fix code insertion in method

lib/common/list.rb

@@ -32,7 +32,7 @@ module Common
     # but allowing the instruction to be a list too (ie more than one)
     def insert( instruction )
       instruction.last.set_next @next
-      @next = instruction.last
+      @next = instruction
     end
 
     # return last set instruction. ie follow the linked list until it stops

lib/risc/method_compiler.rb

@@ -107,7 +107,7 @@ module Risc
       raise "Not an instruction:#{instruction.to_s}" unless  instruction.is_a?(Risc::Instruction)
       raise instruction.to_s if( instruction.class.name.split("::").first == "Arm")
       @current.insert(instruction) #insert after current
-      @current = instruction
+      @current = instruction.last
       self
     end
 

test/mom/helper.rb

@@ -41,7 +41,7 @@ module Risc
       Parfait.object_space.get_main.instructions
     end
     def real_index(index)
-      index - preamble.length + 1
+      index - preamble.length
     end
     def compare_instructions( instruction , expect )
       index = 0
@@ -50,7 +50,7 @@ module Risc
       #full_expect =  expect
       begin
         should = full_expect[index]
-        return "No instruction at #{index}\n#{should(all)}" unless should
+        return "No instruction at #{real_index(index)}\n#{should(all)}" unless should
         return "Expected at #{real_index(index)}\n#{should(all)} was #{instruction.to_s}" unless instruction.class == should
         #puts instruction.to_s if (index > preamble.length) and (index + postamble.length <= full_expect.length)
         index += 1