[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 #10 from Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b at gmail 
dot com> ---
I hope you do realize that the code I posted previously is equivalent, or very
close to being equivalent, to the following code:

  struct President {
    const bool dead = false;
    bool isDead() { return dead; }
  } president;

  while(!president.isDead());
  if(president.isDead()) {
    launch_retaliation_nukes();
  }

With -ffinite-loops enabled, the nukes are going to be launched because the
only way that the while-loop can terminate is for President::dead to be true
and thus the "const bool dead" can be assumed to be true when execution reaches
the if-statement after skipping the deleted infinite while loop.