[Bug c++/84221] [6/7/8 Regression] spurious -Wmaybe-uninitialized warning on a variable of a template type declared unused

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84221

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
      Known to work|                            |4.7.4
            Summary|spurious                    |[6/7/8 Regression] spurious
                   |-Wmaybe-uninitialized       |-Wmaybe-uninitialized
                   |warning on a variable of a  |warning on a variable of a
                   |template type declared      |template type declared
                   |unused                      |unused
      Known to fail|                            |4.8.4, 4.9.4, 5.5.0, 6.4.0,
                   |                            |7.2.0, 8.0

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Bisection points to r191830 (gcc 4.8.0) as the change that introduced the false
positive:

r191830 | dodji | 2012-09-28 09:32:41 -0400 (Fri, 28 Sep 2012) | 23 lines

PR c++/54372 - unused attribute inactive on dependant entities