https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64079
--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> --- Thanks Jason. Note that '+' eventually boils down to location_of, which does quite a bit more than DECL_SOURCE_LOCATION. Thus either we should be very, very careful in this work or in some cases use location_of to be safe, at least ad interim.