1 files changed, 7 insertions, 0 deletions
diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
index d915ae25d7..a5fd2897a2 100644
--- a/test/ruby/test_gc.rb
+++ b/test/ruby/test_gc.rb
@@ -390,4 +390,11 @@ class TestGc < Test::Unit::TestCase
       GC.enable unless disabled
     end
   end
+
+  def test_vm_object
+    assert_normal_exit <<-'end', '[Bug #12583]'
+      ObjectSpace.each_object{|o| o.singleton_class rescue 0}
+      ObjectSpace.each_object{|o| case o when Module then o.instance_methods end}
+    end
+  end
 end