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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/103629] Possible miscompilation triggered by
 -fvisibility=hidden
Date: Thu, 09 Dec 2021 13:45:50 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103629

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Mathieu Malaterre from comment #3)
> $ export CXXFLAGS=3D-fvisibility=3Dhidden

Yes you can't just use -fvisibility=3Dhidden without the source being ready=
 for
it.=