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Bug 300699 - result of AccessibleTable.getAccessibleColumnHeader() not checked against null
result of AccessibleTable.getAccessibleColumnHeader() not checked against null
Status: RESOLVED FIXED
Product: at-spi
Classification: Platform
Component: javabridge
unspecified
Other All
: Normal blocker
: ---
Assigned To: padraig.obriain
padraig.obriain
Depends on:
Blocks:
 
 
Reported: 2005-04-15 05:00 UTC by Oliver Braun
Modified: 2005-04-18 08:57 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Oliver Braun 2005-04-15 05:00:06 UTC 
Version details: JDS 3 build 32

Open a Terminal, type "staroffice -calc <Enter>". When StarOffice 8 Calc is up,
run gnopernicus and switch focus to calc.

You'll get a whole bunch of Java exceptions in the terminal window and a couple
of minutes later SO crashes with Java out-of-heap error.

The originating part of the exception stack seems to be:

Caused by: java.lang.NullPointerException
        at
org.GNOME.Accessibility.TableImpl.getColumnHeader(TableImpl.java:250)
        at
org.GNOME.Accessibility.TablePOATie.getColumnHeader(TablePOATie.java:114)
        at org.GNOME.Accessibility.TablePOA._invoke(TablePOA.java:221)
        at
com.sun.corba.se.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:637)
        at
com.sun.corba.se.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:189)


This bug blocks _any_ accessibility testing with StarOffice Calc (Versions 7 and 8).
Comment 1 bill.haneman 2005-04-15 14:45:05 UTC 
What happens when you increase the Java runtime heap allowance?
Comment 2 bill.haneman 2005-04-15 15:00:58 UTC 
It's unusual for table.getAccessibleColumnHeader() to return null; I'd say that
was a StarOffice bug.

However you are correct that java-access-bridge should check this value before use.

This bug is now fixed in cvs.
Comment 3 Oliver Braun 2005-04-18 06:16:29 UTC 
I agree that to _always_ return null for table.getAccessibleColumnHeader() is a
StarOffice bug, but since table.getAccessibleColumnHeader() returns an instance
of AccessibleTable itself, it must be allowed to return null in some cases.
Comment 4 bill.haneman 2005-04-18 08:57:12 UTC 
I agree with your comment #3.  Thanks for the bug report Oliver.