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From "Caroline Maynard (JIRA)" <tuscany-...@ws.apache.org>
Subject [jira] Updated: (TUSCANY-1147) AccessViolation in DataObjectImpl::clearReferences()
Date Wed, 04 Apr 2007 09:42:32 GMT

     [ https://issues.apache.org/jira/browse/TUSCANY-1147?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Caroline Maynard updated TUSCANY-1147:
--------------------------------------

    Attachment: Tuscany-1147.patch

OK, here's version 3. This one has the same code to fix the problem of the dangling reference.
But it also deals with the problem mainfested in testcase b46617b. What's happening there
(incidentally, that testcase was adapted from one of the PHP tests!) is that the employee
of the month is also the CEO. Both CEO and EOTM are properties of the company type. When the
company is discarded, it happens that the CEO property is unset first. Part of unsetting the
CEO is to clear references, which include the EOTM. The code reenters the unset method, and
the references array gets corrupted. My patch simply separates the loop for deleting the references
from the loop for unsetting them, so avoids the corruption. 

> AccessViolation in DataObjectImpl::clearReferences()
> ----------------------------------------------------
>
>                 Key: TUSCANY-1147
>                 URL: https://issues.apache.org/jira/browse/TUSCANY-1147
>             Project: Tuscany
>          Issue Type: Bug
>          Components: C++ SDO
>    Affects Versions: Cpp-current
>         Environment: Win32, PHP 5.2.1
>            Reporter: Caroline Maynard
>            Priority: Critical
>         Attachments: SDOAPITest.php, Tuscany-1147.patch, Tuscany-1147.patch, Tuscany-1147.patch
>
>
> Problem observed when SDO A refers to SDO B.  The reference to SDO A is dropped. Then
the reference to SDO B is dropped. An AccessViolation occurs in the SDODataObject destructor,
in DataObjectImpl::clearReferences().
> I believe this is because the reference was not properly cleared at the time of A's destruction.


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