[Bug c++/89160] -Wattributes too eager on C++11 attributes

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89160

--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
Thanks, yes, that's an exact duplicate that I failed to find despite several
searches in bugzilla :-(