2 files changed, 6 insertions, 1 deletions
diff --git a/test/ruby/test_call.rb b/test/ruby/test_call.rb
index 14b6a6431b..33eec70f6a 100644
--- a/test/ruby/test_call.rb
+++ b/test/ruby/test_call.rb
@@ -42,5 +42,10 @@ class TestCall < Test::Unit::TestCase
     assert_equal(6, o.x)
     o.?x *= 7
     assert_equal(42, o.x)
+
+    o = nil
+    assert_nil(o.?x)
+    assert_nothing_raised(NoMethodError) {o.?x = 6}
+    assert_nothing_raised(NoMethodError) {o.?x *= 7}
   end
 end
diff --git a/test/ruby/test_iseq.rb b/test/ruby/test_iseq.rb
index 41b6c42dc9..ff47760173 100644
--- a/test/ruby/test_iseq.rb
+++ b/test/ruby/test_iseq.rb
@@ -149,7 +149,7 @@ class TestISeq < Test::Unit::TestCase
     src = "a['foo'] = a['bar']; 'a'.freeze"
     _,_,_,_,_,_,_,_,_,_,_,_,_,body= RubyVM::InstructionSequence.compile(src, __FILE__, __FILE__, __LINE__, false).to_a
     body.each{|insn|
-      next if Integer === insn
+      next unless Array === insn
       op = insn.first
       assert(!op.to_s.match(/^opt_/), "#{op}")
     }