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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107138] [12/13 regression] std::variant<std::string, ...>
 triggers false-positive 'may be used uninitialized' warning
Date: Tue, 29 Nov 2022 17:21:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107138

--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Marco Clemencic from comment #8)
> But the warning is not issued in -O0 builds, which I believe means the co=
de
> is correct by itself,

That's not a valid assumption. -Wmaybe-uninitialized doesn't even run for -=
O0
so you won't get those warnings even for incorrect code. So you can't infer
anything from the absence of such warnings with -O0.=