phil@sequel.UUCP (11/05/83)
Bug in /usr/src/etc/getty/subr.c:
routine setchars():
[lines]
108 for (i = 0; charnames[i]; i++) {
109 p = *charnames[i];
110 if (p && *p)
111 *charvars[i] = *p;
112 else
113 *charvars[i] = '\0377'; <- ** constant wrong **
114 }
Constant '\0377' should be '\377'. VAX compiler actually generates:
cvtwb $7991,(r0)
which ends up being decimal 55 (the digit '7'). The constant is declared
incorrectly. K&R states an octal constant is a '\' followed by 1, 2, or
3 digits (not 4). Anybody got any guesses how it got 7991 anyway?
The intent was to set disable a value by setting it to (char)-1 as
tty(4) documents but instead sets it to a funny value.
** Why is not (char) -1 used instead of '\377' anyway? **
--
Phil Hochstetler (503) 627-9811
Sequent Computer Systems
...!sequel!phil (on November 1, sequel becomes sequent)