[Bug c++/68669] [5 regression] -Wunused-variable in anonymous namespace is not correctly supressed by #pragmas

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68669

--- Comment #8 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #7)
> (In reply to Manuel López-Ibáñez from comment #6)
> > Perhaps you need to try with -Wunused-const-variable ? There may be some
> > problem with TREE_READONLY (decl).
> 
> There is no -Wunused-const-variable in gcc-5.

I mean to trigger the bug (or check the correct behavior) with gcc 6.