RFR (XS) 8205702: assert(UseCompressedClassPointers) failed in universe.hpp

[Jiangli Zhou]

> On Jun 26, 2018, at 4:00 PM, coleen.phillimore at oracle.com wrote:
> 
> 
> 
> On 6/26/18 5:57 PM, Jiangli Zhou wrote:
>> Hi Coleen,
>> 
>> This looks good.
>> 
>> Should we also disable UseSharedSpaces at runtime for ZGC in case an archive was dumped using a different GC algorithm? I ran into tmpfs error when trying to run with ZGC, so I couldn’t double check for that case...
> 
> Yes, this change does this also.

You are right! 

Thanks,
Jiangli

> Thanks,
> Coleen
> 
>> 
>> Thanks,
>> Jiangli
>> 
>>> On Jun 26, 2018, at 2:13 PM, coleen.phillimore at oracle.com wrote:
>>> 
>>> Summary: Disable CDS with ZGC
>>> 
>>> Tested with:
>>> java -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -Xshare:dump
>>> java -XX:+UnlockExperimentalOptions -XX:+UseZGC -Xshare:on -version
>>> 
>>> open webrev at http://cr.openjdk.java.net/~coleenp/8205702.01/webrev
>>> bug link https://bugs.openjdk.java.net/browse/JDK-8205702
>>> 
>>> Thanks,
>>> Coleen
>