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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c/95057] missing -Wunused-but-set-variable warning on multiple assignments, not all of them used Date: Mon, 11 May 2020 13:09:46 +0000 [thread overview] Message-ID: <bug-95057-4-WCAVJgjCi2@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-95057-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95057 --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- It can't. The warning isn't flow sensitive, doesn't know about assignments, conditionals etc. What you are thinking of is something that can be only done much later, but at that point one risks that there is compiler-introduced dead code that wasn't really the fault of the user.
next prev parent reply other threads:[~2020-05-11 13:09 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-05-11 12:50 [Bug c/95057] New: " vincent-gcc at vinc17 dot net 2020-05-11 12:53 ` [Bug c/95057] " jakub at gcc dot gnu.org 2020-05-11 13:05 ` vincent-gcc at vinc17 dot net 2020-05-11 13:09 ` jakub at gcc dot gnu.org [this message] 2020-05-11 13:39 ` vincent-gcc at vinc17 dot net 2023-07-18 22:34 ` vincent-gcc at vinc17 dot net 2023-07-18 22:46 ` vincent-gcc at vinc17 dot net
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