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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/83468] -Wuninitialized false negative (reference, VOPs at
 O0, Wsystem-headers)
Date: Fri, 02 Apr 2021 20:56:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D83468

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |msebor at gcc dot gnu.org
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED
      Known to work|                            |11.0

--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
For the very first test case GCC 11 warns at -O0 and -O1 but not at -O2.  F=
or
the second test case in comment #0 and for the one in comment #4 it warns at
all three levels.  The warning otherwise missing at -O2 in first test case
reappears once the call to test3() is commented out, as one would expect.=20
Given all the outstanding problems with the warning I consider this resolve=
d.=