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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Wrongly detected Called C++ object pointer is null for QModelIndex"
href="https://llvm.org/bugs/show_bug.cgi?id=31304">31304</a>
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<th>Summary</th>
<td>Wrongly detected Called C++ object pointer is null for QModelIndex
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.9
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Static Analyzer
</td>
</tr>
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<th>Assignee</th>
<td>kremenek@apple.com
</td>
</tr>
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<th>Reporter</th>
<td>xiangzhai83@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Hi llvm developers,
Clang Static Analyzer consider:
QModelIndex firstColIndex = index.model()->index(index.row(), 0,
index.parent());
might Called C++ object pointer is null
*BUT* let's see the code about line 14:
Node* Node::createNodeForOriginalIndex( const QModelIndex& index )
{
if ( !index.isValid() && isPlace() ) {
return this;
}
Q_ASSERT( index.isValid() );
// all the node mapping is done on the first col, so make sure we use
// an index on the first col
//
// A valid index belongs to a model, and has non-negative row and
column numbers
// so index.model() is NOT nullptr if index.isValid()
---> QModelIndex firstColIndex = index.model()->index(index.row(), 0,
index.parent());
Node* node = findNodeForOriginalIndex( firstColIndex );
if ( !node ) {
Node* parentNode = createNodeForOriginalIndex(
firstColIndex.parent() );
node = parentNode->getChildNode( firstColIndex );
}
return node;
}
It might be a wrong detect!
Regards,
Leslie Zhai</pre>
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