RFR(S): 6896810:TEST_BUG: java/lang/ref/SoftReference/Pin.java fails with OOME during System.out.println

[Stefan Särne]

Hi all,

Please review and sponsor this fix.

Bug: https://bugs.openjdk.java.net/browse/JDK-6896810
<https://bugs.openjdk.java.net/browse/JDK-8073718>Webrev: 
http://cr.openjdk.java.net/~sjohanss/sponsor/ssarne/JDK-6896810/webrev.jdk.00/
<http://cr.openjdk.java.net/%7Esla/stefan/8073718/webrev.00/>
The test fails since it run out of memory (again) when it tries to print 
that the expected OOME is received. Additional allocations are done 
during printing and the next OOME is thrown out of the test. By freeing 
the "chain" that hogs the memory on the heap, the test continues and the 
additional checks of checking that the blocks are empty are performed 
and pass.

Tested: Run with all GC combinations.

The test is part of tier1 for the jdk and this blocks integration from 
jdk9/hs to jdk9/dev and I therefore suggest it is integrated directly to 
jdk9/hs.

Thanks,
Stefan