1 files changed, 5 insertions, 0 deletions
diff --git a/WebCore/editing/InsertLineBreakCommand.cpp b/WebCore/editing/InsertLineBreakCommand.cpp
index caaae0a..d805acf 100644
--- a/WebCore/editing/InsertLineBreakCommand.cpp
+++ b/WebCore/editing/InsertLineBreakCommand.cpp
@@ -94,6 +94,11 @@ void InsertLineBreakCommand::doApply()
         return;
     
     VisiblePosition caret(selection.visibleStart());
+    // FIXME: If the node is hidden, we should still be able to insert text. 
+    // For now, we return to avoid a crash.  https://bugs.webkit.org/show_bug.cgi?id=40342
+    if (caret.isNull())
+        return;
+
     Position pos(caret.deepEquivalent());
 
     pos = positionAvoidingSpecialElementBoundary(pos);