Ticket #886: textview.patch

TextView.cpp

@@ -1490 +1490 @@
         NormalizeFont(&newFont);
     }
 
+    const int32 textLength = fText->Length();
+
     if (!fStylable) {
         // When the text view is not stylable, we always set the whole text's
         // style and ignore the offsets
         startOffset = 0;
-        endOffset = fText->Length();
+        endOffset = textLength;
     }
 
+    // pin offsets at reasonable values
+    if (startOffset < 0)
+        startOffset = 0;
+    else if (startOffset > textLength)
+        startOffset = textLength;
+
+    if (endOffset < 0)
+        endOffset = 0;
+    else if (endOffset > textLength)
+        endOffset = textLength;
+
     // add the style to the style buffer
     fStyles->SetStyleRange(startOffset, endOffset, fText->Length(),
         fontMode, &newFont, color);