Should masked exceptions be an error?

[Andrei Alexandrescu]

Nick Sabalausky wrote:
> "Brad Roberts" <braddr at bellevue.puremagic.com> wrote in message 
> news:alpine.DEB.2.00.0911241319190.18188 at bellevue.puremagic.com...
>> 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.
> 
> Use first match:
> + Consistent with "else if"

+ needs no work

:o)

Andrei