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ChangeLog
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ChangeLog
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== [8.3.0] (development) ==
* Acquire allocator lock in GC_is_tmp_root and GC_register_disclaim_proc
* Add 'lib' prefix to build artifact names in Makefile.direct
* Add API to get total stopped-world marking time
* Add I_HOLD_LOCK assertion to callers of GC_get_maps (refactoring)
* Add Linux example to README.cmake
* Add assertion about kind argument range in GC_register_describe_type_fn
* Add assertion that custom setspecific is not called to overwrite value
* Add assertion that result is not forwarding address in GC_install_header
* Add assertion to GC_maybe_gc that GC is not in progress
* Add assertion to ensure GC_unmapped_bytes cannot underflow
* Add assertion to verify GC_threads hash table entries are chained properly
* Add assertions about GC_mark_state to alloc.c and mark.c
* Add assertions about hidden ptr lowest bit in toggle-refs implementation
* Add callback API to support ephemeron marking
* Add check that gc_hdrs.h and gc_locks.h are included only from gc_priv.h
* Add check-deps goal to Makefiles to build the tests but not execute them
* Add debug logging to GC_clear_exclusion_table and GC_exclude_static_roots
* Add minimal testing of GC_allow_register_threads
* Add missing cast in GC_is_init_called (refactoring)
* Add missing undef GC_NO_THREAD_REDIRECTS in threaded tests
* Add support of wasm32-wasi target
* Add testing of remaining API functions (gctest and leaktest)
* Add verbose logging of events of getting memory from OS
* Add visionOS simulator support
* Adjust comments in block_unmap_inner
* Adjust comments referring glibc version (documentation)
* Adjust header includes in cord .c files (refactoring)
* Adjust indent inside case statements in configure.ac (reformatting)
* Adjust indentation in C preprocessor directives (reformatting)
* Adjust naming of Win32/64 and x86/64 words in comments and documentation
* Adjust pointer-to-int cast in GC_register_dynamic_libraries for WinCE
* Adjust printing on amount of unmapped memory after GC
* Allow GC_push_roots to work even when no exclusions registered
* Allow custom AO_SRC_DIR, CURSES, EXEEXT, HOSTCC/CFLAGS for Makefile.direct
* Allow disable USE_PROC_FOR_LIBRARIES even if malloc is redirected on Linux
* Allow gc_allocator<T> and friends to be defined in namespace boehmgc
* Allow incremental GC on OpenBSD
* Allow mprotect-based incremental GC on AIX and for all Linux targets
* Allow passing custom CC and CXX to Makefile.direct
* Allow passing custom CFLAGS[_EXTRA] to Makefile.direct
* Allow single signal usage for both world suspend and resume in gctest
* Allow testing of retry-signals functionality
* Allow to build with forced WRAP_MARK_SOME
* Allow to compile tests with custom NTHREADS set to zero
* Allow to cross-compile for MacOS with missing mach-o/getsect.h
* Allow to randomly choose a CPU core if AO ops are emulated with locks
* Allow to skip heap expansion in GC_init
* Allow to unmap memory block right in GC cycle where block is freed
* Allow to use print/check_marks_int_list() in gctest
* Allow to use same signal for thread suspend and restart (default on E2K)
* Always declare GC_set_and_save_fault_handler before its definition
* Always invoke pending finalizers in GC_generic_malloc_uncollectable
* Always print error details message when gctest fails
* Always set only one bit past end in GC_set_hdr_marks
* Always specify relative path for private headers mentioned in .md docs
* Assert SET_HDR does not write to GC_all_nils
* Assert allocator lock held in GC_add_roots_inner and its callers
* Assert allocator lock held in GC_reset_finalizer_nested
* Assert allocator lock held in add_leaked/smashed, check_heap_proc
* Assert allocator lock held in scratch_alloc/recycle and their callers
* Assert allocator lock held in start/continue_reclaim and reclaim_all
* Assert allocator lock held to ensure no race on reveal hidden pointers
* Assert allocator lock held while GC_our_memory is updated
* Assert in typed_mark_proc that allocator lock held by some collecting thread
* Assert that bm_table is already initialized when GC_double_descr used
* Assert that disappearing links are accessible during registration and GC
* Assert that size of element of a typed object is non-zero (refactoring)
* Avoid code duplication between pthread_support.c and win32_threads.c
* Avoid code duplication in GC_core_gcj_malloc (refactoring)
* Avoid code duplication in GC_dyld_image_add/remove on Darwin (refactoring)
* Avoid code duplication in GC_incremental_protection_needs (refactoring)
* Avoid code duplication in GC_make_array_descriptor (refactoring)
* Avoid code duplication in HAVE_FLAG_WNO_FRAME_ADDRESS of CMake script
* Avoid code duplication in IGNORE_OFF_PAGE-specific malloc functions
* Avoid code duplication regarding GC_push_roots in GC_mark_some_inner
* Avoid duplication of magic numbers in disclaim.c, weakmap.c (refactoring)
* Avoid fn call inlining in GC_call_with_stack_base/gc_active
* Avoid unmap of memory allocated during GC init regardless of threshold
* Better document GC_generate_random_heap/valid_address API functions
* Better document GC_no_dls and NO_DEBUGGING macro
* Better document GC_print_free_list regarding allocator lock
* Better document link argument of GC_general_register_disappearing_link
* Better document missing debugging version for aligned allocation routines
* Better document preprocessor-related pointer checking routines in gc.h
* Better document why REVEAL_POINTER should be used with allocator lock held
* Better separate libgc build- and use-time macro descriptions in README
* Build cord/de test by WCC_MAKEFILE on Win32
* Build extra/gc.c in digimars.mak
* Build with GC_wcsdup support if wcslen exists
* Call GC_init_parallel only from GC_init (refactoring)
* Call syscall() to get E2K procedure stack directly in caller function
* Change GC_Thread_Rep in pthread_support.h to match that of win32_threads.c
* Change NOT_MARKED value to non-zero (refactoring)
* Change default GC_time_limit value from 50 to 15 ms
* Change default value of max_prior_attempts to 3
* Change enable_threads default to off if threads are unsupported (CMake)
* Change file extension of README.* to lower case in doc/platforms
* Change minimum heap growth to one block if requested explicitly
* Change p local variable to current_p in push_all/conditional_eager
* Change type of GC_collecting variable to match atomic operations over it
* Check highest bit of word using SIGNB instead of cast to signed_word
* Check out-of-memory and set in_thread_creation inside GC_new_thread
* Check pointer tag in all mark procedures (E2K)
* Clear GC_thread_key thread-local value on unregistering the thread
* Collapse arch macro defines where possible (refactoring)
* Comment out argument names of functions in cord public headers
* Compile gc_dlopen.c and specific.c conditionally in Makefile.am
* Consistent naming of GC_thread local variables (refactoring)
* Consistent naming of variables of obj_kind type (refactoring)
* Consistent use of CHECK_OUT_OF_MEMORY() in tests (refactoring)
* Consistently use GC_word (instead of word) type in tests (refactoring)
* Declare GC_noop1 as public function unconditionally
* Declare GC_register_stackbottom symbol as internal on IA64 (refactoring)
* Define ALIGNMENT macro based on CPP_WORDSZ value by default (refactoring)
* Define GC_GLIBC_PREREQ internal macro (refactoring)
* Define GC_GRANULE_BYTES macro based on GC_GRANULE_WORDS value (refactoring)
* Define GC_VERSION_VAL_T public macro (refactoring)
* Define GC_get_parallel and GC_set_markers_count in single-threaded GC
* Define GC_print_stats as GC_INNER (refactoring)
* Define GC_save_regs_ret_val variable only if used on IA64 (refactoring)
* Define GC_self_thread_inner to lookup GC_thread of current thread
* Define GC_thread type in a single place both for pthreads and Win32
* Define LAZY_THRESHOLD const value as long in cord (refactoring)
* Define and use SIGNAL_BASED_STOP_WORLD macro internally (refactoring)
* Define counter variables as static in gctest (refactoring)
* Define internal macro NO_SEH_AVAILABLE where SEH is absent (refactoring)
* Define internal macro for pointers rounding up by a mask (refactoring)
* Define macros in gcconfig.h to use sigaction for SIGSEGV and SIGBUS
* Define marker_[b]sp only if needed (refactoring)
* Define op and nwords local variables consistently across typd_mlc.c
* Define public GC_MALLOC_EXPLICITLY_TYPED_IGNORE_OFF_PAGE()
* Define public GC_[p]valloc() and redirect to them in leak_detector.h
* Define sized delete operator in 'gc' class
* Define tunable values in cordtest as macro (refactoring)
* Detect presence of pthread_sigmask() in configure and cmake scripts
* Disable H/W tag checking in mark procedures by default (E2K)
* Disable memory unmapping explicitly in gcconfig.h for Emscripten
* Disallow explicit unregister of non-main thread if registered by DllMain
* Discard sections with pseudo-paths except heap in register_map_entries
* Do incremental mark some in GC_collect_a_little even if GC is disabled
* Do not add extra byte to large ignore-off-page and uncollectible objects
* Do not check INV_SZ_COMPUTATION_CHECK macro (refactoring)
* Do not check dl_iterate_phdr presence by build scripts on OS X and Win32
* Do not check presence of getcontext and dl_iterate_phdr by cmake on Win32
* Do not compile pthread_start.c on Cygwin even if build shared libs (CMake)
* Do not compile pthread_stop_world.c on Darwin (CMake)
* Do not count time spent processing toggle-refs in stopped_mark
* Do not define GC_pthread_start/exit for Orbis and Sony PSP (refactoring)
* Do not define GETPAGESIZE on Win32 (refactoring)
* Do not define SIG_HNDLR_PTR on Darwin unless really used
* Do not define THREAD_SANITIZER if GC is built w/o threads support
* Do not do unnecessary GC_read_dirty() from GC_enable_incremental
* Do not expose GC_nacl_gc_thread_self variable outside pthread_stop_world.c
* Do not flush registers before reading procedure stack on E2K
* Do not free entry in GC_delete_gc_thread to match that on Win32
* Do not hard-code page size for wasm32-wasi (refactoring)
* Do not include gcconfig.h from extra/symbian source files (refactoring)
* Do not include sched.h from pthread_start.c (refactoring)
* Do not invoke GC_approx_sp() repeatedly in GC_stopped_mark (refactoring)
* Do not invoke finalizers during thread creation or destruction
* Do not prohibit threaded builds with malloc redirection on non-Linux
* Do not put atomic_ops[_sysdeps].o to libgc.a in Makefile.direct
* Do not reference internal files in comments of public header files
* Do not set SIGBUS handler to catch write faults on Linux
* Do not store E2K procedure stack to GC heap (refactoring)
* Do not treat warnings as errors by default in digimars.mak
* Do not use GC lock in GC_print_callers (refactoring)
* Do not use atomic intrinsic in assertion of GC_reclaim_generic
* Do not use deprecated _dyld_bind_fully_image_containing_address (Darwin)
* Do not use deprecated get_etext and get_end on Darwin
* Do not use deprecated getsectbynamefromheader_64 (Darwin)
* Do not use integer division in GC_soft_read_dirty
* Do not wrap mark_some to catch faults if libraries registration is off
* Document GC_ENABLE_SUSPEND_THREAD better in configure
* Document GC_print_free_list shortly in gc_inline.h
* Document GC_with_callee_saves_pushed better
* Document argument of GC_is_marked in gc_mark.h
* Document assumption about allocator lock for GC_clear_exclusion_table
* Document macros in config.h not referring to README (configure)
* Document that GC_is_X API functions may return only zero or one
* Document that GC_unregister_my_thread result value is dummy
* Eliminate 'array subscript has type char' compiler warnings in os_dep
* Eliminate 'atomic_thread_fence is unsupported with tsan' gcc-11 warning
* Eliminate 'boolean result used in bitwise op' cppcheck FP in GC_thr_init
* Eliminate 'cast discards const from target ptr type' clang warning in cord
* Eliminate 'cast discards const/volatile from target type' warnings in libgc
* Eliminate 'cast discards volatile from type' warnings in cordxtra, gctest
* Eliminate 'checking if 1U<<12 is less than zero' cppcheck FP warning
* Eliminate 'compound assignment with volatile left operand' g++ warning
* Eliminate 'conversion may change sign' clang warnings in cord and tests
* Eliminate 'increment for volatile-qualified type deprecated' g++ warning
* Eliminate 'n obtained from untrusted source' code defect FP in test_cpp
* Eliminate 'no previous prototype' clang warnings
* Eliminate 'parameter can be declared as const pointer' cppcheck warnings
* Eliminate 'scope of p variable could be reduced' cppcheck warning in de.c
* Eliminate 'skipping config since static_assert is unknown' cppcheck FP
* Eliminate 'struct treenode member is never used' cppcheck warning
* Eliminate 'volatile-qualified arg parameter' g++ warning in mach_dep.c
* Eliminate code duplication in GC_PREFETCH_FOR_WRITE generic definition
* Eliminate data race FP reported in need_unreachable_finalization by TSan
* Eliminate duplicate use of GC_obj_kinds[k] in GC_generic_malloc_many
* Enable HBLKSIZE values up to 64K
* Enable prefetch for MSVC (Windows/x86 and Windows/x64)
* Enable prefetch loop in GC_mark_from on E2K
* Enable without_libatomic_ops for targets requiring atomic_ops.c (CMake)
* Ensure GC is initialized when GC_push_all_stacks() is called (refactoring)
* Ensure GC_enable_incremental variable is accessed holding the lock
* Ensure GC_n_set_marks() does not count extra bits in hb_marks
* Ensure a collection occurs between adjacent heap expansions
* Ensure all macros defined in public cord_pos.h have 'CORD_' prefix
* Ensure const value has proper type before negation operation in msvc_dbg
* Ensure every test prints a message on success
* Ensure that GC_init does not allocate any object itself (refactoring)
* Explicitly check that word has at least 32 bits in shifts by 20+ bits
* Export CORD_ec_append_cord(), CORD_ec_flush_buf() from cord shared library
* Export CORD_oom_fn public variable from cord shared library
* Export GC_apply_to_all_blocks() and GC_is_black_listed() as public API
* Export get/set_abort_func even in case of SMALL_CONFIG
* Export get/set_manual_vdb_allowed even in case of SMALL_CONFIG
* Export setter and getter for pointer checking print procedures
* Fail threadkeytest on pthread_create error in main loop
* Fix 'possibly undefined macro AC_ENABLE_SHARED' autoreconf error
* Fix digimars.mak to build 'all' by default
* Fix double call of unregister_my_thread if thread registered by DllMain
* Fix thread_id variable definition placement in main of subthreadcreatetest
* Force pthread_mutex_lock usage for allocator lock if ThreadSanitizer
* Get libpthread.so '.text' mapping only for glibc prior to v2.34 (Linux)
* Group NEED_FIND_LIMIT definitions in gcconfig.h (refactoring)
* Group all thread id fields together in GC_thread (refactoring)
* Group char-width fields together in GC_arrays (refactoring)
* Group functions related to GC_calloc_explicitly_typed (refactoring)
* Implement LONG_MULT in portable way using multiplication of 32-bit words
* Implement shared locks and provide enable_rwlock build script option
* Improve ABORT message in GC_darwin_sigbus
* Improve GC_memalign and friends to always return object base pointer
* Include gc/gc[_cpp].h directly except for cord and tests (refactoring)
* Include gc_inline.h from gc_priv.h (refactoring)
* Include signal.h conditionally
* Include stdio.h and stdlib.h only from gc_priv.h (refactoring)
* Include sys/types.h and unistd.h from a single place (refactoring)
* Increase number of iterations in leak and middle tests
* Increment allocated objects count after GC_memalign in gctest
* Initial support of KOS/arm64
* Initialize GC_retry_signals to true in GC_stop_init (refactoring)
* Install ChangeLog among doc files
* Introduce READER_LOCK/UNLOCK macros (refactoring)
* Make abort message unique in write_fault_handler
* Make all functions static in msvc_dbg.c except for backtrace[_symbols]
* Make comparisons to the lowest heap boundary strict
* Make links to mentioned platforms/README files in doc .md files
* Make shift size smaller in GC_CLANG/GNUC/GLIBC_PREREQ (refactoring)
* Mark GC_add_roots_inner() as GC_INNER (refactoring)
* Mention CMake-based build in README.md and README.QUICK
* Mention all doc files in overview document
* Mention gc_allocator.h in README.win32 (documentation)
* Mention proper CURSES value in Makefile.direct to build cord/de test
* Minimize THREADS-specific code in GC_invoke_finalizers (refactoring)
* Minimize code difference between GC_push_marked/unconditionally
* More clear message about total duration of full collections in gctest
* Move GC_NO_THREADS_DISCOVERY definition to gcconfig.h (refactoring)
* Move GC_unblock_gc_signals to pthread_stop_world.c (refactoring)
* Move HAVE_CLOCK_GETTIME definition from gc_priv.h to gcconfig.h
* Move fields common between Concatenation and Function to Generic structure
* Move increment of GC_bytes_allocd to GC_alloc_large (refactoring)
* Move internals of GC_[signed_]word definition to gc_config_macros.h
* Move non-cord [pkg]include_HEADERS assignments to include.am (refactoring)
* Move non-license info from LICENSE file to README and vice versa
* Move platform-dependent getspecific() call to a dedicated function
* Move platform-specific README files to doc/platforms
* Move pthread_atfork() call to a separate function (refactoring)
* Move public header files to include/gc in source tree
* Move stack-related fields out of GC_thread to GC_stack_context_t
* Move thread-only functions to pthread_support.c (refactoring)
* Name all tests consistently (refactoring)
* Never use mmap() for storing procedure stack on E2K (refactoring)
* New API for disappearing links registration accepting interior pointers
* New API for more optimal usage of GC_calloc_explicitly_typed
* New API function (GC_get_hblk_size) to get HBLKSIZE value
* New API function (GC_set_interrupt_finalizers) to break finalizer loop
* New CMake option to link with external libatomic_ops (system library)
* New GC_count_set_marks_in_hblk and GC_iterate_free_hblks API functions
* New macro (NO_MANUAL_VDB) to disallow manual VDB mode
* New public function (get_supported_vdbs) to list available VDB techniques
* New public function GC_get_actual_vdb
* Order libgc .c files lexicographically in build scripts
* Output finalization information by GC_dump
* Pass ATOMIC_OPS_LIBS to tests using AO primitives directly (Automake)
* Prefix size_t and ptrdiff_t with namespace 'std' in C++ files
* Preserve doc folders structure on package install
* Prevent requesting blocks past max_heapsize in GC_collect_or_expand
* Prevent use of redirected posix_memalign in GC_haiku_get_mem
* Print heap size in bytes (not MB) in out-of-memory warning if small heap
* Print in-use heap statistic on heap growth
* Print iteration number on thread creation or join failure in tests
* Print objs_in_block as zero for large objects in GC_print_block_list
* Print thread number on marker thread creation failure
* Print value of links in GC_dump_finalization_links
* Provide GC_HIDE/REVEAL_NZ_POINTER public macros
* Provide GC_init_gcj_malloc_mp with argument of GC_mark_proc type
* Provide a macro to check dirty bits consistency between MPROTECT/SOFT_VDB
* Provide debugging variant of GC_toggleref_add
* Provide global non-throwing operator new/delete in gccpp library
* Provide one flag in each add_compile_options/definitions of CMake script
* Put faq.html to codebase, update it and convert it to Markdown format
* Put gc_badalc/cpp.cpp instead of .cc ones in CMake script (MSVC/BCC/WCC)
* Really ignore bad GC_INITIAL/MAXIMUM_HEAP_SIZE values
* Redirect GC_gcj_malloc_ignore_off_page to GC_gcj_malloc for small objects
* Redirect GC_malloc_explicitly_typed_ignore_off_page for small objects
* Redirect _aligned_malloc/free() in leak_detector.h
* Redirect aligned_alloc() and reallocarray() in leak_detector.h
* Reduce number of iterations in disclaim and cpp tests
* Reduce scope of local variables used for assertion checking in add_to_fl
* Reduce some of big constants in tests to fit into 16-bit int type
* Refactoring of GC_n_set_marks and GC_print_block_descr
* Refactoring of rt_hash()
* Refine WARN message in GC_proc_read_dirty regarding buffer size
* Refine column names output by GC_print_block_list
* Refine comment of LOG_PHT_ENTRIES for the case of impossible collisions
* Refine comments in code regarding DllMain-based threads registration
* Refine comparisons to GC_greatest_plausible_heap_addr
* Refine debug message in GC_suspend_handler_inner
* Refine documentation of GC_MALLOC_WORDS_KIND
* Refine documentation of GC_init_gcj_malloc and GC_get_back_ptr_info
* Refine documentation of GC_register_disclaim_proc and GC_finalized_malloc
* Refine gcinterface.md that the allocator belongs to SGI STL
* Refine main README about the ways available to build the library
* Refine that GC_save_regs_in_stack is used by save_callers only on SPARC
* Relax required dependencies for atomicopstest (CMake)
* Remove -o option where not needed in Makefile.direct (refactoring)
* Remove CORD_max_len debugging symbol
* Remove EXPORTED_FUNCTIONS linker flag for gctest (Emscripten)
* Remove GC_copyright symbol
* Remove GC_mark_threads variable (refactoring)
* Remove GC_min/max() and simplify heap bounds update in expand_hp_inner
* Remove GC_save/print_callers duplicate declaration (refactoring)
* Remove GC_world_is_stopped variable (refactoring)
* Remove IF_IA64 macro in pthread_stop_world (refactoring)
* Remove MAIN_THREAD flag in GC_thread (refactoring)
* Remove MARK_BIT_PER_GRANULE macro (refactoring)
* Remove OpenBSD uthreads (GC_OPENBSD_UTHREADS) support
* Remove STACK_GROWS_DOWN explicit definitions in gcconfig.h (refactoring)
* Remove STACK_GROWS_DOWN macro usage (refactoring)
* Remove Symbian makefile
* Remove USED_HEAP_SIZE macro (refactoring)
* Remove ancient OS2_MAKEFILE, PCR-Makefile, SMakefile.amiga
* Remove code duplication in GC_free[_inner] (refactoring)
* Remove code duplication in gcconfig.h for Hurd (refactoring)
* Remove comment from gc_cpp.h about bugs in ancient compilers
* Remove commented out code in de_win
* Remove de_win.h dependency on cord.h (refactoring)
* Remove doc.am, and move gc.man to base folder (refactoring)
* Remove duplicate 'called once' check in GC_init_lib_bounds (refactoring)
* Remove duplicate documentation of GC_UNDERSCORE_STDCALL in configure
* Remove duplication of random numbers generator formula (refactoring)
* Remove empty default cases in configure (refactoring)
* Remove extra parentheses in return statement (refactoring)
* Remove extra space after sizeof (reformatting)
* Remove extra variable and rename argument of GC_new_hblk (refactoring)
* Remove main_altstack group of static variables (refactoring)
* Remove main_pthread_id variable (refactoring)
* Remove msvc_dbg.h file (refactoring)
* Remove obsolete AC_PROG_LIBTOOL in configure.ac (refactoring)
* Remove oom_fn internal type from cord source (refactoring)
* Remove outdated info from README about Linux/m68k bug
* Remove private pthread_stop_world.h and darwin_stop_world.h (refactoring)
* Remove redundant 'private' prefix in include directives in include/private
* Remove redundant GC_ATTR_UNUSED for GC_mark_and_push
* Remove redundant HOST_TIZEN macro check for SEARCH_FOR_DATA_START
* Remove redundant Linux/SPARC checks (refactoring)
* Remove redundant check a predefined macro of BCC (refactoring)
* Remove redundant includes from tools and disclaim tests (refactoring)
* Remove specific DATASTART definition for ancient OpenBSD/m68k
* Remove thread_blocked field in GC_thread (refactoring)
* Remove trailing dot in WARN messages
* Remove unneeded cast to word in GC_PUSH_ONE_HEAP/STACK (refactoring)
* Remove unneeded casts in GC_PUSH_ALL_SYM (refactoring)
* Remove unneeded n_blocks local variable in malloc.c and reclaim.c
* Remove unprefixed GRANULE_BYTES, TINY_FREELISTS, WORDSZ macros
* Remove unreachable code in GC_lookup_pthread (refactoring)
* Remove unused DCL_LOCK_STATE (refactoring)
* Remove use of emscripten_scan_stack (refactoring)
* Remove volatile qualifier for GC_dirty_pages except for MPROTECT_VDB
* Remove volatile qualifier for GC_threads (pthreads)
* Remove warning at GC_init about USE_PROC_FOR_LIBRARIES and Linux threads
* Rename GC_[inner_]start_routine to match that for Win32 (refactoring)
* Rename GC_enclosing_mapping to GC_enclosing_writable_mapping (refactoring)
* Rename MAP_LEN internal macro to OBJ_MAP_LEN (refactoring)
* Rename README.QUICK to LICENSE and install it by default
* Rename README.rs6000 to README.aix
* Rename ROUNDED_UP_GRANULES macro to ALLOC_REQUEST_GRANS (refactoring)
* Rename doc folder to docs
* Rename stack[_size] in GC_Thread_Rep and GC_register_altstack (refactoring)
* Rename thread_args and GC_main_thread in win32_threads.c (refactoring)
* Reorder macro definitions for rare architectures in gcconfig.h
* Replace C style comments to C++ ones in gc_allocator.h
* Replace C-style casts in C++ headers and cpptest (refactoring)
* Replace GC_MARK_FO macro with inline functions (refactoring)
* Replace comments about GC is held or not with relevant assertions
* Replace hard-coded 0x80000000 to SIGNB for pointer-sized values
* Replace init_netbsd_elf with init_linux_data_start on NetBSD (refactoring)
* Replace obsolete AC_TRY_COMPILE/LINK/RUN in configure.ac (refactoring)
* Replace target names with '$@' in Makefile.direct (refactoring)
* Report 'none' if no machine-dependent code-to-use detected in configure
* Require to specify CPP_WORDSZ in gcconfig.h for each supported arch
* Return free memory to OS explicitly before getting new memory from OS
* Roundup size passed to GC_expand_hp
* Set name of GC marker threads on OpenBSD
* Simplify MacOS-related code in GC_register_data_segments (refactoring)
* Simplify code of GC_allochblk_nth (refactoring)
* Simplify code to define USE_x_SPECIFIC macros in thread_local_alloc.h
* Simplify expression to clear extra bits in add_ext_descriptor (refactoring)
* Simplify gcconfig code to define IRIX5 and ULTRIX on mips (refactoring)
* Simplify test_basics() and test_extras() in cordtest (refactoring)
* Specify GC_CALLBACK calling conventions for GC_mark_proc
* Specify all public headers without path prefix in documentation
* Specify that error conditions are unlikely to be true in threads code
* Specify that internal allocations failure is unlikely (refactoring)
* Specify that out-of-memory is unlikely in typed alloc and make descriptor
* State explicitly that license is MIT-style
* Support 32-bit mode on E2K
* Support CFLAGS_EXTRA in rare build scripts (NT/WCC_MAKEFILE, digimars.mak)
* Support Embox/x86 (single-threaded)
* Support GC_memalign with alignments greater than HBLKSIZE
* Support Linux/sw_64 (sunway-linux)
* Support QNX on arm[64] and x86[_64]
* Support ThreadSanitizer (GCC)
* Support building with Zig (experimental)
* Support client stop function properly in maybe_gc and collect_a_little
* Support disable_single_obj_compilation option in cmake script
* Support malloc redirection on E2K
* Support pointer mask/shift set at runtime
* Support saving procedure stack at an offset on E2K (multi-threaded only)
* Suppress a data race report in debug-related GC_n_set_marks
* Test garbage collection from a deep recursion in gctest
* Test manual self-suspend in gctest
* Test realloc() in leaktest
* Test that CORD_oom_fn variable could be set from cordtest
* Test world stop while other thread in deep recursion in gctest (pthreads)
* Treat GC_arrays as a part of internal memory when printing its size
* Treat warnings as errors in C++ code if configure --enable-werror
* Try find libatomic_ops installed by cmake if with_libatomic_ops (CMake)
* Turn on MAKE_BACK_GRAPH for all Linux architectures in cmake and configure
* Undefine PUSHn macros after use in win32_threads.c (refactoring)
* Uniform usage of IS_FORWARDING_ADDR_OR_NIL() and FORWARDED_ADDR()
* Uniform use of GC_lookup_by_pthread in GC_pthread_join/detach (refactoring)
* Unify GC_Thread_Rep and thread id type in win32_threads.c (refactoring)
* Unify GC_[mark_]lock_holder variable definition (refactoring)
* Unify comments about the allocator lock (documentation)
* Update next_random_no state using AO primitive
* Update time statistics about stopped marking even if abandoned
* Use AO primitive in GC_noop1 instead of no_sanitize attribute
* Use AO primitives in GC_RAND_NEXT instead of no_sanitize attribute
* Use AS_HELP_STRING consistently for AC_ARG_WITH in configure (refactoring)
* Use BZERO in GC_save_callers (refactoring)
* Use EXPECT in GC_add_to_heap, GC_lookup_thread and GC_lookup_by_pthread
* Use EXPECT in checks of MAIN_THREAD bit (refactoring)
* Use GC_HIDE_NZ_POINTER() for hiding ci_arg value in GC_save_callers
* Use GC_delete_thread instead of GC_delete_gc_thread_no_free (refactoring)
* Use GC_printf in cpptest consistently (refactoring)
* Use IS_PTRFREE() consistently (refactoring)
* Use LOGWL to define WORDS_TO_BYTES() and BYTES_TO_WORDS() (refactoring)
* Use __typeof__ in GC_PTR_ADD and similar if MS Clang
* Use a dedicated integer type to hold function pointers (refactoring)
* Use a macro internally to designate Cygwin and MSWin/WinCE (refactoring)
* Use a macro internally to designate Free/Net/OpenBSD (refactoring)
* Use cast to void instead of the attribute to indicate unused arguments
* Use consistent variables naming in typd_mlc.c (refactoring)
* Use distinct MACH_TYPE for WebAssembly (refactoring)
* Use inline keyword in GC_INLINE (bcc)
* Use modHBLKSZ where possible (refactoring)
* Use register_my_thread_inner to add initial thread in pthread_support.c
* Use signed_word instead of ptrdiff_t for pointers delta (refactoring)
* Use single-argument suspend_handler for E2K, HP_PA, IA64, M68K
* Use unsigned32 type for all internal 32-bit variables and literals
* Warn if heap has grown while GC was disabled
* Workaround 'TEXT is unknown macro' cppcheck FP warning
* Workaround 'data access w/o lock' code defect FP in GC_incr_bytes_freed
* Workaround 'returning pointer to local variable base' cppcheck FP in misc
* Workaround 'total_time<0 is always false' cppcheck FP warning
== [8.2.6] 2024-02-04 ==
* Avoid unexpected heap growth in gctest for the case of VERY_SMALL_CONFIG
* Change gc.man to include gc/gc.h
* Check for out-of-memory on every memory allocation in tests
* Do not compile pthread_start.c on Cygwin even if build shared libs (CMake)
* Eliminate 'alloc_small declared but unused' gcc warning in gctest
* Eliminate 'make_key is defined but unused' gcc warning in threadkeytest
* Eliminate 'old_segv_handler is defined but unused' gcc warning on OpenBSD
* Eliminate 'rand() may return deterministic values' warning
* Eliminate 'unused parameter' compiler warnings reported by MS clang
* Eliminate 'unused parameter' gcc warning in free() if IGNORE_FREE
* Eliminate 'unused value' gcc warnings in init_global_static_roots (Symbian)
* Eliminate GCC warning of unsafe __builtin_return_address(1) in Cmake script
* Eliminate compiler warning of missing cast in LONG_MULT after shift
* Eliminate warning of unused expression result in GC_FreeBSDGetDataStart
* Ensure _GNU_SOURCE is defined if HAVE_DLADDR is defined by configure
* Fix 'g++ not found' error on OpenBSD (Makefile.direct)
* Fix 'implicit declaration of function pthread_atfork' gcc error on MinGW
* Fix 'implicit declaration of function sbrk' gcc error on Symbian
* Fix 'implicit declaration of iscntrl()' warning in cord/de_win (MinGW)
* Fix 'info' buffer potential overrun in GC_save_callers
* Fix 'l-value specifies const object' MSVC error in GC_push_many_regs
* Fix 'linker input unused' error inside check_c_compiler_flag (CMake)
* Fix 'missing binary operator before token' gcc error in gcconfig.h
* Fix 'missing sysconf() prototype' gcc error in setjmp_t tool (OpenBSD)
* Fix 'sigset_t undeclared' MS VC error if pthreads-w32 is used
* Fix 'undefined reference' linker errors if shared build on OpenBSD (CMake)
* Fix 'unused GC_set_and_save_fault_handler' warning on OS X
* Fix GC_push_stack_for() to push also Xmm registers on Windows/x64
* Fix GC_set_handle_fork(1) on Darwin when MPROTECT_VDB but no threads
* Fix MACH_TYPE macro redefinition on Symbian/arm
* Fix SVR4 macro definition order
* Fix asm constraint in LONG_MULT for gcc/x86
* Fix assertion violation in GC_get_maps on Linux if malloc redirection
* Fix back graph and checksums support in WCC_MAKEFILE
* Fix bitwise negation and rounding direction in setjmp_t tool
* Fix checksums GC_record_fault invocation on Darwin
* Fix closing bracket placement for case statement in configure
* Fix deprecation warning about support of CMake older than v3.5
* Fix extra 'extern C' for include signal.h in gcconfig.h
* Fix getcontext() detection by CMake on OpenBSD
* Fix handling of GC_gc_no counter wrap in GC_clear_stack
* Fix handling of GC_gc_no counter wrap in GC_notify_or_invoke_finalizers
* Fix indent of a closing curly brace in GC_forward_exception
* Fix lock assertion violation in GC_try_to_collect_inner on OS X
* Fix missing GC_pthread_sigmask on FreeBSD and NetBSD
* Fix missing _setjmp() on djgpp
* Fix missing atomic barriers in CORD_from_file_lazy
* Fix missing outermost parentheses in CORD_pos_cur_char_addr and hugetest
* Fix missing redirect and implementation of pthread_sigmask() on OpenBSD
* Fix missing type widening before left shift in GC_MAKE_PROC
* Fix misspelled GC_HEADERS_H macro in gc_priv.h
* Fix null dereference in check_finalizer_nested if redirect malloc on Linux
* Fix posix_memalign() to overwrite pointer storage only on success
* Fix race in init_lib_bounds on Linux with glibc v2.34+ if redirect malloc
* Fix skipped removal of page protection in case of address hash collision
* Fix typos in comments
* Fix undefined GC_real_pthread_sigmask if redirect malloc on OS X
* Fix update of last_back_trace_gc_no if KEEP_BACK_PTRS is not defined
* Handle GC_gc_no counter overflow properly in GC_print_trace
* Include Darwin CoreFoundation.h only if 32-bit ARM
* Make gc_allocator<void> members public
* Re-enable incremental mode on OS X (arm64)
* Remove .log and cordtest .tmp files by 'make clean' (Makefile.direct)
* Remove a redundant check of HOST_ANDROID in gcconfig.h
* Remove duplication of random numbers generator formula
* Specify constexpr in GC allocators if C++20 or later
* Support NetBSD/riscv64
* Support non-msys MinGW build by CMake
* Turn on handle fork by default on Darwin (multi-threaded only)
* Use AO primitives in GC_RAND_NEXT instead of no_sanitize attribute
* Workaround 'malloc inconsistent dll linkage' MS VC error in CMake script
* Workaround MS Clang failure to compile de_win.rc
* Workaround mark stack overflow in GC_push_finalizer_structures on MinGW
== [8.2.4] 2023-05-26 ==
* Abort with appropriate message if first call of mmap fails with EPERM
* Adjust CORD_ec comment placement in ec.h
* Adjust WoW64 workaround to work on UWP/WinRT
* Adjust naming of Win32/64 and x86/64 words in comments and documentation
* Avoid potential race between realloc and GC_block_was_dirty
* Do not double-clear first two words of object in GC_generic_malloc_aligned
* Do not mention FASTLOCK in comment
* Do not mix debug and non-debug allocations in disclaim tests
* Do not prohibit threaded builds with malloc redirection on non-Linux
* Do not prohibit zero proc argument in GC_register_disclaim_proc
* Eliminate '&array may not produce intended result' wcc warnings
* Eliminate 'GC_unmap_end declared but unused' bcc warning in disclaim_bench
* Eliminate 'ISO C++17 does not allow register specifier' gcc warning
* Eliminate 'cast signed to bigger unsigned' CSA warning in WARNs, new_thread
* Eliminate 'n obtained from untrusted source' code defect FP in test_cpp
* Eliminate 'skipping config since MAXSIG/_NSIG is unknown' cppcheck FP
* Eliminate data race FP between remove_protection and write_fault_handler
* Eliminate data race FP reported in need_unreachable_finalization by TSan
* Ensure 'new' system header is included by gc_cpp.h if GC_INCLUDE_NEW
* Ensure GC_NO_PTHREAD_SIGMASK defined if no GC_pthread_sigmask prototype
* Fix 'EMSCRIPTEN macro redefined' compile error
* Fix 'ISO C90 forbids mixed decl and code' warning in SOFT_VDB dirty_init
* Fix 'call to undeclared pthread_setname_np' errors in configure and cmake
* Fix 'failed to create new win32 semaphore' Cygwin fatal error at fork
* Fix 'operator new is missing throw(bad_alloc)' clang warning in gc_cpp.h
* Fix 'overflow in conversion from word' g++ warning in GC_init
* Fix 'unknown option --no-undefined' linker error in cmake script (OS X)
* Fix 'unresolved _end' linker error when targeting Android bitcode
* Fix CORD_next() indent inside loop in test_basics() of cordtest
* Fix DCL_LOCK_STATE placement in GC_set_oom_fn
* Fix GC_excl_table overrun on overflow in GC_exclude_static_roots
* Fix GC_thread_is_registered for finished threads
* Fix GC_unreachable_finalize_mark_proc to ensure its unique address
* Fix GC_unregister_my_thread call before GC functions usage in gctest
* Fix IRIX5 defined wrongly on FreeBSD/mips, WinCE/mips, Tandem S-Series
* Fix allocated objects count increment in alloc8bytes of gctest
* Fix alt-stack handling in GC_push_all_stacks if stack grows up
* Fix comparisons to heap boundary in GC_get_back_ptr_info and GC_mark_from
* Fix data race in GC_heapsize_at_forced_unmap variable
* Fix description of client promise for IGNORE_OFF_PAGE allocated objects
* Fix disabling of automatic dynamic libraries registration
* Fix double initialization of main thread local free lists on Win32
* Fix gccpp and gctba library names in gcinterface.md
* Fix infinite loop in disable_gc_for_dlopen and GC_wait_for_gc_completion
* Fix infinite wait in pthread_join/detach if thread already finished (Win32)
* Fix joinable threads shutdown on NaCl
* Fix loop condition over dll_thread_table in GC_lookup_pthread (Win32)
* Fix missing GC_CALLBACK for GC_waitForSingleObjectInfinite
* Fix missing extern C for __asan_default_options
* Fix missing libalphagc.so dependency in Makefile.direct
* Fix missing lock while updating GC_in_thread_creation in GC_exit_check
* Fix missing recovery from faults in GC_mark_some on Win64 if MinGW
* Fix missing result check of pthread_attr_getdetachstate in pthread_create
* Fix mistyped function name in documentation of REDIRECT_REALLOC
* Fix negative heap size values reported in WARN
* Fix null pointer dereference in TRACE_TARGET
* Fix of GC_bytes_allocd increment in GC_generic_malloc_inner
* Fix overlapping region assertion in mark_some if malloc redirect on Linux
* Fix potential SIGSEGV on out-of-memory in gctest
* Fix signals delivery fail in find-leak mode if init from non-main thread
* Fix stack top/bottom print order in GC_push_all_stacks if stack grows up
* Fix store-and-dirty call in GC_CONS
* Fix unregistering of thread created by intercepted pthread_create on NaCl
* Fix unused GC_parse_version if no SOFT_VDB and no parallel mark on Linux
* Fix use of unset errno after pthread_create/sigmask calls
* Fix various typos in comments and documentation
* Increment allocated objects count after GC_GCJ_MALLOC() in gctest
* Invoke GC_oom_fn if GC_make_array_descriptor failed because of no memory
* Make Emscripten Asyncify feature optional
* Mention gctba library in README.cmake
* Prevent 'function should return a value' BCC error in CMake script
* Provide meaningful error message in case of Emscripten threaded build
* Reduce local variable scope in resend_lost_signals_retry for cppcheck
* Remove disable-warning options from WCC_MAKEFILE unrecognized by wcc v2.0
* Remove false warning of missing libpthread.so on Linux
* Remove redundant 'ifdef THREADS' around LOCK/UNLOCK in call_with_alloc_lock
* Remove redundant GC_ATTR_UNUSED for GC_mark_and_push
* Remove unused GC_old_sig_mask from gc_locks.h
* Replace WARN in GC_mark_some wrapper back to GC_COND_LOG_PRINTF
* Specify throw and noexcept for operator new/delete in gc_cpp.h for MS VC
* Support Hurd/x86_64
* Support client-defined stack pointer adjustment before thread stack push
* Suppress 'unreachable code' wcc warning in I_HOLD_LOCK assertion (CMake)
* Update autotools for release preparation (ac-2.71, am-1.16.5, m4-1.14.19)
* Update dump function name in GC_DUMP_REGULARLY variable documentation
* Use emscripten_stack_get_base instead of emscripten_scan_stack
* Use sbrk() to get OS memory on Emscripten
* Workaround 'writing into region of size 0' gcc warning in suspend_handler
* Workaround CSA null pointer dereference FP in invalidate_map of cord/de
* Workaround a malfunction of soft-dirty bits clearing on Power9
== [8.2.2] 2022-08-26 ==
* Abort if no progress with thread suspend/resume signals resending
* Add CMake option to force libatomic_ops headers usage
* Add _PROP suffix to CORD/GC[CPP]_VERSION variables in CMake script
* Allow not to bypass pthread_cancel hardening in pthread_start
* Allow to start marker threads in child of single-threaded client
* Avoid potential race in GC_init_real_syms after GC_allow_register_threads
* Avoid potential signal loss before sigsuspend in suspend_handler if TSan
* Define SUNOS5SIGS macro for kFreeBSD
* Distribute gc_gcj.h and some other headers in single-obj-compilation
* Do not assert that GC is initialized at DLL_THREAD_DETACH (Win32)
* Do not call SET_HDR() to remove forwarding counts if none exists in hblk
* Do not call mprotect/mmap to GC_unmap/remap (Linux)
* Do not count unmapped regions if GC_unmap is madvise-based (Linux)
* Do not define NEED_FIND_LIMIT in case of OpenBSD user threads
* Do not fail tests if pthread_create returns resource unavailable error
* Do not name GCC intrinsics as C11 ones
* Do not probe to find main data root start if dl_iterate_phdr exists
* Do not send signal to thread which is suspended manually
* Do not use usleep between signals resend if ThreadSanitizer
* Eliminate '-pedantic is not option that controls warnings' GCC-6.3 message
* Eliminate '/GS can not protect parameters' MS VC warning in msvc_dbg
* Eliminate 'R_AARCH64_ABS64 used with TLS symbol' linker warning (clang)
* Eliminate 'buffer overflow detected' FP error in realloc_test
* Eliminate 'extension used' clang warning in sparc_mach_dep.S (configure)
* Eliminate 'function/data pointer conversion in expression' MSVC warning
* Eliminate 'implicit decl of _setjmp' gcc warning if -std=c11 on Cygwin
* Eliminate 'layout of aggregates has changed in GCC 5' warning in test_cpp
* Eliminate 'new_l may be used uninitialized' gcc warning in os_dep (Cygwin)
* Eliminate 'old_gc_no is initialized but not referenced' MS VC false warning
* Eliminate 'possible loss of data' compiler warning in GC_envfile_getenv
* Eliminate 'potentially uninitialized local variable tc' warning (MSVC)
* Eliminate 'skipping config since MAX_HEAP_SECTS is unknown' cppcheck FP
* Eliminate 'unused but set variable' gcc warnings in cpptest
* Eliminate 'value exceeds maximum size' warnings in debug_malloc, huge_test
* Eliminate 'writing into region of size 0' gcc FP warning in realloc
* Eliminate ASan stack-buffer-underflow FP in GC_mark_and_push_stack (E2K)
* Eliminate code defect about incorrect size of allocated object (leaktest)
* Eliminate data race reported by TSan in GC_have_errors
* Eliminate division-by-zero FP warning in GC_ASSERT in reclaim_block
* Eliminate stringop-overflow gcc-12 warning in CORD__next
* Ensure typed objects descriptor is never located in the first word
* Fix 'GC_greatest_stack_base_below is defined but not used' warning (IA64)
* Fix 'GC_text_mapping not used' GCC warning if redirect malloc w/o threads
* Fix 'ISO C forbids conversion of function pointer to object' warning
* Fix 'undeclared getpagesize' compiler warning on AIX and OSF1
* Fix 'undefined reference to __data_start' linker error on Linux/aarch64
* Fix 'unresolved __imp__wsprintfA' linker error in msvc_dbg.c (MSVC)
* Fix 'unresolved symbol GetModuleHandle' error in win32_threads.c (UWP)
* Fix (workaround) stack overflow in gctest on Alpine Linux/s390x
* Fix GC_ATTR_NO_SANITIZE_THREAD definition for GCC
* Fix GC_allocate_ml incorrect cleanup in GC_deinit if pthreads (MinGW)
* Fix GC_dirty() argument in GC_malloc_explicitly_typed_ignore_off_page
* Fix GC_make_descriptor for zero length argument
* Fix GC_suspend_thread if called before thread destructor
* Fix GC_unmapped_bytes update in GC_unmap for Sony PS/3
* Fix SIGSEGV caused by dropped stack access from child process in gctest
* Fix SUNOS5SIGS documentation to match macro definition in gcconfig.h
* Fix abort in Win32 DllMain if PARALLEL_MARK
* Fix abort when GC_repeat_read returns zero
* Fix assertion about built-in AO_test_and_set_acquire on sparc64 (gcc-12)
* Fix assertion violation in GC_allow_register_threads on Windows
* Fix assertion violation of GC_thread_key alignment if pthread-based TLS
* Fix comment in GC_init regarding GC_init_parallel call
* Fix context saving when GC_suspend_thread(self)
* Fix data race in fail_proc1 of gctest
* Fix hang in GC_free if GC_PREFER_MPROTECT_VDB (Mingw64)
* Fix hang in select() called from suspend signal handler if TSan
* Fix hang on sem_wait in GC_suspend_thread if thread was resumed recently
* Fix hb_obj_kind type in documentation (ASCII diagram) describing hblkhdr
* Fix incremental mode enabling in gctest if TEST_MANUAL_VDB
* Fix linking of tests in case of finalization is off
* Fix lock assertion violation in GC_find_limit if always multi-threaded
* Fix memory return to OS in GC_unmap
* Fix missing lock when GC_generate_random_valid_address is called
* Fix missing write() declaration if CONSOLE_LOG (Watcom)
* Fix nodist_libgc_la_SOURCES value in Makefile.am for Solaris/sparc
* Fix oldProc initialization in gc_cleanup and eliminate related warnings
* Fix parallel_initialized assertion violation in initsecondarythread (Win32)
* Fix potential race if start_mark_threads called from threads in child
* Fix propagation of out-of-memory occurred in GC_make_sequence_descriptor
* Fix pthread_setname_np and dladdr detection by CMake
* Fix race between calloc_explicitly_typed and push_complex_descriptor
* Fix typos in comments and debugging.md
* Fix undefined __stack_base__ on UWP/arm64 (llvm-mingw)
* Force GC_with_callee_saves_pushed in suspend_handler if NO_SA_SIGACTION
* Link with rt library to get clock_gettime where necessary
* Make finalizer_closure pointer read/write atomic in malloc and callback
* Move platform-specific sleep call to GC_usleep (refactoring)
* Pass -lrt linker option in CMake script on HP/UX, NetBSD
* Prevent (fix) parallel custom mark procs run in single-threaded clients
* Prevent changing of GC_markers_m1 value while collection in progress
* Refer to Makefile.direct instead of deleted Makefile file in README
* Relax assertion of hb_n_marks in reclaim_block if more than two markers
* Remove IF_IA64 macro in pthread_stop_world (refactoring)
* Remove checking of RS6000 completely
* Remove duplicate check of MSWIN_XBOX1 in os_dep.c
* Remove duplicate include gc_tiny_fl.h in gc_priv.h
* Remove non-working check of M68K in gctest
* Remove useless TSan W/A about read of mark_lock_holder for Windows
* Replace RAISE_SIGNAL macro with a static function (refactoring)
* Replace SSH cloning with HTTPS one in README
* Retry pthread_kill if EAGAIN (Linux)
* Revert "Check real-symbols are already initialized in pthread_join/detach"
* Revert "Remove nested always-false ifdef for HPUX and FREEBSD"
* Revert addition of msvc_dbg.h in include.am
* Set default build type to RelWithDebInfo (CMake)
* Start configure help messages with a lower case letter
* Support 'z' format modifier by CORD_vsprintf
* Support Elbrus 2000 (Linux/e2k)
* Support GCC MCF thread model (mcfgthreads) in configure (MinGW)
* Support GC_remove_roots on Win32
* Support OpenBSD/riscv64
* Support build using Makefile.direct on Linux/sparc
* Support space-separated flags in CFLAGS_EXTRA passed to CMake
* Update README.win32 about default build configuration (configure, cmake)
* Update documentation of GC_RATE and MAX_PRIOR_ATTEMPTS
* Use SIGRTMIN+6 as suspend signal if sigrt-signals on OpenBSD
* Use SIGUSR1/2 on FreeBSD/arm64
* Use compiler TLS on NetBSD only if at least gcc-4.4 or clang-3.9
* Workaround 'info is not assigned' cppcheck FP if assertions on (OS X)
* Workaround SIG_SUSPEND delivery to thread inside mutex_lock fail if TSan
* Workaround TSan FP about race between generic_malloc and array_mark_proc
* Workaround TSan FP in acquire_mark_lock called from fork_prepare_proc
* Workaround TSan FP warning in finalized_malloc, push_unconditionally
* Workaround TSan FP warning in fork_prepare_proc
* Workaround TSan FP warning in push_marked1/2/4, ptr_store_and_dirty
* Workaround Thread Sanitizer (TSan) FP warning in is_valid_displacement
* Workaround call stack size exceeded in gctest (Wasm)
* Workaround crash in FreeBSD rand() by avoiding its concurrent usage
* Workaround gctest hang if test compiled as C++ code by MSVC (CMake)
* Workaround msvc_dbg.c build failure on arm[64] (MSVC)
== [8.2.0] 2021-09-29 ==
* Add API for accessing incremental GC time limit with nanosecond precision
* Add API function to force start of incremental collection
* Add GC_ prefix to scan_ptr and some other static variables (refactoring)
* Add GC_get/set_disable_automatic_collection API
* Add I_HOLD_LOCK assertion to expand_hp_inner and related functions
* Add assertion on free-list argument and result of GC_new_kind
* Add assertion that GC is initialized to base incremental_protection_needs
* Add assertions that GC_page_size is initialized
* Add cordtest, staticrootstest, test_cpp, tracetest, disclaim tests (CMake)
* Add debug messages on thread suspend/resume (Win32)
* Add dummy testing of GC_incr_bytes_allocd/freed
* Add table of contents in gcdescr.md
* Add testing of GC_CALLOC/MALLOC_EXPLICITLY_TYPED (gctest)
* Adjust formatting of numbered lists in README.md to match other .md files
* Adjust highlighting of API prototypes in gcinterface.md
* Adjust macro def/usage for AVR32, CRIS, NETBSD, OPENBSD, SH4 in gcconfig.h
* Adjust printf calls in gctest check_heap_stats so that each has new-line
* Allow incremental GC on Cygwin
* Allow memory unmapping in case of MPROTECT_VDB
* Allow to disable GWW or mprotect-based VDB at build
* Allow to disable Glibc FPU exception mask and TSX workarounds (Linux)
* Allow to disable __builtin_return_address(1) usage (x86 and x64)
* Allow to specify custom value of LOG_PHT_ENTRIES
* Always abort on failure to access /proc/self/maps (Linux)
* Always define default_push_other_roots (code refactoring)
* Avoid gcc stringop-overflow warning for intended overflow in smashtest
* Avoid initial 3ms pause on world stop/start with GC_retry_signals (Linux)
* Build cord.lib by Makefile.direct, NT_MAKEFILE, OS2_MAKEFILE, WCC_MAKEFILE
* Build gc as a shared multi-threaded library by default (CMake)
* Build gccpp library by Makefile.direct, NT_MAKEFILE and WCC_MAKEFILE
* Build gctba library
* Build shared libraries by default (WCC_MAKEFILE)
* Change CLOCK_TYPE to timespec for Nintendo Switch (code refactoring)
* Change EMSCRIPTEN macro for internal use to no-underscore format
* Change log_size fields of finalizer to unsigned type (code refactoring)
* Change type of toggleref_array_size/capacity to size_t (code refactoring)
* Check leak of objects allocated by CRT malloc in gctest (MS VC)
* Check real-symbols are already initialized in pthread_join/detach
* Collapse multiple includes of windows.h (code refactoring)
* Comments reformatting in mark.c to properly delimit sentences
* Compile de test GUI app with resources (CMake)
* Compile gc.c unless building static libraries (NT_MAKEFILE, WCC_MAKEFILE)
* Compile msvc_dbg.c by CMake script (MS VC)
* Declare API function and print amount of memory obtained from OS
* Define GC_win32_free_heap API function for all Windows targets
* Define STATIC macro to static by default
* Depend number of fork_a_thread calls on NTHREADS (gctest)
* Detect dladdr() presence in CMake script
* Detect presence of execinfo.h system header in CMake script
* Detect presence of getcontext and dl_iterate_phdr in CMake script
* Detect sigsetjmp() availability in CMake script
* Disable Clang/GCC aliasing optimization in CMake script by default
* Do not build tests by default (Makefile.direct and other Makefiles)
* Do not build the tests by default (CMake)
* Do not call GC_push_conditional unless PROC_VDB
* Do not call add_to_our_memory with null pointer (refactoring)
* Do not compile pthread_*.c files in Cygwin or MSYS (CMake)
* Do not define GC_write_cs for Xbox One target
* Do not define HAVE_NO_FORK for all Unix-like systems
* Do not hard-code CMAKE_DL_LIBS value and install paths (CMake)
* Do not hard-code finalizable objects limit which triggers GC
* Do not update scratch_last_end_ptr unless used by reg dynamic libraries
* Document GC_incr_bytes_allocd/freed API function
* Eliminate '(long)size<=0 is always false' cppcheck FP
* Eliminate 'Consecutive return is unnecessary' cppcheck style warning
* Eliminate 'accessing GC_dont_gc without lock' in GC_init code defect FP
* Eliminate 'bytes_freed access w/o lock in incr_bytes_free' code defect FP
* Eliminate 'checking if unsigned i < 0' cppcheck FP in is_heap_base
* Eliminate 'hash_val value is never used' cppcheck false positive
* Eliminate 'passing tainted var maps_buf to tainted sink' code defect FP
* Eliminate 'retry_cnt is assigned value but never used' cppcheck FP
* Eliminate 'stop variable is always 0' compiler warning in print_callers
* Eliminate 'struct member os_callback is never used' cppcheck warning
* Eliminate 't->flags not atomically updated' code defect FP
* Eliminate 'tmpl might be accessed at non-zero index' cppcheck error
* Eliminate GCC warning of unsafe __builtin_return_address(1)
* Eliminate code duplication in reclaim_clear and disclaim_and_reclaim
* Eliminate double lock code defect false positive in generic_lock
* Eliminate memory leak reported in add_current_malloc_heap at exit (Win32)
* Emscripten single-threaded support (detect stack base, push registers)
* Enable CMake-based build for Borland and Watcom compilers
* Enable compilation without C runtime (Win32)
* Enable fork testing in single-thread builds (Unix-like)
* Enable mprotect-based incremental GC for Linux/arm and Linux/aarch64
* Enable true incremental collection even if parallel marker is on
* Enable use of __builtin_unwind_init() if clang-8 or later
* Ensure ELFSIZE is defined in dyn_load.c for OpenBSD (code refactoring)
* Ensure add_to_heap_inner arguments are valid (refactoring)
* Ensure all getters and setters are run at least once by gctest (pthreads)
* Export CMake targets with namespace BDWgc
* Fix 'const obj must be initialized if not extern' error in gc_alloc_ptrs.h
* Fix ./libgc.la dependency on FreeBSD (Automake)
* Fix HOST determination in CMake script
* Fix copyright message in de_win.rc, gc_cpp.cc, ec.h and specific.h
* Fix missing OS_TYPE definition for some targets
* Fix mmap(PROT_NONE) failure if RLIMIT_AS value is low (Linux)
* Generate cordtest and de executable files in GC base folder
* Generate pkg-config metadata file (CMake)
* Get rid of some non-ELF ifdefs (code refactoring)
* Handle potential incomplete buffer read in GC_linux_main_stack_base
* Implement GET_TIME for Nintendo Switch
* Increase NTHREADS value in tests if code coverage analysis
* Install docs and man page if enable_docs (CMake)
* Install gc_gcj.h and gc_pthread_redirects.h only if appropriate
* Log abort message details even if not print_stats (unless SMALL_CONFIG)
* Mark buffer returned by get_maps as const (code refactoring)
* Move C++ GC_ATTR_EXPLICIT and GC_NOEXCEPT definition to gc_config_macros.h
* Move GC state non-pointer variables into GC_arrays (code refactoring)
* Move GC state pointer variables into GC_arrays
* Move GC_scratch_recycle_inner() to alloc.c (refactoring)
* Move GC_throw_bad_alloc definition to new C++ file
* Move QNX and Emscripten macro definitions to proper place in gcconfig.h
* Move definition of GC_n_mark_procs and GC_n_kinds from mark.c to misc.c
* New API (GC_set_markers_count) to control number of parallel markers
* New API function to clear GC exclusion table
* New API function to get size of object debug header
* New API standalone functions to acquire and release the allocator lock
* New CMake option (disable_gc_debug) to remove debugging code
* New CMake option (disable_handle_fork) to disable fork handling completely
* New macro (CONSOLE_LOG) to enable logging to console on Win32
* New macro (GCTEST_PRINT_VERBOSE) to enable verbose logging in test.c only
* New macro (NO_MSGBOX_ON_ERROR) to avoid message box on GC abort (Win32)
* OpenBSD does not use ELF_CLASS (code refactoring)
* Pass -D GC_DLL -fvisibility=hidden if default configure build is requested
* Pass -no-undefined linker flag if building shared libraries (CMake)
* Print pid of child processes if verbose logging (gctest)
* Read environment variables from a file on WinCE (CMake script)
* Reduce stack-allocated buffer in get_nprocs from 4KB to 1.7KB
* Refine flags field comment in pthread_support.h
* Reflect result of VDB selection at runtime in incremental_protection_needs
* Reformat code of GC_push_roots
* Reformat gc.man (wrap long lines)
* Reformatting and code refactoring of CMake script
* Remove 'current users' section from overview.md
* Remove 'distributed ports', 'scalable versions' sections from overview.md
* Remove AC_MSG_RESULT for THREADDLLIBS (dgux386)
* Remove Borland-specific Makefile and gc.mak script
* Remove GC_eobjfreelist variable in typd_mlc.c (code refactoring)
* Remove GC_gcj_malloc_initialized variable (code refactoring)
* Remove Linux-specific commands for building cord/de from Makefile.direct
* Remove Win32 main_thread static variable if threads discovery is disabled
* Remove code duplication between GC_unmap and GC_unmap_gap (refactoring)
* Remove code duplication between PROTECT and UNPROTECT macros (refactoring)
* Remove commented out assignment of gc_use_mmap in configure (refactoring)
* Remove dash characters comprising prefix of some verbose logs (gctest)
* Remove dependency on user32.dll import library from static libgc (Win32)
* Remove documentation specific to particular old BDWGC releases
* Remove duplicate Linux-related macro definitions in gcconfig.h
* Remove duplicate macro definitions in gcconfig.h except for Linux
* Remove gcmt-dll generation, rename libgc-lib.a to libgc.a (CMake)
* Remove goto statement in print_callers (code refactoring)
* Remove limit on number of heap sections
* Remove new_gc_alloc.h file
* Remove redundant GC_with_callee_saves_pushed call in multi-threaded builds
* Remove redundant check of GC_free argument in register_finalizer
* Remove redundant type casts in backgraph HEIGHT_UNKNOWN/IN_PROGRESS
* Remove unused GC_prev_heap_addr (refactoring)
* Remove unused STACK_GRAN macro definitions (code refactoring)
* Remove unused sparc_sunos4_mach_dep.s file
* Remove useless empty statements after block ones (refactoring)
* Remove weakobj_free_list variable in disclaim_weakmap_test (refactoring)
* Rename READ to PROC_READ in os_dep.c (code refactoring)
* Rename cord/cord test executable to de (CMake)
* Rename ext_descr to typed_ext_descr_t (code refactoring)
* Rename gc64.dll to gc.dll and gc[64]_dll.lib to gc.lib in NT_MAKEFILE
* Rename gc68060.lib to gc.lib, cord/cord68060.lib to cord.lib in SMakefile
* Rename make_as_lib option to enable_static in NT_MAKEFILE and WCC_MAKEFILE
* Rename nothreads option to disable_threads in NT_MAKEFILE
* Repeat run_one_test NTHREADS times by gctest if single-threaded
* Replace "msecs" with "ms" in all comments and messages
* Replace 'stack base' with 'stack bottom' in the documentation
* Replace SN_TARGET_ORBIS to PLATFORM_* and GC_NO_* macros
* Replace _M_AMD64 macro with _M_X64 (code refactoring)
* Replace find_limit_openbsd to find_limit_with_bound (OpenBSD 5.2+)
* Replace obsolete AC_HELP_STRING with AS_HELP_STRING (refactoring)
* Replace push_one calls with push_many_regs one for Win32 thread context
* Report memory region bounds and errno on GC_unmap/remap failure
* Report presence of process fork testing (gctest)
* Report time with a nanosecond precision where available
* Retry suspend/resume signals on all platforms by default
* Run tree and typed tests in child process (gctest)
* Set GC_collecting hint for GC_collect_a_little_inner calls (pthreads)
* Set name of GC marker threads
* Set so-version for installed shared libraries (CMake)
* Simplify logged message in scratch_recycle
* Simplify loops of collect_a_little/stopped_mark invoking mark_some
* Support -fvisibility=hidden option in CMake script
* Support CFLAGS_EXTRA to pass extra user-defined compiler flags (CMake)
* Support FreeBSD/RISC-V, Linux/arc, LoongArch, OpenBSD/powerpc64
* Support header files installation (CMake)
* Support most configure options in CMake script
* Suppress warnings in test_tinyfl() of gctest reported by Watcom C complier
* Take nanoseconds into account when updating full_gc_total_time
* Turn off C++ API by default, export it in gccpp library (CMake)
* Turn on automatic fork() handling by default on Android
* Update README.cmake regarding Unix, C++ and tests
* Update libgc.so version info to differentiate against v8.0.x
* Update the ASCII diagrams describing the tree structure for pointer lookups
* Update the documentation to match the current GC implementation
* Upgrade cmake_minimum_required(version) to 3.1
* Use CreateThread without GC_ prefix in gctest (code refactoring)
* Use KB/MB/GB abbreviations uniformly across entire documentation
* Use USE_MMAP_ANON when USE_MMAP is configured on OpenBSD
* Use a specific Emscripten allocator for Tiny
* Use atomic primitives for Sony PlayStation Portable 2 and PS4
* Use better precision Windows timers
* Use clock_gettime() instead of clock() on Cygwin and Linux
* Use compiler TLS on FreeBSD and NetBSD