7.6.4

Changes

• Add note of set_free_space_divisor, set_warn_proc ABI change after gc-7.1
• Change compiler invocation example in gc.man to use dynamic libgc
• Delete dont_ar_* build intermediate files on make clean (Makefile.direct)
• Do not declare dl_iterate_phdr as weak for DragonFly
• Fix 'cords' parallel build in Makefile.direct
• Fix 'undeclared identifier USRSTACK' compiler error on OpenBSD-6.2
• Fix error code in abort message if sem_wait failed in start_world (NetBSD)
• Fix GC allocation mutex in child after a fork
• Fix global operator delete definition for C++14 in gc_cpp
• Fix last_reclaimed..gc_no interval comparison to threshold in unmap_old
• Fix libgc version which was changed in linkage breaking way
• Fix missing EOLn output in threadlibs tool
• Fix threadlibs tool to output '-lpthread' for DragonFly
• Prevent DATASTART redefinition for NaCl
• Remove obsolete advice about linking with _DYNAMIC=0 (Linux)

Build status

Travis CI build
AppVeyor CI build
Coveralls status (code coverage)

Distribution Tarball

gc-7.6.4.tar.gz (see the Assets above)

7.4.10

Changes

• Fix error code in abort message if sem_wait failed in start_world (NetBSD)

Also, includes 7.2j changes

Build status

Travis CI build
AppVeyor CI build

Distribution Tarball

gc-7.4.10.tar.gz (see the Assets above)

7.2j

Changes

• Fix GC allocation mutex in child after a fork
• Fix last_reclaimed..gc_no interval comparison to threshold in unmap_old
• Fix libgc version which was changed in linkage breaking way
• Fix missing EOLn output in threadlibs tool

Build status

Travis CI build
AppVeyor CI build

Distribution Tarball

gc-7.2j.tar.gz (see the Assets above; includes a copy of libatomic_ops-7.2i)

7.6.2

Note

This release is not recommended for the downstream package maintainers (because of libgc version-info incompatible change).

Changes

• Add assertion that no hb_n_marks underflow occurs
• Add minimal testing of GC_MALLOC_[ATOMIC_]WORDS and GC_CONS (gctest)
• Add minimal testing of GC_set_bit (gctest)
• Add more cases to huge_test to cover sizes close to word-type maximum
• Add testing of new[]/delete[] (test_cpp)
• Adjust AO_HAVE_x check to match AO_fetch_and_add primitive variant used
• Adjust code indentation of calloc_explicitly_typed
• Align local_mark_stack in help_marker explicitly
• Allow custom TRACE_ENTRIES value
• Allow gctest and thread_leak_test with zero NTHREADS
• Avoid data race in finalized_count (gctest)
• Code refactoring of divide-by-HBLKSIZE occurrences
• Code refactoring of huge_test
• Code refactoring of tests/subthread_create regarding AO add primitive
• Compile thread_local_alloc only if multi-threaded build (Makefile.am)
• Delete preprocessor output on make clean (Makefile.direct)
• Disable implicit multi-threaded mode for Win32 to avoid LOCK crash
• Do not disable parallel mark for WRAP_MARK_SOME
• Do not enable mprotect-based incremental mode if unmapping is on (gctest)
• Do not install documentation if configure --disable-docs (new option)
• Do not use tkill (Android)
• Document base and size of objects allocated by finalized_malloc
• Document configure 'syntax error' issue in README
• Eliminate 'address of local variable returned' static analyzer warning
• Eliminate 'array vs singleton' code defect in typed_test (gctest)
• Eliminate 'assigned value never used' CSA warning in min_bytes_allocd
• Eliminate 'boolean result used in bitwise op' cppcheck false warning
• Eliminate 'C-style pointer casting' cppcheck style warnings in test
• Eliminate 'checking if unsigned variable is <0' cppcheck style warning
• Eliminate 'class member var with name also defined in parent' warning
• Eliminate 'comparison is always false' static analyzer warning in finalize
• Eliminate 'Condition 0==datastart always false' cppcheck warning (dyn_load)
• Eliminate 'condition is always true' cppcheck style warning
• Eliminate 'constructor with 1 argument is not explicit' cppcheck warning
• Eliminate 'CORD_*printf is never used' cppcheck style warnings (cordtest)
• Eliminate 'dereference of null' CSA false warning in array_mark_proc
• Eliminate 'function result not used' code defect in GC_mark_local
• Eliminate 'GC_collecting is set but never used' code defect (Win32)
• Eliminate 'GC_record_fault is never used' cppcheck style warning
• Eliminate 'integer shift by a negative amount' code defect in finalize
• Eliminate 'label not used' cppcheck false warnings in GC_mark_X
• Eliminate 'memory leak' code defect for scratch-allocated memory
• Eliminate 'memory leak' code defect in remove_specific
• Eliminate 'non-null arg compared to null' warning in toggleref_add (GCC)
• Eliminate 'non-reentrant function strtok called' cppcheck warning (POSIX)
• Eliminate 'possible integer underflow' code defect (cord-de)
• Eliminate 'potential overflow' static analyzer warning in test
• Eliminate 'printf format specifies type void*' GCC pedantic warnings
• Eliminate 'scope of variable can be reduced' cppcheck warnings
• Eliminate 'suspicious pointer subtraction' cppcheck warning (gc_cpp)
• Eliminate 'this statement may fall through' GCC warnings
• Eliminate 'unnecessary comparison of static strings' cppcheck warning
• Eliminate 'unsafe vsprintf is deprecated' compiler warning
• Eliminate 'unused formal parameter' compiler warnings in C++ code (MS VC)
• Eliminate 'unused variable' compiler warning in remove_all_threads_but_me
• Eliminate 'use of vulnerable sprintf' code defect in de_win test (cord)
• Eliminate 'value exceeds maximum object size' GCC warning in huge_test
• Eliminate 'value of CLOCK_TYPE unknown' cppcheck info message
• Eliminate 'value of DATASTART2 unknown' cppcheck info messages
• Eliminate 'value of GC_PTHREAD_EXIT_ATTRIBUTE unknown' cppcheck messages
• Eliminate 'value of GC_RETURN_ADDR_PARENT unknown' cppcheck info messages
• Eliminate 'value of NEED_FIXUP_POINTER unknown' cppcheck info messages
• Eliminate 'write to memory that was const-qualified' code analyzer warning
• Eliminate all 'scope of variable can be reduced' cppcheck style warnings
• Eliminate CSA warning about incorrect cast applied to HBLK_OBJS
• Eliminate CSA warning about narrowing cast in CleanUp of test_cpp
• Eliminate CSA warning of non-virtual destructor in test_cpp base class
• Eliminate CSA warning of staticroot that can be a local variable (tests)
• Eliminate CSA warning of unmodified non-const static var (disclaim_test)
• Eliminate redundant local variable in register_finalizer
• Eliminate TSan (Thread Sanitizer) warnings in gctest
• Eliminate UBSan warning of overflow during descr subtraction in mark_from
• Eliminate unreachable PROC/DEFAULT_VDB GC_printf calls in gctest main()
• Eliminate unsigned fl_builder_count underflow in mark_thread
• Enable GC_is_tmp_root for all platforms
• Execute more single-threaded GC tests by CMake
• Expand tabs to spaces in de_win.rc (tests)
• Export GC_dump_finalization/regions()
• Export GC_is_tmp_root() and GC_print_trace[_inner]
• Export GC_print_free_list()
• Fix '32-bit value shift followed by expansion to 64-bit' code defect
• Fix 'GC_written_pages never read' code defect (GWW_VDB)
• Fix 'label cannot be reached' static analyzer warning in disclaim_test
• Fix 'size of tv is unknown' error in brief_async_signal_safe_sleep (musl)
• Fix 'syntax error' reported by cppcheck for mach_dep
• Fix 'unknown type name GC_INNER' compilation error (FreeBSD)
• Fix 'variable assigned a value that is never used' cppcheck style warnings
• Fix 'void pointers in calculations: behavior undefined' cppcheck warning
• Fix assertion violation about disabled cancel in try_to_collect_inner
• Fix atomic_ops build in Makefile.direct for Solaris
• Fix Clang static analyzer warning about not found gc_priv.h in extra files
• Fix compilation error in get_main_stack_base (Emscripten)
• Fix compilation for winpthreads if HANDLE_FORK
• Fix compilation if configured with --enable-werror on OS X
• Fix cord/de build in Makefile.direct (Linux)
• Fix data race in a list referenced by A.aa (gctest)
• Fix data race in collectable_count (gctest)
• Fix data race in do_local_mark when comparing active_count to helper_count
• Fix data race in GC_suspend/resume_thread
• Fix data race in last_stop_count access (suspend_handler_inner)
• Fix data race in make_descriptor when setting explicit_typing_initialized
• Fix data race in mark_thread when updating mark_no
• Fix data race when getting object size in explicitly-typed allocators
• Fix deadlock in GC_suspend_thread
• Fix gctest failure for Darwin if CPPCHECK is defined
• Fix lack of barriers to synchronize memory for suspend_handler
• Fix marking of disclaim-reachable objects in the incremental mode
• Fix message of VDB implementation used if MPROTECT_VDB+GWW_VDB (gctest)
• Fix missing started_thread_while_stopped call from mark_some if GCC/Clang
• Fix null dereference in GC_stack_range_for if not DARWIN_DONT_PARSE_STACK
• Fix page calculation in checksums
• Fix parallel build in Makefile.direct
• Fix test_cpp and c++ parallel build in Makefile.direct
• Fix typo in comment of GC_mark_some
• Fix typos in cdescr.html and README.sgi
• Make GC_INIT optional for clients even if thread-local allocations enabled
• Match uclinux pattern in configure
• Move conditional GC_need_to_lock setting to gc_locks.h (refactoring)
• Move README.QUICK from DOC_FILES to OTHER_FILES in Makefile.direct
• New API function (GC_is_init_called) to check if BDWGC is initialized
• New target (check-cpp) in Makefile.direct
• Prevent abort in register_data_segments for Symbian and Emscripten
• Prevent multiple 'Caught ACCESS_VIOLATION in marker' per collection
• Print realloc_count value in gctest
• Put invariant name in quotes to make mark_state comments clearer
• Refine configure messages when checking for compiler option support
• Remove extraneous semicolons after AC_MSG_WARN (configure)
• Remove page_was_dirty and remove_protection duplicate definitions
• Remove unnecessary type casts of printf arguments to unsigned long
• Remove unused ALIGN_DOUBLE, USE_GENERIC_PUSH_REGS macros (TILE-Gx/Pro)
• Rename 'test' to 'check' target in Makefile.direct
• Replace deprecated rewind to fseek in cordxtra
• Report gcc/clang pedantic warnings (configure)
• Skip thread suspend/resume API testing for Tru64 (OSF1)
• Support AddressSanitizer (Clang/GCC) and MemorySanitizer (Clang)
• Support GC_init (and get_stack_base) from non-main thread on FreeBSD/NetBSD
• Suppress 'tainted string passed to vulnerable operation' false defects
• Suppress 'taking address of label non-standard' GCC/Clang pedantic warning
• Test GC initialization from non-main thread on FreeBSD and NetBSD
• Test GCJ object creation with length-based descriptor (gctest)
• Update comment in finalized_disclaim to match FINALIZER_CLOSURE_FLAG
• Update README regarding make cords with Makefile.direct
• Update README to use autogen.sh on build from the source repository
• Update shared libraries version info to differentiate against v7.4
• Use mprotect instead of mmap in GC_unmap() on Cygwin
• Use same style of include gc.h in documentation
• Workaround '!GC_page_size is always false' cppcheck style warning
• Workaround '#error' cppcheck error messages
• Workaround '32-bit value shift by >31 bits is undefined' cppcheck warnings
• Workaround 'array compared to 0', 'untrusted loop bound' false defects
• Workaround 'bad address arithmetic' static analysis tool false positive
• Workaround 'checking if unsigned value is negative' cppcheck warning
• Workaround 'checking unsigned value is negative' code defect in ...

7.4.8

Note

This release is not recommended for the downstream package maintainers (because of libgc version-info incompatible change).

Changes

• Eliminate 'this statement may fall through' GCC warnings
• Eliminate 'value exceeds maximum object size' GCC warning in huge_test
• Fix data race in make_descriptor when setting explicit_typing_initialized
• Fix marking of disclaim-reachable objects in the incremental mode
• Update comment in finalized_disclaim to match FINALIZER_CLOSURE_FLAG
  Also, includes 7.2i changes

Build status

Travis CI build
AppVeyor CI build

Distribution Tarball

gc-7.4.8.tar.gz (see the Assets above)

7.2i

Note

This release is not recommended for the downstream package maintainers (because of libgc version-info incompatible change).

Changes

• Avoid data race in finalized_count (gctest)
• Fix assertion violation about disabled cancel in try_to_collect_inner
• Fix data race in a list referenced by A.aa (gctest)
• Fix data race in do_local_mark when comparing active_count to helper_count
• Fix data race in GC_init_explicit_typing
• Fix data race in last_stop_count access (suspend_handler_inner)
• Fix data race in mark_thread when updating mark_no
• Fix data race when getting object size in explicitly-typed allocators
• Fix lack of barriers to synchronize memory for suspend_handler
• Fix typos in cdescr.html, extend_size_map and ews4800 doc, README.sgi
• Prevent 'Unexpected heap growth' in single-threaded gctest (Linux/x64)

Build status

Travis CI build
AppVeyor CI build

Distribution Tarball

gc-7.2i.tar.gz (see the Assets above; includes a copy of libatomic_ops-7.2i)

7.4.6

Note

This release is not recommended for the downstream package maintainers (because of libgc version-info incompatible change).

Changes

• Add configure --enable-gcov option (enable code coverage analysis)
• Add configure check whether to define NO_GETCONTEXT
• Adjust GC_memalign comment
• Allow HAVE_DL_ITERATE_PHDR to be defined by client (musl)
• Allow PKG_CHECK_MODULES in configure.ac to be commented out easily
• Avoid busy waiting in mark_thread while GC_parallel is false
• Better document minimum value of size argument for typed allocations
• Change type of THREAD_TABLE_INDEX result to int in win32_threads.c
• Consistently use 'msec' instead of 'ms' in comments in pthread_support
• Do not define amiga_get_mem, MacTemporaryNewPtr unless really used (extra)
• Do not produce .tar.bz2 distribution file (configure)
• Do not require libatomic_ops for single-threaded builds (configure)
• Do not warn of missing PT_GNU_RELRO segment when custom DSO filter used
• Document GWW_VDB in gcdescr.html
• Eliminate 'cast to void* from int' compiler warnings (Darwin/x64)
• Eliminate 'conditional expression is always true' code defect in GC_init
• Eliminate 'FP divide-by-zero' static analyzer warning
• Eliminate 'incompatible function pointer' warning in mark_some (MinGW/x86)
• Eliminate 'ISO C forbids an empty translation unit' GCC pedantic warning
• Eliminate 'ISO C forbids object to function pointer conversion' warning
• Eliminate 'locally defined symbol imported' MS linker warnings (cord)
• Eliminate 'null dereference' code defect warning in register_finalizer
• Eliminate 'possible loss of data' compiler warnings (MS VC)
• Eliminate 'printf format specifier mismatch' compiler warning (tools)
• Eliminate 'type defaults to int in declaration' warning (REDIRECT_MALLOC)
• Eliminate 'value stored is never read' warning of Clang static analyzer
• Eliminate duplicate log messages in GC_mark_from
• Eliminate most of collisions in GC_threads on Linux/x64
• Ensure GC initialized when atfork_prepare is called by client
• Fix 'arg parameter might be clobbered by setjmp' compiler warning
• Fix 'bogus LR' detection in FindTopOfStack (Darwin)
• Fix 'execvp argument incompatible pointer type' compiler warning (tools)
• Fix 'GetVersion deprecated' compiler warning in os_dep (MS VC)
• Fix 'incompatible pointer' compiler warning in GC_init_dyld (OS X 64-bit)
• Fix 'incompatible ptr-to-int conversion' compiler warning in push_all_stack
• Fix 'ISO C90 does not support %lf, %lg gnu_printf formats' GCC warnings
• Fix 'ISO C90 forbids mixed declarations and code' compiler warning
• Fix 'missing libc-version.h' build error (uClibc/x86[_64])
• Fix 'replacement operator delete cannot be inline' GCC warning (Cygwin)
• Fix 'variable unused' compiler warning in FirstDLOpenedLinkMap
• Fix 'zero-size array is extension' Clang warning in os_dep (Linux/x86)
• Fix (adjust) GC_scratch_alloc actual argument type
• Fix deadlock in GC_help_marker caused by use of mark_cv of parent process
• Fix finalize.c compilation in 'strict ANSI' mode
• Fix GC shared library tests failure related to dl_iterate_phdr (musl)
• Fix gc.h compliance to strict ANSI (pthreads)
• Fix GC_bytes_allocd incrementation in case of allocation failure
• Fix GC_jmp_buf multiple definition
• Fix GC_noop6 definition to avoid its calls to be optimized away
• Fix gctest failure if PARALLEL_MARK (musl)
• Fix gctest thread stack overflow (musl-gcc)
• Fix initsecondarythread_test runtime failure if GC compiled w/o threads
• Fix lack of 2 trailing zeros in _MSC_VER numbers
• Fix local variable declarations in disclaim_bench
• Fix missing #error pragma
• Fix missing .exe for disclaim test filenames in Makefile (MinGW)
• Fix missing atomic/[un]collectable/realloc_count increments in gctest
• Fix missing new-line and redundant trailing dot in WARN messages
• Fix missing new-line at format strings end in subthread_create test
• Fix mixed include of GC public header and gc_priv.h in disclaim bench/test
• Fix potential overflow in decrement when computing GC_markers_m1
• Fix printf format specifiers in extra files (cppcheck warnings)
• Fix pthread_start compilation if single-obj-compilation (Linux)
• Fix register_finalizer call in disclaim_bench for GC_DEBUG
• Fix static assertion violation in LONG_MULT for 64-bit targets
• Fix tag collision between ENABLE_DISCLAIM and KEEP_BACK_PTRS
• Fix thread id leaks in subthread_create and threadkey_test
• Fix threaded tests runtime crash if GC_NO_THREAD_REDIRECTS supplied
• Fix tools/setjmp_t to prevent nested_sp inlining
• Fix typo in CHECK_GCLIB_VERSION name (test)
• Fix typos in comments/documentation (ews4800, extend_size_map, push_roots)
• Fix unchecked fork() result in gctest (Unix, Cygwin)
• Improve detection of internal libatomic_ops (configure)
• Move libraries version info to the beginning of Makefile.am
• Prevent abort in register_data_segments for Symbian
• Process all PT_LOAD segments before PT_GNU_RELRO segments (Glibc)
• Refine Makefile.direct comment about multi-threaded GC build
• Refine README about library source downloading
• Refine should_invoke_finalizers documentation
• Remove all generated files by NT_X64_THREADS_MAKEFILE 'clean' target
• Remove non-existent configure option in simple_example.html
• Replace C++ style comments to C ones, remove commented out code (extra)
• Support CFLAGS_EXTRA to pass extra user-defined compiler flags (configure)
• Support CFLAGS_EXTRA when checking for inline and dladdr (configure)
• Suppress 'tainted string passed to vulnerable operation' false defects
• Suppress MS VC warnings about unused param, const condition (NT_MAKEFILE)
• Update bdwgc mailing list online archive link in documentation
• Update shared libraries version info to differentiate against v7.2
• Use AC_DEFINE for defining NO_GETCONTEXT in configure
• Workaround 'index out of bounds' UBSan false warning in push_marked
• Workaround 'mmap() resource handle leak' static analyzer warning
• Workaround 'redundant assignment of *result to itself' cppcheck warning
• Workaround 'resource leak' error reported by cppcheck (tools, test)
  Also, includes 7.2h changes

Build status

Travis CI build
AppVeyor CI build

Distribution Tarball

gc-7.4.6.tar.gz (see below)

7.2h

Note

This release is not recommended for the downstream package maintainers (because of libgc version-info incompatible change).

Changes

• Add gctest as a test (CMake)
• Change no-argument functions declaration style to ANSI C (extra files)
• Do not allow SHORT_DBG_HDRS if KEEP_BACK_PTRS or MAKE_BACK_GRAPH
• Ensure oom_fn callback executed on out-of-memory in calloc
• Fix '~' operator application to unsigned values shorter than word
• Fix 'context local variable might be clobbered by setjmp' compiler warning
• Fix 'doc' files installation folder
• Fix 'shift count >= width of type' compiler warning in GC_SQRT_SIZE_MAX
• Fix ALL_INTERIOR_POINTERS name in comments and documentation
• Fix AO_SRC_DIR target name in NT_*_MAKEFILE
• Fix assertion in GC_mark_from for non-heap regions
• Fix assertion in GC_steal_mark_stack for non-heap regions
• Fix assertion violation in GC_repeat_read if --enable-redirect-malloc
• Fix assertion violation in GC_wait_builder called from start_mark_threads
• Fix assertion violation in mark_local checking GC_mark_stack_top
• Fix bm_huge initialization for 64-bit targets (gctest)
• Fix broken external links in documentation
• Fix bytes count passed to add_to_our_memory in backgraph new_back_edges
• Fix calloc_explicitly_typed in case of lb*n overflow
• Fix CMake warning about CMP0054 by unquoting instances of HOST
• Fix conditional expression in pos_fetch, next non-macro definitions (cord)
• Fix configure --disable-munmap handling
• Fix CORD_substr_closure for the case when CORD_from_fn returns C string
• Fix crash in FirstDLOpenedLinkMap if app linked statically (Alpine Linux)
• Fix double multiplication of lb by n in calloc_explicitly_typed
• Fix enable_parallel_mark condition in CMake script
• Fix external libatomic_ops pkg-config-based detection
• Fix gc_allocator.h file name in new_gc_alloc.h comment
• Fix gc_backptr.h, gc_mark.h, GC_DS_TAGS names in documentation
• Fix gc_cleanup destructor for non-heap objects (gc_cpp)
• Fix GC_collect_or_expand to prevent allocation size value wrap-around
• Fix GC_incremental declaration/definition type mismatch
• Fix GC_mark_stack_top assertion violation properly in mark_local
• Fix GC_requested_heapsize increment in GC_init
• Fix GC_SIZE_MAX definition (Linux/musl-gcc)
• Fix GCJ support in CMake build script
• Fix gctest crash if configure --enable-handle-fork on Darwin
• Fix header filename in gcconfig.h comment
• Fix integer shift undefined behavior in GC_init_explicit_typing
• Fix leak_test crash in print_callers if free() is redirected
• Fix Makefile.direct recursive invocation
• Fix malloc routines to prevent size value wrap-around (fix CVE-2016-9427)
• Fix missing win32_threads.c compilation for Cygwin (CMake)
• Fix MS VC warning about compiling unused checksums and thread_local_alloc
• Fix name typos in GC_FAST_MALLOC_GRANS comment
• Fix null dereference in reclaim_block if DONT_ADD_BYTE_AT_END
• Fix OSF1 host pattern in CMakeLists.txt
• Fix PCR-Makefile by removing compilation of a missing file
• Fix potential data race in GC_SysVGetDataStart (SPARC)
• Fix potential integer overflow in GC_find_limit_* functions
• Fix push_complex_descriptor to avoid unlimited global mark stack growth
• Fix SIGSEGV in GC_is_marked when gc_cleanup is used in leak-finding mode
• Fix Solaris/sparc detection in case of strict C compliance is enforced
• Fix STACKBOTTOM for Solaris 11/x86
• Fix storage class of local variable in register_dynamic_libraries (Irix)
• Fix tools/setjmp_t hang (OS X)
• Fix typed_test to prevent fails in malloc_explicitly_typed (64-bit)
• Fix undefined HEAP_START in register_dynamic_libraries
• Fix various typos in comments, documentation and printed messages
• Handle load_segs overflow in register_dynlib_callback gracefully
• Prevent misleading AC_MSG_ERROR/AS_IF errors reported in configure.ac
• Replace (fix) 'objs' acronym in comments with 'objects' word
• Revert "Skip GC_DS_PER_OBJECT objs with negative descriptor in GC_mark_from"
• Update documentation about bugs reporting and new releases notification
• Update Download information in GC overview document
• Update shared libraries version info (v7.2)
• Workaround a bug in winpthreads causing parallel marks deadlock (MinGW)
• Workaround missing getcontext() in Docker osrf/ubuntu_32bit

Build status

Travis CI build
AppVeyor CI build

Distribution Tarball

gc-7.2h.tar.gz (see below; includes a copy of libatomic_ops-7.2h)

7.6.0

Changes

• ABORT_ARGn log details at INFO level (Android)
• Add 'pragma message' to gc.h to detect inconsistent WIN64/_WIN64 (MS VC)
• Add API function to calculate total memory in use by all GC blocks
• Add API function to set/modify GC log file descriptor (Unix)
• Add alloc_size attribute to GC_generic_malloc
• Add alt-stack registration support
• Add assertion for GC_new_kind boolean arguments
• Add assertion on lock status to GC_alloc_large and its callers
• Add build scripts for VC 9 (Win32/64)
• Add build system plumbing for building with -Werror
• Add incremental GC support for Darwin/arm64
• Add profiling callback events to indicate start/end of reclaim phase
• Add support for enumerating the reachable objects in the heap
• Add toggle-ref support (following Mono GC API)
• Added instructions to README.md for building from git
• Adjust code indentation of malloc/calloc/str[n]dup
• Allow fork() automatic handling on Android with API level 21+
• Allow specific TLS attributes for GC_thread_key
• Allow thread local allocations from within pthread TLS destructors
• Allow to force GC_dump_regularly set on at compilation
• Altera NIOS2 support
• Change 'cord' no-argument functions declaration style to ANSI C
• Check DATASTART is less than DATAEND even assertions off
• Check for execinfo.h by configure
• Code refactoring of GC_push_finalizer/thread/typed_structures
• Code refactoring regarding 'data start' definition for FreeBSD
• Consistently set type of DATASTART/END to ptr_t (code refactoring)
• Consistently use int[] type for '_end' symbol (code refactoring)
• Consistently use outermost parentheses for DATASTART/END, STACKBOTTOM
• Define GC_LINUX_THREADS, NO_EXECUTE_PERMISSION in configure for NaCl
• Define ROUNDUP_PAGESIZE, ROUNDUP_GRANULE_SIZE macros (code refactoring)
• Define public GC_GENERIC_OR_SPECIAL_MALLOC and GC_get_kind_and_size
• Do no declare kernel_id field of GC_Thread_Rep for 64-bit Android
• Do not allow SHORT_DBG_HDRS if KEEP_BACK_PTRS or MAKE_BACK_GRAPH
• Do not warn of missing PT_GNU_RELRO segment when custom DSO filter used
• Document GC_register_my_thread returned value
• Dump the block information in CSV format
• Eliminate redundant *flh check for null in GC_allocobj
• Enable atomic-uncollectable in operator new in gc_cpp.h
• Enable build with musl libc
• Enable gc.h inclusion by client without implicit include windows.h (Win32)
• Enable huge_test for Win64 (and LLP64 target)
• Enable thread-local storage for Android Clang
• Enable thread-local storage usage for GC_malloc/calloc_explicitly_typed
• Export GC_push_all_eager, GC_push_finalizer_structures
• Fix 'arg parameter might be clobbered by setjmp' compiler warning
• Fix assertion in GC_mark_from for non-heap regions
• Fix compilation for Android clang/arm with bfd linker
• Fix integer shift undefined behavior in GC_init_explicit_typing
• Fix missing new-line and redundant trailing dot in WARN messages
• Fix STACKBOTTOM for Solaris 11/x86
• Fix tag collision between ENABLE_DISCLAIM and KEEP_BACK_PTRS
• Fix unchecked fork() result in gctest (Unix, Cygwin)
• Fix user-defined signals drop by marker threads
• Fix various typos in comments and documentation
• FreeBSD/arm support improvement
• GC_make_descriptor code refactoring (eliminate two local variables)
• GC_malloc[_atomic] global and thread-local generalization with kind
• GC_malloc_[atomic_]uncollectable generalization
• GC_scratch_alloc code refactoring (and WARN message improvement)
• Group all compact fields of GC_arrays to fit in single page
• Handle load_segs overflow in register_dynlib_callback gracefully
• Harmonize OSX/iOS configuration; enable compiling for iPhone simulator
• Implement event callbacks for profiling (following Mono GC API)
• Implement the finalization extension API
• Implement thread suspend/resume API (Linux threads only)
• Improve documentation for disappearing links in gc.h
• Make heap growth more conservative after GC_gcollect_and_unmap call
• Mark fo_head, finalize_now with a single GC_push_all call (refactoring)
• Move MessageBox invocation code from GC_abort to a separate routine (Win32)
• NaCl/arm initial support; NaCl runtime fixes for other CPUs
• New macro (GC_ALWAYS_MULTITHREADED) to set multi-threaded mode implicitly
• New macro (NO_WINMAIN_ENTRY) to prefer main() instead of WinMain in test
• New macro (REDIRECT_MALLOC_IN_HEADER) to enable source-level redirection
• Process all PT_LOAD segments before PT_GNU_RELRO segments (Glibc)
• Re-implement GC_finalized_malloc using GC_malloc_kind
• Refactoring of android_thread_kill/pthread_kill calls
• Refactoring of GC_Xobjfreelist (use single array to keep free lists)
• Refactoring of thread-local *_freelists (use single array of free lists)
• Refine description in README how to build from source repository
• Refine GC_free_space_divisor comment regarding its initial value
• Reformat code of gc_cpp.cc/h
• Remove 'opp' local variable in GC_malloc_X
• Remove 'sig' argument of GC_suspend_handler_inner (code refactoring)
• Remove code commented out by 'ifdef UNDEFINED'
• Remove hb_large_block field (use 1 extra bit of hb_flags instead)
• Remove obsolete BACKING_STORE_ALIGNMENT/DISPLACEMENT macros for Linux/IA64
• Remove redundant casts in GC_generic_or_special_malloc and similar
• Remove unsupported FreeBSD/ia64 case from gcconfig.h file
• Remove unused GC_gcjdebugobjfreelist
• Rename ATOMIC_UNCOLLECTABLE to GC_ATOMIC_UNCOLLECTABLE
• Replace non-API occurrences of GC_word to word (code refactoring)
• Return GC_UNIMPLEMENTED instead of abort in GC_get_stack_base (OS/2)
• Show WoW64 warning message if running 32-bit on Win64 (enabled by macro)
• Standalone profiling callback for threads suspend/resume
• Support (add machine description for) TILE-Gx and TILEPro targets
• Support build for Android 64-bit (arm64, mips64, x86_64)
• Support FreeBSD/aarch64, FreeBSD/mips
• Support iOS7 64-bit (AArch64) and iOS8+ 32/64-bit (Darwin)
• Support MinGW build in scripts
• Turn off sigsetjmp workaround for Android/x86 starting from NDK r8e
• Use magic header on objects to improve disclaim_test
• Workaround 'sa_sigaction member missing' compiler error (Android/x32)
• Workaround 'unresolved __tls_get_addr' error for Android NDK Clang
• Workaround a bug in winpthreads causing parallel marks deadlock (MinGW)
  Also, includes 7.4.4 changes

Distribution Tarball

gc-7.6.0.tar.gz

Backup of BDWGC mailing lists

This is not related to this release actually, just a convenient place to keep the archives of the BDWGC announcements and technical discussions (Dec 2002 - Apr 2017):

• bdwgc-announce@lists.opendylan.org: bdwgc-announce-mailing-list-archive-2014_02.tar.gz
• bdwgc@lists.opendylan.org: bdwgc-mailing-list-archive-2017_04.tar.gz

7.4.4

Changes

• Allow GC_FAST_MALLOC_GRANS() multiple use in a function
• Also enable the TSX workaround for i386 (Linux)
• Avoid unstructured procfs on Solaris
• Change cord/de main() declaration style from K-R to ANSI C
• Change no-argument functions declaration style to ANSI C (cord)
• Do not include sigcontext.h and asm/sigcontext.h
• Eliminate 'divide by zero' compiler warning in cordtest
• Eliminate warning about 64-bit pointer-to-int cast (Win64/pthreads-w32)
• Eliminate warnings detected by Cppcheck in cord de[_win]
• Fix 'comparison of non-null parameter is always false' warning (Clang)
• Fix 'CORD_iter5 unused result' code defect in cordxtra
• Fix 'GC_generic_malloc_inner_ignore_off_page not used' compiler warning
• Fix 'implicit declaration of vsnprintf' GCC warning (if strict ANSI mode)
• Fix 'signed-to-bigger-unsigned value assignment' in GC_init_size_map
• Fix 'signed-to-bigger-unsigned value assignment' warning for hb_map
• Fix 'signed-to-bigger-unsigned value assignment' warning in GC_setpagesize
• Fix 'statement unreachable' compiler warning in GC_mark_from
• Fix 'statement unreachable' compiler warning in memalign
• Fix 'unused label' compiler warning in cord/de
• Fix 'value truncated' compiler warning in CORD_cat (MS VC)
• Fix 'variable unused' warning in GC_save_callers
• Fix 'visibility attribute not supported' GCC warning (IBM AIX)
• Fix CMake warning about CMP0054 by unquoting instances of HOST
• Fix Cygwin64 build
• Fix GC_REALLOC to call GC_FREE if new size is zero and pointer is non-NULL
• Fix Makefile.direct for Cygwin
• Fix alloc_size availability detection (Clang)
• Fix abort message in GC_move_long_link
• Fix and code refactoring of lock elision workaround (Linux/x64)
• Fix assertion on mark_lock_holder for non-unique NUMERIC_THREAD_ID
• Fix data race in GC_init_explicit_typing
• Fix gc.mak regarding msvc_dbg and test (MSVC)
• Fix missing error handling of pthread_attr_init/getstacksize
• Fix missing error handling of pthreads_mutex_init and cond_wait
• Fix missing numeric casts in cord
• Fix potential left shift overflows in finalize.c (64-bit targets)
• Fix pthreads-win32 name in comments and documentation
• Fix setup_mark_lock missing prototype
• Fix unchecked fcntl() result
• Fix unchecked pointer dereference in check_ints (gctest)
• Fix unchecked pthread_join() result in threadkey_test
• Fix unchecked sigdelset() result in pthread_support
• Fix undefined PTRFREE/NORMAL in gc_inline.h
• Prefix PREFETCH_FOR_WRITE with GC_ as used in gc_inline.h public header
• Relax mark_mutex attribute needed to disable elision (Linux/x64)
• Remove (deprecate) TODO file
• Remove code duplication in GC_realloc
• Remove duplicate new-line in OUT_OF_MEMORY message (cord)
• Remove references to missing linux_threads.c from documentation
• Revert "Move asm machine-dependent files to 'src' folder" (partly)
• Support Android API level 21
• Update compiler options in gc.mak (Win32)
• Use mmap instead of sbrk (Hurd)
• Workaround 'comparison is always false' GCC warning in GC_FAST_MALLOC_GRANS
• Workaround 'identical expr on both sides of bitwise op' warning
• Workaround Linux NTPL lock elision bug
• Workaround false warning about unreachable code path
• Workaround invalid '_end' symbol on Android clang 3.5+
  Also, includes 7.2g changes

Distribution Tarball

gc-7.4.4.tar.gz