Ooops --- forgot a size_t --> ptrdiff_t edit.
Ooops --- forgot a size_t --> ptrdiff_t edit.

sheim/drake,sheim/drake,billhoffman/drake,sheim/drake,sheim/drake,billhoffman/drake,billhoffman/drake,billhoffman/drake,sheim/drake,sheim/drake,billhoffman/drake,sheim/drake,sheim/drake,billhoffman/drake,billhoffman/drake,billhoffman/drake