https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89136
--- Comment #7 from David Binderman <dcb314 at hotmail dot com> --- (In reply to Tom de Vries from comment #5) > Thanks for finding and reporting this. You are welcome. I was testing new clang-8.0.0-rc1 and hadn't compiled gcc with clang for a while. clang warns for "=+" and it isn't a new warning in clang-8.0.0-rc1.