Fixed error when delete performed at end of document.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/Document.cxx b/src/Document.cxx
index 6614a7fc9..de06756a5 100644
--- a/src/Document.cxx
+++ b/src/Document.cxx
@@ -334,6 +334,8 @@ void Document::ModifiedAt(int pos) {
 
 // Unlike Undo, Redo, and InsertStyledString, the pos argument is a cell number not a char number
 void Document::DeleteChars(int pos, int len) {
+    if ((pos + len) > Length())
+        return;
 	if (cb.IsReadOnly() && enteredReadOnlyCount==0) {
 		enteredReadOnlyCount++;
 		NotifyModifyAttempt();