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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/110052] useless local variable not optimized away
Date: Wed, 31 May 2023 08:31:32 +0000 [thread overview]
Message-ID: <bug-110052-4-rSDH0nw9Pz@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-110052-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110052
Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |amonakov at gcc dot gnu.org
--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
That would be an invalid transform because 'myrealloc' might check its third
argument ('size') for equality against some other pointer (e.g. in some global
variable, or even the first argument) and change behavior based on the outcome.
next prev parent reply other threads:[~2023-05-31 8:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-31 8:06 [Bug middle-end/110052] New: " aldot at gcc dot gnu.org
2023-05-31 8:31 ` amonakov at gcc dot gnu.org [this message]
2023-05-31 8:51 ` [Bug middle-end/110052] " rguenth at gcc dot gnu.org
2023-05-31 18:12 ` aldot at gcc dot gnu.org
2023-05-31 18:24 ` aldot at gcc dot gnu.org
2023-06-01 12:48 ` amonakov at gcc dot gnu.org
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