__slot1 30 maint/gnulib/lib/alignof.h template <class type> struct alignof_helper { char __slot1; type __slot2; }; __slot1 33 maint/gnulib/lib/alignof.h # define alignof_slot(type) offsetof (struct { char __slot1; type __slot2; }, __slot2) __slot1 98 maint/gnulib/lib/malloca.h template <class type> struct sa_alignof_helper { char __slot1; type __slot2; }; __slot1 109 maint/gnulib/lib/malloca.h # define sa_alignof(type) offsetof (struct { char __slot1; type __slot2; }, __slot2)