drg (10/28/82)
The undocumented rin() routine in /lib/libc.a calls the non-existent routine isdigit(), generating a very confusing loader message. Rin() (read integer) is left over from v6. It is obviously not used by anyone, or they would have fixed this bug. I recommend removing it from the library, and forcing people to use scanf() instead. -- Dave Galloway, CSRG, University of Toronto