RFR: 8253763: ParallelObjectIterator should have virtual destructor

[Aleksey Shipilev]

On Tue, 29 Sep 2020 07:06:31 GMT, Per Liden <pliden at openjdk.org> wrote:

> The ParallelObjectIterator should have virtual destructor, since implementations of
> CollectedHeap::parallel_object_iterator() returns the base type, which is later passed to the delete operator.
> Today both G1 and Shenandoah leaks memory here. I noticed this bug when when implementing
> ZCollectedHeap::parallel_object_iterator(). Bug was introduced in JDK-8215624.

Good catch.

-------------

Marked as reviewed by shade (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/395