Closed as program error.
Error Message: Could be any syndrom (NPE, incorrect output etc) related to an uninitialized Final field in a multi-threaded environment. e.g. j> 06:00:02 java.lang.NullPointerException j> 06:00:02 at java.util.Random.next(Random.java:181) j> 06:00:02 at java.util.Random.nextInt(Random.java:301) j> 06:00:02 at tests.com.ibm.jtc.concurrent.locks.ReentrantLockTest.testStress( ReentrantLockTest.java:346) . Stack Trace: N/A . seen on z/OS and Linux on Z
-Xjit:disableScheduling turns off the instruction scheduler and provides a workaround. However this might impact performance of some programs significantly.
The 390 instruction scheduler incorrectly reordered two Store instructions and as a result we exposed an object (to other threads) before finish initializing its Final field. This is visible in a multi-threaded environment only.
This defect will be fixed in: 5.0.0 SR13 6.0.0 SR10 6.0.1 SR1 . The JVM has been updated to prevent scheduler from reordering the stores instructions. . To obtain the fix: Install build 20110628 or later
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