"_doprnt" query

[Doug Gwyn <gwyn>]

> I am trying to get a screen editor working on my Fortune 32:16 system.  It
> keeps crashing in the routine "_doprnt" (giving me a memory addressing error).
> I can't seem to find any documentation on it.

_doprnt() is used internally by the printf() family of functions.
One common cause of crashes in it is passing a bum pointer for a
%s format spec, or not having the correct number of arguments.