load.c: keep encoding of feature name

* file.c (rb_find_file_ext_safe, rb_find_file_safe): default to
  US-ASCII for encdb and transdb.
* load.c (search_required): keep encoding of feature name.  set
  loading path to filesystem encoding.  [Bug #6377][ruby-core:44750]
* ruby.c (add_modules, require_libraries): assume default external
  encoding as well as ARGV.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36800 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 17 insertions, 0 deletions

diff --git a/test/ruby/test_require.rb b/test/ruby/test_require.rb
index 9286994e22..1d135f0e6b 100644
--- a/test/ruby/test_require.rb
+++ b/test/ruby/test_require.rb
@@ -418,4 +418,21 @@ class TestRequire < Test::Unit::TestCase
     $".delete(path)
     tmp.close(true) if tmp
   end
+
+  def test_loaded_features_encoding
+    bug6377 = '[ruby-core:44750]'
+    loadpath = $:.dup
+    features = $".dup
+    $".clear
+    $:.clear
+    Dir.mktmpdir {|tmp|
+      $: << tmp
+      open(File.join(tmp, "foo.rb"), "w") {}
+      require "foo"
+      assert_equal(tmp.encoding, $"[0].encoding, bug6377)
+    }
+  ensure
+    $:.replace(loadpath)
+    $".replace(features)
+  end
 end