JDK 9 RFR: JDK-8177146 MethodHandles.Lookup::bind allows illegal protected access

[Paul Sandoz]

> On 26 Apr 2017, at 09:50, Ron Pressler <ron.pressler at oracle.com> wrote:
> 
> Hi.
> Please review,
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8177146
> Webrev: http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8177146-bind-protected-method/webrev/
> 

+1

Paul.

> -----
> 
> The patch contains a few changes:
> 
> 1. The method `getDirectMethodCommon`, was changed so that if narrowing due to protected method access must be done, it will be done regardless of the flag doRestrict.
> 
> 2. The private method ` getDirectMethodNoRestrict` was renamed to ` getDirectMethodNoRestrictInvokeSpecial`.
> 
> 3. The method `bind` was changed to throw the correct exception type, IAException.
> 
> 4. `restrictReceiver` was changed such that it never widens the receiver type. This could happen when the receiver was a subclass of the caller class, and triggered the assertion (this happened not only in calls to `bind` but also to `findVirtual`).
> 
> -----
> 
> Thanks
> Ron
> 
>