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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) |