Your bug report

#42660: emacs-27.1-rc1 and UBsan findings

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 42660@debbugs.gnu.org.

-- 
42660: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=42660
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems