Bug 330881: Crash when double-clicking in empty area inside isindex with position:absolute;direction:rtl;. r+sr=roc

2006-03-20 09:20:49 +00:00
parent 20ebb6652d
commit 05a9831a8e
3 changed files with 42 additions and 92 deletions
--- a/layout/generic/nsLineBox.cpp
+++ b/layout/generic/nsLineBox.cpp
@@ -685,8 +685,13 @@ nsLineIterator::CheckLineOrder(PRInt32                  aLine,
                               nsIFrame                 **aFirstVisual,
                               nsIFrame                 **aLastVisual)
 {
- 
+  NS_ASSERTION (aLine >= 0 && aLine < mNumLines, "aLine out of range!");
  nsLineBox* line = mLines[aLine];
+
+  if (!line->mFirstChild) { // empty line
+    *aIsReordered = PR_FALSE;
+    return NS_OK;
+  }
  
  nsPresContext* presContext = line->mFirstChild->GetPresContext();
  if (!presContext->BidiEnabled()) {