1 files changed, 13 insertions, 0 deletions
diff --git a/test/rdoc/test_rdoc_parser_c.rb b/test/rdoc/test_rdoc_parser_c.rb
index b8bdbca7fd..3d30d767df 100644
--- a/test/rdoc/test_rdoc_parser_c.rb
+++ b/test/rdoc/test_rdoc_parser_c.rb
@@ -1630,6 +1630,19 @@ Init_IO(void) {
     assert read_method.singleton
   end
 
+  def test_define_method_dynamically
+    content = <<-EOF
+void
+Init_foo(void)
+{
+    rb_define_singleton_method(obj, "foo", foo, -1);
+}
+    EOF
+
+    klass = util_get_class content, 'obj'
+    assert_nil klass
+  end
+
   def test_define_method_with_prototype
     content = <<-EOF
 static VALUE rb_io_s_read(int, VALUE*, VALUE);