small checks

2015-08-06 18:27:25 +03:00
parent c0071c947d
commit 2c6ca7b4f2
4 changed files with 5 additions and 0 deletions
--- a/lib/virtual/instructions/set.rb
+++ b/lib/virtual/instructions/set.rb
@ -6,6 +6,7 @@ module Virtual
  # from may be a Constant (Object,Integer,String,Class)
  class Set < Instruction
    def initialize from , to
+      raise "no to slot #{to}" unless to.is_a? Slot
      @from = from
      @to = to
    end