PS: assert(!limit_exceeded || softrefs_clear) failed: Should have been cleared

I'll need to check if this has been seen on platforms other than amd64 and baselines
other than comp_baseline below. This looks like the first time this failure has been
noted by a human, although i need to check if it's been noted in the nightly tests
before but missed by us. (I'll update this space when i find out for sure one way or
another.)

http://sqeweb.sfbay.sun.com/nfs/results/vm/gtee/JDK7/NIGHTLY/VM/2010-08-10/Comp_Baseline/vm/windows-amd64/server/comp/windows-amd64_vm_server_comp_nsk.stress.testlist/ResultDir/jck122012/hs_err_pid6060.log

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (C:\temp\jprt\P1\B\191642.never\source\src\share\vm\gc_implementation\parallelScavenge\parallelScavengeHeap.cpp:470), pid=6060, tid=2624
# assert(!limit_exceeded || softrefs_clear) failed: Should have been cleared
#
# JRE version: 7.0
# Java VM: OpenJDK 64-Bit Server VM (19.0-b04-201008101916.never.6975027-fastdebug compiled mode windows-amd64 )
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

--------------- T H R E A D ---------------

Current thread (0x000000000a1a5800): JavaThread "Thread-261" [_thread_in_vm, id=2624, stack(0x000000001c520000,0x000000001c620000)]

Stack: [0x000000001c520000,0x000000001c620000]
[error occurred during error reporting (printing stack bounds), id 0xe0000000]


[error occurred during error reporting (printing native stack), id 0xe0000000]


Not unexpectedly, the heap is very nearly full when the error occurs:-

VM state:synchronizing (normal execution)

VM Mutex/Monitor currently owned by a thread: ([mutex/lock_event])
[0x000000000056be08] Threads_lock - owner thread: 0x00000000060f9800
[0x000000000056c628] Heap_lock - owner thread: 0x000000000b03e000
[0x000000000056cf18] MethodData_lock - owner thread: 0x0000000006150000

Heap
 PSYoungGen total 466048K, used 233088K [0x00000000da960000, 0x0000000105400000, 0x0000000105400000)
  eden space 233088K, 100% used [0x00000000da960000,0x00000000e8d00000,0x00000000e8d00000)
  from space 232960K, 0% used [0x00000000e8d00000,0x00000000e8d00000,0x00000000f7080000)
  to space 232960K, 0% used [0x00000000f7080000,0x00000000f7080000,0x0000000105400000)
 PSOldGen total 1398144K, used 1398126K [0x0000000085400000, 0x00000000da960000, 0x00000000da960000)
  object space 1398144K, 99% used [0x0000000085400000,0x00000000da95b8f0,0x00000000da960000)
 PSPermGen total 21248K, used 8898K [0x0000000080000000, 0x00000000814c0000, 0x0000000085400000)
  object space 21248K, 41% used [0x0000000080000000,0x00000000808b0838,0x00000000814c0000)


and for the errant thread:-

--------------- T H R E A D ---------------

Current thread (0x000000000a1a5800): JavaThread "Thread-261" [_thread_in_vm, id=2624, stack(0x000000001c520000,0x000000001c620000)]

Stack: [0x000000001c520000,0x000000001c620000]
[error occurred during error reporting (printing stack bounds), id 0xe0000000]


[error occurred during error reporting (printing native stack), id 0xe0000000]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
v ~RuntimeStub::_new_array_Java
J java.lang.StringBuffer.<init>(Ljava/lang/String;)V
j javasoft.sqe.tests.vm.classfmt.lmt.stcksz001.stcksz00101m1.stcksz00101m1.run([Ljava/lang/String;Ljava/io/PrintStream;)I+62
v ~StubRoutines::call_stub
J sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
j sun.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+87
j sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+6
j java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+161
J nsk.stress.share.StressTest$TestThread.runTest(I)V
j nsk.stress.share.StressTest$TestThread.run()V+27
v ~StubRoutines::call_stub

=>0x000000000a1a5800 JavaThread "Thread-261" [_thread_in_vm, id=2624, stack(0x000000001c520000,0x000000001c620000)]

The assert in question appears to have been added as part of:-

6858496 Clear all SoftReferences before reaching the GC overhead limit

so i have added that CR to the "See also" field.
gc/gctests/FinalizeLock