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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/55371] [asan] False -Werror=uninitialized
Date: Mon, 12 Apr 2021 20:06:41 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D55371

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|sanitizer                   |bootstrap
                 CC|                            |msebor at gcc dot gnu.org
         Resolution|---                         |WONTFIX
             Status|NEW                         |RESOLVED

--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
In a recent build of GCC 11 I count 69 instances of -Wmaybe-uninitialized
without sanitization but not one looking like the one in comment #0.  I don=
't
have a sanitized build handy but the instrumentation injected by the saniti=
zers
is known to induce false positives, so (I think) GCC builds with
-Wno-error=3Dmaybe-uniitialized when sanitization is enabled.  There are a =
lot of
bugs against the warning with small test cases and odds are that one of them
captures the essence of this ancient bug if it is, in fact, a bug and if it
hasn't disappeared by now.  Since there's been no activity on this bug in
almost a decade I'm going to resolve this report as WONTFIX.  If it's still
reproducible please reopen and attach a standalone test case to make it eas=
y to
reproduce.=