https://llvm.org/bugs/show_bug.cgi?id=31304
Bug ID: 31304
Summary: Wrongly detected Called C++ object pointer is null for
QModelIndex
Product: clang
Version: 3.9
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Static Analyzer
Assignee: kreme...@apple.com
Reporter: xiangzha...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
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
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