== [7.4.20] (not released yet) ==
+* Do not hold GC_fault_handler_lock when in Sleep (Windows)
+* Eliminate 'static GC_sysinfo definition has incomplete type' Clang warning
* Eliminate 'unused function GC_add_map_entry' compiler warning
* Eliminate 'while clause does not guard' GCC warning in GC_parse_map_entry
* Fix OS_TYPE and USE_MMAP_ANON definitions for Cygwin/x64
* Fix configure message about 'AIX gcc optimization fix'
* Fix cordtest build in SMakefile.amiga
+* Prevent GetThreadContext failure (Windows)
+* Refactoring of WoW64 workaround (Win32)
Also, includes 7.2o changes
== [7.2o] (not released yet) ==
+* Disable mprotect-based incremental GC if /proc roots are used (Linux)
* Explicitly zero-initialize trace_buf (fix trace_buf initialization)
+* Fix 'ACCESS_VIOLATION in marker' GC warning on Win32 async thread start
* Fix 'expected function body after declarator' clang error in gc_cpp.cc
* Fix configure message about 'AIX gcc optimization fix'
* Fix first_thread stack_base initialization if custom GC_stackbottom (Win32)
* Fix save_callers for multi-threaded case if built-in backtrace unavailable
* Fix various typos mostly in documentation files
* Fix word size, data start and alignment for OpenBSD/mips64(el)
+* Prevent WARN of incompatible incremental GC if default or manual VDB
+* Reduce a time period between GetExitCodeThread and SuspendThread (Win32)
* Remove a misleading comment about Solaris in gc.h