Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 | 0.5.0 - initial release 0.5.9 - signal ABI bugfix, various cleanup and fixes: sigset_t was wrongly defined as 1024 bytes instead of 1024 bits, breaking the intended ABI compatibility with the LSB/glibc sigaction structure. users should upgrade immediately and rebuild any libraries or object files that might be using the incorrect definitions. improved security against DoS with tcb shadow passwords by checking that the file opened was really an ordinary file. fixed a bug in the implementation of atomic ops that could have allowed the compiler to incorrectly reorder them (in practice, gcc with the default settings on i386 was not reordering them). greatly improved conformance to the C and POSIX standards regarding what the standard header files make visible. _POSIX_C_SOURCE is now needed to get POSIX functions in standard C headers, and _XOPEN_SOURCE or _GNU_SOURCE are required to get XSI interfaces or GNU extensions, respectively. many internal improvements have been made to the syscall-related code in preparation for porting to x86_64 and other archs. 0.6.0 - x86_64 port, various important bugs fixed new x86_64 (amd64) architecture port, contributed by Nicholas J. Kain, along with PORTING guide. source tree layout and build system have been improved to accommodate further ports. various bugs that were introduced while making the headers respect C and POSIX namespace standards have been fixed. conformance to the standards has been improved. fixed an inefficiency in qsort that triggered a bug (occasionaly internal compiler error) in some versions of gcc. fixed a major bug in the printf %n specifier that prevented it from working and caused memory corruption. 0.7.0 - major improvements to posix conformance and completeness implemented posix shared memory and semaphore interfaces. implemented all remaining required pthread and clock interfaces. major fixes to signal semantics. greatly improved temporary file name generation for safety against denial of service due to intentional name collisions. added syscall wrappers for the linux inotify interface. malloc(0) now returns a non-null pointer. fixed printf %n specifier (again), pthread_once (it was always hanging), and non-default-type mutex behavior. added ucontext/sigcontext support in headers to facilitate building libgcc with dwarf2 unwind support, and possibly other low-level tools. improved musl-gcc compiler wrapper. implemented many small missing functions here and there, minor header fixes, etc. 0.7.1 - improvements to completeness, bug fixes implemented flockfile, wprintf, and robust mutex functions. fixed stack corruption bug in times(), minor header bugs, and some error return value bugs in thread interfaces. 0.7.5 - new features, major optimization, and robustness implemented POSIX timers. optimized and simplified many thread-related functions. eliminated resource leak races in thread cancellation. (almost all existing implementations, including glibc, have these leaks.) overhauled stdio implementation to take advantage of readv/writev for reduced syscall load, and improved stdio's handling of error status. added syscall header and interface for applications to use and greatly simplified internal system for making syscalls. strangthened tmpnam/tempnam/tmpfile filename generation and made the straight C functions not depend on POSIX symbols. fixed pthread cancellation ABI on i386 to match the LSB/glibc ABI better double-free handling in malloc various minor bug fixes 0.7.6 - major bug fixes fixed rare but serious under-allocation bug in malloc. fixed signedness bug in strchr that prevented finding high bytes. fixed serious parsing bugs in strtold. fixed statvfs syscall (it was always failing with EINVAL). fixed race condition in set*id() functions with threads (possible deadlock). further audit still needed though. fseek no longer sets the stream error flag on failed seeks (this was wrong and broke some programs, notably GNU m4). nl_langinfo is no longer a dummy function. (the functionality was previously implemented but accidentally left unused). various small fixes have been made to the implementations and prototypes for nonstandard and obsolete functions 0.7.7 - more bug fixes and program-compatibility improvements fixed floating point formatting and rounding bugs in printf. fixed broken %N$ positional argument specifiers in printf. fixed misaligned read/overread bug in strchr which could lead to crashes scanning tiny strings at the end of a page when the next page is not readable, or on archs (not yet supported) that forbid misaligned reads. fixed breakage of statvfs on x86_64 fixed crash in getmntent_r fixed bug in POSIX timers created with NULL sigevent argument improved semaphore performance, and sem_wait is now interruptable by signals, as required by POSIX. added many compatibility and system-level interfaces, increasing the proportion of busybox that works with musl. 0.7.8 - more bug fixes and compatibility improvements fixed problems with ipv6 dns and address printing code that made ipv6 support practically unusable, and some other getaddrinfo bugs. fixed broken sendmsg/recvmsg functions on x86_64 (caused by incorrect msghdr structure). fixed broken sigsetjmp asm on x86_64. worked around a problem with input buffering on terminals reblocking after getting a blank line, due to a bug in the linux readv syscall. various improvements to the "rsyscall" system used to implement threaded setuid, setgid, etc. exiting/cancelling the a timer handler thread no longer kills the timer. fixed incorrect trailing zeros on some %g conversions in printf. fixed buggy byte-swapping functions and moved them to inlines in byteswap.h. many small improvements to header/application compatibility, support for nonstandard macros, etc. 0.7.9 release notes new pthread cancellation implementation: - safe against resource-leak/side-effect-leak race conditions - safe against interruption by signal handlers - reduced bloat in all cancellable functions - reduced bloat for blocking cancellation new interfaces implemented: - realpath (limited functionality) - wordexp (limited functionality) - flock (nonstandard) - forkpty (nonstandard) - posix_fadvise - posix_fallocate general bug fixes: - syslog function failure to communicate with syslogd - bug in siginfo_t definition if wait.h was included before signal.h - incorrect struct definitions for most of sysv ipc - pthread_exit/cancel on timer handler wrongly destroying the timer - linux dup2 ebusy workaround - obscure issues in non-threaded programs using some pthread functions - getopt_long allowed mismatch in last char of option name - incorrect parsing of obscure ip address forms - initgroups not working reliably (uninitialized var) - shadow pass treating empty expiry field as pass-expired-in-1970 - bogus longjmp if pthread_exit was called from cancellation handlers x86_64-specific bug fixes: - fcntl file locking - thread stack alignment - broken select timeouts due to incorrect timeval definition 0.7.10 release notes new features: - ipv6 numeric string parsing - eventfd syscall wrappers optimizations: - new qsort implementation using the smoothsort algorithm - much smaller/faster sigset_t handling functions - lowered spin count before futex wait in synchronization functions general bug fixes: - incorrect floating point round-to-even behavior in printf - major bugs in pthread barrier implementation - off-by-one error in scanf %n results - scanf failure to report EOF when scanning for literal text - minor missing/incorrect prototype issues - dependency on undefined call order in fclose compiler issue workarounds: - incorrect inlining of variadic functions on recent gcc versions - pcc preprocessor bug with recursive macro expansion 0.7.11 release notes new features: - integrated dynamic linker - dynamic loading (dlopen/dlsym) (for dynamic-linked programs only) - XSI search.h API - POSIX message queues - POSIX spawn interfaces - BSD pseudo-random number generator API (random/srandom/initstate/etc.) - floating point environment (limited usefulness due to gcc bugs) general bug fixes: - possible crashes with wordexp due to uninitialized variable - race condition in pthread_kill (also present and unfixed in glibc/nptl) - pthread exit destructors called too late - dangerous unbounded vla in glob - brk/sbrk legacy functions mismatching legacy semantics - wcsncpy dest buffer overflow - strncat and wcsncat possible overflows due to double-termination 0.7.12 release notes new features: - support for textrels in shared objects - rpath support in dynamic linker - stdio_ext.h functions (for better gnu software compatibility) bug fixes: - some compilers miscompiling dlopen due to misuse of longjmp - safe handling of invalid long-double bit patterns (affects printf) - workaround for bugs in linux mprotect syscall - thread-safety for random() functions - various minor issues 0.8.0 release notes new features: - chinese and japanese legacy charset support in iconv - zero-syscall clock_gettime support (dynamic-linked x86_64 only) - futex-based locking for stdio (previously used spinlocks) - LD_PRELOAD and RTLD_NEXT support in dynamic linker - strptime (mostly working but incomplete) - posix aio (mostly working but not entirely conformant) - memory streams (fmemopen, open_memstream, ...) - stub/dummy implementations for various useless legacy functions - if_nameindex security hardening: - setuid, etc. should not longer be able to "partially fail" with threads - ensure suid programs start with fd 0,1,2 open - improved openpty/forkpty failure checks threads/synchronization bug fixes: - dangerous spurious wakeup in pthread_join lead to early return - race condition enabling async cancellation (delayed/lost cancellation) - destruction/unmapping race conditions in semaphores, mutexes, rwlocks - recursive rwlock_rdlock deadlock when a writer is waiting - race condition in sigqueue with fork - timer expiration thread exit wasn't running dtors - timer threads weren't blocking signals - close was wrongly cancellable after succeeding on some devices - robust mutex list was not reset on fork general bug fixes: - incorrect logic in fread (spurious blocking; crash on write-only files) - many corner cases and overflow cases for strtol-family functions - various printf integer formatting issues with flags/width/precision - incorrect iconv return value on failure - broken FD_* macros on 64-bit targets - clock function returning wrong value (real time not cpu time) - siglongjmp signal mask clobbering (off-by-one pointer error) - dynamic linker weak symbol resolution issues - fdopendir failure to set errno - various minor header fixes 0.8.1 release notes bug fixes: - mismatching prototypes caused build failure on 64-bit - other minor prototype errors in the headers have been fixed - various other small omissions fixed 0.8.2 release notes new features: - ptrace syscall support bug fixes: - const error (only a warning with many compilers) in lio_listio - minor portability fixes aimed at supporting new arch targets 0.8.3 release notes new features: - arm port (experimental) - better musl-gcc wrapper script for building against musl - added clone system call bug fixes: - numerous header file typos, copy/paste errors, omissions - statfs and statvfs ABI are now LSB-conformant (and actually work) 0.8.4 release notes new features: - arm dynamic linker support - process-shared pthread barriers now work - efficient futex-requeue-based cond var broadcast - more optional cancellation points are now cancellable - printf accepts null pointers with %s, prints as "(null)" - recursive mutexes are now fully reentrant - __cxa_atexit support - real vfork - dynamic linker now gold-compatible - prlimit syscall - support for large limits with setrlimit/getrlimit (even on 32-bit) - glob now supports GLOB_PERIOD option (GNU extension) bug fixes: - many serious issues in condition variables - rwlock failure-to-wake deadlock issues - various small header files bugs/omissions - wrong failure return for pthread_create - path handling issues on execvp - lock count corruption with robust recursive mutexes on owner death - integer overflows in atoi, etc. reading most-negative value - spurious mremaps on every realloc of large memory chunks - pthread cancellation failure in single-threaded programs security: - avoid fd_set overflow in dns lookups 0.8.5 release notes new features: - stdio operations are now cancellable (only when low-level io happens) - global ctor/dtor support in main program start code and shared libs - dynamic linker support for PIE executables (but missing startup code) - vfork support on x86_64 - complete set of locale_t functions (all ignore the locale argument) - provide define float_t and double_t in math.h - lighter/faster cancellation cleanup handler register/unregister bug fixes: - gcc wrapper now supports -shared, -nostdlib, -nostartfiles - removed one wrongly-classified character from iswspace set (zwsp) - fixed crashes in dns lookup on some errors, e.g. resolv.conf missing - "make install" no longer tries to build shared libc if disabled - ptrace argument handling bugs fixed - work around visibility-hidden bugs in gcc 3.x - fix thread-pointer-loss issue when it's initialized in signal handlers - various minor typo/misc fixes in headers compatibility: - glob behaves more like traditional implementations w.r.t. GLOB_MARK - added legacy futimes, lutimes functions - more compatibility macros in sys/param.h (nonstandard header) - setfs[ug]id syscall wrappers (linux specific) - fgetpwent function (nonstandard) - utmp.h matches traditional version more closely - caddr_t now matches glibc type (void * instead of long) - dummy (always-fail) dlopen and dlsym functions for static linked programs - [efg]cvt functions (previously posix, removed from standard) - get_current_dir_name function (nonstandard) 0.8.6 release notes bug fixes: - fix crash in dns lookups for all static-linked, non-threaded programs 0.8.7 release notes new features: - c++ support with g++'s libstdc++ - c99 math library (float, long double, complex, etc.) - numerous wchar_t functions - a64l, l64a functions - getdate function compatibility: - c89 compatibility in math.h - syscall.h alias for sys/syscall.h - memory.h alias for string.h - getcwd supports null buffer argument (auto-allocation) bug fixes: - major fenv (floating point environment) fixes and optimizations - strptime mishandling of day/month names - strtoull wrongly rejecting the highest 16 possible values as overflow - math.h constant expression fixes for INFINITY/NAN/etc. - scanf mishandling of "0" with "%x" 0.8.8 release notes new feature: - major math correctness and performance improvements - many math functions implemented in asm for i386 - some math functions (mostly long double) in asm for x86_64 - new floating point parser/converter with correct rounding - implement wcstod, wcstof, and wcstold - new scanf implementation - cleaner, faster, more correct - minimal/incomplete strfmon implementation compatibility: - header fixes for c++ - regex code resync with TRE; support common regex extensions - support for compiling apps with gcc's -funsigned-char - sysconf now returns dynamic limits for open files, processes - give dlerror proper error status stickiness - make alloca work even with -fno-builtin critical security fixes: - stack-based buffer overflow in fprintf on unbuffered files other bug fixes: - rare gcc register allocation (miscompilation) bug in syscall wrappers - printf was rejecting the valid (but redundant) %lf format specifier - fixed big data bloat (missing const) in math functions - many math fixes related to floating point exceptions and rounding - corrected DECIMAL_DIG definitions - tgammal was wrongly setting global signgam - crash in wordfree with uninitialized we_offs - fix wordexp not null-initializing the we_offs initial slots 0.8.9 release notes bug fixes: - major breakage in strtol and family: failure to accept leading spaces - incorrect name for MATH_ERREXCEPT in math.h compatibility: - prototypes for a few additional nonstandard functions 0.8.10 release notes new features: - correct over/underflow detection (ERANGE setting) for strtod - new musl-gcc wrapper, specfile based, faster and more robust - meaningful return strings for dlerror - new iswalpha, iswpunct, and wcwidth; sync'd to Unicode 6.1 - towupper/towlower sync'd with Unicode 6.1 - new futex-based libc-internal locks instead of spinlocks - experimental stack protector support (minimal; no random canary) - experimental gdb shared library tracking support compatibility: - getusershell family functions - getresuid and getresgid syscall wrappers - byte swapping macros in endian.h - getdtablesize was wrongly declared in unistd.h for _XOPEN_SOURCE bug fixes: - iconv_open wrongly rejecting most dest charsets (broken in 0.8.0) - sysconf failure when correct value is -1 (broken in 0.8.8) - scanf and strtod family functions overreading past NAN (4 bytes vs 3) - scanf and strtod wrongly treating "0.00000000001", etc. as 0 - many bugs in towupper/towlower (never seriously tested before) - int8_t definition was wrong when gcc -funsigned-char was used 0.9.0 release notes license change: MIT new features: - configure script, improved build system - full stack protector support - PIE support on x86 and x86_64 - new O(1) space, O(nm) time implementation of fnmatch - improved support for sse2 floating point mode on x86 compatibility: - added linux unshare syscall - exp10/pow10 function - sqrtl support on arm (previously missing) - removed minimal linux/*.h headers that could conflict with real ones - support for _LARGEFILE64_SOURCE (mapped to standard fcns with #define) - better c89 compatibility in headers - stub versions of sched_* functions (previously missing) - pthread stacks no longer executable (compat with hardened kernels) - new ar.h and lastlog.h (legacy junk) - various other header improvements optimization: - additional x86_64 math asm - better formula for acos use in i386 asm bug fixes: - large (up to a few %) errors in strtod for certain values due to bug - mbsnrtowcs and wcsnrtombs were completely broken (bad exit logic) - wide printf %.0s could fail due to uninitialized variable - missing dlerror strings for dlsym in some cases 0.9.1 release notes new features: - dynamic linker can be used as a program to explicitly load/run executables - ldd command, usable by making a symlink to the dynamic linker named ldd bug fixes: - major bugs in POSIX BRE parsing inherited from TRE regex code - character matching bug in regex on ARM: WCHAR_MAX was assumed to be signed - various obscure fixes related to signals and pthread cancellation - remquot subnormal remainder bug - buggy macros in (nonstandard) sys/param.h - major bug in pthread barriers on x86_64 (out of bounds write) - utimes (legacy) function was making wrong syscall (utime instead of utimes) - avoid using "old" syscalls that don't exist on arm eabi linux - broken strrchr(str, 0) - broken mbsinit(0) - broken wcsncmp - syntax error in nextafter macro in tgmath.h - missing support for -pie in musl-gcc wrapper - abort could wrongly fail to terminate the program in some cases compatibility: - increase default thread stack size to 80k - support _BSD_SOURCE feature test macro - support _LARGEFILE64_SOURCE feature test macro (merely exposes alt names) - lots of legacy-compatibility improvements in headers - various minor GNU extension functions - sysconf reporting number of available CPUs/cores - various LSB/glibc ABI interfaces aimed at compatibility with some binaries - use fistpll asm mnemonic instead of fistpq for compat with clang 0.9.2 release notes bug fixes: - pointer overflow in printf (crash on 32bit userspace, 64bit kernel) - printf %ls over-read bug - strtod failure to read -0x as negative zero - flush stdio after dtors, not before - wrong file position for buffered input streams on exit - popen was broken when stdin/out were already closed - broken wcwidth tables (missing many characters) - fwrite: wrong return value of partial/failed write - broken utf-16 conversions - bad buffer length check in getlogin_r - bad perror("") behavior; did not match perror(0) - broken sysinfo syscall/structure - stdint.h const macro signedness bugs - broken include guards in some headers - bogus localeconv values - cancellation-safety for popen and pclose - fma corner cases wrong on i386 - fcntl F_GETOWN errno missing on failure. - char signedness bug in dynamic linker broke dlopen on arm - mprotect failure in dynamic linker caused crash instead of error build system: - configure check to work around hacked-up gcc versions - test for old binutils that can't support musl dynamic linker compatibility: - make _GNU_SOURCE imply _LARGEFILE64_SOURCE - syscall wrapper for lots of nonstandard and/or legacy linux syscalls - versionsort stub - timegm function (inverse of gmtime) - various minor header tweaks - make __freading/__fwriting semantics match traditional ones - added gnulib-compatibility stdio interfaces - added pthread_attr_setstack interface - make strerror_r return partial string when buffer is too small - duplocale should accept LC_GLOBAL_LOCALE - align ptsname_r to upcoming posix requirements - support invalid ld80 bit patterns as extra nans. 0.9.3 release notes new features: - mips (32-bit, o32 abi) port, currently static-linked only - newly overhauled crypt implementation - improved library pathname info for debugger from the dynamic linker - getaddrinfo (and getservbyname) now support /etc/services lookups - pipe2 syscall wrapper - splice and vmsplice syscall wrappers - syscall wrappers for extended attribute interfaces - ioperm/iopl syscall wrappers on archs that support these operations bug fixes: - dlsym RTLD_NEXT library search order was wrong - multiple dlopen pathname and library name handling errors - potential race condition in detached thread exit - broken internal-lock-handling code not updated for futex-based __lock - sem_trywait spurious EAGAIN errors arising from CAS failures - workaround kernel bug in cmsghdr size_t vs socklen_t issue (64-bit) - getservby* crash on null protocol argument - logic error skipping failed interfaces in if_nameindex - various minor header/declaration related issues arm-specific bug fixes: - broken crti/crtn startup code when gcc crtbegin/end files are linked - sigsetjmp tail call optimization failure broke the function - incorrect little-endian assumptions in atomic.h functions - use of blx instruction in asm (not supported on pre-v5 arm) build system: - only use expensive -ffloat-store cflag on archs/compilers that need it - make musl-gcc wrapper support -lgcc (mainly for self-hosting) 0.9.4 release notes new features: - blowfish crypt - dynamic linking on mips - arm hard float support - BSD fgetln function in stdio - minor header improvements for compatibility - support for CROSS_COMPILE variable to configure - legacy significand function - better support for SUSv3-targeted programs performance: - assembly (string ops based) memcpy for i386 and x86_64 - reduce printf overhead bug fixes: - failure of strtod, etc. to process extremely long strings correctly - read overrun in wcsstr for short needles - various major mips issues that prevented most software from working - erroneous floating point exception behavior in i386/x86_64 exp asm - crashes on null arguments to legacy err.h functions - various header file/type issues - extremely rare/obscure race condition with robust mutexes - crypt now never returns null (most programs don't check, then crash) - missing xattr remove functions 0.9.5 release notes compatibility and headers: - POSIX+XSI+BSD features enabled by default with no macros defined - most programs can now be built without adding -D_GNU_SOURCE - added C99 restrict keyword where required in all prototypes - greater C89 compatibility - cleaner, more-compatible public syscall.h - many other header fixes - support for compiling musl with clang/llvm new features: - sha 256/512 password hash functions in crypt - GNU hash support in dynamic linker - partial C11 coverage - dladdr function added - dynamic linker reports all errors instead of exiting on first error - syscall wrappers added for most remaining linux syscalls - provide POSIX O_SEARCH open mode using linux O_PATH bug fixes: - most atexit functions were being skipped when exiting - some BSD functions were not being exposed under _BSD_SOURCE - issues loading ssp-protected DSO into non-ssp program with dlopen debloating: - eliminate .eh_frame (10-15% loaded size bloat) - optimal inline syscall asm for ARM and MIPS - no longer force -O3 for shared libs 0.9.6 release notes bug fixes: - serious breakage in definition of O_ACCMODE mask (missing a bit) new features: - O_EXEC open mode - md5 crypt hash function 0.9.7 release notes new features: - thread-local storage (__thread/_Thread_local) - microblaze port - getopt option parsing reset support - vsyscall (sysenter, etc.) support on i386 (faster syscalls) - memmem function (GNU extension) - mips fenv support - accept "nan(n-char-sequence)" in strtod/scanf family functions - configure now supports compiling with pcc quality and correctness improvements: - close-on-exec flag for all library-internal file descriptors - cancellation-safety and corner-case overhaul in shm_open/sem_open - close EINTR vs EINPROGRESS issue - mark binaries as not requiring executable stack - better gdb compatibility in dynamic linker - support recursive dlopen (dlopen called from constructors) - posix_spawn/system/popen no longer momentarily double commit charge - all stdio functions wait for locks bug fixes: - broken sysvipc *ctl functions on 64-bit archs - broken shmdt on some archs - getaddrinfo failure with port "0" - dirname handling of trailing slash - vfork race in posix_spawn 0.9.8 release notes new features: - powerpc port - dl_iterate_phdr interface - added mips-specific syscalls - thread priority scheduling - C11 CMPLX macro in complex.h - x86 port io functions in sys/io.h compatibility: - improved headers for trace/debugging/machine-access - stub functions for unsupported thread-related functionality bug fixes: - numerous math bugs (mostly exception flags and excess-precision issues) - register clobber error in i386 vsyscall asm (did not affect most callers) - various incorrect definitions in mips headers - broken dlsym asm on mips - empty prefix handling in configure script (--prefix="") - ldso search path logic issues - lock handling for stdio memory streams at exit time - invalid SO_REUSEPORT definition in socket.h (not supported by Linux) - broken redirection attempt to /dev/null in configure script 0.9.9 release notes new features: - tgamma implementation (no longer lgamma wrapper with low precision) - various gnu extensions: sigandset, sigorset, etc. - futimesat function (obsolete) - various linux syscalls: arch_prctl, personality, etc. optimizations: - hyperbolic, inverse hyperbolic, and inverse trig, bessel functions - is* comparison macros in math.h now expand inline properly library bugs fixed: - calling getenv from shared library ctors was broken - invalid read in mmap-serviced aligned_alloc/memalign (possible crash) - wrong errno result in fallback path of pipe2 - various math functions raising spurious exceptions - mmap errno value on invalid offsets - backwards alignment logic in strlcpy - integer overflows in bessel functions - large (up to 60ulp) error in erfcf - dlsym/dlclose crashing on invalid library handles - failure to handle arch variations for cloexec/nonblock flags - lio_listio wrong return value for LIO_WAIT mode - dladdr failure to resolve PLT addresses - time_t/struct tm conversion off-by-one-day in december - malloc corruption on nonstandard kernels with non-page-aligned brk arch-specific bugs fixed: - arm ctors/dtors were not working with recent gcc versions - arm and mips setjmp/longjmp wrongly saved/restored fenv state - loss of precision in i386/x86_64 expl header bugs fixed: - incorrect PRI/SCN macros in inttypes.h for some types - arm sys/user.h regressions - failure of offsetof() to be an integer constant expression - tgmath return value type problems header compatibility improvements: - _GNU_SOURCE now enables everything; _ALL_SOURCE also works - scsi/scsi.h and scsi/sg.h are now provided - additional MAP_* flags for mmap - additional F_* commands and flags for fcntl - additional socket option, IPPROTO_* values, and multicase macros - thread-related waitpid flags - EHWPOISON added to errno.h - additional macros for mount, swap, and reboot operations - expose additional link.h structures - always ensure sizeof(NULL)==sizeof(void *), even in c++ - additional flags for poll, epoll, inotify, timerfd, timex, dlfcn - register names in signal.h/ucontext.h for x86 - ipc.h ipc_perm nonstandard struct field name compatibility improve 0.9.10 release notes new features: - getifaddrs - pthread_getattr_np (widely used by garbage collectors) - mkostemps, mkostemp, mkstemps functions (mkostemp is future-POSIX) - strcasestr and strverscmp (previously stubs) improvements: - major performance improvements in mbtowc - avoid filling caller-provided thread stacks with large TLS - debloat unnecessary static buffers - robust posix_spawn based on CLONE_VM instead of vfork - new system() and popen() based on posix_spawn - better strerror strings - further emulation of atomic close-on-exec/nonblock options for old kernels - provide macro constants for new-ish kernel features compatibility: - several nonstandard but widely-available pwd/grp/shadow functions - program_invocation_[short_]name - re-added useconds_t type used by some programs - some legacy arpa headers - dn_skipname function (legacy resolver API) - additional ABI aliases for supporting glibc-linked libraries/binaries general bugs fixed: - stale locks and bogus munmap call when pthread_create fails - uninitialized argument to munmap when dynlink load_library fails - incorrect error returns in gethostby*_r - memory leak in gethostbyname family - blank ai_canonname in getaddrinfo for non-CNAME records - undefined HZ macro in scsi/sg.h - wrong return value for wmemmove on forward-copy - namespace conformance in strings.h - various utmp.h bugs - unnecessary DT_SONAME in libc.so caused problems on some systems - multiple bugs in syslog, some possibly dangerous - non-functional setpriority function - slight mishandling of 0xf5 byte in UTF-8 decoder - misaligned memory accesses in mbsrtowcs arch-specific bugs fixed: - crash in shared library loading on arm - missing __aeabi_atexit needed by arm eabi - wrong float_t definition on x86_64 - various low-impact type size/alignment mismatches in some headers - epoll struct alignment wrong on non-x86[_64] archs - broken pipe2 fallback code on mips with old kernels 0.9.11 release notes new features: - %m allocation modifier for scanf - week number and ISO week-based-year functionality in strftime - per-process and per-thread cputime clocks - ethernet address conversion interfaces - legacy classful ipv4 network address interfaces - minimal dlinfo function (nonstandard) other improvements: - dynamic linker path file can now use newlines to separate paths - math optimizations for archs with extended precision (i386) - musl-gcc wrapper now exposes gcc's intrinsic headers - quality of rand and rand_r pseudo-random sequences - support for large device minor numbers (greater than 8 bits) - various header conformance and compatibility fixes directly user-visible bugs fixed: - scanf losing characters on unbuffered streams and fmemopen streams - failure of mbsrtowcs to record stop position when dest is full - failure of iconv to convert to legacy codepages - non-working pthread_[sg]etschedparam functions (wrong syscall arguments) other potentially-serious bugs fixed: - resource leaks in sem_open - various bugs in thread exit synchronization - invalid access in aio notification after aiocb free/reuse - synchronization in dynamic linker when new thread dlopens during ctors - lack of error handling for failure to read dynamic linker path file - creation by mmap or shmget of objects larger than PTRDIFF_MAX minor conformance bugs fixed: - overflow handling for the clock function - workaround for incorrect exceptions in fma due to compiler bugs - workaround wrong kernel type for sem_nsems field in struct semid_ds arch-specific bugs fixed: - x86_64 sigsetjmp clobbered the signal mask rather than saving it - misaligned stack when calling ctors/dtors (crashing on x86_64) 0.9.12 release notes new features: - zoneinfo time zone support - PIE support on all supported archs - named sub-archs for endian and float ABI variants - improved support for non-root installs of the dynamic linker - ability to selectively build only performance-critical modules with -O3 - simple buffer overflow detection in free/realloc - inet_ntop now presents v4-mapped addresses in ::ffff:a.b.c.d form - ldd now reports libc and the dynamic linker in its output compatibility: - support for new init/fini array (needed for ctors/dtors on newer gcc) - C++ ABI fully matches glibc/LSB, at least on x86 - many added ABI compatibility symbols for using glibc-linked libs - support for STB_GNU_UNIQUE symbol bindings (found in some C++ libs) - macros/types for new Linux kernel features in headers bugs fixed: - crashes in scanf on literal mismatches (regression from adding %m) - dl_iterate_phdr was passing invalid phdr pointers to its callback - getaddrinfo with null host and AF_UNSPEC was failing to report IPv6 - integer overflows in date/time conversion code - misinterpretation of pre-1930s dates as post-2038 on 32-bit archs - make install failed to install bits headers if make was not run first - shm_open was wrongly cancellable - low- or no-impact heap corruption in memalign - explicitly running the dynamic linker on PIE programs did not work - missing macros and sysconf for some supported POSIX option groups - missing close-on-exec flags for several internal fd uses arch-specific bugs: - wrong SIG_ATOMIC_MIN/MAX macros on x86_64 - erfcl was missing on archs where long double is same as double - broken dynamic-model TLS in static-linked arm/mips/powerpc programs 0.9.13 release notes new features: - iconv support for EUC-KR and Big5 (including HKSCS) encodings - field widths (POSIX 2008 feature) in strftime - recursive rpath and $ORIGIN support in dynamic linker - cpu affinity interfaces - support for armhf (hardfloat) floating point environment (fenv) - support for SSE fenv on i386 (for apps using -mfpmath=sse -msse2) - strftime %s format (seconds since the epoch, future POSIX requirement) - configure script now saves its command line as a comment in config.mak - legacy functions valloc and euidaccess performance: - optimized asm memcpy for arm - optimized asm memset for i386 and x86_64 - optimized C versions of memcpy and memset for all archs - eliminated major spurious syscalls from posix_spawn - some math asm for armhf (hardfloat) workarounds for: - qemu-user's rt_sigaction syscall does not allow old to alias new - qemu-user's madvise always succeeds (broke pthread_getattr_np) - passing PT_INTERP to dlopen attempted to double-load libc - gcc 4.8.x generating self-referential (infinite recursion) memcpy/memset - linux's lack of support for fchdir, fchmod, fchown, fstat on O_PATH fds bugs fixed: - failure to honor flags for fchmodat and faccessat (linux syscall api flaws) - SIGEV_THREAD timer id corruption and race condition issues - timer thread TLS incorrectly keeping values from previous expiry run - ecvt/fcvt decimal position off-by-one - in symbol-versioned libs, symbol resolved to oldest instead of newest - posix_spawn not correctly reporting errno from exec failure - "make install" was not atomic (overwrote files rather than replacing) - integer overflows in strftime - unset/empty TZ variable was mishandled - strftime could crash if the struct tm did not have valid tm_zone field - failure of fenv functions to handle invalid arguments (required by ISO C) - failure of some math functions (C and i386 asm) to raise underflow flag - broken dn_expand function (previously not used internally) - race conditions with signals during fork - incorrect access check in mktemp (obsolete function) - unnecessary arbitrary limits on size of program headers in dynamic loader - text formatting bugs in output of err.h functions arch-specific bugs: - fesetenv(FE_DFL_ENV) crashed on i386 - breakage of arm crt code when libc is compiled as thumb - arm/armhf (hardfloat) misidentified by configure - ambiguity of wait (exit status) macros on mips with signal number 127 - wrong value of _NSIG and SIGRTMAX on mips 0.9.14 release notes bugs fixed: - failure to properly install dynamic linker with DESTDIR set (symlink wrong) - rare deadlock in libc-internal locking routines - dynamic linker used fallback paths wrongly on (possibly transient) errors - popen broken when stdin or stdout was already closed in parent - deadlock/memory-corruption in multithreaded set*id and setrlimit functions - realpath failed when file was not readable - readpath mistakenly had cancellation points in it - crashes in scanf with invalid %m conversion specifiers - misclassificiation of some invalid ld80 float representation in fpclassify - various overflow and underflow flag issues in math functions - domain handling errors for acoshf and acoshl - wrong values for some sysconf properties - lack of proper memory barriers on arm mips-specific bugs: - broken sysv ipc structures - multiple stack-related bugs in clone, leading to crashes in parent or child - overflow writing sigset_t in multithreaded set*id and setrlimit functions other improvements: - size and performance improvements to various math functions - wait.h as a compatibility alias for sys/wait.h - various header improvements - support for runtime-variable page size on archs that need it (mainly mips) 0.9.15 release notes new features: - support for mixing IPv4 and v6 nameserver addresses in resolv.conf - RFC 3678 multicast structures/macros in netinet/in.h - putspent and fgetspent functions (shadow password API) - timef function (obsolete, removed in POSIX 2008) - fanotify syscalls (Linux-specific feature) - semtimedop syscall (Linux-specific sysvipc extension) - quotactl syscall and header (filesystem quotas support) - drem and finite functions (obsolete BSD functions) - getloadavg function (non-standard) - herror function (non-standard and obsolete) - libc.so now stores and prints its version information - expose constants for new Linux features including O_TMPFILE - implement FNM_LEADING_DIR option to fnmatch (GNU extension) - posix_close function (accepted for inclusion in next POSIX issue) bugs fixed: - buffer overflow in mbsrtowcs - clobbering of gr_name in getgrnam_r and getgrgid_r - execle ignoring the environment argument - setenv crash on malloc failure - out-of-bounds access in fnmatch with FNM_PATHNAME and certain patterns - failure of malloc to set errno when failing to extend heap - incorrect errno value from getcwd with zero size - spurious failure in faccessat with AT_EACCESS flag with suid/sgid programs - several fd leaks due to missing close-on-exec flag - misspellings/typos in macro names in several headers - incorrect failure return value in inet_pton - various numeric ip address parsing and validation fixes - namespace conformance issues in several headers - minor header issues - zombie processes left by faccessat with AT_EACCESS - timezone file parser failing/crashing on 64-bit archs - hang in localtime with near-overflowing time_t values on 64-bit archs - timezone path search was only trying first path - incorrect handling of excessive-length TZ environment strings - timezone file loading was wrongly enforcing O_NOFOLLOW/rejecting symlinks - iswspace was wrongly returning true for the null character - various bugs in wordexp - putgrent could write corrupt lines after write failures - dn_expand misinterpreted in-packet offsets greater than 255 - spurious strftime/wcsftime failure on len+1==bufsize case - incorrect underflow flag in fma corner cases - log*(0) wrongly returned +inf in downward-rounding mode - failure of fchmod, fstat, fchdir, and fchown to produce EBADF arch-specific bugs fixed: - i386: failure of fesetround to set sse rounding mode - i386: floating point limit constants misinterpreted due to excess precision - powerpc: broken thread pointer access when compiled with clang - microblaze: dynamic linker entry point code possibly clobbering argv strict conformance issues: - NULL definition re-aligned with POSIX (requires (void *) cast) - alignment of math.h is* comparison functions with C11 annex F requirements 1.0.0 release notes new features: - support for mips softfloat ABI variant - legacy setkey and encrypt API for DES - support for BSD version of struct tcphdr in addition to GNU version - added ipv6 and icmpv6 protocol lookups to getprotoent-family functions new experimental ports: - sh (SuperH) - x32 (ILP32 ABI for x86_64) compatibility: - improved c89 compiler support in math.h - eliminate some compiler warnings in public headers - added some missing things for LFS64 APIs - added fallback emulation of accept4 for older kernels bugs fixed: - buffer overflow in printf when printing smallest denormal exactly - rounding errors in printf in some just-over-halfway cases - posix_spawn did not accept null pid pointer (crashed) - ftello gave incorrect result for unflushed append-mode streams - mishandling of n=0 case in wcsxfrm (wild buffer overrun) - possible system breakage during libc upgrade due to install.sh bugs - nftw FTW_MOUNT flag prevented walking any directories at all - ptsname/ptsname_r returned negated error codes - getprotoent function returned junk after listing valid protocols - wrong error code from readdir when the directory has been deleted - various prototype/argument-type fixes, mostly to legacy functions - various header namespace violations arch-specific bugs fixed: - fesetenv(FE_DFL_ENV) was broken on i386 and x86_64 - strerror(EDQUOT) did not work on mips - recvmsg/sendmsg were broken on powerpc - sysv ipc was broken on powerpc and mips - statfs/statvfs were broken on mips - sigaltstack was broken on mips 1.1.0 release notes new features: - relro memory protection in dynamic linker - malloc can now extend heap with mmap if brk fails - vdso clock_gettime/gettimeofday/time acceleration on x86_64 - thread/library-safe versions of search.h functions (nonstandard) - getauxval function (nonstandard) - sysconf extensions to query physical memory size bugs fixed: - floating point printf output corruption from carry into uninitialized slot - possible runaway carry overflow in printf floating point - printf %g failure to strip trailing zeros in some cases - search past end of haystack in memmem - off-by-one error in confstr return value - crashes in some near-empty static programs that use stack protector - deadlock race in pthread_once - non-working clock_gettime fallback for old kernels arch-specific bugs fixed: - crash from missing syscall asm register clobbers on real microblaze kernel - crash in all nontrivial dynamic linker use on microblaze - incorrect rlimit constants on mips - broken, possibly dangerous, use of getrlimit syscall on x32 in sysconf 1.1.1 release notes new features: - new options --preload and --library-path to dynamic linker - public execvpe function (nonstandard extension) - iconv support for cp437 and cp850 bugs fixed: - false negatives with some periodic needles in strstr, wcsstr, and memmem - crash on invalid zoneinfo files - incorrect zero-padding of some outputs for strftime %s specifier - misreporting of errors in configure script when $CC does not work at all - treating not-yet-implemented strptime specifiers as errors compatibility: - configure now detects serious constant-folding bug in gcc 4.9.0 - removed __yield symbol (unused) that clashed with some compilers - improvements to sysconf's handling of unsupported/invalid arguments arch-specific bugs fixed: - misdetection of superh ABI variant by configure on gcc 3.x - missing SO_RCVBUFFORCE and SO_SNDBUFFORCE in mips socket.h - build regression on armv6 and later with -mthumb 1.1.2 release notes new features: - multi-protocol matches (tcp and udp) in getaddrinfo - support for AI_V4MAPPED and AI_ALL flags to getaddrinfo - reverse name lookups from /etc/hosts - reverse service lookups from /etc/services - support for service aliases in /etc/services - ipsec and tunneling protocols to getprotoent-family functions - res_send, res_mkquery, res_querydomain, and dn_comp functions - ipv6 scope id handling for link-local scope addresses - previously-unimplemented %C and %y in strptime now work - vdso clock_gettime acceleration on i386 (new kernel feature) - better O_CLOEXEC/SOCK_CLOEXEC fallbacks for old kernels bugs fixed: - buffer overflow in dns response parsing (CVE-2014-3484) - possible infinite loop in dns response parsing - sendfile off_t 32/64-bit size mismatch - incorrect end pointer in some cases when wcsrtombs stops early - incorrect if_nametoindex return value when interface does not exist - dummy "ent" function aliases that possibly shadowed real ones - tmpfile fd leak on memory exhaustion - getaddrinfo returning EAI_NONAME for some transient failures arch-specific bugs fixed: - broken kernel side RLIM_INFINITY on mips - incorrect syscall argument 6/7 types for pselect on x32 1.1.3 release notes new features: - address sorting in getaddrinfo, etc. modeled on rfc 3484/6724 - default timezone taken from /etc/localtime when $TZ is unset - getopt double-colon extension for optional arguments - support for TLSDESC-based (gnu2) TLS dialect on i386 and x86_64 - sendmmsg/recvmmsg (linux-specific) - fmtmsg (last mandatory XSI function that was missing) compatibility: - treat dns rcode=2 as temporary failure, not negative result - working thread-pointer for pre-2.6 kernels on i386 - further ABI-compat symbols: __xmknod[at], __sysv_signal bugs fixed: - memmem false positives/false negatives/crashes from invalid logic - gethostby*_r not setting result pointer to null on failure - aliasing violations in syscall.h SYSLOG_NAMES feature - fanotify_mark syscall arguments wrong arch-specific bugs fixed: - various subtle relocation bugs in powerpc and sh dynamic linker 1.1.4 release notes new features: - experimental locale support for LC_MESSAGES and LC_TIME - non-stub gettext family functions for message translation - or1k (OpenRISC 1000) port - syslog options LOG_CONS and LOG_PERROR - issetugid function (from OpenBSD) - improved if_nameindex and getifaddrs functions compatibility: - work around bug #61144 in gcc 4.9.0 and 4.9.1 - support getauxval(AT_SECURE) even on kernels without AT_SECURE bugs fixed: - empty dynamic linker error messages (regression in 1.1.3) - if_nameindex omitted unconfigured and ipv6-only interfaces - incorrect return value for fwide function - failure of wide printf/scanf functions to set wide orientation - multiple issues in legacy function getpass - dynamic linker did not accept colon as a separator for LD_PRELOAD - errno clobber in syslog caused wrong output for %m specifier - crash in regexec for nonzero nmatch argument with REG_NOSUB - minor bugs in rarely-used nl_langinfo item lookups arch-specific bugs fixed: - broken relocations in mips dynamic linker (regression in 1.1.3) - register state corruption in setjmp asm for microblaze - broken struct stat st_ino field on microblaze - broken struct stat st_dev field on big endian mips - broken asm register constraints in atomics on powerpc - missing barriers in atomics on mips, powerpc, microblaze, and sh 1.1.5 release notes new features: - full C11 coverage (threads, UTF-16/32 API, timespec_get, etc.) - malloc_usable_size function (nonstandard) - support for new F_OFD_* fcntl operations (linux 3.15, POSIX-future) - new _DEFAULT_SOURCE feature test macro to request default profile performance: - private-futex support - redesigned cond var implementation with major performance improvement - tweaked spinning in userspace before performing futex waits bugs fixed: - failure of dn_expand to null-terminate name for crafted DNS packets - corruption of cond var mutex state when switching mutexes - use of uninitialized memory with application-provided thread stacks - false ownership of orphaned mutexes due to tid reuse - possible failure-to-wake for robust mutexes on owner death - subtle errors in robust mutex unrecoverable status handling - missing memory/compiler barrier spinning to obtain locks - wrong behavior in various zero-length stdio operations - buffer overflow in swab with odd argument - incorrect sequence generation in the rand48 family of prng functions - missing cancellation check in non-wait paths of sem_wait, pthread_join - missing barrier in pthread_once fast path - memory leak in regexec when input contains illegal sequence - various parser bugs in regcomp - wrong return value on overflow in some strtoul-family functions - broken CPU_EQUAL macro in sched.h - dlerror not working in static-linked programs - mishandling of negative non-whole-hour TZ offsets - incorrect case mappings for U+00DF - namespace pollution via accidentally-non-static function named "dummy" - missing __fpclassifyl and __signbitl definitions for ld64 archs 1.1.6 release notes new features: - getopt '-' flag for processing non-option arguments - getopt_long argument permutation extension - getopt_long abbreviated options - ns_parserr and related DNS-packet-parsing functions - fnmatch FNM_CASEFOLD extension - support for translation of getopt error messages - login_tty function (legacy) performance: - efficient atomics on armv7+ targets - pthread_once shrink-wrapping of fast path compatibility: - baseline arm binaries now work on new cpus/kernels without kuser_helper - dynamic linker now honors DT_RUNPATH without DT_RPATH (new binutils) - arm asm is now compatible with clang's internal assembler - suppress macro implementations of functions when headers are used in C++ - increased message length limit for syslog bugs fixed: - open ignored file creation mode argument for O_TMPFILE - wrong printf formatting for %#.0o with value zero - missing private state for uchar.h functions (null ps pointer) - sched_getaffinity left uninitialized data in output bit array - wrong return values for pthread_getaffinity_np and pthread_setaffinity_np - buggy handling of multibyte option chars with arguments in getopt - printf failed to report or stop on write errors - printf failed to honor '+' modifier when printing NANs - wcsnrtombs returned the wrong value in one code path - syslog failed to check for connect error - multi-threaded set*id() had spurious failures from ugly workaround code - various minor header conformance bugs (signedness, constant expressions, ...) arch-specific bugs fixed: - on or1k, some syscalls with 64-bit arguments were broken (misaligned) - usage of sahf instruction on x86_64 crashed on some early cpu models 1.1.7 release notes new features: - alternate passwd/group backend support via nscd protocol - masked cancellation mode extension (experimental) - aio cancellation - aarch64 port (experimental) performance: - significant memset asm optimizations on i386 and x86_64 compatibility: - suppress EINTR in semaphores for old kernels where futex restart is broken - always set optarg in getopt_long - support SOCK_RAW socket type in getaddrinfo - report success instead of EINPROGRESS when close is interrupted bugs fixed: - multithreaded set*id() was not async-signal safe, had various race bugs - getspnam_r returned results for partial username matches - wordexp bad character checker mis-counted parentheses - close on fd with pending aio could lead to file corruption - old aio implementation had numerous conformance bugs - malloc init code could deadlock due to race condition - pthread_exit did not disable cancellation - pthread_cond_wait could wrongly consume signal on cancellation - execvp wrongly stopped path search on EACCESS - fsync, fdatasync, and msync were not honored as cancellation points - fchmodat was subject to fd leak race (missing O_CLOEXEC) - fchmodat failed to report EOPNOTSUPP in race path - passwd/group lookup functions had various minor error-reporting bugs - isatty had false-positives/device-state-corruption for OSS sound devices - configure script failed to detect gcc with translated messages - FLT_ROUNDS macro failed to reflect rounding mode changes in fenv arch-specific bugs fixed: - mips fesetenv did not handle FE_DFL_ENV - mips POLLWRNORM and POLLWRBAND macros had wrong values - x32 pthread synchronization object type definitions were wrong - powerpc minimum signal stack size was insufficient 1.1.8 release notes bugs fixed: - stack-based buffer overflow in inet_pton (CVE-2015-1817) - regcomp crash/mem-corruption with illegal bytes after backslash - regcomp wrongly allowed backrefs in ER - regcomp miscompiled character class brace-repetitions - regcomp wrongly processed \0 as an unmatchable backref - new FLT_ROUNDS definition failed to work in C++ code arch-specific bugs fixed: - aarch64 was missing max_align_t definition 1.1.9 release notes new features: - ability to protect libc code itself with stack protector - sigsetjmp now restores signal mask after restoring context, not before - thread-local dlerror status/messages - dlerror messages are no longer truncated - diagnostics for constraint violations with ctype.h macros optimizations: - reduce cost of PIC on archs where PLT calls need a fixed GOT register - spin locks no longer constantly invalidate cache lines while spinning - code size reduction in static-linked TLS init bugs fixed: - failure to process robust mutexes on detached-thread exit - possible memory corruption due to robust mutex list on detached-thread exit - crash on memory exhaustion in getgr* internals - misaligned memory accesses in static binaries with low-alignment TLS blocks - multiple cases of wrongful path search continuation after transient failure - small memory leak on failure of dlopen with RPATH $ORIGIN - several small math bugs related to exception flags with non-finite args - mmap leak in sem_open failure path for link call - duplocale clobbered new locale struct with memcpy of old - futimes crashed with null timeval argument arch-specific bugs fixed: - stack protector spuriously aborted after forking on x32 - stack protector spuriously aborted with flockfile on powerpc - theoretically-possible clobbering of syscall return value on mips - random thread-pointer setup failure on sh (uninitialized return value) - possible crash in dlsym on sh due to incorrectly-computed branch target - broken fesetenv(FE_DFL_ENV) on mips - dynamic linker name for sh ignored fpu/nofpu and endianness - various minor aarch64 bugs - dangling pointers in x32 syscall timespec fixup code 1.1.10 release notes new features: - fail-safe (allocation-free) C locale for newlocale to return - all locale categories track requested locale name - rcrt1.o start file for static PIE optimizations: - inline atomics for sh4a - removed heavy atomics from locale-related code paths - removed global data accesses from CURRENT_LOCALE macro & callers - dynamic linker stage 1 size reduction compatibility: - better configure detection of unsupported compiler options - support for more relocation types in libc.so, not currently used - iconv_open accepts "" and "CHAR" as aliases for native (UTF-8) - additional LFS64 macros in sys/resource.h regressions fixed: - dynamic linker crash on NONE-type relocations (only mips affected) - inability to build as thumb2 on arm - failure to run under qemu-i386 user-level emulation - inability to access globals from libc on powerpc - PIE link errors in Scrt1.o under unusual usage on some archs other bugs fixed: - failure of ungetc/ungetwc to work on FILE streams in EOF state - possible null pointer dereference in gettext - possible initial stack misalignment on mips with PIE 1.1.11 release notes new features: - byte-based C locale - vdso clock_gettime on arm - musl-clang wrapper - sh2 nommu target support performance: - major speed-up for dynamic linker symbol lookups with GNU hash compatibility: - strverscmp now matches GNU behavior in corner cases - empty TZ environment variable gives GMT rather than system default - reconnection on syslog server socket loss (syslogd restart) - mmap fallback in simple_malloc when brk fails - support for %m and %s with null pointers in wide printf variants - call frame information in i386 asm for improved debugger support bugs fixed: - spurious errors from pwd/grp functions when nscd backend is absent - possible invalid access on calloc with simple_malloc - null pointer dereferences after calling uselocale((locale_t)0) - erroneous support for cancellation in stdio caused data loss - inconsistent handling of atexit called from atexit handler - missing locking in error paths for ungetwc - btowc mishandling of out-of-range non-EOF inputs - negated return value of ns_skiprr, failure in related functions - incorrect void return type for syncfs, missing error status - possible failure of tempnam due to missing null termination - negated tm_gmtoff field in struct tm - off-by-one error in getsubopt leaving equals sign in value result arch-specific bugs fixed: - soft deadlocks on i386/x86_64 due to missing barrier in internal locks - regression in arm pre-v7 support for kernels with kuser helper removed - runaway PC on mips detached thread exit (due to kernel regression) - mismatched ABI for local-dynamic model TLS on mips and powerpc - incorrect value of some SO_* constants on mips - broken 64-bit syscall argument passing on aarch64 1.1.12 release notes new features: - fdpic abi on sh2 for shareable text segment without mmu - general fdpic elf support in dynamic linker - CFI generation for x86_64 asm source files - protection against silently building a libc.so with missing symbols compatibility: - nl_langinfo(CODESET) now returns "ASCII" in byte-based C locale - fixed build regression due to buggy .SECONDARY in some GNU make versions - additional arm eabi functions needed by llvm arm backend - added format argument attributes to gettext function prototypes - static PIE no longer requires linking with -E/-rdynamic - eliminated spurious protected-data warnings linking against libc.so - avoided spurious fpu asm errors with some armhf toolchains bugs fixed: - fclose of stdin/stdout caused deadlock at exit - missing memory barrier in pthread_join - open_[w]memstream produced no buffer when no writes took place - uninitialized scopeid in address lookups from hosts file and ip literals - ip literals for mismatching family (v4 vs v6) were queried as hostnames - possible crash on OOM in regcomp - incorrect contents in localeconv structure (-1 instead of CHAR_MAX) - strftime mishandling of out-of-range struct tm members - wrongful attribute((const)) on pthread_self and errno location function arch-specific bugs fixed: - arm crt1 entry point failed to align stack pointer in some cases - mips fesetround failed to actually set rounding mode - i386 asm source CFI generation had multiple bugs 1.1.13 release notes new features: - out-of-tree builds - search domains in resolv.conf - sh arch supports j-core (j2) cas.l atomics - dynamic linker includes arch/abi in output when run as a command - header support for new kernel features through linux 4.4 - mips vdso clock_gettime support - regex BRE extensions: \|, \+, \? performance: - improved atomics performance on all archs with ll/sc model - atomic instructions are now inlined on armv6 - use fpu sqrt for arm softfp abi on targets with vfp compatibility: - getnameinfo now accepts sockaddr sizes larger than needed - new default CFLAGS/LDFLAGS avoid entire classes of toolchain bugs - explicit use of float_t/double_t avoids compiler float spill bugs - i386 max_align_t definition now works with g++ 4.7's pseudo-c++11 - all known protocols are added to protoent functions - stub utmpname, utmpxname functions - linker support for -Bsymbolic-functions is no longer mandatory - regex parsing size limits increased - malloc_usable_size now accepts null pointer input bugs fixed: - potential single-byte heap overflow in getdelim - mishandling of transient failure opening hosts, services, resolv.conf - mremap was sometimes able to allocate objects larger than PTRDIFF_MAX - nl_langinfo wrongly returned NULL instead of "" for invalid items - out-of-bounds dynamic tls allocation due to pointer/index scaling error - getifaddrs misreported point-to-point interface addresses - tdelete left tsearch trees misbalanced - tsearch crashed on allocation failure - tsearch, tfind, and tdelete failed to handle null pointer input - passing signal number 0 to sigaction resulted in a crash - getdelim updated caller's size wrongly when realloc failed - getdelim realloc strategy was wasteful - if_nametoindex returned wrong value on failure - missing ssp-suppression for some source files called from early-init - various minor resolv.conf parsing bugs - fwrite wrongly reported success on write errors in line-buffered flush - fwrite and fread wrongly returned nmemb (not 0) when size was 0 nommu-specific bugs fix: - failure to zero bss in FDPIC shared library loader - unsafe writes to read-only file mapping in non-FDPIC library loader arch-specific bugs fixed: - sh[eb]-nofpu-fdpic was using fpu-dependent setjmp/longjmp variants - dynamic linker path file name was wrong for arm "softfp" targets - mips siginfo_t and related macros were defined incorrectly - possibly misaligned pointer globals on arm (from an asm source file) - mips dynamic linker failed to provide info needed by debugger - mips cancellation asm wrongly assumed validity of $gp register value 1.1.14 release notes regressions fixed: - treatment of empty string argument as error by puts and fputs - make clean and distclean failure in unconfigured trees - sh/fdpic dynamic linker entry point hang due to wrong code - armhf (and arm softfp model) build failure with clang other bugs fixed: - wrongly clamping (rather than failing) excessive rounds in crypt-sha* 1.1.15 release notes new features: - mips64 (full 64-bit and n32) port - mips r6 isa support (subarch for mips, mips64, and mipsn32 archs) - powerpc64 port - powerpc (32-bit) soft-float ABI support (subarch) - pthread_tryjoin_np and pthread_timedjoin_np (nonstandard extensions) - header-level support for linux 4.5 and 4.6 features - sched_getcpu (nonstandard extension) support, including vdso version - __STDC_ISO_10646__, __STDC_IEC_559__ macros predefined via stdc-predef.h - support for new elf/arch features in elf.h compatibility: - configure now correctly chooses cross-prefix based on build/host/target - abort now successfully terminates pid 1 in a container (or top-level) bugs fixed: - memmem read past end of haystack, possible false positives or crashes - buffer underflow (reverse-overflow) in ungetwc - double-free under certain usage of putenv - incorrect treatment by regcomp of * at start of BRE subexpression - gethostbyname[2][_r] produced ip addresses in misaligned buffers - looking up some invalid hostnames caused malformed dns queries - lookups from hosts file were inconsistent with non-matching family - missing h_length value in gethostbyaddr results - a64l function produced wrong-signed results on 64-bit archs - broken padding of string formats to width in wide printf variants - wrong results for expf(-NAN) and exp2f(-NAN) - wrong value for RUSAGE_CHILDREN prevented it from working - abort failed to provide abnormal termination with SIGABRT blocked arch-specific bugs fixed: - broken posix_fadvise on arm and powerpc (32-bit) - thread structure/dtv corruption on powerpc at thread startup - various wrong mips and powerpc ioctl and termios constant values 1.1.16 release notes new features: - s390x (64-bit S/390) port - pthread_setname_np extension function - limited pthread_setattr_default_np function to set stack size defaults - header-level support for linux 4.7, 4.8, and 4.9 features - confstr _CS_V6_ENV and _CS_V7_ENV items compatibility: - public prototypes for abi-compat *_unlocked symbols, etc. - fflush_unlocked(NULL) now works - resolv.h __RES version macro now matches supported APIs - workaround for gdb bugs backtracing across signals on x86_64 - anchors ^ and $ are now accepted in BRE subexpressions - building for thumb2-only arm isa levels is now possible bugs fixed: - integer overflows in regexec buffer allocation (CVE-2016-8859) - failure of regexec to report matches at offsets past INT_MAX - static-pie executables with initialized thread-local storage crashed - printf failed to catch EOVERFLOW in some cases, wrongly produced it in others - printf produced wrong output, result for float with precision near INT_MAX - printf produced wrong results with alt-form octal, zero flag, & field width - printf float rounding was wrong for some midpoint cases - swprintf printed junk after internal (256-byte) buffer filled up - strtod family rounded incorrectly in several corner cases - getmntent failed to handle long records - getopt_long_only wrongly treated "--" as an option - asctime output wrongly varied by locale - strftime %y specifier produced wrong output for negative tm_year - time zone names quoted with <> were misparsed - corner case integer overflow in tm_year for some date conversions - failure to load shared libs whose names were prefixes of standard lib names - wrong error codes for several failure cases in various functions - various asymptomatic undefined behavior - various minor namespace issues in headers arch-specific bugs fixed: - tcsetattr regression on mips (completely non-working) - wrong pread/pwrite syscall calling convention on sh - wrong preadv2/pwritev2 syscall numbers on x32 - mrand48/jrand48 produced wrong-signedness results on 64-bit archs 1.1.17 release notes new features: - RTLD_LAZY deferred symbol binding, functionally equivalent to lazy binding - safeguard against dlopen of multiple libc versions/instances - new posix_spawn flag POSIX_SPAWN_SETSID - posix_spawnattr_setflags now reports unknown flags as error - ldso option --argv0 to set argv[0] - added _NL_LOCALE_NAME extension to nl_langinfo compatibility: - dlopen local-to-global promotion no longer changes existing symbols - gettext now searches locale name variants for translation files - increased locale name length limit from 15 to 23 bytes - setlocale(LC_ALL, 0) returns single name if all categories are same - realloc no longer fails when mremap doesn't work - getservby* no longer treat numeric port strings as service records - mmap now works around incorrect EPERM error codes from kernel - impact of REG_* namespace pollution in x86[_64] signal.h is reduced - arm atomic asm now assembles correctly with new binutils - PAGE_SIZE on arm is no longer constant (quiet upstream ABI relaxation) - lsearch/lfind now pass args to compare callback in canonical order - STB_WEAK and STB_GNU_UNIQUE symbols now behave same as STB_GLOBAL - better clang CFLAGS checks in configure - global vis.h hack, which made lld refuse to link to libc.so, is disabled performance: - single-instruction optimized math functions for aarch64, s390x, powerpc64 - fast path for ASCII in towupper/towlower - new mostly-integer-math fma function semantic bugs fixed: - POSIX-format TZ dst time transitions were wrong for southern hemisphere - regex REG_NEWLINE semantics were wrong with negated brackets - various bugs in strptime %j, %p, %C formats - iconv mapped some characters to legacy 8bit encodings incorrectly - glob failed to match "/" - UTF-8 decoder accepted invalid f4 9x xx xx code sequences - scanf %% conversion failed to consume whitespace - glob with GLOB_PERIOD wrongly descended into . and .. - nftw gave incorrect base name offset when pathname ends in "/" - functional regression in resolv.conf attempts option - scalbn could produce wrong result due to double rounding in subnormal range - strftime %y format wrong with negative years - mbsnrtowcs and wcsnrtombs mishandled input limits - minor issues with error codes for various functions safety/consistency bugs fixed: - stack-based buffer overflow in dns response processing - invalid free in regexec on certain error paths - invalid free in globfree after failed glob - one-byte buffer overflow in legacy getpass function - failed dlopen corrupted thread-local storage module list - race in pthread_create with priority attributes could leave signals masked - multithreaded set*id() functions could induce spurious EINTRs - dl_iterate_phdr reported wrong base address in static PIE - fd leak and wrong cancellation state after dns socket failure - memory leaks and other issues in environment-modification functions - read-after-free race in pthread_detach - memmem performed single-byte over-read in short-needle code paths - read via uninitialized pointer in gettext core - bindtextdomain broke bindings for all other domains - various silent undefined behavior - getopt clobbered optopt on success arch-specific bugs fixed: - x32 dynamic TLS accesses crashed - s390x was missing dlsym entry point (needed for RTLD_NEXT) - powerpc64 ldso startup could crash depending on link order - powerpc64 setjmp/longjmp didn't properly save/restore TOC pointer - thumb2 setjmp/longjmp silently broke at ld-time with text not aligned - fchown was broken on archs without SYS_fchown syscall - fstatat was broken on mips64 - various incorrect constants in powerpc64 and mips headers 1.1.18 release notes regression fixes: - glob failed to match literal . and .. path components - build for armv4t ISA level was broken other bug fixes: - stack overflow in posix_spawnp with large PATH variable in environment 1.1.19 release notes new features: - iconv framework for processing stateful encodings - iconv support for iso-2022-jp - iconv support for converting to legacy JIS-based Japanese encodings - iconv support for UTF-16/32 with BOM-determined endianness - iconv ibm1047 (ebcdic latin1-equivalent) support - iconv cp866 (dos cyrillic) support - character data tables & case mappings updated to Unicode 10.0 - fopencookie stdio extension - strftime padding character extensions - header-level support for new linux features through 4.13 compatibility: - UTC timezone is now called UTC instead of GMT - _DIRENT_HAVE_D_* macros in dirent.h - dladdr dli_fbase definition now matches other implementations - pthread_getattr_np now reports guard size - strftime '+' modifier better matches apparent intent of POSIX - getopt_long handles long option names containing '=' - better compatibility with linux uapi headers - workaround linux bug where getcwd can return non-absolute pathname - configure logic for finding compiler_rt with clang - execvp path search now continues after ENOTDIR components bugs fixed: - fgetwc failed when character crossed buffer boundary - memory corruption after failing to dlopen a second libc - sysconf reported infinite rlimits incorrectly - getopt_long --opt=arg did not work with partial matches - printf was wrong for alt-form octal with value 0, no explicit precision - endian errors in arpa/nameser.h and netinet/icmp6.h (missing endian.h) - atfork handler could clobber fork's errno - iconv could wrongly output surrogate pairs in ucs2 - fmemopen buffer underallocation with extreme size argument - getaddrinfo AI_NUMERICSERV wrong error code - data race in at_quick_exit - ldd failed to honor rpath $ORIGIN for program in . without "./" prefix arch-specfic bugs fixed: - x32 unistd.h wrongly reported LP64 instead of ILP32 - aarch64 signal.h had wrong type for ucontext_t uc_link member 1.1.20 release notes new features: - m68k port - replacement of malloc is now allowed/supported - setvbuf now accepts caller-provided buffers for stdio streams - getrandom syscall wrapper, getentropy function - mlock2 syscall wrapper - memfd_create syscall wrapper - explicit_bzero function - header-level support for new linux features through 4.17 - wcsftime now supports padding specifier extensions - dynamic linker's reclaim_gaps now works on fdpic archs - getaddrinfo now honors AI_ADDRCONFIG - pthread_attr_init now honors pthread_setattr_default_np defaults hardening: - prevent bypass of guarantee that suids start with fd 0/1/2 open - dlopen now rejects libraries with initial-exec refs to dynamic TLS compatibility: - elf.h: new flags, aux vector entry types, etc. - minor namespace issues in several headers - intNN_t types used in bitfields now safe against -funsigned-bitfields - complex arc trig/hyperbolic functions were badly broken - nice function returned wrong value - stdio locks no longer depend on read-after-free not faulting - avoid excessive stack usage in getcwd - inet_ntop no longer compresses single zeros in IPv6 (RFC 5952) - resolver routability probe for sorting results works on no-IPv6 systems - added missing ST_RELATIME definition to statvfs.h - uchar.h now works with old C++ profiles - added missing and arch-specific commands to ptrace.h - musl-gcc wrapper now works with default-pie host toolchains bugs fixed: - getopt wrongly treating colons in optstring as valid option chars - nl_langinfo_l(CODESET, loc) reported wrong locale's value - out-of-tree build produced broken crt files with stack protector enabled - fmaf produced wrong result for some corner cases - out of bounds write for zero length buffer passed to gethostname - getopt_long_only wrongly prefix-matched long-options over short ones - pthread_kill wrongly returned ESRCH for exited by valid pthread_t's - iconv buffer overflow converting to legacy JIS-based encodings - iconv conversion to "UTF-32" (no explicit endianness) failed (regression) - iconv mishandled big5-hkscs characters that map to two unicode chars - dynamic linker didn't map/clear bss for libraries with single LOAD segment - resolver wrongly duplicated trailing dot from query into canonical name - some futex waits omitted timeout arg to syscall, thereby spun on EFAULT - dladdr mishandled addresses not matching symbols - alignment of dirent structures from readdir was broken (regression) - strftime %z output wrong sign for offsets <1 hour west of UTC - limits.h, pathconf erroneously defined SYMLINK_MAX - FP_ILOGB0 and FP_ILOGBNAN definitions were not valid for use in #if - getopt failed to update optarg and optind correctly on missing argument - EMULTIHOP error lacked strerror text - mktime malfunctioned with tm_isdst>0 but no-DST POSIX-format time zone - async thread self-cancellation produced a deadlock condition - pthread_barrierattr_setpshared failed to produce EINVAL for bad argument - fileno failed to produce EBADF for non-fd-associated FILEs - fmemopen's w+ mode failed to truncate buffer at open - open_[w]memstream did not bind stream orientation at open time - system wrongly returned 0x7f00 instead of -1 on error - wide printf functions ignored field width for %c formats - fprintf failed to set stream orientation for unbuffered stream or no output - psignal, psiginfo, and perror wrongly set stream orientation for stderr - psignal, psiginfo potentially clobbered errno on success arch-specfic bugs fixed: - on arm/aarch64/sh, local-exec TLS layout mismatched ABI with large align - on arm/microblaze/sh, struct ipc_perm mismatched (buggy) kernel ABI - SO_PEERSEC definition was wrong on mips - on mips, return from start function passed to clone crashed (runaway exec) - printf %a precision specifier malfunctioned except on ld80 archs - async thread cancellation crashed on powerpc64 and sh-fdpic 1.1.21 release notes new features: - setting default thread stack size via PT_GNU_STACK program header - arm vfork implementation - arm tlsdesc/gnu2 tls dialect support - name_to_handle_at and name_to_handle_at syscall wrappers - header-level support for new linux features through 4.18 optimizations: - glob rewrite with much better performance and stack usage properties - single-threaded and already-locked fast paths for getc/putc variants - single-instruction fma implementations for arm, s390x, powerpc, & x86_64 - single-instruction fabs and sqrt implementations for powerpc - size and performance from making all internal-only functions/data hidden - made &errno and pthread_self results cachable again (attribute((const))) - significant speedup in strtod with short inputs - new tsearch AVL tree implementation, smaller and faster - special-cased nop calls to wmemmove - fixed erroneously suboptimal skip conditions in strstr and memmem hardening: - default thread stack guard size increased from 4k to 8k compatibility: - default thread stack size increased from 80k to 128k - building for arm as thumb2 with clang internal assembler now works - aio threads could overflow stack on kernels that break MINSIGSTKSZ ABI - aio threads no longer call malloc (problematic with malloc replacement) - pthread_sigmask/sigprocmask now ignore an invalid how when not changing mask bugs fixed: - soft deadlock regression in stdio FILE locks with >2 threads contending - deadlock and buffered data loss race in fclose - race condition leading to possible crash in dcngettext plural forms - glob failed to see past searchable-but-unreadable path components - getdelim wrongly realloc'd buffer that was already exactly right size - getdelim failed to set stream orientation on early error - ttyname[_r] reported wrong error when given bad fd - pthread_key_delete left old tsd values exposed if slot was reused - freeaddrinfo failed to support freeing sublists - access to optopt was broken by copy relocations - memccpy returned wrong result if first byte past buffer end matched - wordexp read past end of input string ending in backslash - sem_wait and sem_timedwait were wrongly not interruptible by signals - getspnam[_r] wrongly treated not-found as an error arch-specfic bugs fixed: - soft deadlocks (missing futex wake) on powerpc locking - dlsym returned wrong address for thread-local symbols on ppc/mips/m68k |