[Bug c++/79746] [7 Regression] Confusing -Wunused-but-set-parameter warning with virtual inheritance

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79746

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 40847
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40847&action=edit
gcc7-pr79746.patch

Untested fix.