RFR: 8155993: Some tests in java/lang/management fail with NCDFE: com/sun/management/internal/GarbageCollectorExtImpl

[Mandy Chung]

> On May 10, 2016, at 12:00 PM, Alexandre (Shura) Iline <alexandre.iline at oracle.com> wrote:
> 
> Hi.
> 
> Please review the fix:
> http://cr.openjdk.java.net/~shurailine/8155993/webrev.00/
> 
> In the failing tests I have replaced java.management with jdk.management in @modules.
> 
> Besides the failed tests I have scanned all the tests which call ManagementFactory.getPlatformMBeanServer(…). Those which were not failing were already declaring dependency on jdk.management, sometimes together with java.management. Declaring java.management in such case is not needed, because java.management is a dependency of jdk.management.

In fact JDK-8155993 reveals a potential bug in the VM support for java.lang.management when jdk.management module is not present.

I have no objection to change these tests to run with jdk.management and this patch looks fine.  But we should keep JDK-8155993  open and provide a small test to reproduce NCDFE when running with an image with only java.management but no jdk.management module.

Mandy