[M3devel] Style question about error messages

[Tony Hosking]

You can just record that exception as fatal in that code block with the <*FATAL Thread.Alerted*> pragma.

On 23 Feb 2010, at 13:19, hendrik at topoi.pooq.com wrote:

> 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