https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78861
--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #4) > No, that will convert the stream to a bool then try to bitshift it. > > It should be: > > result = bool( iss >> t.duration >> t.width ); Yeah, sorry.