* dir.c (dir_initialize): keep path in original encoding.

* error.c (syserr_initialize): prefer the encoding of message over
  locale.  [ruby-dev:45279][Bug #6071]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34794 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_io_m17n.rb

@@ -2356,4 +2356,15 @@ EOT
       end
     }
   end if /mswin|mingw/ =~ RUBY_PLATFORM
+
+  def test_error_nonascii
+    bug6071 = '[ruby-dev:45279]'
+    paths = ["\u{3042}".encode("sjis"), "\u{ff}".encode("iso-8859-1")]
+    encs = with_tmpdir {
+      paths.map {|path|
+        open(path) rescue $!.message.encoding
+      }
+    }
+    assert_equal(paths.map(&:encoding), encs, bug6071)
+  end
 end