RFR: JDK8U Backport of 8186171: HashMap: Entry.setValue may not work after Iterator.remove() called for previous entries

[Martin Buchholz]

On Wed, Jun 6, 2018 at 11:01 AM, Martin Buchholz <martinrb at google.com>
wrote:

> Alright, I leave it to you.  Your current change is fine.
>

Except, add that trailing newline to the test!