RFR: 8191637: Interface with defaults invalid compiler warning for Serializable

[Jonathan Gibbons]

Updated webrev, based on feedback from serialization folk.

Interfaces need never have a serialVersionIUID.
All serializable classes (i.e. either concrete or abstract) are 
candidates to be checked for the presence of a serialVersionUID

Webrev: http://cr.openjdk.java.net/~jjg/8191637/webrev.01/

-- Jon

On 01/04/2018 04:54 PM, Jonathan Gibbons wrote:
> Please review this fix for JDK-8191637, which modifies an earlier fix 
> for JDK-6356530.
>
> Prior to the fix for JDK-6356530, all abstract classes (including 
> interfaces) were excluded from the check for serialVersionUID. The fix 
> for JDK-6356530 modified the check, but focussed on concrete methods 
> (including default methods for interfaces) instead of serializable 
> fields.
>
> This fix updates the check so that interfaces are never checked, and 
> abstract classes are only checked if they have serializable 
> (non-static, non-transient) fields.
>
> JBS 1: https://bugs.openjdk.java.net/browse/JDK-8191637
> JBS 2: https://bugs.openjdk.java.net/browse/JDK-6356530
> Webrev: http://cr.openjdk.java.net/~jjg/8191637/webrev.00/
>
> -- Jon