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-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
-
-
-1.1.22 release notes
-
-new features:
-- priority-inheritance mutexes
-- membarrier syscall, pre-registration to use it, fallback emulation
-- header-level support for new linux features in 4.19, 4.20, 5.0
-
-major internal changes:
-- complete, async-safe view of all existent threads as global list
-- robust __synccall based on new thread list
-- new dynamic TLS is installed synchronously at dlopen
-- TLSDESC resolver functions no longer make bad ABI assumptions to call C
-- resolved shared library dependencies are now recorded
-
-compatibility & conformance:
-- dependency-order shared library constructor execution
-- sigaltstack no longer rejects SS_AUTODISARM, future flags
-- FILE is now a complete (dummy) type in pre-C11 feature profiles
-- setvbuf reports failure on invalid arguments
-- TSVTX is exposed unconditionally in tar.h
-- multithreaded set*id() no longer depends on /proc
-- key slot reuse after pthread_key_delete no longer depends on /proc
-
-bugs fixed:
-- failures in multithreaded set*id() with concurrent thread creation/exit
-- interposed free was called from invalid/inconsistent contexts
-- freeaddrinfo performed invalid free of some partial results lists
-- dlsym dependency order search had false negatives and false positives
-- dn_skipname gave wrong results for labels with 8-bit content
-- dcngettext clobbered errno, often breaking printing of error messages
-- sscanf read past end of buffer under certain conditions (1.1.21 regression)
-- pthread_key_create spuriously failed under race condition (1.1.21 regression)
-- fdopendir wrongly succeeded with O_PATH file descriptors
-- gets behaved incorrectly in presence of null bytes
-- namespace violations in c11 tsd and mutex function dependencies
-- incorrect prototype for makecontext (unimplemented)
-
-arch-specfic bugs fixed:
-- s390x had wrong values for POSIX_FADV_DONTNEED/_NOREUSE
-
-
-
-1.1.23 release notes
-
-new features:
-- riscv64 port
-- configure now allows customizing AR and RANLIB vars
-- header-level support for new linux features in 5.1
-
-major internal changes:
-- removed extern __syscall; syscall header code is now fully self-contained
-
-performance:
-- new math library implementation for log/exp/pow
-- aarch64 dynamic tlsdesc function is streamlined
-
-compatibility & conformance:
-- O_TTY_INIT is now defined
-- sys/types.h no longer pollutes namespace with sys/sysmacros.h in any profile
-- powerpc asm is now compatible with clang internal assembler
-
-changes for new POSIX interpretations:
-- fgetwc now sets stream error indicator on encoding errors
-- fmemopen no longer rejects 0 size
-
-bugs fixed:
-- static TLS for shared libraries was allocated wrong on "Variant I" archs
-- crash in dladdr reading through uninitialized pointer on non-match
-- sigaltstack wrongly errored out on invalid ss_size when doing SS_DISABLE
-- getdents function misbehaved with buffer length larger than INT_MAX
-- set*id could deadlock after fork from multithreaded process
-
-arch-specfic bugs fixed:
-- s390x SO_PEERSEC definition was wrong
-- passing of 64-bit syscall arguments was broken on microblaze
-- posix_fadvise was broken on mips due to missing 7-arg syscall support
-- vrregset_t layout and member naming was wrong on powerpc64
-
-
-
-1.1.24 release notes
-
-new features:
-- GLOB_TILDE extension to glob
-- non-stub catgets localization API, using netbsd binary catalog format
-- posix_spawn file actions for [f]chdir (extension, pending future standard)
-- secure_getenv function (extension)
-- copy_file_range syscall wrapper (Linux extension)
-- header-level support for new linux features in 5.2
-
-performance:
-- new fast path for lrint (generic C version) on 32-bit archs
-
-major internal changes:
-- functions involving time are overhauled to be time64-ready in 32-bit archs
-- x32 uses the new time64 code paths to replace nasty hacks in syscall glue
-
-compatibility & conformance:
-- support for powerpc[64] unaligned relocation types
-- powerpc[64] and sh sys/user.h no longer clash with kernel asm/ptrace.h
-- select no longer modifies timeout on failure (or at all)
-- mips64 stat results are no longer limited to 32-bit time range
-- optreset (BSD extension) now has a public declaration
-- support for clang inconsistencies in wchar_t type vs some 32-bit archs
-- mips r6 syscall asm no longer has invalid lo/hi register clobbers
-- vestigial asm declarations of __tls_get_new are removed (broke some tooling)
-- riscv64 mcontext_t mismatch glibc's member naming is corrected
-
-bugs fixed:
-- glob failed to match broken symlinks consistently
-- invalid use of interposed calloc to allocate initial TLS
-- various dlsym symbol resolution logic errors
-- semctl with SEM_STAT_ANY didn't work
-- pthread_create with explicit scheduling was subject to priority inversion
-- pthread_create failure path had data race for thread count
-- timer_create with SIGEV_THREAD notification had data race getting timer id
-- wide printf family failed to support l modifier for float formats
-
-arch-specific bugs fixed:
-- x87 floating point stack imbalance in math asm (i386-only CVE-2019-14697)
-- x32 clock_adjtime, getrusage, wait3, wait4 produced junk (struct mismatches)
-- lseek broken on x32 and mipsn32 with large file offsets
-- riscv64 atomics weren't compiler barriers
-- riscv64 atomics had broken asm constraints (missing earlyclobber flag)
-- arm clone() was broken when compiled as thumb if start function returned
-- mipsr6 setjmp/longjmp did not preserve fpu register state correctly
-
-
-
-1.2.0 release notes
-
-new features:
-- time_t is now 64-bit on all archs (not just 64-bit archs)
-- character type & case mapping data updated to Unicode 12.1.0
-- header-level support for new linux features in 5.3 and 5.4
-
-performance:
-- new O(1) wchar_t case mapping implementation
-- i386 now uses C math code for exp, faster than old asm
-- mips math asm
-
-compatibility & conformance:
-- endian.h now aims to conform to future POSIX definition
-- support older compilers that don't accept powerpc math asm constraints
-- fdpic code in ldso was incompatible with valid optimizations in gcc 9+
-- RLIMIT_RTTIME was missing from sys/resource.h
-
-bugs fixed:
-- wcwidth wrongly returned 0 for most of planes 4 and up
-- missing case mapping between U+03F3 and U+037F
-- wrong cacosh results for arguments with negative imaginary part
-- wrong catanf/catanl results for various classes of arguments
-- wrong return value for ungetc with argument outside [0,UCHAR_MAX]
-- posix_openpt with no ptys available produced wrong errno
-
-arch-specific bugs fixed:
-- sigcontext/regset definition mistakes & omissions on m68k, powerpc64
-- fesetenv(FE_DFL_ENV) crashed on riscv64
-- sh2 dynamic linker was broken since 1.1.21 (crash in stage 2b)
-- arm dynamic linker chose wrong tls/atomic variants since 1.1.21
-- some math library functions returned excess precision on i386
-- unconfirmed regression in fchmodat AT_SYMLINK_NOFOLLOW on mips*
-
-
-
-1.2.1 release notes
-
-major changes:
-- new malloc implementation (mallocng & overhauled bump allocator)
-
-new features:
-- DNS queries via res_* now set AD flag, report zone signedness (DNSSEC)
-- PTHREAD_NULL macro (POSIX-future)
-
-performance:
-- optimized memcpy and memset for aarch64
-- optimized memcpy for arm now supports big endian
-- optimized x86_64 remquol
-- improved strerror without linear search
-
-bugs fixed:
-- lock-skipping for processes that returned to single-threaded was wrong
-- AF_UNSPEC dns lookups mishandled single failure in paired A+AAAA
-- res_send and res_query returned wrong value on errors from nameserver
-- corrupted sysvipc timestamps on 32-bit archs with old kernels
-- incorrect parsing of timezone offsets after overly-long zone name
-- clock_adjtime was broken on 32-bit archs (time64)
-- pthread_kill as not async-signal-safe
-- pthread_cancel was not async-cancel-safe
-- large-ulp errors in various math functions in non-default rounding modes
-
-arch-specific bugs fixed:
-- arm clock_gettime was broken on some hw due to bad time64 vdso
-- m68k sqrtl lacked long double precision
-- mips* syscall mechanism regressions on older kernels
-- mips* had negated error codes for some syscalls (kernel bug)
-- mips* SIGEMT was wrongly called SIGSTKFLT
-- sh fesetround didn't work correctly on sh
-
-
-
-1.2.2 release notes
-
-major changes:
-- child restrictions lifted after fork of multithreaded parent
-
-new features:
-- _Fork function (POSIX-future)
-- reallocarray function (extension from OpenBSD, now widespread)
-- gettid function (kernel tid as supported concept)
-- SIGEV_THREAD_ID sigevent API (Linux extension)
-- tcgetwinsize and tcsetwinsize functions (POSIX-future)
-
-performance:
-- faster software sqrt on archs without native sqrt instruction
-
-compatibility:
-- realpath no longer depends on procfs availability & accuracy
-- time zone parser now always prefers 64-bit tables if present
-- crypt_blowfish now supports $2b$ prefix
-- res_query now reports errors via h_errno
-- set*id and setrlimit are now safe in vforked/cloned child
-- setgroups now applies to all threads
-- dlopen debugger notification is improved, should work with lldb
-- setrlimit no longer needs __synccall broadcast on linux 2.6.36+
-- faccessat with AT_EACCESS no longer needs child process on linux 5.8+
-
-bugs fixed:
-- buffer overflow and infinite loop errors in wcsnrtombs (CVE-2020-28928)
-- sem_close unmapped still-referenced semaphores
-- fork of process with active aio could deadlock or crash paren
-- pthread_cond_wait was broken with priority-inheritance mutex
-- getgrouplist wrongly failed when nscd reported an empty list
-- abort could leak modified SIGABRT disposition to fork or posix_spawn child
-- regression with mallocng: malloc_usable_size(0) crashed
-- readlink wrongly gave EINVAL on zero length dest buffer
-- sqrtl was severely inaccurate (not correctly rounded) on ldquad archs
-- assert failure wrongly flushed stdio (possible deadlock)
-- MUSL_LOCPATH search was broken with multiple components
-- missing newline in herror output
-- possible deadlock in pthread_exit with pshared mutex or barrier usage
-- pthread_mutexattr_getprotocol didn't read back protocol
-- v4l2 ioctl translation for pre-time64 kernels didn't work
-
-arch-specific bugs fixed:
-- x86_64 longjmp failed to handle 0 argument reliably
-- i386 __set_thread_area fallback for pre-2.6 kernels didn't work
-- missing O_LARGEFILE macro value on x86_64, x32, mips64
-- unpredictable s390x breakage from failure to preserve call-saved registers
-
-
-
-1.2.3 release notes
-
-new features:
-- qsort_r function (POSIX-future)
-- pthread_getname_np extension function
-- hard float on SPE FPU for powerpc-sf
-- SEEK_DATA and SEEK_HOLE exposed in unistd.h (Linux extensions)
-
-compatibility:
-- free now preserves errno (POSIX-future requirement)
-- setjmp is declared explicitly with returns_twice for non-GCC compilers
-- macro version of isascii is no longer defined for C++
-- dynamic linker now tolerates zero-length LOAD segments
-- epoll_[p]wait is now a cancellation point
-- pwd/grp functions no longer fail on systems without AF_UNIX support
-- POSIX TZ parsing is stricter to allow more names to fallback to files
-- NULL is now defined as nullptr when used in C++11 or later
-- gettext now accepts null pointer as argument
-
-bugs fixed:
-- old regression in wcwidth of Hangul combining (vowel/final) letters
-- duplocale used wrong malloc when malloc was replaced (1.2.2 regression)
-- fmaf rounded wrong on archs without FE_TOWARDZERO (all softfloat archs)
-- popen didn't honor requirement not to leak other popen pipe fds to child
-- aligned_alloc and variants crashed on allocation failure
-- dl_iterate_phdr reported incorrect module TLS pointers
-- mishandling of some inputs in acoshf and expm1f and functions using them
-- potentially wrong-sign zero in cproj functions at infinity
-- multiple bugs in legacy function cuserid
-- minor posix_spawn file actions API conformance issues
-- pthread_setname_np fd leak
-- out-of-bound read in zoneinfo handling with distant-past times
-- out-of-tree builds lacked generated debug cfi for x86 asm
-
-arch-specific bugs fixed:
-- powerpc (32-bit) struct shmid_ds layout was wrong for some fields
-- time64 struct layout was wrong in sound ioctl fallback (32-bit archs)
-
-
-
-1.2.4 release notes
-
-new features:
-- large dns record lookups via tcp fallback
-- new getaddrinfo EAI_NODATA result to distinguish NODATA/NxDomain
-- support for new RELR compressed format for relative relocations
-- sysconf keys for querying signal stack size requirements
-- real vfork on riscv64
-
-performance:
-- mallocng no longer uses MADV_FREE (high performance cost, little gain)
-- vdso clock_gettime is supported once again on 32-bit arm
-
-compatibility:
-- gethostbyname family now distinguishes NO_DATA from HOST_NOT_FOUND
-- res_send now works with caller-provided edns0 queries
-- arpa/nameser.h RR types list is now up-to-date
-- previously-missing POSIX confstr keys have been added
-- mntent interfaces now accept missing fields
-- alt signal stack, if any, is now used for internal signals
-- the LFS64 macros are no longer exposed without _LARGEFILE64_SOURCE
-- memmem (POSIX-future) is now exposed in default feature profile
-- pthread_atfork now admits calls from an application-provided malloc
-- debugger tracking of shared libraries now works on MIPS PIE binaries
-- sendmsg now supports up to SCM_MAX_FD fds in SCM_RIGHTS messages
-
-bugs fixed:
-- gethostbyname[2]_r wrongly returned nonzero (error) on negative result
-- parallel v4/v6 address queries could fail on query id collisions
-- spurious getaddrinfo/AI_ADDRCONFIG failures due to errno clobbering
-- dns search domains ending in dot (including lone dot) broke lookups
-- ipv6 servers in resolv.conf broke lookups on systems with v6 disabled
-- systems with bindv6only failed to query both v4 and v6 nameservers
-- res_mkquery mishandled consecutive final dots in name
-- res_send could malfunction for very small answer buffer sizes
-- resolver dns backend accepted answers with wrong (A vs AAAA) RR type
-- getservbyport_r returned junk or ENOENT (vs ERANGE) on buffer size errors
-- dns result parsing of malformed responses could process uninitialized data
-- freopen didn't reset stream orientation (byte/wide) & encoding rule
-- fwprintf didn't print most fields on open_wmemstream FILEs
-- wide printf %lc ignored field width
-- wide printf erroneously processed %n after encoding errors
-- use of wide printf %9$ argument slot overflowed undersized buffer
-- swprintf malfunctioned on nul character in output
-- strverscmp ordered digit sequences vs nondigits incorrectly
-- timer_create/SIGEV_THREAD failure leaked the thread
-- semaphores were subject to missed-wake under certain usage patterns
-- several possible rare deadlocks with lock handling at thread exit
-- several possible rare deadlocks with aio and multithreaded fork
-- dynamic linker relro processing was broken on archs w/variable pagesize
-- async cancellation could run cancellation handlers in invalid context
-- pthread_detach was wrongly a cancellation point in rare race code path
-- use-after-close/double-close errors in mq_notify error paths
-- mq_notify event thread wrongly ran with signals unmasked
-- wcs{,n}cmp, wmemcmp returned wrong results when difference overflowed
-- accept4, pipe2, and dup3 handled unknown flags wrong in fallback cases
-- CPU_SETSIZE macro had wrong unit
-- select fallback for pre-time64 kernels truncated timeout (vs clamping)
-
-arch-specific bugs fixed:
-- x32 new socketcalls took fallback path due to pointer sign extension
-- x32 wait4 didn't fill rusage structure (time64 regression)
-- x32 semtimedop mismatched timespec ABI with kernel (time64 regression)
-- sigaction signal mask was bogus on or1k, microblaze, mips, and riscv
-- powerpc-sf longjmp asm clobbered value argument
-- or1k poll function passed timeout to syscall in wrong form