[Bug c++/58362] Wrong column number for unused parameter

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58362

--- Comment #10 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Nope, sorry, the C front-end is already fine, thus I guess we really want to
change location_of in the C++ front-end.