[Bug c++/123277] [16 Regression] [[maybe_unused]] does not silence Wunused-local-typedefs for dependent typedefs

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123277

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2025-12-23
            Summary|[16 Regression]             |[16 Regression]
                   |[[maybe_unused]] does not   |[[maybe_unused]] does not
                   |silence                     |silence
                   |Wunused-local-typedefs      |Wunused-local-typedefs for
                   |                            |dependent typedefs
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. A C++98 testcase:
```
template<typename T>
void A2(T B)
{
  typedef T C [[maybe_unused]] ;
}
```