Fix array over-run; issue 1723

diff --git a/lily/beaming-pattern.cc b/lily/beaming-pattern.cc
index a0fa25e7f7a782b2aeba4fa045492ec6c89cfb9a..b9d6ad059b8284cbe668451357e6318363551d11 100644 (file)
--- a/lily/beaming-pattern.cc
+++ b/lily/beaming-pattern.cc
@@ -217,7 +217,7 @@ Beaming_pattern::unbeam_invisible_stems ()
         infos_[i].beam_count_drul_[RIGHT] = b;
       }
 
-  for (vsize i = infos_.size (); i--;)
+  for (vsize i = infos_.size () - 1; i--;)
     if (infos_[i].invisible_)
       {
         int b = min (infos_[i].count (LEFT), infos_[i + 1].count (LEFT));