RFR(XS): 8232757: VM fails to report an error for DumpLoadedClassList when cds is disabled

[Jie Fu]

Hi all,

JBS: https://bugs.openjdk.java.net/browse/JDK-8232757
Webrev: http://cr.openjdk.java.net/~jiefu/8232757/webrev.00/

-XX:DumpLoadedClassList doesn't work as expected when cds is disabled.
People my get confused since the VM doesn't report an error for this case.
So it might be worth fixing it.

For more background of this issue, please refer to the JBS.

Testing:
  - make test TEST="runtime/cds runtime/modules" CONF=server-release 
with cds enabled/disabled
  - make test TEST="tier1 tier2 tier3" CONF=server-release

Could you please review it and give me some advice?

Thanks a lot.
Best regards,
Jie