RFR: Heap region sampling overflow in compact matrix

[Zhengyu Gu]

Good to me.

-Zhengyu

On 08/03/2017 05:57 AM, Aleksey Shipilev wrote:
> There is a problem with compact matrix encoding, that overflows the counter array. Crashes the
> fastdebug JVM when sampling is enabled.
>
> Fix:
>  http://cr.openjdk.java.net/~shade/shenandoah/sampling-matrix-overflow/webrev.01/
>
> Thanks,
> -Aleksey
>