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History of changes for LIBC Next

Version 0.1.14 (2026-01-11)

  • exceptions: Add support for EXCEPTQ_DEBUG_EXCEPTION [#148].
  • exceptions: Fix moving EXCEPTQ reports triggerd more often than once a second [#148].
  • exceptions: Add __libc_debug_report to force EXCEPTQ debug exception [#148].
  • exceptions: Add __libc_debug_report_n convenience macro [#148].
  • umalloc: Release heap lock on assert [#130].
  • Enable non-POSIX hton*, gethostid, gethostname in BSD mode [#135].
  • Add arc4random_buf [#151].
  • __spawnve: Properly handle shebang lines in non-kLIBC mode [#152].
  • __spawnve: Replace non-standard stdio handles with pipes for non-kLIBC processes [#150].
  • __spawnve: Fix incorrect EBADF instead of ENOEXEC [#150].
  • fcntl: Support F_CLOSEM and F_MAXFD commands [#153].
  • tcpip: Call so_cancel when closing OS/2 socket [#150].
  • Add closefrom and close_range [#153].
  • fs: Support F_[G|S]ETF[D|L] in Directory Access backend [#154].
  • logging: Add TLS log group.
  • logstrict: Do not split ErrL messages.
  • logstrict: Fix printing unsigned [long] long with high bit set.
  • logstrict: Improve log header (codepage, kLIBC args).
  • logstrict: Add UTF-8 support for log files, "%hc" and "%hs" format specifiers.
  • logstrict: Add STRICT versions of LIBC_ASSERT macros.
  • wait[pid|3|4]: Preserve child exit code on abnormal termination by signals [#136].
  • __spawni: Fix order of posix_spawn[p] calls based on use_path [#144].
  • getrlimit: Properly report high memory [#143].
  • fork: Deregister DLL on init failure instead of registering it again [#140].
  • posix_spawn_file_action_addopen: Make copy of path [#146].
  • Add wcscasecmp and wcsncasecmp [#149].
  • Make putenv, initstate, srandom, iconv POSIX compatible [#142].
  • freopen: Fix returning NULL on success w/o fname [#160].
  • exec/spawn: Do not accept dirs on interpreter probes [#166].
  • wmemcmp: Fix one-off typo in returned value [#168].
  • strcoll: Fix 1-byte char comparison in MBCS mode [#167].
  • pathconf: Accept paths with trailing slashes [#162].
  • open(dir): Fix Inode/Dev assignment [#161].
  • dup2: Return EBADF if target fd is out of range [#171].

Version 0.1.13 (2024-08-03)

  • sys/timeb.h: Sync time_t typedef with the rest via __time_t [#137].
  • errno: Enable non-POSIX codes in BSD mode [#136].
  • remove: Add support for deleting directories [#138].
  • termios.h: Enable non-POSIX codes in BSD mode [#135].
  • startup: flush streams explicitly in _CRT_term() [#139].

Version 0.1.12 (2023-09-11)

  • Export internal ___libc_touch call from LIBC DLL for libsocket [#133].

Version 0.1.11 (2023-08-30)

  • readv/writev: Use IOV_MAX instead of hard-coded value [#126].
  • logstrict: Create reports/logs in BOOTDRIVE\var\log\app if no LOGFILES or UNIXROOT set [#115].
  • Return E2BIG for OS/2 ERROR_BAD_ENVIRONMENT and ERROR_BAD_ARGUMENTS [#127].
  • spawn: Support large environment and command line for kLIBC apps [#127].
  • spawn: Support large command line & environment in hash bang scripts [#127].
  • Bump _XOPEN_SOURCE to 700 [#128].
  • errno: Make EWOULDBLOCK, ETXTBSY and others available in POSIX mode [#124].
  • Add BLDLEVEL info to LIBCn DLLs [#67].
  • ibsocket: recv: Touch buffer to mmake LIBCx mmap machinery work [#123].
  • sys/cdefs.h: Set __ISO_C_VISIBLE to 2011 by default to match current GCC [#131].
  • assert.h: Add static_assert macro (C11 standard) [#131].

Version 0.1.10 (2022-03-22)

  • Call non-OS/2 handle close callback upon unexpected handle loss [#117].
  • Add usual enter/exit logging to more I/O APIs [#117].
  • fwrite: Don't return EOL [#120].
  • Add missing scandir and alphasort definitions [#52].
  • Import wcsdup.c from FreeBSD and align to EMX [#118, #119].
  • unistd.h: Align crypt and friends to crypt.h [#121].

Version 0.1.9 (2021-08-26)

  • logstrict: Fix crash when logging with no groups provided [#112].
  • logstrict: Add __LIBC_LOG_MSGF_ALWAYS to ignore log groups when writing message [#113].
  • Append LIBC DLL module handle to its shared mutex/memory names [#114].

Version 0.1.8 (2021-08-16)

  • Make environ properly reflect empty environment on startup [#100].
  • spawnve: Skip empty strings in envp argument [#100].
  • setenv: Avoid arbitrary memory overwrite when replacing vars with no = [#102].
  • Fix Y2038 bug in DST handling for timezones with DST [#109].
  • Change defalt SIGTRAP action to terminate + "core dump" [#111].
  • emx/io.h: Prefix nbuf, cbuf, ubuf etc. macros with underscore [#107].
  • logging: Fix handling lowercase log groups [#101].
  • logstrict: Create log files in system log directory by default [#101].
  • logstrict: Make __libc_LogAssert work even on log file creation failure [#101].
  • Move EXCEPTQ .TRP reports generated by LIBC to system log directory [#99].
  • _isterm: Make it return non-zero only for real console (kbd/scr) devices [#105].

Version 0.1.7 (2021-02-26)

  • libsocket: Retry after bogus ENOTSOCK in socketpair [#94].
  • Add support for EXCEPTQ to LIBC panic handler [#96].
  • Fix false wait loop break in _fmutex_request_internal [#97].
  • Retry on ERROR_INTERRUPT in dosexRequestMutex [bitwiseworks/qtwebengine-chromium-os2#12].

Version 0.1.6 (2020-12-31)

  • Implement sysconf(_SC_NPROCESSORS_CONF) (addon to [#5]).
  • Fix broken nearbyint returning arbitrary values [#87].
  • select: Return -1 and ENIVAL when nfds < 0 or > FD_SETSIZE [#91].
  • Make tzset, __ftime and gethrtime thread safe [#90].
  • Use socklen_t in socket function prototypes [#63].

Version 0.1.5 (2020-07-22)

  • Make realpath not fail on long paths with lots of '..' and '.' [#73].
  • emxomf: Provide more verbose Record too long error message [#74].
  • emxomf: Fix Record too long error for objects with really long names [#74].
  • sys/socket.h: Use void * instead of caddr_t in msghdr [bitwiseworks/qtwebengine-chromium-os2#3].
  • Implement sysconf for _SC_PHYS_PAGES and _SC_AVPHYS_PAGES [#79].
  • Make timeval::tv_sec have type time_t instead of long as per POSIX [#80].
  • emxomfld: Add simple profiling in -t -t -t mode [#83].
  • emxomfld: Backport kLIBC r3669 [#83].
  • emxomf[ld]: Greatly increase hash table sizes to speed things up [#83].

Version 0.1.4 (2020-03-27)

  • Add more errors to strerror/perror [#8].
  • sys/stat.h: Swap st_mtim and st_mtimespec and friends [#45].
  • Add wide char output functions (wprintf, putwc and families) [#8].
  • Fix WCHAR_MIN/MAX and WINT_MIN/MAX definitions [#8].
  • b_timeHighResNano: Use integer arithmetics [#53].
  • Add clock_gettime and friends [#53].
  • Implement POSIX semaphores [#54].
  • Make new POSIX 2008 string functions available by default [#57].
  • Make isblank available by default [#61].
  • _sockaddr_storage.h: Change alignment to 32 bits [#62].
  • sys/socket.h: Add socklen_t, sa_family_t, sockaddr_storage [#62].
  • select: Do a simple wait cycle when nfds is 0 [bitwiseworks/libevent-os2#1].
  • Add wide char output functions (wscanf, getwc and families) [#8].
  • Add fgetws and fputws wide char functions [#8].
  • math.h: Align with latest FreeBSD [bitwiseworks/gcc-os2#15].
  • Add wcsxfrm function [#68].
  • sys/socket.h: Add SHUT_* constants for shutdown() [bitwiseworks/qtwebengine-chromium-os2#3].
  • signal.h: Force si_code constants to be (signed) int [bitwiseworks/qtwebengine-chromium-os2#3].

Version 0.1.3 (2019-12-25)

  • Restrict 2-nd __cxchg operand to A/B/C/D registers [#47].
  • symlink: Return EEXIST if path name exists and is directory [#48].
  • posix_spawn: Return errno on failure instead of -1 [#46].
  • sys/stat.h: Add more BSD-like aliases like st_mtimensec and st_mtim [#45].
  • Rebuild with newer libiberty (binutils 2.33.1) to fix EMXOMF crash [#49].

Version 0.1.2 (2019-07-15)

  • Get rid of direct resolving of DosOpenL and friends. [#36].
  • unlink() shall not delete directories, but return EISDIR [upstream].
  • Make _fnlwr/_fnlwr2 work for path rewrites (/@unixroot and such) [#39].
  • Provide pwd_mkdb tool that handles : to $ replacement in drive names in pw_dir [#1].
  • Add getrusage() implementation [#40].

Version 0.1.1 (2019-02-24)

  • Fix failures to fork children from drive root directory [#31].
  • Silence emxomf warnings not fixable by programmer [#32].

Version 0.1.0 (2019-02-15)

  • Initial release of LIBC Next based on kLIBC version 0.6.6 CSD6 (released on 27-10-2014). The below list of changes shows important changes, improvements and fixes since this version.
  • Change main LIBC DLL name from LIBC066.DLL to LIBCN0.DLL [#17].
  • Add bww copyright and git commit information to all binaries and DLLs [#17].
  • Change LIBC global mutex and shared memory names from INNOTEKLIBC to BWWLIBC [#17].
  • Add _LIBCN_, _LIBCN_MINOR_, __LIBCN_PREREQ defines to features.h [#29].
  • Fix resetting file access mode to O_WRONLY if opened with O_NOINHERIT [#2].
  • Define __LONG_LONG_SUPPORTED on modern C++ (C++11 and above) [#3].
  • Make readdir return DT_LNK for symlinks [#9].
  • Make sure SIGCHLD is raised after a zombie for wait[pid] is created [#10].
  • Make reaplath fail on non-existing paths [#11].
  • Make stat succeed on file names with trailing spaces [#12].
  • Make [f]close return 0 regardless of DosClose result if LIBC handle is freed [bitwiseworks/libcx#60].
  • Fix typo in dlclose backend that would result in random return values [#14].
  • Increase dlerror buffer to 260+64 chars (to fit the full DLL path).
  • Fix LIBC makefiles to support building with GCC 4.x.x [#4].
  • Remove libiberty headers and libs (newer ones are part of our binutils port) [#4].
  • Align emxexp and innidmdll to newer libiberty from binutils [#4].
  • Backport extern inline handling from newer GLIBC (2.28) [#4].
  • Remove GCC 3 C++ library from LIBC DLL (our GCC 4 port provides a separate C++ DLL) [#4].
  • Remove deprecated __STDC_CONSTANT_MACROS and __STDC_LIMIT_MACROS [#3, http://trac.netlabs.org/libc/ticket/297].
  • Define max_align_t in stddef.h as required by ISO C [#3, http://trac.netlabs.org/libc/ticket/297].
  • Fix LIBC_LOGGING processing by LIBC itself [#3, http://trac.netlabs.org/libc/ticket/361].
  • Fix incorrect __KLIBC_ARG_MASK usage in __spawne [#3, http://trac.netlabs.org/libc/ticket/362].
  • Reset global thread data in child after fork [#3, http://trac.netlabs.org/libc/ticket/363].
  • Support more OS/2 APIRET codes when converting to errno [#3, http://trac.netlabs.org/libc/ticket/364].
  • Add new __LIBC_FORK_CTX_FLAGS_LAST fork callback flag [#3, http://trac.netlabs.org/libc/ticket/366].
  • emxomfld: Fix Invalid WKEXT record errors [#3, http://trac.netlabs.org/libc/ticket/376].
  • Remove BSD defines from sys/param.h and types.h [#3, http://trac.netlabs.org/libc/ticket/377].
  • Fix rare DosAllocMemEx(OBJ_LOCATION) bug [#3, http://trac.netlabs.org/libc/ticket/384].
  • Remove /@unixroot/bin and /@unixroot/sbin from default paths [#15].
  • Add NO_STRIP makefile variable to disable stripping debug info [#22].
  • Fix LIBC makefiles to better support building LIBC RPMs [#24].
  • Fix infinite loop in atexit, a GCC 4 regression [#25, #4].
  • Properly define kHeapDbgException as weak symbol [#26, #4].
  • Fix all compiler warnings under GCC 4 [#21].
  • Fix incorrect process termination reason report in some cases [#21].
  • Properly return old timer values in getitimer and setitimer APIs [#21].
  • Fix parameter validation in waitid APIs [#21].
  • Make __libc_TLSAlloc return ENOMEM when no memory instead of random errno [#21].
  • Add getdents and getdirentries APIs [#27].
  • Export __libc_native2errno from main DLL [#16].
  • Add CMSG_LEN and CMSG_SPACE to sys/socket.h [#7].
  • Add modern ISO C definition for NULL to stddef.h [#20].
  • Update Safe DOS wrappers with ones from kLIBC 0.7 trunk [#24].
  • Import emxomfstrip from kLIBC 0.7 trunk [#24].
  • Add SafeDosEnumAttribute to libos2 [#19].
  • Implement sysconf(_SC_NPROCESSORS_ONLN) [#5].