Should masked exceptions be an error?

[Brad Roberts]

On Mon, 23 Nov 2009, Andrei Alexandrescu wrote:

> Consider:
> 
> try {
>    ...
> } catch (Exception) {
>    ...
> } catch (StdioException) {
>    ...
> }
> 
> The second handler never matches because StdioException is a subclass of
> Exception, so the first handler will always match whatever the second matches.
> 
> Should that be a compile-time error? I think so.
> 
> 
> Andrei

Alternate thought.. should order matter or should it automatically sort 
such that most specific catch is preferred.  Sort of matches the 
declaration order doesn't (ok, shouldn't) matter philosophy.