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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 [thread overview]
Message-ID: <bug-95971-4-x2PhdT0yXm@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-95971-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95971
--- Comment #12 from Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b at gmail dot com> ---
(In reply to Marc Glisse from comment #11)
> while(!a.isZero());
>
> 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 the
posted code isn't the real code.
prev parent reply other threads:[~2020-06-29 21:43 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-29 16:19 [Bug other/95971] New: " 0xe2.0x9a.0x9b at gmail dot com
2020-06-29 16:20 ` [Bug other/95971] " 0xe2.0x9a.0x9b at gmail dot com
2020-06-29 16:20 ` 0xe2.0x9a.0x9b at gmail dot com
2020-06-29 16:20 ` 0xe2.0x9a.0x9b at gmail dot com
2020-06-29 17:43 ` marxin at gcc dot gnu.org
2020-06-29 18:05 ` 0xe2.0x9a.0x9b at gmail dot com
2020-06-29 18:27 ` marxin at gcc dot gnu.org
2020-06-29 18:44 ` 0xe2.0x9a.0x9b at gmail dot com
2020-06-29 18:50 ` marxin at gcc dot gnu.org
2020-06-29 19:15 ` 0xe2.0x9a.0x9b at gmail dot com
2020-06-29 20:50 ` 0xe2.0x9a.0x9b at gmail dot com
2020-06-29 21:30 ` glisse at gcc dot gnu.org
2020-06-29 21:43 ` 0xe2.0x9a.0x9b at gmail dot com [this message]
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