[Bug c/28901] -Wunused-variable ignores unused const initialised variables

[mark at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28901

--- Comment #8 from Mark Wielaard <mark at gcc dot gnu.org> ---
Submitted a patch:
https://gcc.gnu.org/ml/gcc-patches/2015-09/msg00847.html