* eval.c (top_using): raise a RuntimeError if using is called in a

  module definition or a method definition.

* test/ruby/test_refinement.rb: related test.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38274 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 27 insertions, 0 deletions

diff --git a/test/ruby/test_refinement.rb b/test/ruby/test_refinement.rb
index 0d934d737e..016aa15f19 100644
--- a/test/ruby/test_refinement.rb
+++ b/test/ruby/test_refinement.rb
@@ -624,6 +624,33 @@ class TestRefinement < Test::Unit::TestCase
     end
   end
 
+  def test_using_in_module
+    assert_raise(RuntimeError) do
+      eval(<<-EOF, TOPLEVEL_BINDING)
+        $main = self
+        module M
+        end
+        module M2
+          $main.send(:using, M)
+        end
+      EOF
+    end
+  end
+
+  def test_using_in_method
+    assert_raise(RuntimeError) do
+      eval(<<-EOF, TOPLEVEL_BINDING)
+        $main = self
+        module M
+        end
+        def call_using_in_method
+          $main.send(:using, M)
+        end
+        call_using_in_method
+      EOF
+    end
+  end
+
   private
 
   def eval_using(mod, s)