Issue 249: NPE in  
com.google.inject.ProviderToInternalFactoryAdapter$1.call()
http://code.google.com/p/google-guice/issues/detail?id=249

Comment #2 by gili.tzabari:
Turns out this is caused by fact that Key.get() was not bound to()  
anything. If you
remove in(Scopes.SINGLETON) Guice will notice this and issue an error:

com.google.inject.ConfigurationException: Missing binding to
PermanentRedirect annotated with
@com.google.inject.name.Named(value=RedirectMain).

It seems that Scopes.SINGLETON does not expect or check for this kind of  
error so it
dies with a cryptic NPE instead.

Please add this error checking into Scopes.SINGLETON.



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