Incoherent invocation type inference?

Maurizio Cimadamore maurizio.cimadamore at
Thu Jan 19 17:09:55 UTC 2017

On 19/01/17 13:44, B. Blaser wrote:
> ... we get a NullPointerException. We could imagine another
> implementation that would invoke "Object[] toArray()" if "a==null". In
> that case we would get a ClassCastException. In all cases, this piece
> of code will fail at runtime with any exception. Then, javac could
> probably emit also a warning in this situation by updating the rule as
> follows:
I don't think I agree with your analysis.

Yes, an impl could delegate to toArray() but then will have to cast from 
Object[] to T[], which is an unchecked cast - so a CCE would be well 
deserved there.


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