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Date: Thu, 5 Apr 2007 15:03:36 -0700 (PDT)
From: "Caroline Maynard (JIRA)" <tuscany-dev@ws.apache.org>
To: tuscany-dev@ws.apache.org
Subject: [jira] Updated: (TUSCANY-1203) Yet another AccessViolation in
 DataObjectImpl::~DataObjectImpl
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     [ https://issues.apache.org/jira/browse/TUSCANY-1203?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Caroline Maynard updated TUSCANY-1203:
--------------------------------------

    Patch Info: [Patch Available]

I'vve added to 1147 a combined patch for 1147, 1202 and 1203, which should be simpler to apply.

> Yet another AccessViolation in DataObjectImpl::~DataObjectImpl
> --------------------------------------------------------------
>
>                 Key: TUSCANY-1203
>                 URL: https://issues.apache.org/jira/browse/TUSCANY-1203
>             Project: Tuscany
>          Issue Type: Bug
>          Components: C++ SDO
>    Affects Versions: Cpp-current
>         Environment: PHP 
>            Reporter: Caroline Maynard
>         Attachments: Tuscany-1203.patch
>
>
> This one occurs when deleting a DataObject which has several open properties. The logic in the destructor is: 
>   while (i != PropertyValues.end()) 
>         {
>             unsigned int pindx = (*i).first;
>             DataObjectImplPtr dol = (*i).second;
>             unset(pindx);
>             i = PropertyValues.begin();
>             if (i != PropertyValues.end() && (*i).first == pindx )
>             {
>                 // unset has not removed the item from the list - do it 
>                 // here instead
>                 PropertyValues.erase(i);
>                 i = PropertyValues.begin();
>             }
>         }
> However what happens in the unset() method is that if the property is open, undefineProperty() is called. This removes the open property and "shuffles up" the rest, so that a different property is assigned the property index pindx. Which means that even though the unset has removed the item from the list, the test (*).first==pindx  passes, which results in the next property being removed from the list even though it has not yet been unset. 

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