boehm-gc: update to 8.2.2.

== [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)


(wiz)