The one of the following collection of crashes occur roughly one in
five times when running the regression test UnloadEventTest:

--------------

Unexpected Signal : 11 occurred at PC=0xFE56773C
Function=JVM_IsInterface+0x230
Library=/export/LadybirdMerlinMerge/build/solaris-sparc/lib/sparc/client/libjvm.so

Current Java thread:
        at java.nio.CharsetEncoder.encode(CharsetEncoder.java:286)

--------------

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 10 occurred at PC=0xFE0802A0
Function=commonRef_unlock+0x1F4
Library=/export/LadybirdMerlinMerge/build/solaris-sparc/lib/sparc/libjdwp.so

Current Java thread:
        at java.nio.CharsetEncoder.encode(CharsetEncoder.java:286)

--------------

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 10 occurred at PC=0xFE0802A0
Function=commonRef_unlock+0x1F4
Library=/export/LadybirdMerlinMerge/build/solaris-sparc/lib/sparc/libjdwp.so

Current Java thread:
        at UnloadEventTarg.forceUnload(UnloadEventTarg.java:32)
        at UnloadEventTarg.main(UnloadEventTarg.java:12)

--------------

Unexpected Signal : 10 occurred at PC=0xFE56773C
Function=JVM_IsInterface+0x230
Library=/export/LadybirdMerlinMerge/build/solaris-sparc/lib/sparc/client/libjvm.so

Current Java thread:
        at java.nio.CharsetEncoder.encode(CharsetEncoder.java:286)
        at java.io.OutputStreamWriter$CharsetByteOutputter.fillBytes(OutputStreamWriter.java:329)

--------------

Unexpected Signal : 11 occurred at PC=0xFE56773C
Function=JVM_IsInterface+0x230
Library=/export/LadybirdMerlinMerge/build/solaris-sparc/lib/sparc/client/libjvm.so

Current Java thread:
at java.lang.ref.Finalizer.forkSecondaryFinalizer(Finalizer.java:109)
at java.lang.ref.Finalizer.runFinalization(Finalizer.java:129)
at java.lang.Runtime.runFinalization0(Native Method)
at java.lang.Runtime.runFinalization(Runtime.java:641)
at java.lang.System.runFinalization(System.java:755)
at UnloadEventTarg.forceUnload(UnloadEventTarg.java:39)
at UnloadEventTarg.main(UnloadEventTarg.java:12)