Merge

diff --cc Misc/NEWS
index 409b1e6c96fc45c27d6a152bc7b64f9a4d1d54a8,185e14d55a005cdb84dcd921f60acf236d989a7d..199fd8f36ac2bebecc32e553a51be2073420676a
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -253,9 -178,8 +253,11 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #16743: Fix mmap overflow check on 32 bit Windows.
+ 
 +- Issue #16996: webbrowser module now uses shutil.which() to find a
 +  web-browser on the executable search path.
 +
  - Issue #16800: tempfile.gettempdir() no longer left temporary files when
    the disk is full.  Original patch by Amir Szekely.