https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122062
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- Specifically, vector<double>::iterator. If it was vector<adl::trap>::iterator it would need the fix. It doesn't hurt to make __normalize immune from evil commas. It's a good habit to do it anywhere a for loop increments more than one iterator.
