[7u60] Request for review & approval for 8025512: NPE with logging while launching webstart on jre7u40 if logging is disabled

[Daniel Fuchs]

Hi,

This is a request for review & approval for
8025512: NPE with logging while launching webstart on jre7u40
          if logging is disabled

webrev: http://cr.openjdk.java.net/~dfuchs/webrev_8025512/webrev.00/
bugid: https://bugs.openjdk.java.net/browse/JDK-8025512

In some circumstances, an NPE can occur in logging initialization.

This is because there is one place (in Logger.setParent) where access to
'manager' is not guarded by a if (manager == null) - as is done
every where else.

The fix is to copy over the code we already have for this method in
JDK 8, and do:

if (manager == null) {
    manager = LogManager.getLogManager();
}

The risk should be very limited. Not guarding for manager == null
in this place was an oversight.

The test case will fail without the fix and pass with it.


best regards,

-- daniel