RFR: 8253224: Shenandoah: ShenandoahStrDedupQueue destructor calls virtual num_queues()

[Aleksey Shipilev]

On Wed, 16 Sep 2020 09:26:35 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

>> Static analysis complains that `ShenandoahStrDedupQueue` destructor calls virtual `num_queues()`. We can just do the
>> `_nv` version to make this right.
>> Testing: hotspot_gc_shenandoah
>
> Ok, looks good! Thank you!

@zhengyu123, would you like to ack too?

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PR: https://git.openjdk.java.net/jdk/pull/202