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From "bu qi cheng" <buqi.ch...@gmail.com>
Subject Re: [jira] Resolved: (HARMONY-6013) Problems with null pointer exception catch in server or opt mode for Java applications
Date Sat, 15 Nov 2008 01:24:46 GMT
Currently, to meet M8. ChunRong has done the patch unrolling to walk around
the bug. We are waiting for the Mikhail's direction on the "magic for
monitorEnter/monitorExit". If there are "magic for
monitorEnter/monitorExit", the unrolling will be ok.  If there are no these
kind magic, we will use our solution (To make sure the CHECK NULL before
monitorEnter/monitorExit will not be eliminated simply, or eliminate the
mechanism: "catch the un-catched throw with hardware") for the problem.


Thanks!

Buqi




On Fri, Nov 14, 2008 at 10:01 AM, Xiao-Feng Li <xiaofeng.li@gmail.com>wrote:

> Is this bug worked around or really fixed?
>
> On Fri, Nov 14, 2008 at 9:54 AM, Chunrong Lai (JIRA) <jira@apache.org>
> wrote:
> >
> >     [
> https://issues.apache.org/jira/browse/HARMONY-6013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel]
> >
> > Chunrong Lai resolved HARMONY-6013.
> > -----------------------------------
> >
> >    Resolution: Fixed
> >
> >
> >  Fixed in r713673.
> >
> >> Problems with null pointer exception catch in server or opt mode for
> Java applications
> >>
> ---------------------------------------------------------------------------------------
> >>
> >>                 Key: HARMONY-6013
> >>                 URL: https://issues.apache.org/jira/browse/HARMONY-6013
> >>             Project: Harmony
> >>          Issue Type: Bug
> >>          Components: DRLVM
> >>    Affects Versions: 5.0M7
> >>         Environment: Windows XP OS, Intel Core(TM)2 Duo CPU
> >>            Reporter: Zhiguo Ge
> >>            Assignee: Chunrong Lai
> >>
> >> Harmony has problems with null pointer exception catch under server or
> opt mode for Java applications.
> >> The following shows a test example:
> >> public class Btest5710 {
> >>
> >>     Object obj;
> >>     public static void main(String [] args) {
> >>         (new Btest5710()).test();
> >>     }
> >>     public void test() {
> >>         System.err.println("Start Btest5710 test...");
> >>         try {
> >>             sync();
> >>             System.err.println("FAILED: NullPointerException was
> expected");
> >>             System.exit(-99);
> >>         } catch (NullPointerException e) {
> >>             System.err.println("PASSED: " + e);
> >>         } catch (Throwable e) {
> >>             System.err.println("Unexpected exception was thrown:");
> >>             e.printStackTrace();
> >>             System.err.println("FAILED");
> >>             System.exit(-99);
> >>         }
> >>     }
> >>     void sync() {
> >>         synchronized (obj) {
> >>             obj = new Object();
> >>         }
> >>     }
> >> }
> >> When running in server or opt mode,  error will happen and the following
> is the error message.
> >> Signal reported: GENERAL_PROTECTION_FAULT
> >> Registers:
> >>     EAX: 0x0003f700, EBX: 0x208667ac, ECX: 0x00000004, EDX: 0x00000003
> >>     ESI: 0x02fed15c, EDI: 0x0013f8c0, ESP: 0x0013f6f8, EBP: 0x0086e740
> >>     EIP: 0x00820b8f
> >
> > --
> > This message is automatically generated by JIRA.
> > -
> > You can reply to this email to add a comment to the issue online.
> >
> >
>
>
>
> --
> http://xiao-feng.blogspot.com
>

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