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1 GNU C Library NEWS -- history of user-visible changes. 2011-11-14
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, 10103, 10709, 11589, 12403, 12847, 12868, 12852, 12874,
13 12885, 12892, 12907, 12922, 12935, 13007, 13021, 13067, 13068, 13090,
14 13092, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13179, 13192,
15 13268, 13276, 13291, 13335, 13337, 13344, 13358, 13367
17 * New program pldd to list loaded object of a process
18 Implemented by Ulrich Drepper.
20 * Add nss_db support back to glibc. No more dependency on Berkeley db
21 and support for initgroups lookups.
22 Implemented by Ulrich Drepper.
24 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
25 Contributed by HJ Lu.
27 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
28 Contributed by HJ Lu.
30 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
31 on x86-32 and x86-64.
32 Contributed by Liubov Dmitrieva.
34 * Optimized strchr and strrchr for SSE on x86-32.
35 Contributed by Liubov Dmitrieva.
37 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp for x86-64 and x86-32.
38 Contributed by Liubov Dmitrieva.
40 * New interfaces: scandirat, scandirat64
41 Implemented by Ulrich Drepper.
43 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
44 Implemented by Ulrich Drepper.
46 * nscd now also caches the netgroup database.
47 Implemented by Ulrich Drepper.
49 * Integrate libm with gcc's -ffinite-math-only option.
50 Implemented by Ulrich Drepper.
52 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
53 to math functions. Implemented by Ulrich Drepper.
55 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
56 Implemented by Ulrich Drepper.
58 * New Linux interfaces: process_vm_readv, process_vm_writev
60 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
61 Implemented by Ulrich Drepper.
62 \f
63 Version 2.14
65 * The following bugs are resolved with this release:
67 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
68 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
69 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
70 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
71 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
72 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
73 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
74 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
75 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
76 12795, 12811, 12813, 12814, 12841
78 * The RPC implementation in libc is obsoleted. Old programs keep working
79 but new programs cannot be linked with the routines in libc anymore.
80 Programs in need of RPC functionality must be linked against TI-RPC.
81 The TI-RPC implementation is IPv6 enabled and there are other benefits.
83 Visible changes of this change include (obviously) the inability to link
84 programs using RPC functions without referencing the TI-RPC library and the
85 removal of the RPC headers from the glibc headers.
86 Implemented by Ulrich Drepper.
88 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
89 syncfs, setns, sendmmsg
91 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
92 yue_HK, lij_IT, mhr_RU
94 * New encodings: CP770, CP771, CP772, CP773, CP774
96 * New program sotruss to trace calls through PLTs
97 Implemented by Ulrich Drepper.
99 * The malloc hook implementation is marked deprecated and will be removed
100 from the default implementation in the next version. The design never
101 worked ever since the introduction of threads. Even programs which do
102 not create threads themselves can use multiple threads created internally.
103 \f
104 Version 2.13
106 * The following bugs are resolved with this release:
108 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
109 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
110 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
111 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
112 12378, 12394, 12397
114 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
116 * POWER7 optimizations: memset, memcmp, strncmp
118 * New optimized string functions for x86-64: strnlen (SSE2),
119 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
120 Implemented by Ulrich Drepper.
121 \f
122 Version 2.12
124 * The following bugs are resolved with this release:
126 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
127 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
128 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
129 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
130 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
131 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
132 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
133 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
135 * New interfaces: pthread_getname_np, pthread_setname_np
137 * New Linux interface: recvmmsg
139 * STT_GNU_IFUNC implemented for Sparc by David Miller.
141 * The dynamic linker now recognizes supported ABI versions from the
142 EI_ABIVERSION field in the ELF header.
143 Implemented by Ulrich Drepper.
145 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
146 will not be used to fill in password fields in the passwd.byname replies.
147 Instead it is used to synthesize the shadow.byname table, should it be
148 missing. This is a useful mode in some installations involving Solaris.
149 Implemented by Ulrich Drepper.
151 * New locales: kok_IN, sq_MK, cv_RU
152 \f
153 Version 2.11
155 * The following bugs are resolved with this release:
157 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
158 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
159 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
160 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
161 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
162 10789, 10817, 10823, 10840, 10847
164 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
165 mkostemps64
166 Implemented by Ulrich Drepper.
168 * Checking version of longjmp added that fails if an uninitialized stack
169 frame would be created. Implemented by Ulrich Drepper.
171 * STT_GNU_IFUNC is now supported in static executables.
172 Implemented by H.J. Lu.
174 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
176 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
177 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
178 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
179 Contributed by H.J. Lu.
181 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
182 Implemented by Ulrich Drepper.
184 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
185 strstr, strcasestr.
186 Contributed by H.J. Lu.
188 * Support for fma instruction in AVX on x86-64.
189 Implemented by H.J. Lu and Ulrich Drepper.
191 * AVX support in x86-64 auditing support in ld.so.
192 Implemented by H.J. Lu.
194 * STB_GNU_UNIQUE support added.
195 Implemented by Ulrich Drepper.
197 * Implement second fallback mode for optimized DNS lookup for even more
198 broken environments. If two requests from the same port are not
199 handled correctly close the socket and open a new one before sending
200 the second request. The 'single-request-reopen' option in /etc/resolv.conf
201 can be used to select this mode right away, instead of rediscovering the
202 necessity is every process again.
203 Implemented by Ulrich Drepper.
205 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
206 Implemented by Adam Tkac.
208 * Optimized iconv conversions for S390x.
209 Implemented by Andreas Krebbel.
211 * Using condvars with PI mutexes is now more efficient due to kernel
212 support for requeueing to PI futexes. NPTL support added for x86-64.
213 Implemented by Ulrich Drepper.
215 * New locales: ps_AF, my_MM
216 \f
217 Version 2.10
219 * The following bugs are resolved with this release:
221 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
222 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
223 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
224 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
225 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
227 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
228 Implemented by Ulrich Drepper.
230 * New Linux interfaces: accept4, fallocate, fallocate64.
231 Implemented by Ulrich Drepper.
233 * Correct declarations of string function when used in C++ code. This
234 could lead to compile errors for invalid C++ code.
236 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
237 now in POSIX.
239 * New POSIX 2008 interface: psiginfo
240 Implemented by Ulrich Drepper.
242 * New ISO C++1x interfaces: quick_exit, at_quick_exit
243 Implemented by Ulrich Drepper.
245 * Support for selecting between multiple function definitions at runtime
246 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
248 * The libcrypt library can now use the hash function implementations in
249 NSS. Implemented by Ulrich Drepper.
251 * The malloc implementation can be compiled to be less memory efficient
252 but higher performing in multi-threaded programs.
253 Implemented by Ulrich Drepper.
255 * New locales: nan_TW@latin, ks_IN
257 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
258 Implemented by Ulrich Drepper.
260 * Extended printf hook support. It is possible to use user-defined types
261 and extend existing format specifiers.
262 Implemented by Ulrich Drepper.
264 * Handling for group shadow files has been added.
265 Implemented by Ulrich Drepper.
267 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
268 servers (the case, e.g., for some people using the built-in DNS
269 server in ADSL modems/routers). There is a once-per-process timeout
270 in case of a broken server. To avoid it, users can run nscd or put
271 'options single-request' in /etc/resolv.conf.
272 Implemented by Ulrich Drepper.
273 \f
274 Version 2.9
276 * The following bugs are resolved with this release:
278 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
279 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
280 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
281 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
282 6968, 6974, 6980, 6995, 7008, 7009, 7029
284 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
285 up at the same time. Implemented by Ulrich Drepper.
287 * TLS descriptors for LD and GD on x86 and x86-64.
288 Implemented by Alexandre Oliva.
290 * getaddrinfo now handles DCCP and UDPlite.
291 Implemented by Ulrich Drepper.
293 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
294 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
295 Implemented by Ulrich Drepper.
297 * New implementation of memmem, strstr, and strcasestr which is O(n).
298 Implemented by Eric Blake.
300 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
302 * Implement "e" option for popen to open file descriptor with the
303 close-on-exec flag set. Implemented by Ulrich Drepper.
305 * Implement "b" mode for fmemopen. In this mode writes writes don't
306 implicitly add a NUL byte and seeks from the end of the buffer really
307 use the buffer end, not the string length as the basis.
308 Implemented by Ulrich Drepper.
310 * Many functions, exported and internal, now atomically set the close-on-exec
311 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
313 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
314 Sinhala)
315 Implemented by Pravin Satpute.
317 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
318 \f
319 Version 2.8
321 * The following bugs are resolved with this release:
323 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
324 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
325 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
326 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
327 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
328 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
329 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
331 * New locales: bo_CN, bo_IN, shs_CA.
333 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
335 * Sorting rules for some Indian languages (Devanagari and Gujarati).
336 Implemented by Pravin Satpute.
338 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
340 * nscd caches now all timeouts for DNS entries
341 Implemented by Ulrich Drepper.
343 * nscd is more efficient and wakes up less often.
344 Implemented by Ulrich Drepper.
346 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
347 vdprintf, and obstack_vprintf.
348 Implemented by Jakub Jelinek.
350 * Faster memset for x86-64.
351 Implemented by Harsha Jagasia and H.J. Lu.
353 * Faster memcpy on x86.
354 Implemented by Ulrich Drepper.
356 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
357 Implemented by Ulrich Drepper.
359 * Faster sqrt and sqrtf implemention for some PPC variants.
360 Implemented by Stephen Munroe.
361 \f
362 Version 2.7
364 * The following bugs are resolved with this release:
366 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
367 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
368 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
369 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
370 5071, 5103, 5104, 5112, 5113, 5184, 5186
372 * More checking functions: fread, fread_unlocked, open*, mq_open.
373 Implemented by Jakub Jelinek and Ulrich Drepper.
375 * Extend fortification to C++. Implemented by Jakub Jelinek.
377 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
378 by not recognizing 'a' as a modifier when those specs are requested.
379 Implemented by Jakub Jelinek.
381 * PPC optimizations to math and string functions.
382 Implemented by Steven Munroe.
384 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
385 options to be passed. Implemented by Ulrich Drepper.
387 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
389 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
390 Implemented by Ulrich Drepper.
392 * Handle private futexes in the NPTL implementation.
393 Implemented by Jakub Jelinek and Ulrich Drepper.
395 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
396 Implemented by Roland McGrath and Ulrich Drepper.
398 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
400 * SHA-256 and SHA-512 based password encryption.
401 Implemented by Ulrich Drepper.
403 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
404 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
405 yo_NG.
407 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
408 Implemented by Ulrich Drepper.
409 \f
410 Version 2.6
412 * The following bugs are resolved with this release:
414 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
415 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
416 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
417 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
418 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
419 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
420 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
421 4702, 4858
423 * New Linux interfaces: epoll_pwait, sched_getcpu.
425 * New generic interfaces: strerror_l.
427 * nscd can now cache the services database. Implemented by Ulrich Drepper.
428 \f
429 Version 2.5
431 * The following bugs are resolved with this release:
433 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
434 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
435 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
436 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
437 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
438 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
439 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
440 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
441 3225, 3251, 3252, 3253, 3273
443 * For Linux, the sorting of addresses returned by getaddrinfo now also
444 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
445 Implemented by Ulrich Drepper.
447 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
448 Implemented by Ulrich Drepper.
450 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
452 * New iconv module for MIK. Contributed by Alexander Shopov.
454 * For sites with broken group and/or passwd database, the auto-propagate
455 option of nscd can prevent creating ID lookup entries from the results
456 of a name lookup and vice versa. This usually is no problem but some
457 site might have problems with the default behavior.
458 Implemented by Ulrich Drepper.
460 * Iterating over entire database in NIS can be slow. With the
461 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
462 to trade time for memory. The entire database will be read at once.
463 Implemented by Ulrich Drepper.
465 * The interfaces introduced in RFC 3542 have been implemented by
466 Ulrich Drepper.
468 * Support for the new ELF hash table format was added by Ulrich Drepper.
470 * Support for priority inheritance mutexes added by Jakub Jelinek and
471 Ulrich Drepper.
473 * Support for priority protected mutexes added by Jakub Jelinek.
475 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
476 or_IN, csb_PL, fy_NL, sr_ME.
477 \f
478 Version 2.4
480 * More overflow detection functions.
482 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
483 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
485 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
486 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
487 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
488 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
489 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
490 by Masahide Washizawa.
492 * It is now possible to install audit libraries for the dynamic linker using
493 LD_AUDIT. Implemented by Ulrich Drepper.
495 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
496 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
497 For a libc and libpthread that works well on Linux 2.4 kernels, we
498 recommend using the stable 2.3 branch.
500 * The new function open_wmemstream acts like open_memstream,
501 but uses a wchar_t wide character buffer.
503 * The new function ppoll is an improved version of poll, similar to pselect.
505 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
506 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
507 renameat, unlinkat, linkat, symlinkat, readlinkat.
509 * New Linux kernel system calls: unshare,
510 inotify_init, inotify_add_watch, inotify_rm_watch.
512 * The euidaccess function is now also known by the alias eaccess,
513 for compatibility with some other systems.
515 * Timezone data updated to 2006b version.
516 \f
517 Version 2.3.6
519 * The following bugs are resolved with this release:
521 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
522 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
523 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
524 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
525 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
526 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
528 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
530 * As of this release, GCC 4 can be used to compile the C Library.
532 * Timezone data updated to 2005m version.
533 \f
534 Version 2.3.5
536 * The following bugs are resolved with this release:
538 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
539 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
540 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
541 777, 787, 821, 822, 823, 825
543 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
544 \f
545 Version 2.3.4
547 * Support for RFC 3678. Real implementations exist only for Linux so far.
548 Implemented by Ulrich Drepper.
550 * nscd can now cache entries persistently. Expiring entries are reloaded.
551 For speedups the cache can be shared in memory with client processes.
552 Implemented by Ulrich Drepper.
554 * nscd can now perform SELinux checks.
555 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
557 * getaddrinfo queries are now cached. Canonical name lookup is performed
558 efficiently.
559 Implemented by Ulrich Drepper.
561 * The nothrow function attribute is used when headers are used by gcc when
562 compiling C code. This can avoid significant amounts of exception
563 handling data.
565 * The malloc functions perform more error checking and are stricter when
566 it comes to reacting on errors. The default action is to terminate
567 the process after showing an error message. Implemented by Ulrich Drepper.
569 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
570 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
572 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
573 namespaces using the new function dlmopen(). This feature is of course,
574 like most other dynamic loading functionality, not available in statically
575 linked applications. Implemented by Ulrich Drepper.
577 * Low-overhead boundary checking variants of string and some stdio functions
578 were added. These are to be used in conjunction with a gcc patch by
579 Jakub Jelinek which adds calls to these functions if possible.
580 Implemented by Jakub Jelinek and Ulrich Drepper.
582 * Old code for several operating systems and machine architectures that
583 have not been in working condition in a long time have been removed from
584 the main source tree maintained by the GNU C Library's maintainers.
585 These files are now reside in the separate `ports' source module
586 that is usable as an add-on when building the library.
587 \f
588 Version 2.3.3
590 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
591 interrogate the dynamic linker, compatible with the Solaris interface.
593 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
594 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
596 * getifaddrs now uses the netlink interface on Linux to get its information.
597 Implemented by Thorsten Kukuk.
599 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
600 Implemented by Ulrich Drepper.
602 * support for non-executable stacks on x86 has been added. Changes mostly
603 by Roland McGrath.
605 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
606 and Ulrich Drepper.
608 * getaddrinfo now performs destination address selection according to
609 RFC 3484.
610 \f
611 Version 2.3.2
613 * Thread-safe interfaces for many functions that access locale data
614 were added in version 2.3, but these features were omitted from NEWS.
615 Many functions have variants with an `_l' suffix that take a `locale_t'
616 object as a parameter rather than consulting the current locale.
617 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
618 create and maintain `locale_t' objects. Additionally, the new function
619 `uselocale' sets "the current locale" (as used by functions not so
620 parameterized) set for an individual thread. These features were added
621 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
623 * The functions getresuid, getresgid, setresuid, and setresgid, which
624 have long been available on Linux, are now declared in <unistd.h>
625 and are now also available on the Hurd.
627 * ELF thread-local storage support (TLS) now works on x86-64.
629 * The new dynamic string token $LIB is expanded in shared library names.
630 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
632 * Aldy Hernandez contributed complete software floating point support for
633 PowerPC machines with no FPU.
635 * fexecve is implemented on Linux.
637 * The `btowc' function should work at least twice as fast due to
638 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
640 * With approriate thread add-ons cancelable functions are now implemented
641 in libc.so as well. No need to call the function in libpthread. This
642 change allowed to finally disable the incorrect and expensive handling
643 of weak definition in ld.so.
645 * Yet more PLT entries in libc.so have been removed. We finally arrived
646 at the bare minimum. Startup times improved appropriately.
648 * Support for the new Linux/x86 system call interface was added. The
649 AT_SYSINFO auxiliary vector entry is recognized and handled.
650 \f
651 Version 2.3
653 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
654 charsets.
656 * iconv (the program and the interface) now accepts empty names (excluding
657 options like //TRANSLIT) to mean "use charset of current locale".
659 * localedef can now transliterate characters in strings which are not in
660 the provided charmap. The information from the input locale is used.
662 * Prelinking support was added for ELF targets. This requires additional
663 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
665 * Read-only stdio streams now use mmap to speed up operation by eliminating
666 copying and buffer underflows. To use add 'm' to the mode string of
667 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
669 * The malloc functions were completely rewritten by Wolfram Gloger based
670 on Doug Lea's malloc-2.7.0.c.
672 * Isamu Hasegawa contributed a completely new and POSIX-conformant
673 implementation of regex.
675 * Bruno Haible upgraded the iconv and locale implementation to support
676 Unicode 3.2.
678 * Contents of the LC_* and LANG environment variables in the CEN style are
679 not recognized anymore. It never was used. Change by Ulrich Drepper.
681 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
682 thread-local storage (TLS) ABI on some platforms.
683 Changes by Ulrich Drepper. SH support by Kaz Kojima.
685 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
686 EUC-JISX0213, and TSCII.
688 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
689 BSD-compatible interface for getting all network interface addresses.
690 Implementation for IPv4 by Roland McGrath.
692 * Loading of locale data is faster due to the introduction of a locale
693 archive. Implemented by Roland McGrath and Ulrich Drepper.
695 * Startup times are significantly reduced by not using exported functions
696 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
697 and Ulrich Drepper.
699 * Steven Munroe contributed a port to PowerPC64/Linux.
700 \f
701 Version 2.2.6
703 * The Hurd now uses the GNU libio implementation of stdio rather than the
704 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
706 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
707 with the same behavior as the Linux system call of the same name.
708 \f
709 Version 2.2.5
711 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
712 128-bit long double format.
714 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
715 IBM1161, and IBM1162 charsets.
717 * Andreas Jaeger contributed a port to x86-64/Linux.
719 * Peter Bruin contributed a port to PowerPC/Hurd.
721 * libc functions using I/O streams now can handle wide-oriented streams
722 as well.
724 * optimizations in the dynamic linker. Binaries created by recent binutils
725 versions start up quicker due to reduced time spent on relocations.
727 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
728 \f
729 Version 2.2.4
731 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
732 asinh, atanh, j0 for the 128-bit long double format.
734 * Bruno Haible updated all the code handling Unicode in some form to
735 support Unicode 3.1.
737 * Speed of regex for single-byte locales is back to previous levels.
738 Patch by Isamu Hasegawa.
740 * Alpha, SPARC, and IA-64 now also using floating stacks.
742 * Startup time of internationalized applications greatly improved through
743 iconv cache. Use iconvconfig to generate the cache file.
744 Contributed by Ulrich Drepper.
746 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
747 severe performance problems. Patch by David Mosberger.
749 * The Hurd port got a lot more functionality like AIO, various stdio
750 extensions, etc. Mainly done by Roland McGrath.
752 * mtrace can now lookup symbols in shared libraries.
753 \f
754 Version 2.2.3
756 * Intel's IA-64 math library is largely integrated. It provides fast and
757 accurate implementatations for most basic and standard math functions
758 in float, double, and long double format.
760 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
761 and asin for the 96-bit long double format and asin, log, tan for the
762 128-bit long double format.
764 * The beginning of a last-bit accurate math library by IBM Haifa were added.
765 The basic double functions exist today. Contributed by Abraham Ziv
766 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
767 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
769 * An asynchronous name lookup library was added. The interface is designed
770 after POSIX AIO. The proposal was circulated beforehand to get comments.
771 No negative ones came in. Implemented by Ulrich Drepper.
773 * Port to S390/64bit contributed by Martin Schwidefsky
774 <schwidefsky@de.ibm.com>.
776 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
777 of functions for Linux/IA-64.
779 * The RPC code is now thread safe. Threads can now use the same service
780 of different services at the same time. Patch by Eric Norum
781 <eric.norum@usask.ca> with some help by Ulrich Drepper.
783 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
784 family of functions for Linux/S390.
786 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
787 of functions for Linux/x86.
789 * Port to Linux/CRIS contributed by Axis Communications.
790 \f
791 Version 2.2.2
793 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
794 we can now check for namespace violations and missing declarations. The
795 result is that almost all headers are now Unix-compliant (as defined in
796 the upcoming XPG6). The negative side is that some programs might need
797 corrections, too, if they depend on the incorrect form of the headers in
798 previous versions which defined too many symbols and included too many
799 other headers.
801 * regex now handles multibyte character sets correctly.
802 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
804 * iconv (the program) does now conform to the upcoming XPG6 and handles
805 charmaps. Instead of the charset names the path of charmaps can be
806 provided and the conversion happens based on this data.
807 Contributed by Ulrich Drepper.
809 * The locale program now provides detailed information about the installed
810 locales. While
812 locale -a
814 only lists the names of the supported locales
816 locale -a --verbose
818 provides details such as country, language, and codeset name.
819 Contributed by Ulrich Drepper.
820 \f
821 Version 2.2.1
823 * The gencat program now parses the input file according to the charset
824 selected by the LC_CTYPE category. This is important for stateful
825 character sets. To make generating catalogs easier there is a way
826 to overwrite the charset selected by the locale: before the first
827 message or $ quote line the catalog can contain a line like
829 $ codeset=ISO-8859-2
831 to select the charset (ISO-8859-2 in this case).
833 Implemented by Shinya Hanataka and Ulrich Drepper.
835 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
836 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
837 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
839 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
840 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
842 * The LANGUAGE environment variable is now ignored unless the locale is
843 changed from the default "C" locale.
845 * The usual bug fixes.
846 \f
847 Version 2.2
849 * Greg McGary added runtime support for bounds checking using gcc's
850 new -fbounded-pointers option. ix86 target is complete. PowerPC
851 is in progress.
853 * Thorsten Kukuk added secure mode support to nscd.
855 * The Berkeley db libraries have been removed.
857 Related, the nss_db module is now in a separate package since it
858 obviously requires a database library being available.
860 * Wide character I/O streams implemented by Ulrich Drepper.
862 * Functions from the extended socket API added by Ulrich Drepper.
864 * Functions feenableexcept and fedisableexcept to control the
865 behaviour of individual exceptions have been added by Andreas Jaeger.
867 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
869 * The resolver code has been updated from bind 8.2.3-T5B which supports
870 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
871 and Mark Kettenis.
873 This change could in some situations effect backward compatibility. Since
874 now `_res' is a thread-local instead of a global variable, modifying it
875 in one thread does not have any effect in other threads.
877 The resolver library was also extended to allow IPv6 as the transport
878 protocol for the requests. This work was done by Stig Venaas.
880 * Compatibility code for K&R C compilers has been removed from the
881 header files. A ISO C compiler is needed to use the library
882 (conforming to either C89 or C99 standard).
884 * Complete rewrite of the localedef program to support multibyte character
885 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
886 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
887 Implemented by Ulrich Drepper.
889 Bruno Haible significantly improved the generation and use of the data
890 structures for the wide character tables.
892 * Plural handling in gettext implemented by Ulrich Drepper.
894 * The utmp daemon has been removed.
896 * The port to MIPS-Linux has been finished by Andreas Jaeger.
898 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
899 and Yutaka Niibe.
901 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
903 * POSIX barriers implemented by Kaz Kylheku.
905 * POSIX spawn function family implemented by Ulrich Drepper.
907 * POSIX spinlocks are now available.
909 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
911 * the configure option --enable-kernel=X.Y.Z allows to strip out
912 compatibility for kernel versions before X.Y.Z. This is currently only
913 implemented for Linux.
915 * the sockaddr_in6 structure changed. The IPv6 working group added a new
916 field sin6_scope_id. This means that all programs using IPv6 should be
917 recompiled. Don't expect binary compatibility with previous glibc
918 versions.
920 * various conversion modules for IBM character sets contributed by
921 Masahide Washizawa.
923 * IA-64 port by Jes Sorensen and HJ Lu.
925 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
926 Compiling the GNU C Library for Linux/ia64
927 ******************************************
929 Please refer to the file INSTALL in the same directory as you found
930 this file for general information about configuring and compiling
931 glibc.
933 For general inquiries about glibc under Linux/ia64 please use the
934 following mailing list linux-ia64@linuxia64.org or one of the relevant
935 glibc mailing lists.
937 Recommended Tools for Compilation
938 =================================
940 In order for glibc-2.2 to build correctly on the ia64 you need at
941 least the following versions of the GNU tools (the :
943 * The Cygnus toolchain snapshot for the ia64 as of August 4
944 including the provided set of patches. It is however recommend
945 you use the October 24 toolchain snapshot or a more recent version.
947 OR alternatively you can try the following (the Cygnus toolchain is
948 the recommended solution):
950 * GCC and binutils, GAS and GNU LD out of CVS from
951 sources.redhat.com as of August 28, 2000 or later. The CVS tree
952 may require special patches to work properly on the ia64.
954 Configuring and compiling GNU Libc for Linux/ia64
955 =================================================
957 The library requires Linux kernel version 2.4.0-test4-000728 or
958 later to funtion properly. Besides that it support for debug libraries
959 is currently untested. Hence the following options
960 are required for configuring the library:
962 --disable-debug --enable-kernel=2.4.0
964 It is also important that you make sure the library picks up the
965 appropriate kernel header files, if you do not have recent enough
966 kernel headers in /usr/src/linux/include, you should use the
967 --with-headers=<path> option to specify the location.
969 As an example I personally use the following options to configure
970 the library:
972 --disable-debug
973 --disable-cvs
974 --enable-kernel=2.4.0
975 --host=ia64-linux
976 --enable-add-ons=yes
977 --prefix=/usr
978 --with-headers=/home/jes/linux/include
981 Good luck
983 Jes Sorensen <jes@linuxcare.com>,
984 November 14th, 2000
985 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
986 \f
987 Version 2.1.3
989 * bug fixes
991 \f
992 Version 2.1.2
994 * bug fixes
996 \f
997 Version 2.1.1
999 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1001 * New xdr functions are added; some rpc functions are now 64bit clean.
1003 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1005 * Fixed known incompatibilities with glibc 2.0.
1007 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1009 * Optimized a number of functions (especially the ELF dynamic loader).
1011 * Update timezone data files.
1013 * lots of charmaps corrections
1015 * some new locale definitions and charmaps
1017 \f
1018 Version 2.1
1020 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1021 conform to POSIX member type requirements. Symbol versions have been
1022 adjusted as needed within the library, and for direct use by applications,
1023 but there is potential for problems if third-party libraries use
1024 struct timeval as part of their interface. This does not present
1025 a problem for X and other "essential" system libraries.
1027 * An additional locale model to support C++ Standard Library locale
1028 model and probably more was implemented by Ulrich Drepper.
1030 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1031 symbol level.
1033 * Miles Bader provided the `argp' function family to support hierachical
1034 command line argument parsing, layered on top of getopt.
1036 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1038 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1039 numbers.
1041 * scanf recognizes the %a and %A format for scanning floating point numbers.
1043 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1044 information and interfaces for the available integer types.
1046 * about 130 new math functions were added to implement the ISO C9x math
1047 library.
1049 * the new header <complex.h> contains definitions of the complex math
1050 functions from ISO C 9X.
1052 * the new header <tgmath.h> defines generic macros to use complex or
1053 real valued functions.
1055 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1057 * Andreas Jaeger provided a test suite for the math library.
1059 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1061 * Ulrich Drepper added character set conversion functions (iconv).
1063 * Optimized string functions have been added.
1065 * The localedata addon is now part of glibc.
1067 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1069 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1070 daemon for NSS (nscd).
1072 Missing a better place here are some numbers on improvements. Under
1073 Linux 2.1.125 un-tar-ing the kernel sources takes
1075 user system wall
1077 using local files 12.19s 6.88s 22.91s
1079 using NIS 13.92s 8.91s 26.34s
1081 using NIS & nscd 10.37s 7.34s 25.30s
1083 using NIS+ 27.57s 30.37s 640.46s
1085 using NIS+ & nscd 10.25s 7.83s 26.51s
1087 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1089 Keep in mind that non-namelookup related operations dominate above times.
1090 It was just a common complain that using NIS+ unpacking the kernel is
1091 horribly slow.
1093 [1] The old nscd implementation is not available anymore since it was
1094 distributed with glibc up to version 2.0.98 and thus is now replaced.
1096 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1098 * Mark Kettenis provided a Hesiod NSS module.
1100 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1101 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1103 * rcmd can now handle netgroups (Dick Streefland).
1105 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1106 Bambrough.
1108 * Support for the IPv6 protocol has been added to the socket API, as per the
1109 latest draft standards.
1111 * Support for Linux 2.2 has been added.
1113 * Interface changes relative to the latest 2.0.x release:
1114 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1115 addseverity NEW: Unix98
1116 alphasort64 NEW: LFS
1117 argp_err_exit_status NEW: argp, GNU ext
1118 argp_error NEW: argp, GNU ext
1119 argp_failure NEW: argp, GNU ext
1120 argp_help NEW: argp, GNU ext
1121 argp_parse NEW: argp, GNU ext
1122 argp_program_bug_address NEW: argp, GNU ext
1123 argp_program_version NEW: argp, GNU ext
1124 argp_program_version_hook NEW: argp, GNU ext
1125 argp_state_help NEW: argp, GNU ext
1126 argp_usage NEW: argp, GNU ext
1127 authdes_create NEW: Secure RPC
1128 authdes_getucred NEW: Secure RPC
1129 authdes_pk_create NEW: Secure RPC
1130 backtrace NEW: GNU ext.
1131 backtrace_symbols NEW: GNU ext.
1132 backtrace_symbols_fd NEW: GNU ext.
1133 cacos NEW: ISO C 9x
1134 cacosf NEW: ISO C 9x
1135 cacosh NEW: ISO C 9x
1136 cacoshf NEW: ISO C 9x
1137 cacoshl NEW: ISO C 9x
1138 cacosl NEW: ISO C 9x
1139 capget NEW: kernel
1140 capset NEW: kernel
1141 carg NEW: ISO C 9x
1142 cargf NEW: ISO C 9x
1143 cargl NEW: ISO C 9x
1144 casin NEW: ISO C 9x
1145 casinf NEW: ISO C 9x
1146 casinh NEW: ISO C 9x
1147 casinhf NEW: ISO C 9x
1148 casinhl NEW: ISO C 9x
1149 casinl NEW: ISO C 9x
1150 catan NEW: ISO C 9x
1151 catanf NEW: ISO C 9x
1152 catanh NEW: ISO C 9x
1153 catanhf NEW: ISO C 9x
1154 catanhl NEW: ISO C 9x
1155 catanl NEW: ISO C 9x
1156 cbc_crypt NEW: Secure RPC
1157 ccos NEW: ISO C 9x
1158 ccosf NEW: ISO C 9x
1159 ccosh NEW: ISO C 9x
1160 ccoshf NEW: ISO C 9x
1161 ccoshl NEW: ISO C 9x
1162 ccosl NEW: ISO C 9x
1163 cexp NEW: ISO C 9x
1164 cexpf NEW: ISO C 9x
1165 cexpl NEW: ISO C 9x
1166 cimag NEW: ISO C 9x
1167 cimagf NEW: ISO C 9x
1168 cimagl NEW: ISO C 9x
1169 clearerr_locked REMOVED
1170 clntunix_create NEW: sunrpc ext
1171 clog NEW: ISO C 9x
1172 clog10 NEW: ISO C 9x
1173 clog10f NEW: ISO C 9x
1174 clog10l NEW: ISO C 9x
1175 clogf NEW: ISO C 9x
1176 clogl NEW: ISO C 9x
1177 conj NEW: ISO C 9x
1178 conjf NEW: ISO C 9x
1179 conjl NEW: ISO C 9x
1180 cpow NEW: ISO C 9x
1181 cpowf NEW: ISO C 9x
1182 cpowl NEW: ISO C 9x
1183 cproj NEW: ISO C 9x
1184 cprojf NEW: ISO C 9x
1185 cprojl NEW: ISO C 9x
1186 creal NEW: ISO C 9x
1187 crealf NEW: ISO C 9x
1188 creall NEW: ISO C 9x
1189 creat64 NEW: LFS
1190 csin NEW: ISO C 9x
1191 csinf NEW: ISO C 9x
1192 csinh NEW: ISO C 9x
1193 csinhf NEW: ISO C 9x
1194 csinhl NEW: ISO C 9x
1195 csinl NEW: ISO C 9x
1196 csqrt NEW: ISO C 9x
1197 csqrtf NEW: ISO C 9x
1198 csqrtl NEW: ISO C 9x
1199 ctan NEW: ISO C 9x
1200 ctanf NEW: ISO C 9x
1201 ctanh NEW: ISO C 9x
1202 ctanhf NEW: ISO C 9x
1203 ctanhl NEW: ISO C 9x
1204 ctanl NEW: ISO C 9x
1205 des_setparity NEW: Secure RPC
1206 ecb_crypt NEW: Secure RPC
1207 endutxent NEW: Unix98
1208 exp10 NEW: ISO C 9x
1209 exp10f NEW: ISO C 9x
1210 exp10l NEW: ISO C 9x
1211 exp2 NEW: ISO C 9x
1212 exp2f NEW: ISO C 9x
1213 exp2l NEW: ISO C 9x
1214 fattach NEW: STREAMS
1215 fdetach NEW: STREAMS
1216 fdim NEW: ISO C 9x
1217 fdimf NEW: ISO C 9x
1218 fdiml NEW: ISO C 9x
1219 feclearexcept NEW: ISO C 9x
1220 fegetenv NEW: ISO C 9x
1221 fegetexceptflag NEW: ISO C 9x
1222 fegetround NEW: ISO C 9x
1223 feholdexcept NEW: ISO C 9x
1224 feof_locked REMOVED
1225 feraiseexcept NEW: ISO C 9x
1226 ferror_locked REMOVED
1227 fesetenv NEW: ISO C 9x
1228 fesetexceptflag NEW: ISO C 9x
1229 fesetround NEW: ISO C 9x
1230 fetestexcept NEW: ISO C 9x
1231 feupdateenv NEW: ISO C 9x
1232 fflush_locked REMOVED
1233 ffsl NEW: GNU ext.
1234 ffsll NEW: GNU ext.
1235 fgetpos64 NEW: LFS
1236 fgets_unlocked NEW: GNU ext.
1237 fileno_locked REMOVED
1238 fma NEW: ISO C 9x
1239 fmaf NEW: ISO C 9x
1240 fmal NEW: ISO C 9x
1241 fmax NEW: ISO C 9x
1242 fmaxf NEW: ISO C 9x
1243 fmaxl NEW: ISO C 9x
1244 fmin NEW: ISO C 9x
1245 fminf NEW: ISO C 9x
1246 fminl NEW: ISO C 9x
1247 fmtmsg NEW: Unix98
1248 fopen64 NEW: LFS
1249 fputc_locked REMOVED
1250 fputs_unlocked NEW: GNU ext.
1251 fread_unlocked NEW: GNU ext.
1252 freopen64 NEW: LFS
1253 fseeko NEW: Unix98
1254 fsetpos64 NEW: LFS
1255 fstatfs64 NEW: LFS
1256 fstatvfs NEW: Unix98
1257 fstatvfs64 NEW: LFS
1258 ftello NEW: Unix98
1259 ftello64 NEW: LFS
1260 ftruncate64 NEW: LFS
1261 ftw64 NEW: LFS
1262 fwrite_unlocked NEW: GNU ext.
1263 gai_strerror NEW: IPv6
1264 gamma_r REMOVED
1265 gammaf_r REMOVED
1266 gammal_r REMOVED
1267 getchar_locked REMOVED
1268 getdate NEW: Unix98
1269 getdate_err NEW: Unix98
1270 getdate_r NEW: GNU ext.
1271 getmsg NEW: STREAMS
1272 getnameinfo NEW: IPv6
1273 getnetname NEW: Secure RPC
1274 getpmsg NEW: STREAMS
1275 getpt NEW: Unix98 PTY
1276 getrlimit64 NEW: LFS
1277 getutxent NEW: Unix98
1278 getutxid NEW: Unix98
1279 getutxline NEW: Unix98
1280 glob64 NEW: GNU ext.
1281 globfree64 NEW: GNU ext.
1282 gnu_get_libc_release NEW: GNU ext.
1283 gnu_get_libc_version NEW: GNU ext.
1284 grantpt NEW: Unix98 PTY
1285 host2netname NEW: Secure RPC
1286 iconv NEW: iconv
1287 iconv_close NEW: iconv
1288 iconv_open NEW: iconv
1289 if_freenameindex NEW: IPv6
1290 if_indextoname NEW: IPv6
1291 if_nameindex NEW: IPv6
1292 if_nametoindex NEW: IPv6
1293 in6addr_any NEW: IPv6
1294 in6addr_loopback NEW: IPv6
1295 inet6_isipv4mapped NEW: IPv6
1296 isastream NEW: STREAMS
1297 iswblank NEW: GNU ext.
1298 key_decryptsession NEW: Secure RPC
1299 key_decryptsession_pk NEW: Secure RPC
1300 key_encryptsession NEW: Secure RPC
1301 key_encryptsession_pk NEW: Secure RPC
1302 key_gendes NEW: Secure RPC
1303 key_get_conv NEW: Secure RPC
1304 key_secretkey_is_set NEW: Secure RPC
1305 key_setnet NEW: Secure RPC
1306 key_setsecret NEW: Secure RPC
1307 llrint NEW: ISO C 9x
1308 llrintf NEW: ISO C 9x
1309 llrintl NEW: ISO C 9x
1310 llround NEW: ISO C 9x
1311 llroundf NEW: ISO C 9x
1312 llroundl NEW: ISO C 9x
1313 log2 NEW: ISO C 9x
1314 log2f NEW: ISO C 9x
1315 log2l NEW: ISO C 9x
1316 lrint NEW: ISO C 9x
1317 lrintf NEW: ISO C 9x
1318 lrintl NEW: ISO C 9x
1319 lround NEW: ISO C 9x
1320 lroundf NEW: ISO C 9x
1321 lroundl NEW: ISO C 9x
1322 lseek64 NEW: LFS
1323 makecontext NEW: Unix98
1324 mempcpy NEW: GNU ext.
1325 mmap64 NEW: LFS
1326 moncontrol REMOVED
1327 modify_ldt NEW: kernel
1328 nan NEW: ISO C 9x
1329 nanf NEW: ISO C 9x
1330 nanl NEW: ISO C 9x
1331 nearbyint NEW: ISO C 9x
1332 nearbyintf NEW: ISO C 9x
1333 nearbyintl NEW: ISO C 9x
1334 netname2host NEW: Secure RPC
1335 netname2user NEW: Secure RPC
1336 nexttoward NEW: ISO C 9x
1337 nexttowardf NEW: ISO C 9x
1338 nexttowardl NEW: ISO C 9x
1339 nftw NEW: Unix98
1340 nftw64 NEW: LFS
1341 open64 NEW: LFS
1342 passwd2des NEW: Secure RPC
1343 pow10 NEW: GNU ext.
1344 pow10f NEW: GNU ext.
1345 pow10l NEW: GNU ext.
1346 pread NEW: Unix98
1347 pread64 NEW: LFS
1348 printf_size NEW: GNU ext.
1349 printf_size_info NEW: GNU ext.
1350 profil_counter REMOVED
1351 pthread_mutexattr_getkind_np REPLACED
1352 pthread_mutexattr_setkind_np REPLACED
1353 ptsname NEW: Unix98 PTY
1354 ptsname_r NEW: Unix98 PTY
1355 putc_locked REMOVED
1356 putchar_locked REMOVED
1357 putgrent NEW: GNU ext.
1358 putmsg NEW: STREAMS
1359 putpmsg NEW: STREAMS
1360 pututxline NEW: Unix98
1361 pwrite NEW: Unix98
1362 pwrite64 NEW: LFS
1363 readdir64 NEW: LFS
1364 readdir64_r NEW: LFS
1365 remquo NEW: ISO C 9x
1366 remquof NEW: ISO C 9x
1367 remquol NEW: ISO C 9x
1368 round NEW: ISO C 9x
1369 roundf NEW: ISO C 9x
1370 roundl NEW: ISO C 9x
1371 rtime NEW: GNU ext.
1372 scalbln NEW: ISO C 9x
1373 scalblnf NEW: ISO C 9x
1374 scalblnl NEW: ISO C 9x
1375 scandir64 NEW: LFS
1376 sendfile NEW: kernel
1377 setcontext NEW: Unix98
1378 setrlimit64 NEW: LFS
1379 setutxent NEW: Unix98
1380 sighold NEW: Unix98
1381 sigignore NEW: Unix98
1382 sigqueue NEW: POSIX.1b
1383 sigrelse NEW: Unix98
1384 sigset NEW: POSIX.1b
1385 sigtimedwait NEW: POSIX.1b
1386 sigwaitinfo NEW: POSIX.1b
1387 sincos NEW: GNU ext.
1388 sincosf NEW: GNU ext.
1389 sincosl NEW: GNU ext.
1390 statfs64 NEW: LFS
1391 statvfs NEW: Unix98
1392 statvfs64 NEW: LFS
1393 strcasestr NEW: GNU ext.
1394 strtoimax NEW: ISO C 9x
1395 strtoumax NEW: ISO C 9x
1396 strverscmp NEW: GNU ext.
1397 svcauthdes_stats NEW: Secure RPC
1398 svcunix_create NEW: sunrpc etx
1399 svcunixfd_create NEW: sunrpc ext
1400 swapcontext NEW: Unix98
1401 tcgetsid NEW: Unix98 PTY
1402 tdestroy NEW: GNU ext.
1403 tgamma NEW: ISO C 9x
1404 tgammaf NEW: ISO C 9x
1405 tgammal NEW: ISO C 9x
1406 tmpfile64 NEW: LFS
1407 trunc NEW: ISO C 9x
1408 truncate64 NEW: LFS
1409 truncf NEW: ISO C 9x
1410 truncl NEW: ISO C 9x
1411 umount2 NEW: kernel
1412 unlockpt NEW: Unix98 PTY
1413 updwtmpx NEW: Unix98
1414 user2netname NEW: Secure RPC
1415 utmpxname NEW: Unix98
1416 versionsort NEW: GNU ext.
1417 versionsort64 NEW: GNU ext.
1418 waitid NEW: Unix98
1419 wcscasecmp NEW: GNU ext.
1420 wcsncasecmp NEW: GNU ext.
1421 wcsnlen NEW: GNU ext.
1422 wcstoimax NEW: ISO C 9x
1423 wcstoll NEW: ISO C 9x
1424 wcstoull NEW: ISO C 9x
1425 wcstoumax NEW: ISO C 9x
1426 wcswcs NEW: Unix98
1427 wordexp NEW: POSIX.2
1428 wordfree NEW: POSIX.2
1429 write_profiling REMOVED
1430 xdecrypt NEW: Secure RPC
1431 xdr_authdes_cred NEW: Secure RPC
1432 xdr_authdes_verf NEW: Secure RPC
1433 xdr_cryptkeyarg NEW: Secure RPC
1434 xdr_cryptkeyarg2 NEW: Secure RPC
1435 xdr_cryptkeyres NEW: Secure RPC
1436 xdr_getcredres NEW: Secure RPC
1437 xdr_key_netstarg NEW: Secure RPC
1438 xdr_key_netstres NEW: Secure RPC
1439 xdr_keybuf NEW: Secure RPC
1440 xdr_keystatus NEW: Secure RPC
1441 xdr_netnamestr NEW: Secure RPC
1442 xdr_sizeof NEW: Secure RPC
1443 xdr_unixcred NEW: sunrpc ext
1444 xencrypt NEW: Secure RPC
1445 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1446 \f
1447 Version 2.0.6
1449 * more bug fixes
1451 \f
1452 Version 2.0.5
1454 * more bug fixes
1456 * inet_ntoa is thread-safe
1458 * updwtmp is moved from libutil to libc
1460 * rewrite of cbrt function
1462 * update of timezone data
1463 \f
1464 Version 2.0.4
1466 * more bug fixes
1467 \f
1468 Version 2.0.3
1470 * more bug fixes
1471 \f
1472 Version 2.0.2
1474 * more bug fixes
1476 * add atoll function
1478 * fix complex problems in Berkeley DB code
1480 * fix math functions
1481 \f
1482 Version 2.0.1
1484 * fixed lots of header problems (especially Linux/GNU specific)
1486 * dynamic loader preserves all registers
1488 * Roland McGrath provided support for handling of auxiliary objects in
1489 the ELF dynamic loader.
1491 * support for parallel builds is improved
1492 \f
1493 Version 2.0
1495 * GNU extensions are no longer declared by default. To enable them you
1496 must define the macro `_GNU_SOURCE' in your program or compile with
1497 `-D_GNU_SOURCE'.
1499 * The library has changed from using GNU ld symbol aliases to using weak
1500 symbols where available. The ELF object file format supports weak
1501 symbols; GNU ld also supports weak symbols in the a.out format. (There
1502 is also now support for other GNU ld extensions in ELF. Use the
1503 `--with-elf' option to configure to indicate you have ELF, and
1504 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1505 of many files which contained only symbol aliases, reducing the size of
1506 the source and the compiled library; many other files were renamed to
1507 less cryptic names previously occupied by the symbol alias files.
1508 There is a new header file <elf.h> for programs which operate on
1509 files in the ELF format.
1511 * Converted to Autoconf version 2, so `configure' has more options.
1512 Run `configure --help' to see the details.
1514 * The library can now be configured to build profiling, highly-optimized
1515 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1516 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1517 `configure' enable building these extra libraries. The shared library is
1518 built by default when using both ELF and GNU ld. When shared libraries
1519 are enabled, the new library `-ldl' is available for arbitrary run-time
1520 loading of shared objects; its interface is defined in <dlfcn.h>. The
1521 new header file <link.h> gives access to the internals of the run-time
1522 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1523 application of same name on other systems and it provides information
1524 about dynamically linked binaries.
1526 * The C library now provides the run-time support code for profiling
1527 executables compiled with `-pg'. Programs can control the profiling code
1528 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1529 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1530 the support for this file format was contributed by David Mosberger-Tang.
1532 * The math code has been replaced with a math library based on fdlibm from
1533 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1534 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1535 functions. The math functions now reside in a separate library, so
1536 programs using them will need to use `-lm' their linking commands.
1538 * John C. Bowman contributed optimized ix87 assembler inline functions.
1540 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1541 mechanism similar to that found in Solaris 2. This is now used for the
1542 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1543 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1544 file controls what services are used for each individual database. This
1545 works by loading shared libraries with names specified in `nsswitch.conf',
1546 so service modules can be changed or added at any time without even
1547 relinking any program. Currently there are the file, db, and NIS based
1548 NSS services available.
1550 * The new functions `strtoq' and `strtouq' parse integer values from
1551 strings, like `strtol' and `strtoul', but they return `long long int' and
1552 `unsigned long long int' values, respectively (64-bit quantities).
1554 * The new functions `strtof' and `strtold' parse floating-point values from
1555 strings, like `strtod', but they return `float' and `long double' values,
1556 respectively (on some machines `double' and `long double' are the same).
1558 * Ulrich Drepper has contributed new implementations of the floating-point
1559 printing and reading code used in the `printf' family of functions and
1560 `strtod', `strtof', and `strtold'. These new functions are perfectly
1561 accurate, and much faster than the old ones.
1563 * The implementation of the POSIX locale model was completely rewritten by
1564 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1565 to compile the POSIX locale definition.
1567 * The former dummy implementations of the strcoll and strxfrm function are
1568 now replaced by fully functional code contributed by Ulrich Drepper. The
1569 collation information comes from the POSIX locale definitions.
1571 * The new header <langinfo.h> defines an interface for accessing
1572 various locale-dependent data (using the locale chosen with `setlocale').
1574 * Ulrich Drepper has contributed a new suite of functions for operation on
1575 wide-character and multibyte-character strings, in <wchar.h>;
1576 and classification and case conversion of wide characters, in <wctype.h>.
1577 These new functions are conforming to the ISO C, Amendement 1 specification.
1579 * There is now a second implementation of the standard I/O library available.
1580 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1581 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1583 * You can now use positional parameter specifications in format strings
1584 for the `printf' and `scanf' families of functions. For example,
1585 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1586 ``Number 6, Mr Jones''. This is mainly useful when providing different
1587 format strings for different languages, whose grammars may dictate
1588 different orderings of the values being printed. To support this
1589 feature, the interface for `register_printf_handler' has changed; see
1590 the header file <printf.h> for details.
1592 * The `printf' and `scanf' families of functions now understand a new
1593 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1594 to group numbers as indicated by the locale; for `scanf' and friends, this
1595 says to accept as valid only a number with all the proper grouping
1596 separators in the right places. In the default "C" locale, numbers are
1597 not grouped; but locales for specific countries will define the usual
1598 conventions (i.e. separate thousands with `,' in the US locale).
1600 * The pgrp functions have been regularized, slightly incompatibly but much
1601 less confusingly. The core functions are now `getpgid' and `setpgid',
1602 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1603 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1604 provided for compatibility. There is no longer an incompatible `getpgrp'
1605 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1607 * The new header file <fts.h> and suite of functions simplify programs that
1608 operate on directory trees. This code comes from 4.4 BSD.
1610 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1611 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1612 NSS scheme used in glibc.
1614 * There is a new malloc debugging hook `__memalign_hook'.
1616 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1617 `unsigned int' in <sys/types.h>. These are for compatibility only and
1618 their use is discouraged.
1620 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1621 done differently, so that it works even without GNU ld.
1623 * New function `euidaccess' checks allowed access to a file like `access',
1624 but using the effective IDs instead of the real IDs.
1626 * The time zone data files have been updated for the latest and greatest
1627 local time conventions of the countries of the world.
1629 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1630 see <dirent.h>.
1632 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1633 for formatting floating-point numbers. They are provided only for
1634 compatibility; new programs should use `sprintf' instead. There are
1635 also equivalent function for the `long double' floating-point type and
1636 all functions also exist in a reentrant form.
1638 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1639 functions for maintaining the login-record files (primarily of use to
1640 system programs such as `login'), and convenient functions for
1641 allocating and initializing a pseudo-terminal (pty) device.
1643 * Ulrich Drepper has contributed new support for System V style
1644 shared memory and IPC on systems that support it.
1646 * Ulrich Drepper has contributed several miscellaneous new functions found
1647 in System V: The `hsearch' family of functions provide an effective
1648 implementation of hash tables; `a64l' and `l64a' provide a very simple
1649 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1650 number generator.
1652 * Ulrich Drepper has contributed new reentrant counterparts for the
1653 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1655 * Ulrich Drepper has contributed new, highly-optimized versions of several
1656 string functions for the i486/Pentium family of processors.
1658 * Ulrich Drepper has updated the Linux-specific code, based largely
1659 on work done in Hongjiu Lu's version of GNU libc for Linux.
1660 The GNU library now supports Linux versions 2.0.10 and later,
1661 using the ELF object file format (i[3456]86-*-linux).
1663 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1665 * David Mosberger-Tang and Richard Henderson have ported the C library
1666 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1667 dynamic linking support for ELF/Alpha.
1669 * Richard Henderson contributed several Alpha optimized assembler function
1670 for arithmetic and string handling.
1672 * Ulrich Drepper has contributed a new set of message catalog functions to
1673 support multiple languages using the <libintl.h> interface, for use with
1674 his new package GNU gettext. Translation volunteers have contributed
1675 catalogs of the library's messages in Spanish, German, and Korean.
1677 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1678 program and the `catgets' function for reading the catalog files it
1679 creates. (The <libintl.h> interface is preferred; we include the
1680 <nl_types.h> interface using `catgets' only for source compatibility with
1681 programs already written to use it.)
1683 * New header file <values.h> gives SVID-compatible names for <limits.h>
1684 constants.
1686 * Various new macros, declarations, and small header files for compatibility
1687 with 4.4 BSD.
1689 * New function `group_member' is a convenient way to check if a process has
1690 a given effective group ID.
1692 * When using GCC 2.7 and later, the socket functions are now declared in a
1693 special way so that passing an argument of type `struct sockaddr_in *',
1694 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1695 `struct sockaddr *' type, does not generate a type-clash warning.
1697 * New function `error' declared in header file <error.h> is a convenient
1698 function for printing error messages and optionally exiting; this is the
1699 canonical function used in GNU programs. The new functions `err', `warn',
1700 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1701 doing the same thing.
1703 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1704 POSIX.2 `glob' function to do ~ and {...} expansion.
1706 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1707 `clearenv' which is used in POSIX.9 is also available.
1709 * New function `getsid' returns session ID number on systems that support it.
1711 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1712 files <db.h> and <mpool.h> provide a rich set of functions for several
1713 types of simple databases stored in memory and in files, and <ndbm.h> is
1714 an old `ndbm'-compatible interface using the `db' functions. Link with
1715 `-ldb' to get these functions.
1717 * New macro `strdupa' copies a string like `strdup', but uses local stack
1718 space from `alloca' instead of dynamic heap space from `malloc'.
1720 * New function `strnlen' is like `strlen' but searches only a given maximum
1721 number of characters for the null terminator. `stpncpy', `strndup' and
1722 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1723 function.
1725 * New function `statfs' in header <sys/statfs.h>.
1727 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1728 provide convenient functions for operating on blocks of null-terminated
1729 strings.
1731 * A new suite of functions in <utmp.h> handle all the details of reading
1732 and writing the utmp file.
1734 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1735 Thorsten Kukuk.
1737 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1738 completely POSIX compliant and also implemented the extended functionality
1739 to handle alternate digit representation and alternate era date formats.
1741 * Ulrich Drepper provided an implementation of the `strptime' function
1742 defined in XPG4.2 which transforms a string into a `struct tm' value.
1744 * Paul Eggert provided the tzselect shell script as part of the timezone
1745 code. The shell script makes it easy to select the correct timezone
1746 specification.
1748 * The implementation of the malloc family of functions is completely replaced
1749 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1750 The implementation uses the mmap function (if available) and it is
1751 optimized for the use in multi threaded programs.
1753 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1754 functions. This new functionality is usable by specifying a special
1755 salt string and it is compatible with implementation on *BSD systems.
1757 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1758 `getsubopt' to handle second level command line options, `bsd_signal'
1759 to access BSD style `signal' functionality, the obsolete `regexp' style
1760 expression matcher.
1762 * the `lchown' function is available on system which support this
1763 functionality.
1765 * The implementation of the shadow password handling function was contributed
1766 by Ulrich Drepper.
1768 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1770 * POSIX.1g support was added. The <sys/select.h> header is available,
1771 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1772 implementation of `getaddrinfo'.
1773 \f
1774 Version 1.09
1776 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1778 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1779 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1781 * The new function `daemon' from 4.4 BSD is useful for server programs that
1782 want to put themselves in the background.
1784 * Joel Sherrill has contributed support for several standalone boards that
1785 run without an operating system.
1787 * `printf', `scanf' and friends now accept a `q' type modifier for long
1788 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1790 * All of the code taken from BSD (notably most of the math and networking
1791 routines) has been updated from the BSD 4.4-Lite release.
1793 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1795 * The new functions `getdomainname' and `setdomainname' fetch or change the
1796 YP/NIS domain name. These are system calls which exist on systems which
1797 have YP (aka NIS).
1799 * The time zone data files have been updated for the latest international
1800 conventions.
1802 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1803 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1804 \f
1805 Version 1.08
1807 * The C library now includes support for Sun RPC, from Sun's free
1808 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1809 are included. (There is still no support for YP.)
1811 * Tom Quinn has contributed a port of the C library to SGI machines running
1812 Irix 4 (mips-sgi-irix4).
1814 * The new `lockf' function is a simplified interface to the locking
1815 facilities of `fcntl', included for compatibility.
1817 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1819 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1821 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1822 compatibility.
1824 * The error message printed by `assert' for a failed assertion now includes
1825 the name of the program (if using GNU ld) and the name of the calling
1826 function (with versions of GCC that support this).
1828 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1830 * The library now includes the <sys/mman.h> header file and memory
1831 management functions `mmap', `munmap', `mprotect', `msync', and
1832 `madvise', on systems that support those facilities.
1834 * The interface for `mcheck' has changed slightly: the function called to
1835 abort the program when an allocation inconsistency is detected now takes
1836 an argument that indicates the type of failure. The new function
1837 `mprobe' lets you request a consistency check for a particular block at
1838 any time (checks are normally done only when you call `free' or `realloc'
1839 on a block).
1841 * It is now possible to easily cross-compile the C library, building on one
1842 system a library to run on another machine and/or operating system. All
1843 you need to do is set the variable `HOST_CC' in `configparms' to the
1844 native compiler for programs to run on the machine you are building on (a
1845 few generator programs are used on Unix systems); set `CC' to the
1846 cross-compiler.
1848 * The new function `fexecve' (only implemented on the GNU system) executes
1849 a program file given a file descriptor already open on the file.
1850 \f
1851 Version 1.07
1853 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1854 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1856 * You can set the variable `libprefix' in `configparms' to specify a prefix
1857 to be prepended to installed library files; this makes it easy to install
1858 the GNU C library to be linked as `-lgnuc' or whatever.
1860 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1861 copies a limited number of characters from a string, and returns the
1862 address of the last character written.
1864 * You no longer need to check for whether the installed `stddef.h' is
1865 compatible with the GNU C library. configure now checks for you.
1867 * You can now define a per-stream `fileno' function to convert the
1868 stream's cookie into an integral file descriptor.
1870 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1871 allocates zero bytes of storage, and returns a unique pointer which
1872 you can pass to `realloc' or `free'. The behavior is undefined if
1873 you dereference this pointer.
1875 * The C library now runs on Sony NEWS m68k machines running either
1876 NewsOS 3 or NewsOS 4.
1878 * The new `syscall' function is a system-dependent primitive function
1879 for invoking system calls. It has the canonical behavior on Unix
1880 systems, including unreliable return values for some calls (such as
1881 `pipe', `fork' and `getppid').
1883 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1884 to `EAGAIN', which is the preferred name. On systems whose kernels
1885 use two distinct codes, the C library now translates EWOULDBLOCK to
1886 EAGAIN in every system call function.
1887 \f
1888 Version 1.06
1890 * The GNU C Library Reference Manual is now distributed with the library.
1891 `make dvi' will produce a DVI file of the printed manual.
1892 `make info' will produce Info files that you can read on line using C-h i
1893 in Emacs or the `info' program.
1894 Please send comments on the manual to bug-glibc-manual@gnu.org.
1896 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1898 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1900 * Jason Merrill has contributed a port to the Sequent Symmetry running
1901 Dynix version 3 (i386-sequent-dynix).
1903 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1904 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1906 * New function `memory_warnings' lets you arrange to get warnings when
1907 malloc is running out of memory to allocate, like Emacs gives you.
1909 * The C library now contains the relocating allocator used in Emacs 19 for
1910 its editing buffers. This allocator (ralloc) minimizes allocation
1911 overhead and fragmentation by moving allocated regions around whenever it
1912 needs to. You always refer to a ralloc'd region with a "handle" (a
1913 pointer to a pointer--an object of type `void **').
1915 * There is a new `printf' format: `%m' gives you the string corresponding
1916 to the error code in `errno'.
1918 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1919 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1920 pass, the `a' modifier says to fill in a `char **' you pass with a
1921 malloc'd string.
1923 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1924 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1925 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1927 * `mkstemp' is a traditional Unix function to atomically create and open a
1928 uniquely-named temporary file.
1929 \f
1930 Version 1.05
1932 * The standard location for the file that says what the local timezone is
1933 has changed again. It is now `/usr/local/etc/localtime' (or more
1934 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1936 * The distribution no longer contains any files with names longer than 14
1937 characters.
1939 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1940 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1942 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1943 \f
1944 Version 1.04
1946 * The configuration process has changed quite a bit. The `configure'
1947 script is now used just like the configuration scripts for other GNU
1948 packages. The `sysdeps' directory hierarchy is much rearranged.
1949 The file `INSTALL' explains the new scheme in detail.
1951 * The header files no longer need to be processed into ANSI C and
1952 traditional C versions. There is just one set of files to install, and
1953 it will work with ANSI or old C compilers (including `gcc -traditional').
1955 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1956 MIPS DECStation running Ultrix 4.
1958 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1959 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1960 made itself into a shared library.
1962 * Yet further improved support for the i386, running 4.3 BSD-like systems
1963 (such as Mach 3 with the Unix single-server), or System V.
1965 * New function `strncasecmp' to do case-insensitive string comparison
1966 with limited length.
1968 * New function `strsep' is a reentrant alternative to `strtok'.
1970 * New functions `scandir' and `alphasort' for searching directories.
1972 * New function `setenv' is a better interface to `putenv'.
1974 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1975 function for traversing a directory tree.
1977 * The GNU obstack package is now also part of the C library.
1978 The new function `open_obstack_stream' creates a stdio stream that
1979 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1980 formatted output directly to an obstack.
1982 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1983 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1985 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1987 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1988 things to your strings.
1990 * There are some new test programs: test-fseek, testmb, and testrand.
1992 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1993 These ports are not finished, but are a good starting place for really
1994 supporting those systems.
1996 * `/etc/localtime' is now the standard location for the file that says what
1997 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1998 This follows the general principle that `/etc' is the place for all local
1999 configuration files.
2001 * The C library header files now use `extern "C"' when used by the C++
2002 compiler, so the C library should now work with C++ code.
2004 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2005 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2006 in <strings.h>.)
2008 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2009 function which uses the `merge sort' algorithm, and is said to be
2010 significantly faster than the old GNU `qsort' function. Merge sort is
2011 now the standard `qsort' function. The new algorithm can require a lot
2012 of temporary storage; so, the old sorting function is called when the
2013 required storage is not available.
2015 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2016 provides the Unix `crypt' function, plus some other entry points.
2018 * The code and header files taken from 4.4 BSD have been updated with the
2019 latest files released from Berkeley.
2020 \f
2021 ----------------------------------------------------------------------
2022 Copyright information:
2024 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2026 Permission is granted to anyone to make or distribute verbatim copies
2027 of this document as received, in any medium, provided that the
2028 copyright notice and this permission notice are preserved,
2029 thus giving the recipient permission to redistribute in turn.
2031 Permission is granted to distribute modified versions
2032 of this document, or of portions of it,
2033 under the above conditions, provided also that they
2034 carry prominent notices stating who last changed them.
2035 \f
2036 Local variables:
2037 version-control: never
2038 fill-column: 76
2039 End: