 9x
1234 fmal NEW: ISO C 9x
1235 fmax NEW: ISO C 9x
1236 fmaxf NEW: ISO C 9x
1237 fmaxl NEW: ISO C 9x
1238 fmin NEW: ISO C 9x
1239 fminf NEW: ISO C 9x
1240 fminl NEW: ISO C 9x
1241 fmtmsg NEW: Unix98
1242 fopen64 NEW: LFS
1243 fputc_locked REMOVED
1244 fputs_unlocked NEW: GNU ext.
1245 fread_unlocked NEW: GNU ext.
1246 freopen64 NEW: LFS
1247 fseeko NEW: Unix98
1248 fsetpos64 NEW: LFS
1249 fstatfs64 NEW: LFS
1250 fstatvfs NEW: Unix98
1251 fstatvfs64 NEW: LFS
1252 ftello NEW: Unix98
1253 ftello64 NEW: LFS
1254 ftruncate64 NEW: LFS
1255 ftw64 NEW: LFS
1256 fwrite_unlocked NEW: GNU ext.
1257 gai_strerror NEW: IPv6
1258 gamma_r REMOVED
1259 gammaf_r REMOVED
1260 gammal_r REMOVED
1261 getchar_locked REMOVED
1262 getdate NEW: Unix98
1263 getdate_err NEW: Unix98
1264 getdate_r NEW: GNU ext.
1265 getmsg NEW: STREAMS
1266 getnameinfo NEW: IPv6
1267 getnetname NEW: Secure RPC
1268 getpmsg NEW: STREAMS
1269 getpt NEW: Unix98 PTY
1270 getrlimit64 NEW: LFS
1271 getutxent NEW: Unix98
1272 getutxid NEW: Unix98
1273 getutxline NEW: Unix98
1274 glob64 NEW: GNU ext.
1275 globfree64 NEW: GNU ext.
1276 gnu_get_libc_release NEW: GNU ext.
1277 gnu_get_libc_version NEW: GNU ext.
1278 grantpt NEW: Unix98 PTY
1279 host2netname NEW: Secure RPC
1280 iconv NEW: iconv
1281 iconv_close NEW: iconv
1282 iconv_open NEW: iconv
1283 if_freenameindex NEW: IPv6
1284 if_indextoname NEW: IPv6
1285 if_nameindex NEW: IPv6
1286 if_nametoindex NEW: IPv6
1287 in6addr_any NEW: IPv6
1288 in6addr_loopback NEW: IPv6
1289 inet6_isipv4mapped NEW: IPv6
1290 isastream NEW: STREAMS
1291 iswblank NEW: GNU ext.
1292 key_decryptsession NEW: Secure RPC
1293 key_decryptsession_pk NEW: Secure RPC
1294 key_encryptsession NEW: Secure RPC
1295 key_encryptsession_pk NEW: Secure RPC
1296 key_gendes NEW: Secure RPC
1297 key_get_conv NEW: Secure RPC
1298 key_secretkey_is_set NEW: Secure RPC
1299 key_setnet NEW: Secure RPC
1300 key_setsecret NEW: Secure RPC
1301 llrint NEW: ISO C 9x
1302 llrintf NEW: ISO C 9x
1303 llrintl NEW: ISO C 9x
1304 llround NEW: ISO C 9x
1305 llroundf NEW: ISO C 9x
1306 llroundl NEW: ISO C 9x
1307 log2 NEW: ISO C 9x
1308 log2f NEW: ISO C 9x
1309 log2l NEW: ISO C 9x
1310 lrint NEW: ISO C 9x
1311 lrintf NEW: ISO C 9x
1312 lrintl NEW: ISO C 9x
1313 lround NEW: ISO C 9x
1314 lroundf NEW: ISO C 9x
1315 lroundl NEW: ISO C 9x
1316 lseek64 NEW: LFS
1317 makecontext NEW: Unix98
1318 mempcpy NEW: GNU ext.
1319 mmap64 NEW: LFS
1320 moncontrol REMOVED
1321 modify_ldt NEW: kernel
1322 nan NEW: ISO C 9x
1323 nanf NEW: ISO C 9x
1324 nanl NEW: ISO C 9x
1325 nearbyint NEW: ISO C 9x
1326 nearbyintf NEW: ISO C 9x
1327 nearbyintl NEW: ISO C 9x
1328 netname2host NEW: Secure RPC
1329 netname2user NEW: Secure RPC
1330 nexttoward NEW: ISO C 9x
1331 nexttowardf NEW: ISO C 9x
1332 nexttowardl NEW: ISO C 9x
1333 nftw NEW: Unix98
1334 nftw64 NEW: LFS
1335 open64 NEW: LFS
1336 passwd2des NEW: Secure RPC
1337 pow10 NEW: GNU ext.
1338 pow10f NEW: GNU ext.
1339 pow10l NEW: GNU ext.
1340 pread NEW: Unix98
1341 pread64 NEW: LFS
1342 printf_size NEW: GNU ext.
1343 printf_size_info NEW: GNU ext.
1344 profil_counter REMOVED
1345 pthread_mutexattr_getkind_np REPLACED
1346 pthread_mutexattr_setkind_np REPLACED
1347 ptsname NEW: Unix98 PTY
1348 ptsname_r NEW: Unix98 PTY
1349 putc_locked REMOVED
1350 putchar_locked REMOVED
1351 putgrent NEW: GNU ext.
1352 putmsg NEW: STREAMS
1353 putpmsg NEW: STREAMS
1354 pututxline NEW: Unix98
1355 pwrite NEW: Unix98
1356 pwrite64 NEW: LFS
1357 readdir64 NEW: LFS
1358 readdir64_r NEW: LFS
1359 remquo NEW: ISO C 9x
1360 remquof NEW: ISO C 9x
1361 remquol NEW: ISO C 9x
1362 round NEW: ISO C 9x
1363 roundf NEW: ISO C 9x
1364 roundl NEW: ISO C 9x
1365 rtime NEW: GNU ext.
1366 scalbln NEW: ISO C 9x
1367 scalblnf NEW: ISO C 9x
1368 scalblnl NEW: ISO C 9x
1369 scandir64 NEW: LFS
1370 sendfile NEW: kernel
1371 setcontext NEW: Unix98
1372 setrlimit64 NEW: LFS
1373 setutxent NEW: Unix98
1374 sighold NEW: Unix98
1375 sigignore NEW: Unix98
1376 sigqueue NEW: POSIX.1b
1377 sigrelse NEW: Unix98
1378 sigset NEW: POSIX.1b
1379 sigtimedwait NEW: POSIX.1b
1380 sigwaitinfo NEW: POSIX.1b
1381 sincos NEW: GNU ext.
1382 sincosf NEW: GNU ext.
1383 sincosl NEW: GNU ext.
1384 statfs64 NEW: LFS
1385 statvfs NEW: Unix98
1386 statvfs64 NEW: LFS
1387 strcasestr NEW: GNU ext.
1388 strtoimax NEW: ISO C 9x
1389 strtoumax NEW: ISO C 9x
1390 strverscmp NEW: GNU ext.
1391 svcauthdes_stats NEW: Secure RPC
1392 svcunix_create NEW: sunrpc etx
1393 svcunixfd_create NEW: sunrpc ext
1394 swapcontext NEW: Unix98
1395 tcgetsid NEW: Unix98 PTY
1396 tdestroy NEW: GNU ext.
1397 tgamma NEW: ISO C 9x
1398 tgammaf NEW: ISO C 9x
1399 tgammal NEW: ISO C 9x
1400 tmpfile64 NEW: LFS
1401 trunc NEW: ISO C 9x
1402 truncate64 NEW: LFS
1403 truncf NEW: ISO C 9x
1404 truncl NEW: ISO C 9x
1405 umount2 NEW: kernel
1406 unlockpt NEW: Unix98 PTY
1407 updwtmpx NEW: Unix98
1408 user2netname NEW: Secure RPC
1409 utmpxname NEW: Unix98
1410 versionsort NEW: GNU ext.
1411 versionsort64 NEW: GNU ext.
1412 waitid NEW: Unix98
1413 wcscasecmp NEW: GNU ext.
1414 wcsncasecmp NEW: GNU ext.
1415 wcsnlen NEW: GNU ext.
1416 wcstoimax NEW: ISO C 9x
1417 wcstoll NEW: ISO C 9x
1418 wcstoull NEW: ISO C 9x
1419 wcstoumax NEW: ISO C 9x
1420 wcswcs NEW: Unix98
1421 wordexp NEW: POSIX.2
1422 wordfree NEW: POSIX.2
1423 write_profiling REMOVED
1424 xdecrypt NEW: Secure RPC
1425 xdr_authdes_cred NEW: Secure RPC
1426 xdr_authdes_verf NEW: Secure RPC
1427 xdr_cryptkeyarg NEW: Secure RPC
1428 xdr_cryptkeyarg2 NEW: Secure RPC
1429 xdr_cryptkeyres NEW: Secure RPC
1430 xdr_getcredres NEW: Secure RPC
1431 xdr_key_netstarg NEW: Secure RPC
1432 xdr_key_netstres NEW: Secure RPC
1433 xdr_keybuf NEW: Secure RPC
1434 xdr_keystatus NEW: Secure RPC
1435 xdr_netnamestr NEW: Secure RPC
1436 xdr_sizeof NEW: Secure RPC
1437 xdr_unixcred NEW: sunrpc ext
1438 xencrypt NEW: Secure RPC
1439 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1440 \f
1441 Version 2.0.6
1443 * more bug fixes
1445 \f
1446 Version 2.0.5
1448 * more bug fixes
1450 * inet_ntoa is thread-safe
1452 * updwtmp is moved from libutil to libc
1454 * rewrite of cbrt function
1456 * update of timezone data
1457 \f
1458 Version 2.0.4
1460 * more bug fixes
1461 \f
1462 Version 2.0.3
1464 * more bug fixes
1465 \f
1466 Version 2.0.2
1468 * more bug fixes
1470 * add atoll function
1472 * fix complex problems in Berkeley DB code
1474 * fix math functions
1475 \f
1476 Version 2.0.1
1478 * fixed lots of header problems (especially Linux/GNU specific)
1480 * dynamic loader preserves all registers
1482 * Roland McGrath provided support for handling of auxiliary objects in
1483 the ELF dynamic loader.
1485 * support for parallel builds is improved
1486 \f
1487 Version 2.0
1489 * GNU extensions are no longer declared by default. To enable them you
1490 must define the macro `_GNU_SOURCE' in your program or compile with
1491 `-D_GNU_SOURCE'.
1493 * The library has changed from using GNU ld symbol aliases to using weak
1494 symbols where available. The ELF object file format supports weak
1495 symbols; GNU ld also supports weak symbols in the a.out format. (There
1496 is also now support for other GNU ld extensions in ELF. Use the
1497 `--with-elf' option to configure to indicate you have ELF, and
1498 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1499 of many files which contained only symbol aliases, reducing the size of
1500 the source and the compiled library; many other files were renamed to
1501 less cryptic names previously occupied by the symbol alias files.
1502 There is a new header file <elf.h> for programs which operate on
1503 files in the ELF format.
1505 * Converted to Autoconf version 2, so `configure' has more options.
1506 Run `configure --help' to see the details.
1508 * The library can now be configured to build profiling, highly-optimized
1509 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1510 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1511 `configure' enable building these extra libraries. The shared library is
1512 built by default when using both ELF and GNU ld. When shared libraries
1513 are enabled, the new library `-ldl' is available for arbitrary run-time
1514 loading of shared objects; its interface is defined in <dlfcn.h>. The
1515 new header file <link.h> gives access to the internals of the run-time
1516 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1517 application of same name on other systems and it provides information
1518 about dynamically linked binaries.
1520 * The C library now provides the run-time support code for profiling
1521 executables compiled with `-pg'. Programs can control the profiling code
1522 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1523 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1524 the support for this file format was contributed by David Mosberger-Tang.
1526 * The math code has been replaced with a math library based on fdlibm from
1527 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1528 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1529 functions. The math functions now reside in a separate library, so
1530 programs using them will need to use `-lm' their linking commands.
1532 * John C. Bowman contributed optimized ix87 assembler inline functions.
1534 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1535 mechanism similar to that found in Solaris 2. This is now used for the
1536 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1537 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1538 file controls what services are used for each individual database. This
1539 works by loading shared libraries with names specified in `nsswitch.conf',
1540 so service modules can be changed or added at any time without even
1541 relinking any program. Currently there are the file, db, and NIS based
1542 NSS services available.
1544 * The new functions `strtoq' and `strtouq' parse integer values from
1545 strings, like `strtol' and `strtoul', but they return `long long int' and
1546 `unsigned long long int' values, respectively (64-bit quantities).
1548 * The new functions `strtof' and `strtold' parse floating-point values from
1549 strings, like `strtod', but they return `float' and `long double' values,
1550 respectively (on some machines `double' and `long double' are the same).
1552 * Ulrich Drepper has contributed new implementations of the floating-point
1553 printing and reading code used in the `printf' family of functions and
1554 `strtod', `strtof', and `strtold'. These new functions are perfectly
1555 accurate, and much faster than the old ones.
1557 * The implementation of the POSIX locale model was completely rewritten by
1558 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1559 to compile the POSIX locale definition.
1561 * The former dummy implementations of the strcoll and strxfrm function are
1562 now replaced by fully functional code contributed by Ulrich Drepper. The
1563 collation information comes from the POSIX locale definitions.
1565 * The new header <langinfo.h> defines an interface for accessing
1566 various locale-dependent data (using the locale chosen with `setlocale').
1568 * Ulrich Drepper has contributed a new suite of functions for operation on
1569 wide-character and multibyte-character strings, in <wchar.h>;
1570 and classification and case conversion of wide characters, in <wctype.h>.
1571 These new functions are conforming to the ISO C, Amendement 1 specification.
1573 * There is now a second implementation of the standard I/O library available.
1574 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1575 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1577 * You can now use positional parameter specifications in format strings
1578 for the `printf' and `scanf' families of functions. For example,
1579 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1580 ``Number 6, Mr Jones''. This is mainly useful when providing different
1581 format strings for different languages, whose grammars may dictate
1582 different orderings of the values being printed. To support this
1583 feature, the interface for `register_printf_handler' has changed; see
1584 the header file <printf.h> for details.
1586 * The `printf' and `scanf' families of functions now understand a new
1587 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1588 to group numbers as indicated by the locale; for `scanf' and friends, this
1589 says to accept as valid only a number with all the proper grouping
1590 separators in the right places. In the default "C" locale, numbers are
1591 not grouped; but locales for specific countries will define the usual
1592 conventions (i.e. separate thousands with `,' in the US locale).
1594 * The pgrp functions have been regularized, slightly incompatibly but much
1595 less confusingly. The core functions are now `getpgid' and `setpgid',
1596 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1597 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1598 provided for compatibility. There is no longer an incompatible `getpgrp'
1599 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1601 * The new header file <fts.h> and suite of functions simplify programs that
1602 operate on directory trees. This code comes from 4.4 BSD.
1604 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1605 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1606 NSS scheme used in glibc.
1608 * There is a new malloc debugging hook `__memalign_hook'.
1610 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1611 `unsigned int' in <sys/types.h>. These are for compatibility only and
1612 their use is discouraged.
1614 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1615 done differently, so that it works even without GNU ld.
1617 * New function `euidaccess' checks allowed access to a file like `access',
1618 but using the effective IDs instead of the real IDs.
1620 * The time zone data files have been updated for the latest and greatest
1621 local time conventions of the countries of the world.
1623 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1624 see <dirent.h>.
1626 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1627 for formatting floating-point numbers. They are provided only for
1628 compatibility; new programs should use `sprintf' instead. There are
1629 also equivalent function for the `long double' floating-point type and
1630 all functions also exist in a reentrant form.
1632 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1633 functions for maintaining the login-record files (primarily of use to
1634 system programs such as `login'), and convenient functions for
1635 allocating and initializing a pseudo-terminal (pty) device.
1637 * Ulrich Drepper has contributed new support for System V style
1638 shared memory and IPC on systems that support it.
1640 * Ulrich Drepper has contributed several miscellaneous new functions found
1641 in System V: The `hsearch' family of functions provide an effective
1642 implementation of hash tables; `a64l' and `l64a' provide a very simple
1643 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1644 number generator.
1646 * Ulrich Drepper has contributed new reentrant counterparts for the
1647 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1649 * Ulrich Drepper has contributed new, highly-optimized versions of several
1650 string functions for the i486/Pentium family of processors.
1652 * Ulrich Drepper has updated the Linux-specific code, based largely
1653 on work done in Hongjiu Lu's version of GNU libc for Linux.
1654 The GNU library now supports Linux versions 2.0.10 and later,
1655 using the ELF object file format (i[3456]86-*-linux).
1657 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1659 * David Mosberger-Tang and Richard Henderson have ported the C library
1660 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1661 dynamic linking support for ELF/Alpha.
1663 * Richard Henderson contributed several Alpha optimized assembler function
1664 for arithmetic and string handling.
1666 * Ulrich Drepper has contributed a new set of message catalog functions to
1667 support multiple languages using the <libintl.h> interface, for use with
1668 his new package GNU gettext. Translation volunteers have contributed
1669 catalogs of the library's messages in Spanish, German, and Korean.
1671 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1672 program and the `catgets' function for reading the catalog files it
1673 creates. (The <libintl.h> interface is preferred; we include the
1674 <nl_types.h> interface using `catgets' only for source compatibility with
1675 programs already written to use it.)
1677 * New header file <values.h> gives SVID-compatible names for <limits.h>
1678 constants.
1680 * Various new macros, declarations, and small header files for compatibility
1681 with 4.4 BSD.
1683 * New function `group_member' is a convenient way to check if a process has
1684 a given effective group ID.
1686 * When using GCC 2.7 and later, the socket functions are now declared in a
1687 special way so that passing an argument of type `struct sockaddr_in *',
1688 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1689 `struct sockaddr *' type, does not generate a type-clash warning.
1691 * New function `error' declared in header file <error.h> is a convenient
1692 function for printing error messages and optionally exiting; this is the
1693 canonical function used in GNU programs. The new functions `err', `warn',
1694 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1695 doing the same thing.
1697 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1698 POSIX.2 `glob' function to do ~ and {...} expansion.
1700 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1701 `clearenv' which is used in POSIX.9 is also available.
1703 * New function `getsid' returns session ID number on systems that support it.
1705 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1706 files <db.h> and <mpool.h> provide a rich set of functions for several
1707 types of simple databases stored in memory and in files, and <ndbm.h> is
1708 an old `ndbm'-compatible interface using the `db' functions. Link with
1709 `-ldb' to get these functions.
1711 * New macro `strdupa' copies a string like `strdup', but uses local stack
1712 space from `alloca' instead of dynamic heap space from `malloc'.
1714 * New function `strnlen' is like `strlen' but searches only a given maximum
1715 number of characters for the null terminator. `stpncpy', `strndup' and
1716 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1717 function.
1719 * New function `statfs' in header <sys/statfs.h>.
1721 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1722 provide convenient functions for operating on blocks of null-terminated
1723 strings.
1725 * A new suite of functions in <utmp.h> handle all the details of reading
1726 and writing the utmp file.
1728 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1729 Thorsten Kukuk.
1731 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1732 completely POSIX compliant and also implemented the extended functionality
1733 to handle alternate digit representation and alternate era date formats.
1735 * Ulrich Drepper provided an implementation of the `strptime' function
1736 defined in XPG4.2 which transforms a string into a `struct tm' value.
1738 * Paul Eggert provided the tzselect shell script as part of the timezone
1739 code. The shell script makes it easy to select the correct timezone
1740 specification.
1742 * The implementation of the malloc family of functions is completely replaced
1743 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1744 The implementation uses the mmap function (if available) and it is
1745 optimized for the use in multi threaded programs.
1747 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1748 functions. This new functionality is usable by specifying a special
1749 salt string and it is compatible with implementation on *BSD systems.
1751 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1752 `getsubopt' to handle second level command line options, `bsd_signal'
1753 to access BSD style `signal' functionality, the obsolete `regexp' style
1754 expression matcher.
1756 * the `lchown' function is available on system which support this
1757 functionality.
1759 * The implementation of the shadow password handling function was contributed
1760 by Ulrich Drepper.
1762 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1764 * POSIX.1g support was added. The <sys/select.h> header is available,
1765 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1766 implementation of `getaddrinfo'.
1767 \f
1768 Version 1.09
1770 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1772 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1773 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1775 * The new function `daemon' from 4.4 BSD is useful for server programs that
1776 want to put themselves in the background.
1778 * Joel Sherrill has contributed support for several standalone boards that
1779 run without an operating system.
1781 * `printf', `scanf' and friends now accept a `q' type modifier for long
1782 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1784 * All of the code taken from BSD (notably most of the math and networking
1785 routines) has been updated from the BSD 4.4-Lite release.
1787 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1789 * The new functions `getdomainname' and `setdomainname' fetch or change the
1790 YP/NIS domain name. These are system calls which exist on systems which
1791 have YP (aka NIS).
1793 * The time zone data files have been updated for the latest international
1794 conventions.
1796 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1797 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1798 \f
1799 Version 1.08
1801 * The C library now includes support for Sun RPC, from Sun's free
1802 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1803 are included. (There is still no support for YP.)
1805 * Tom Quinn has contributed a port of the C library to SGI machines running
1806 Irix 4 (mips-sgi-irix4).
1808 * The new `lockf' function is a simplified interface to the locking
1809 facilities of `fcntl', included for compatibility.
1811 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1813 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1815 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1816 compatibility.
1818 * The error message printed by `assert' for a failed assertion now includes
1819 the name of the program (if using GNU ld) and the name of the calling
1820 function (with versions of GCC that support this).
1822 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1824 * The library now includes the <sys/mman.h> header file and memory
1825 management functions `mmap', `munmap', `mprotect', `msync', and
1826 `madvise', on systems that support those facilities.
1828 * The interface for `mcheck' has changed slightly: the function called to
1829 abort the program when an allocation inconsistency is detected now takes
1830 an argument that indicates the type of failure. The new function
1831 `mprobe' lets you request a consistency check for a particular block at
1832 any time (checks are normally done only when you call `free' or `realloc'
1833 on a block).
1835 * It is now possible to easily cross-compile the C library, building on one
1836 system a library to run on another machine and/or operating system. All
1837 you need to do is set the variable `HOST_CC' in `configparms' to the
1838 native compiler for programs to run on the machine you are building on (a
1839 few generator programs are used on Unix systems); set `CC' to the
1840 cross-compiler.
1842 * The new function `fexecve' (only implemented on the GNU system) executes
1843 a program file given a file descriptor already open on the file.
1844 \f
1845 Version 1.07
1847 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1848 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1850 * You can set the variable `libprefix' in `configparms' to specify a prefix
1851 to be prepended to installed library files; this makes it easy to install
1852 the GNU C library to be linked as `-lgnuc' or whatever.
1854 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1855 copies a limited number of characters from a string, and returns the
1856 address of the last character written.
1858 * You no longer need to check for whether the installed `stddef.h' is
1859 compatible with the GNU C library. configure now checks for you.
1861 * You can now define a per-stream `fileno' function to convert the
1862 stream's cookie into an integral file descriptor.
1864 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1865 allocates zero bytes of storage, and returns a unique pointer which
1866 you can pass to `realloc' or `free'. The behavior is undefined if
1867 you dereference this pointer.
1869 * The C library now runs on Sony NEWS m68k machines running either
1870 NewsOS 3 or NewsOS 4.
1872 * The new `syscall' function is a system-dependent primitive function
1873 for invoking system calls. It has the canonical behavior on Unix
1874 systems, including unreliable return values for some calls (such as
1875 `pipe', `fork' and `getppid').
1877 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1878 to `EAGAIN', which is the preferred name. On systems whose kernels
1879 use two distinct codes, the C library now translates EWOULDBLOCK to
1880 EAGAIN in every system call function.
1881 \f
1882 Version 1.06
1884 * The GNU C Library Reference Manual is now distributed with the library.
1885 `make dvi' will produce a DVI file of the printed manual.
1886 `make info' will produce Info files that you can read on line using C-h i
1887 in Emacs or the `info' program.
1888 Please send comments on the manual to bug-glibc-manual@gnu.org.
1890 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1892 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1894 * Jason Merrill has contributed a port to the Sequent Symmetry running
1895 Dynix version 3 (i386-sequent-dynix).
1897 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1898 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1900 * New function `memory_warnings' lets you arrange to get warnings when
1901 malloc is running out of memory to allocate, like Emacs gives you.
1903 * The C library now contains the relocating allocator used in Emacs 19 for
1904 its editing buffers. This allocator (ralloc) minimizes allocation
1905 overhead and fragmentation by moving allocated regions around whenever it
1906 needs to. You always refer to a ralloc'd region with a "handle" (a
1907 pointer to a pointer--an object of type `void **').
1909 * There is a new `printf' format: `%m' gives you the string corresponding
1910 to the error code in `errno'.
1912 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1913 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1914 pass, the `a' modifier says to fill in a `char **' you pass with a
1915 malloc'd string.
1917 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1918 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1919 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1921 * `mkstemp' is a traditional Unix function to atomically create and open a
1922 uniquely-named temporary file.
1923 \f
1924 Version 1.05
1926 * The standard location for the file that says what the local timezone is
1927 has changed again. It is now `/usr/local/etc/localtime' (or more
1928 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1930 * The distribution no longer contains any files with names longer than 14
1931 characters.
1933 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1934 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1936 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1937 \f
1938 Version 1.04
1940 * The configuration process has changed quite a bit. The `configure'
1941 script is now used just like the configuration scripts for other GNU
1942 packages. The `sysdeps' directory hierarchy is much rearranged.
1943 The file `INSTALL' explains the new scheme in detail.
1945 * The header files no longer need to be processed into ANSI C and
1946 traditional C versions. There is just one set of files to install, and
1947 it will work with ANSI or old C compilers (including `gcc -traditional').
1949 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1950 MIPS DECStation running Ultrix 4.
1952 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1953 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1954 made itself into a shared library.
1956 * Yet further improved support for the i386, running 4.3 BSD-like systems
1957 (such as Mach 3 with the Unix single-server), or System V.
1959 * New function `strncasecmp' to do case-insensitive string comparison
1960 with limited length.
1962 * New function `strsep' is a reentrant alternative to `strtok'.
1964 * New functions `scandir' and `alphasort' for searching directories.
1966 * New function `setenv' is a better interface to `putenv'.
1968 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1969 function for traversing a directory tree.
1971 * The GNU obstack package is now also part of the C library.
1972 The new function `open_obstack_stream' creates a stdio stream that
1973 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1974 formatted output directly to an obstack.
1976 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1977 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1979 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1981 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1982 things to your strings.
1984 * There are some new test programs: test-fseek, testmb, and testrand.
1986 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1987 These ports are not finished, but are a good starting place for really
1988 supporting those systems.
1990 * `/etc/localtime' is now the standard location for the file that says what
1991 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1992 This follows the general principle that `/etc' is the place for all local
1993 configuration files.
1995 * The C library header files now use `extern "C"' when used by the C++
1996 compiler, so the C library should now work with C++ code.
1998 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1999 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2000 in <strings.h>.)
2002 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2003 function which uses the `merge sort' algorithm, and is said to be
2004 significantly faster than the old GNU `qsort' function. Merge sort is
2005 now the standard `qsort' function. The new algorithm can require a lot
2006 of temporary storage; so, the old sorting function is called when the
2007 required storage is not available.
2009 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2010 provides the Unix `crypt' function, plus some other entry points.
2012 * The code and header files taken from 4.4 BSD have been updated with the
2013 latest files released from Berkeley.
2014 \f
2015 ----------------------------------------------------------------------
2016 Copyright information:
2018 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2020 Permission is granted to anyone to make or distribute verbatim copies
2021 of this document as received, in any medium, provided that the
2022 copyright notice and this permission notice are preserved,
2023 thus giving the recipient permission to redistribute in turn.
2025 Permission is granted to distribute modified versions
2026 of this document, or of portions of it,
2027 under the above conditions, provided also that they
2028 carry prominent notices stating who last changed them.
2029 \f
2030 Local variables:
2031 version-control: never
2032 fill-column: 76
2033 End: