Date: Mon, 22 Nov 1999 16:29:47 -0500 (EST) From: Sean Reilly <sreilly@seanreilly.com> To: freebsd-java@freebsd.org Subject: SIGSEGV using JPython Message-ID: <Pine.BSF.4.05.9911221629000.9423-100000@sean.cnri.reston.va.us>
next in thread | raw e-mail | index | archive | help
I've been messing around with JPython lately (see www.jpython.org) and
have been getting a SIGSEGV repeatedly using the FreeBSD JDK (the
9/22/1999 version). To repeat it, you'll need to install JPython which
you can get for free from jpython.org. Then, run the following
simple program using the command-line interpreter:
> ./jpython
JPython 1.1beta4 on java1.1.8 (JIT: NONE)
Copyright (C) 1997-1999 Corporation for National Research Initiatives
>>> from java.awt import *
>>> f = Frame.Frame("Test frame")
The result is the following thread dump:
SIGSEGV 11* segmentation violation
Full thread dump:
"Finalizer thread" (TID:0x2866f210, sys_thread_t:0x29473f00, state:R)
prio=1
"Async Garbage Collector" (TID:0x2866f258, sys_thread_t:0x29452f00,
state:R) prio=1
"Idle thread" (TID:0x2866f2a0, sys_thread_t:0x29431f00, state:R)
prio=0
"Clock" (TID:0x2866f088, sys_thread_t:0x29410f00, state:CW) prio=12
"main" (TID:0x2866f0b0, sys_thread_t:0x8124a00, state:R) prio=5
*current thread*
org.python.core.PyJavaClass.setBeanInfoCustom(PyJavaClass.java:538)
org.python.core.PyJavaClass.init__dict__(PyJavaClass.java:69)
org.python.core.PyJavaClass.initialize(PyJavaClass.java:90)
org.python.core.PyJavaClass.init__bases__(PyJavaClass.java:146)
org.python.core.PyJavaClass.initialize(PyJavaClass.java:89)
org.python.core.PyJavaClass.init__bases__(PyJavaClass.java:146)
org.python.core.PyJavaClass.initialize(PyJavaClass.java:89)
org.python.core.PyJavaClass.init__bases__(PyJavaClass.java:146)
org.python.core.PyJavaClass.initialize(PyJavaClass.java:89)
org.python.core.PyJavaClass.lookupGivingClass(PyJavaClass.java:621)
org.python.core.PyClass.lookup(PyClass.java:156)
org.python.core.PyJavaClass.__findattr__(PyJavaClass.java:665)
org.python.core.PyObject.__getattr__(PyObject.java:597)
org.python.core.PyObject.invoke(PyObject.java:1867)
org.python.pycode._pyx2.f$0(<console>)
org.python.pycode._pyx2.call_function(<console>)
org.python.core.PyTableCode.call(PyTableCode.java:155)
org.python.core.Py.runCode(Py.java:965)
org.python.core.Py.exec(Py.java:979)
org.python.util.PythonInterpreter.exec(PythonInterpreter.java:122)
Monitor Cache Dump:
Registered Monitor Dump:
Verifier lock: <unowned>
Thread queue lock: <unowned>
Name and type hash table lock: <unowned>
String intern lock: <unowned>
JNI pinning lock: <unowned>
JNI global reference lock: <unowned>
BinClass lock: <unowned>
Class loading lock: <unowned>
Java stack lock: <unowned>
Code rewrite lock: <unowned>
Heap lock: <unowned>
Has finalization queue lock: <unowned>
Finalize me 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" (0x29410f00)
Memory allocation lock: <unowned>
Monitor registry: owner "main" (0x8124a00, 1 entry)
Thread Alarm Q:
Abort (core dumped)
------------------------------------------------------------------
Here is the snippet of JPython code with line numbers, that seems to be
causing the problem:
537 Class eClass = args[0];
538 if (!(java.util.EventListener.class.isAssignableFrom(eClass)))
539 continue;
The isAssignableFrom seems like a rarely used method (at least in my
experience) so maybe that's the problem?
Thanks,
Sean
PS The last time I checked the Java2 for FreeBSD RFE had over 1400 votes!
Unfortunately the BugParade has been down the last few times I tried to
check it out.
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-java" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.05.9911221629000.9423-100000>