1 files changed, 11 insertions, 0 deletions
diff --git a/test/resolv/test_dns.rb b/test/resolv/test_dns.rb
index 0d9565ef68..07396fb177 100644
--- a/test/resolv/test_dns.rb
+++ b/test/resolv/test_dns.rb
@@ -1,6 +1,7 @@
 require 'test/unit'
 require 'resolv'
 require 'socket'
+require 'tempfile'
 
 class TestResolvDNS < Test::Unit::TestCase
   def setup
@@ -150,4 +151,14 @@ class TestResolvDNS < Test::Unit::TestCase
     }
   end
 
+  def test_invalid_byte_comment
+    bug9273 = '[ruby-core:59239] [Bug #9273]'
+    Tempfile.open('resolv_test_dns_') do |tmpfile|
+      tmpfile.print("\xff\x00\x40")
+      tmpfile.close
+      assert_nothing_raised(ArgumentError, bug9273) do
+        Resolv::DNS::Config.parse_resolv_conf(tmpfile.path)
+      end
+    end
+  end
 end