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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/66934] Compiler accepting ill-formed program with extern
 variable declarations and using-declaration
Date: Fri, 03 Dec 2021 00:45:23 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D66934

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D66878,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D66888,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D66889,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D66901,
                   |                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=3D66935

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Anders Granlund from comment #0)
> The following program is ill-formed since the two declarations in main are
> conflicting.

This was fixed in GCC 8+.=