X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Foptimal-page-breaking.cc;h=4bcf05f8e49e71604b3f4d62229dac5470b98a2c;hb=5d84bfad4626892bcffd05adcced53c8a2329047;hp=3bddcad4ba66815806fa1e691a2c2f229e1fc8f9;hpb=868b1b51b92cf47d25f4d3e91a838e976ba11eef;p=lilypond.git

diff --git a/lily/optimal-page-breaking.cc b/lily/optimal-page-breaking.cc
index 3bddcad4ba..4bcf05f8e4 100644
--- a/lily/optimal-page-breaking.cc
+++ b/lily/optimal-page-breaking.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2006--2012 Joe Neeman <joeneeman@gmail.com>
+  Copyright (C) 2006--2015 Joe Neeman <joeneeman@gmail.com>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -75,7 +75,9 @@ Optimal_page_breaking::solve ()
           if (page_count > 1 && best.systems_per_page_[page_count - 2] > 1)
             min_sys_count -= best.systems_per_page_[page_count - 2];
 
-          min_sys_count = max (min_sys_count, (vsize)1);
+          if (min_sys_count > ideal_sys_count  // subtraction wrapped around
+              || min_sys_count <= 0)
+            min_sys_count = 1;
         }
     }
   else