From 98db88ac2fb699f08d44aa287a14e5a364601314 Mon Sep 17 00:00:00 2001
From: Torsten Ruger <torsten@villataika.fi>
Date: Fri, 18 Jul 2014 00:29:45 +0300
Subject: [PATCH] not recursing into labels to avoid infinite loops

---
 lib/virtual/instruction.rb | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/lib/virtual/instruction.rb b/lib/virtual/instruction.rb
index 8edce522..20593b34 100644
--- a/lib/virtual/instruction.rb
+++ b/lib/virtual/instruction.rb
@@ -18,6 +18,22 @@ module Virtual
     def initialize nex = nil
       @next = nex
     end
+    # simple thought: don't recurse for labels, just check their names
+    def == other
+      return false unless other.class == self.class 
+      attributes.each do |a|
+        left = send(a)
+        right = other.send(a)
+        return false unless left.class == right.class 
+        if( left.is_a? Label)
+          return false unless left.name == right.name
+        else
+          return false unless left == right
+        end
+      end
+      return true
+    end
+    
   end
 
   module Named