[Bug c/108079] [10/11/12/13 Regression] -Wunused-variable gives misleading duplicate warning for unused static local variable

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108079

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems to have started with r6-1401-gd7438551ff5ffa0afeca2aa3efd13035b26bee34
One of the warnings is diagnosed by the FE (from pop_scope/poplevel),
the other by cgraphunit (check_global_declaration).