Added check for array boundaries

noborus · Dec 2, 2020 · a8cd61d · a8cd61d
1 parent bb7e37d
commit a8cd61d
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/oviewer/move.go b/oviewer/move.go
@@ -71,7 +71,11 @@ func (root *Root) moveNumUp(hight int) {
 			}
 			n = len(startX)
 		}
-		x = startX[n-1]
+		if n > 0 {
+			x = startX[n-1]
+		} else {
+			x = 0
+		}
 		n--
 	}
 	root.Doc.lineNum = num - root.Doc.Header