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From: "0xe2.0x9a.0x9b at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/95971] [10 regression] Optimizer converts a false boolean
 value into a true boolean value
Date: Mon, 29 Jun 2020 21:43:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95971

--- Comment #12 from Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b at g=
mail dot com> ---
(In reply to Marc Glisse from comment #11)
> 	while(!a.isZero());
>=20
> that doesn't look like something you would find in real code. Are you
> waiting for a different thread to modify a? Then you should use an atomic
> operation. Are you waiting for the hardware to change something? Use
> volatile. Do you really want an infinite loop? Spell it out
> if(!a.isZero())for(;;);

The code I sent is a downsized version of a larger code, which means that t=
he
posted code isn't the real code.=