The Structure test testNestedStructureTypeInfo() is the one that's failing on my machine.

Each of the three assert statements below were able to cause a failure in the VM. Commenting them all allowed for the tests to complete without error.

assertEquals("Wrong type information for 'inner' field", inner, els.getPointer(0)); assertEquals("Wrong type information for integer field", s.getTypeInfo(new Integer(0)), els.getPointer(Pointer.SIZE)); assertNull("Type element list should be null-terminated", els.getPointer(Pointer.SIZE*2));

--------------------------------------------------------------- I inserted print statements to write out the variables the asserts were operating on:

The testNestedStructureTypeInfo test is starting.

Info on s variable from testNestedStructureTypeInfo: com.sun.jna.StructureTest$NestedTypeInfoStructure(Native Allocated Memory <0x2aaaf14912e0> (8 bytes)) class com.sun.jna.StructureTest$NestedTypeInfoStructure$Inner inner@0=com.sun.jna.StructureTest$NestedTypeInfoStructure$Inner(Native Allocated Memory <0x2aaaf1491300> (4 bytes)) int dummy@0=0 memory dump [00000000] int dummy@4=0 memory dump [00000000] [00000000]

Info on p variable from testNestedStructureTypeInfo: Native Allocated Memory <0x2aaaf190b050> (24 bytes) els info from testNestedStructureTypeInfo: native@0xf149152000000000

Info on inner variable from testNestedStructureTypeInfo: Native Allocated Memory <0x2aaaf1491620> (24 bytes)

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Hope this gives more insight into the behavior on my machine.

[junit] Running com.sun.jna.StructureTest [junit] # [junit] # An unexpected error has been detected by Java Runtime Environment: [junit] # [junit] # SIGSEGV (0xb) at pc=0x00002b7ce3d7ccf6, pid=2819, tid=1076017488 [junit] # [junit] # Java VM: Java HotSpot(TM) 64-Bit Server VM (1.6.0_03-b05 mixed mode) [junit] # Problematic frame: [junit] # C [libc.so.6+0x7ccf6] memcpy+0x46 [junit] # [junit] # An error report file with more information is saved as hs_err_pid2819.log [junit] # [junit] # If you would like to submit a bug report, please visit: [junit] # http://java.sun.com/webapps/bugreport/crash.jsp [junit] #

I've attached the log file that was generated by the VM.

thanks! Richard