RFR 8223582 [lworld] WeakReference of an inline type should throw

[Mandy Chung]

Hi Roger,

Throwing IAE is fine for LW2 to catch uses of a Reference object on an 
inline value and will explore this topic in the future milestone.

thanks
Mandy

On 5/24/19 3:52 AM, Roger Riggs wrote:
> Please review this change (for LW2) to disallow inline values from 
> being referenced by
> FinalReference, WeakReference, SoftReference, and PhantomReferences.
> Since by definition there cannot be another reference to the value, 
> the Reference would be cleared.
> Throwing an exception on construction of the ref will prevent an 
> accident dependency
> on otherwise undefined behavior.
> There are further notes in the issue.
>
> Issue:
>   https://bugs.openjdk.java.net/browse/JDK-8223582
>
> Webrev:
> http://cr.openjdk.java.net/~rriggs/webrev-weakinline-8223582-2/index.html
>
> Thanks, Roger
>
>