Modules should not have subclasses.

When refining a module, the module was set to the superclass of its refinement,
and a segmentation fault occurred.
The superclass of the refinement should be an iclass of the module.
[ruby-core:83617] [Bug #14070]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60980 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 19 insertions, 0 deletions

diff --git a/test/ruby/test_refinement.rb b/test/ruby/test_refinement.rb
index d489404fff..3aab6e4f1e 100644
--- a/test/ruby/test_refinement.rb
+++ b/test/ruby/test_refinement.rb
@@ -2036,6 +2036,25 @@ class TestRefinement < Test::Unit::TestCase
     INPUT
   end
 
+  def test_refining_module_repeatedly
+    bug14070 = '[ruby-core:83617] [Bug #14070]'
+    assert_in_out_err([], <<-INPUT, ["ok"], [], bug14070)
+      1000.times do
+        Class.new do
+          include Enumerable
+        end
+
+        Module.new do
+          refine Enumerable do
+            def foo
+            end
+          end
+        end
+      end
+      puts "ok"
+    INPUT
+  end
+
   private
 
   def eval_using(mod, s)