[Bug other/95971] [10 regression] Optimizer converts a false boolean value into a true boolean value

[0xe2.0x9a.0x9b at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95971

--- Comment #3 from Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b at gmail 
dot com> ---
Created attachment 48806
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48806&action=edit
Makefile