Fixes hangup when pressing key in QListWidget

If there is severals matching items but all of them are disabled, it
would have produced an infinite loop.
Block the loop once we reach an already matched item.

Task-number: 258949
Reviewed-by: Thierry

1 files changed, 7 insertions, 0 deletions

diff --git a/src/gui/itemviews/qabstractitemview.cpp b/src/gui/itemviews/qabstractitemview.cpp
index 8594968097..f7d5f1b9ed 100644
--- a/src/gui/itemviews/qabstractitemview.cpp
+++ b/src/gui/itemviews/qabstractitemview.cpp
@@ -2666,6 +2666,7 @@ void QAbstractItemView::keyboardSearch(const QString &search)
     QModelIndex current = start;
     QModelIndexList match;
     QModelIndex firstMatch;
+    QModelIndex startMatch;
     QModelIndexList previous;
     do {
         match = d->model->match(current, Qt::DisplayRole, searchString);
@@ -2682,6 +2683,12 @@ void QAbstractItemView::keyboardSearch(const QString &search)
 	    if (row >= d->model->rowCount(firstMatch.parent()))
 	        row = 0;
             current = firstMatch.sibling(row, firstMatch.column());
+
+            //avoid infinite loop if all the matching items are disabled.
+            if (!startMatch.isValid())
+                startMatch = firstMatch;
+            else if (startMatch == firstMatch)
+                break;
         }
     } while (current != start && firstMatch.isValid());
 }