1 files changed, 20 insertions, 0 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 8e09df48f5..51b67f37f5 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2164,6 +2164,26 @@ End
     }
   end
 
+  bug11320 = '[ruby-core:69780] [Bug #11320]'
+  ["UTF-8", "EUC-JP", "Shift_JIS"].each do |enc|
+    define_method("test_reopen_nonascii(#{enc})") do
+      mkcdtmpdir do
+        fname = "\u{30eb 30d3 30fc}".encode(enc)
+        File.write(fname, '')
+        assert_file.exist?(fname)
+        stdin = $stdin.dup
+        begin
+          assert_nothing_raised(Errno::ENOENT, enc) {
+            $stdin.reopen(fname, 'r')
+          }
+        ensure
+          $stdin.reopen(stdin)
+          stdin.close
+        end
+      end
+    end
+  end
+
   def test_foreach
     a = []
     IO.foreach("|" + EnvUtil.rubybin + " -e 'puts :foo; puts :bar; puts :baz'") {|x| a << x }