RFR: 8224962: ZGC: Strengthen ZHeap::is_oop()

[Per Liden]

Thanks Erik!

/Per


On 6/3/19 3:10 PM, Erik Österlund wrote:
> Hi Per,
> 
> Looks good.
> 
> /Erik
> 
> On 2019-05-29 11:26, Per Liden wrote:
>> ZHeap::is_oop() currently only verifies that the metadata bits are 
>> good. However, we should also check that non-offset and non-metadata 
>> bits are not set.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8224962
>> Webrev: http://cr.openjdk.java.net/~pliden/8224962/webrev.0
>>
>> /Per
>