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From "Shapira, Yoav" <Yoav.Shap...@mpi.com>
Subject RE: StackOverflow
Date Thu, 09 Oct 2003 12:52:03 GMT

Howdy,
You usually don't get stack traces on StackOverflowErrors.  In fact,
many times you won't get a stack trace for an Error at all (as opposd to
an exception).  It's not a tomcat issue: I've seen the same behavior on
Weblogic and Websphere.  The reason is simple: there's no room on the
stack to store the error stack trace itself ;)

Yoav Shapira
Millennium ChemInformatics


>-----Original Message-----
>From: Adam Hardy [mailto:ahardy.struts@cyberspaceroad.com]
>Sent: Thursday, October 09, 2003 8:44 AM
>To: Tomcat Users List
>Subject: Re: StackOverflow
>
>For all those out there hanging on every msg in this thread, it seems
it
>was just an infinite loop. Personally I think it was gremlins that came
>in last night and coded it.
>
>Remarkable how their coding style is so similar to my own. ;)
>
>At least there's one positive point, I'm learning to listen to the
>little voice in the back of my head, which told me not to put it in
>bugzilla with lots of quotes from Nietzsche and Dostoevsky.
>
>But seriously, the original error message was amazingly misleading.
That
>my code threw the exception was my fault but tomcat couldn't handle the
>stack trace and worse, output an error message quoting my filter as the
>source.
>
>I know the filter would have been near the bottom of the stacktrace,
>since it would be amazingly long due to the infinite loop, but of
course
>it made me think that tomcat had fallen over trying to handle the
>request before it even passed it on to struts & my code.
>
>No? Is this an issue?
>
>Adam
>
>On 10/09/2003 02:09 PM Adam Hardy wrote:
>> OK can someone answer a simple question here:
>>
>> if tomcat gives me a StackOverflowError, does that mean that there is
no
>> way of getting a stack trace? Or am I making 2 + 2 = 5?
>>
>> Adam
>>
>>
>>
>>
>> On 10/09/2003 01:45 PM Adam Hardy wrote:
>>
>>> OK so I took the SetCharacterEncodingFilter out of the equation, but
>>> the stack overflow still occurs:
>>>
>>> StandardWrapperValve[action]: Servlet.service() for servlet action
>>> threw exception
>>> java.lang.StackOverflowError
>>>
>>> I presume [action] refers to struts, which I'm running.
>>>
>>> Any ideas anyone?
>>>
>>> On 10/08/2003 10:00 PM Adam Hardy wrote:
>>>
>>>> I'm getting a Status 500 error page in my app
>>>>
>>>> javax.servlet.ServletException: Servlet execution threw an
exception
>>>>
>org.blacksail.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingF
ilte
>r.java:146)
>>>>
>>>> root cause java.lang.StackOverflowError
>>>>
>>>> It goes on to say that "the full stack trace of the root cause is
>>>> available in the Tomcat logs.", but it isn't. I have the looked on
>>>> the console, in the engine, host & context log files but I can't
find
>>>> a stack trace.
>>>>
>>>> Whether I need one or not is questionable - that
>>>> SetCharacterEncodingFilter is the one from tomcat's example app and
>>>> has been working faultlessly for at least two weeks on tomcat5.
Sets
>>>> encoding to UTF-8.
>>>>
>>>> I can't think of what I have changed that has caused this, so I am
at
>>>> a loss. There's nothing in bugzilla that looks like this, and I
can't
>>>> see anything relevant in the archives.
>>>>
>>>> It's reproducible, every time at the same place. Is there anything
I
>>>> can do or should I just log it straight into bugzilla?
>>>>
>>>> Adam
>>>
>>>
>>>
>>
>
>--
>struts 1.1 + tomcat 5.0.12 + java 1.4.2
>Linux 2.4.20 RH9
>
>
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