🚀 go-pugleaf

My trouble is I do like this:
	err	=	OpenDriver ("\p.x10", &driverRefNum);
in THINK C, and err (of type OSErr) comes back 2.

I'm using System 6.0.2 and THINK C 3.02 on an Mac SE.

It should be 0 (== noErr) or perhaps -21, -26, -23, or -22 (badUnitErr,
dInstErr, openErr, or unitEmptyErr) according to Inside Mac II-178.
It should at least be negative (except for 0, +1, or +128) according
to Inside Mac III-205.

When I ignore this anomaly, and go on, everything seems to be working
fine.  Specifically, driverRefNum contains the right value.  Control
calls to the driver are handled properly (and return noErr).  CloseDriver
also returns noErr.

When I change "\p.x10" (a existing resource name) to "\p.xxx" (a resource
that does not exist), OpenDriver returns -43 (fnfErr, file not found).  I
think that it should return -26 (dInstErr, couldn't find driver in resource
file).

Is this a bug everyone knows about, or am I alone?  What can I do?