3 files changed, 3 insertions, 2 deletions
diff --git a/test/ruby/test_objectspace.rb b/test/ruby/test_objectspace.rb
index 571c725986..24731a7a50 100644
--- a/test/ruby/test_objectspace.rb
+++ b/test/ruby/test_objectspace.rb
@@ -61,6 +61,7 @@ End
       ObjectSpace.define_finalizer(a) { p :ok }
       b = a.dup
       ObjectSpace.define_finalizer(a) { p :ok }
+      !b
     END
     assert_raise(ArgumentError) { ObjectSpace.define_finalizer([], Object.new) }
   end
diff --git a/test/ruby/test_rubyoptions.rb b/test/ruby/test_rubyoptions.rb
index 65e692ecc0..5befa465a3 100644
--- a/test/ruby/test_rubyoptions.rb
+++ b/test/ruby/test_rubyoptions.rb
@@ -182,7 +182,7 @@ class TestRubyOptions < Test::Unit::TestCase
   end
 
   def test_syntax_check
-    assert_in_out_err(%w(-c -e a=1+1), "", ["Syntax OK"], [])
+    assert_in_out_err(%w(-c -e a=1+1 -e !a), "", ["Syntax OK"], [])
   end
 
   def test_invalid_option
diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb
index 3c10cce3c3..0322448c71 100644
--- a/test/ruby/test_thread.rb
+++ b/test/ruby/test_thread.rb
@@ -231,7 +231,7 @@ class TestThread < Test::Unit::TestCase
       t1 = Thread.new { sleep }
       Thread.pass
       t2 = Thread.new { loop { } }
-      t3 = Thread.new { }.join
+      Thread.new { }.join
       p [Thread.current, t1, t2].map{|t| t.object_id }.sort
       p Thread.list.map{|t| t.object_id }.sort
     INPUT