[never 9 sep 96]
mocha is the java decompiler that's available on the net.
when decompiling certain files, java crashes with a SEGV. Here's the traceback it
emitted.


never@boojum ~/java/classviewer 262 % /net/cafedead/export/disk3/jserv/jdk1.1/bi
n/java mocha.Decompiler Signature.class
java.lang.NullPointerException
SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_ACCERR [addr: 0x0]

     stackbase=EFFFE95C, stackpointer=EFFFE630

Full thread dump:
    "Finalizer thread" (TID:0xee300370, sys_thread_t:0xef370de0) prio=1
    "Async Garbage Collector" (TID:0xee300328, sys_thread_t:0xef630de0) prio=1
    "Idle thread" (TID:0xee3002e0, sys_thread_t:0xef730de0) prio=0
    "clock handler" (TID:0xee3000f0, sys_thread_t:0xef7b0de0) prio=11
    "main" (TID:0xee3000c0, sys_thread_t:0x8e5a0) prio=5 *current thread*
     java.lang.Throwable.printStackTrace(Throwable.java)
     java.lang.ThreadGroup.uncaughtException(ThreadGroup.java)
     java.lang.ThreadGroup.uncaughtException(ThreadGroup.java)
Monitor Cache Dump:
Registered Monitor Dump:
    Finalize me queue lock: unowned
    Thread queue lock: unowned
    Class lock: unowned
    String intern lock: unowned
    Java stack lock: unowned
    Code rewrite lock: unowned
    Heap lock: unowned
    Has finalization queue lock: unowned
    Monitor IO lock: unowned
    Child death monitor: unowned
    Event monitor: unowned
    I/O monitor: unowned
    Alarm monitor: unowned
     Waiting to be notified:
         "clock handler"
    Sbrk lock: unowned
    Monitor cache expansion lock: unowned
    Monitor registry: monitor owner 8e5a0: "main"
Thread Alarm Q:
Abort
never@boojum ~/java/classviewer 263 %

It also crashes on 1.0.2. I have a copy of mocha in ~never/java/zips/mocha.zip and the file
~never/java/classviewer/Signature.class will reliably cause it to crash. I find that most any
large set of class will contain at least one which will crash the runtime.