RFR 8165753: Custom security manager, crashing wth 'java/security/AccessControlException'

[Vladimir Kempik]

Hello

Please review the fix for 8165753: Custom security manager, crashing wth 
'java/security/AccessControlException'

Initially this bug came for jdk8, and it has reproducer for jdk8.

However this reproducer doesn't crash jdk9/10, but still needed there, 
see explanation of this from David Holmes:

https://bugs.openjdk.java.net/browse/JDK-8165753?focusedCommentId=14001767&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14001767

The fix changes behaviour from a crash to a nice exception on jdk8, but 
I need to get the fix into jdk10/9 first (jdk9/10 shows no visible 
difference with testcase before/after patch)

Error occurred during initialization of VM
java.security.AccessControlException: access denied 
("java.lang.RuntimePermission" "modifyThreadGroup")
     at 
java.security.AccessControlContext.checkPermission(AccessControlContext.java:472)
     at 
java.security.AccessController.checkPermission(AccessController.java:884)
     at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
     at foo.TestSecurityManager.checkPermission(TestSecurityManager.java:48)
     at java.lang.SecurityManager.checkAccess(SecurityManager.java:729)
     at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:315)
     at java.lang.Thread.init(Thread.java:391)
     at java.lang.Thread.init(Thread.java:349)
     at java.lang.Thread.<init>(Thread.java:532)


The bug: https://bugs.openjdk.java.net/browse/JDK-8165753

The Webrev: http://cr.openjdk.java.net/~vkempik/8165753/webrev.00/

Testing: jprt testset hotspot

Thanks, Vladimir