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 mark_from
• Workaround 'comparison of identical expressions' false code defects
• Workaround 'Condition 0!=GETENV() is always false' cppcheck style warnings
• Workaround 'condition is always false' cppcheck warning in get_next_stack
• Workaround 'condition is always true' cppcheck style warnings in GC_init
• Workaround 'function is never used' cppcheck style warnings
• Workaround 'insecure libc pseudo-random number generator used' code defect
• Workaround 'int shift by negative amount' false code defect in finalize
• Workaround 'local variable size too big' static analyzer warning
• Workaround 'memory leak: result' cppcheck false error (POSIX)
• Workaround 'null pointer dereference' false positive in push_next_marked
• Workaround 'obsolescent bcopy, bzero called' cppcheck warnings (POSIX)
• Workaround 'obsolescent usleep called' cppcheck warning (POSIX)
• Workaround 'obsolete function alloca() called' cppcheck warnings
• Workaround 'passing untyped NULL to variadic function' cppcheck warning
• Workaround 'pointer used before comparison to null' code defect (pthread)
• Workaround 'possible null pointer dereference' cppcheck warnings
• Workaround 'potential multiplication overflow' code defect in de_win (cord)
• Workaround 'redundant assignment of *result to itself' cppcheck warning
• Workaround 'resource leak' false positives in alloc_MS, bl/envfile_init
• Workaround 'same expression on both sides of ==' cppcheck style warning
• Workaround 'same expression on both sides of OR' cppcheck style warning
• Workaround 'struct member is never used' cppcheck style warnings
• Workaround 'tainted int used as loop bound' static analysis tool warning
• Workaround 'Uninitialized variable' cppcheck errors
• Workaround 'unused variable' cppcheck style warnings
• Workaround 'va_list used before va_start' cppcheck error in cord
• Workaround 'value of macro unknown' cppcheck info messages
• Workaround 'value of REDIRECT_MALLOC/FREE unknown' cppcheck info messages
• Workaround 'value of SIGBUS unknown' cppcheck info messages
• Workaround 'value of WINAPI unknown' cppcheck info messages
• Workaround 'variable hides enumerator with same name' cppcheck warnings
• Workaround 'variable reassigned before old value used' cppcheck warnings
• Workaround 'waiting while holding lock' code defect in stop_world (Unix)
• Workaround false 'uninitialized var use' code defect (initsecondarythread)
  Also, includes 7.4.6 changes

Build status

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

Distribution Tarball

gc-7.6.2.tar.gz (see the Assets above)