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src/Tools/Graphview/layout.scala
changeset 59447 e7cbfe240078
parent 59419 2fb2194853cc
child 67601 b34be3010273 
--- a/src/Tools/Graphview/layout.scala	Sun Jan 25 22:11:06 2015 +0100
+++ b/src/Tools/Graphview/layout.scala	Mon Jan 26 13:44:37 2015 +0100
@@ -235,6 +235,7 @@
                 graph.imm_succs(top(inner_parent)).iterator.map(bot.indexOf(_)).
                   filter(inner_child => outer_child < inner_child).size).sum).sum
         }.sum
+      case _ => 0
     }.sum
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