Only emit headerDataChanged for valid proxy intervals.

Modeltest asserts before the patch, and passes afterward.

Task-number: QTBUG-26515

Change-Id: I08a89cd5c9c59613badcddbd056a3d0b8fbbca13
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/auto/other/modeltest/modeltest.h b/tests/auto/other/modeltest/modeltest.h
index 1b254a4009..9c828dbb95 100644
--- a/tests/auto/other/modeltest/modeltest.h
+++ b/tests/auto/other/modeltest/modeltest.h
@@ -71,6 +71,8 @@ protected Q_SLOTS:
   void rowsInserted( const QModelIndex & parent, int start, int end );
   void rowsAboutToBeRemoved( const QModelIndex &parent, int start, int end );
   void rowsRemoved( const QModelIndex & parent, int start, int end );
+  void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
+  void headerDataChanged(Qt::Orientation orientation, int start, int end);
 
 private:
   void checkChildren( const QModelIndex &parent, int currentDepth = 0 );