https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57195
--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> --- Hello Michael, Patches should be sent to gcc-patches@. If you do, either make in_angle_bracket a bool, or actually count the nesting level; and you probably want to handle the case where there are more closing than opening brackets. And one of your lines is much too long ;-)