java.util.zip.ZipFile(String fname) with the filename being null causes
a segmentation violation, core dump.

In JDK 1.1.x get the proper NullPointerException thrown.

java.lang.NullPointerException
at java.io.RandomAccessFile.<init>(RandomAccessFile.java)
at java.util.zip.ZipFile.<init>(ZipFile.java)

In JDK 1.2.x get the below error:

SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_MAPERR [addr: 0x0]

stackpointer=efffe960

Full thread dump Classic VM (JDK-1.2.2-B, green threads):
    "Finalizer" (TID:0xebc98320, sys_thread_t:0x693f0, state:CW) prio=8
at java.lang.Object.wait(Native Method)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:112)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:174)
    "Reference Handler" (TID:0xebc983b0, sys_thread_t:0x64f40, state:CW) prio=10
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:424)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:114)
    "Signal dispatcher" (TID:0xebc983e0, sys_thread_t:0x5e160, state:CW) prio=5
    "main" (TID:0xebc981e0, sys_thread_t:0x26b80, state:R) prio=5
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Compiled Code)
at CtorTests_1.Test01(Compiled Code)
at CtorTests_1.main(Compiled Code)
Monitor Cache Dump:
    java.lang.ref.ReferenceQueue$Lock@EBC98338/EBCCE028: <unowned>
Waiting to be notified:
"Finalizer" (0x693f0)
    java.lang.ref.Reference$Lock@EBC983C0/EBCCDB20: <unowned>
Waiting to be notified:
"Reference Handler" (0x64f40)
Registered Monitor Dump:
    PCMap lock: <unowned>
    utf8 hash table: <unowned>
    JNI pinning lock: <unowned>
    JNI global reference lock: <unowned>
    BinClass lock: <unowned>
    Class linking lock: <unowned>
    System class loader lock: <unowned>
    Code rewrite lock: <unowned>
    Heap lock: <unowned>
    Monitor cache lock: owner "main" (0x26b80) 1 entry
    Dynamic loading lock: <unowned>
    Monitor IO lock: <unowned>
    User signal monitor: <unowned>
Waiting to be notified:
"Signal dispatcher" (0x5e160)
    Child death monitor: <unowned>
    I/O monitor: <unowned>
    Alarm monitor: <unowned>
Waiting to be notified:
<unknown thread> (0x2be70)
    Thread queue lock: owner "main" (0x26b80) 1 entry
    Monitor registry: owner "main" (0x26b80) 1 entry

SIGABRT 6* abort (generated by abort(3) routine)
    si_signo [6]: SIGABRT 6* abort (generated by abort(3) routine)
    si_errno [0]: Error 0
    si_code [0]: SI_USER [pid: 15181, uid: 24381]
stackpointer=efffe960

Full thread dump Classic VM (JDK-1.2.2-B, green threads):
    "Finalizer" (TID:0xebc98320, sys_thread_t:0x693f0, state:CW) prio=8
at java.lang.Object.wait(Native Method)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:112)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:174)
    "Reference Handler" (TID:0xebc983b0, sys_thread_t:0x64f40, state:CW) prio=10
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:424)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:114)
    "Signal dispatcher" (TID:0xebc983e0, sys_thread_t:0x5e160, state:CW) prio=5
    "main" (TID:0xebc981e0, sys_thread_t:0x26b80, state:R) prio=5
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Compiled Code)
at CtorTests_1.Test01(Compiled Code)
at CtorTests_1.main(Compiled Code)
Monitor Cache Dump:
    java.lang.ref.ReferenceQueue$Lock@EBC98338/EBCCE028: <unowned>
Waiting to be notified:
"Finalizer" (0x693f0)
    java.lang.ref.Reference$Lock@EBC983C0/EBCCDB20: <unowned>
Waiting to be notified:
"Reference Handler" (0x64f40)
Registered Monitor Dump:
    PCMap lock: <unowned>
    utf8 hash table: <unowned>
    JNI pinning lock: <unowned>
    JNI global reference lock: <unowned>
    BinClass lock: <unowned>
    Class linking lock: <unowned>
    System class loader lock: <unowned>
    Code rewrite lock: <unowned>
    Heap lock: <unowned>
    Monitor cache lock: owner "main" (0x26b80) 1 entry
    Dynamic loading lock: <unowned>
    Monitor IO lock: <unowned>
    User signal monitor: <unowned>
Waiting to be notified:
"Signal dispatcher" (0x5e160)
    Child death monitor: <unowned>
    I/O monitor: <unowned>
    Alarm monitor: <unowned>
Waiting to be notified:
<unknown thread> (0x2be70)
    Thread queue lock: owner "main" (0x26b80) 1 entry
    Monitor registry: owner "main" (0x26b80) 1 entry

Abort (core dumped)