[M3devel] Style question about error messages

[hendrik at topoi.pooq.com]

Somewhere in my program after it has trued and failed to read the 
input file, I have the code

Wr.PutText(Stdio.stderr, "No input file.\n");

Now presumably this message could be more detailed, but that's not waht 
I'm asking.  What happens to me when I compile this code is the warning:

"../src/Main.m3", line 63: warning: potentially unhandled exceptions: 
Thread.Alerted, Wr.Failure

Now presumably this is an indication that I ought to wrap the whole 
thing in a TRY clause.  But what am I supposed to do if the attempt to 
produce an error message fails?  Write an error message?

What have other people done in this situation?

--hendrik