safe.c: preserve encoding

* safe.c (rb_secure): preserve encoding of the called method name
  in error messages.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48571 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 17 insertions, 0 deletions

diff --git a/test/ruby/test_dir.rb b/test/ruby/test_dir.rb
index ee1210cc37..03c62da547 100644
--- a/test/ruby/test_dir.rb
+++ b/test/ruby/test_dir.rb
@@ -304,4 +304,21 @@ class TestDir < Test::Unit::TestCase
       end
     }
   end
+
+  def test_insecure_chdir
+    assert_raise(SecurityError) do
+      proc do
+        $SAFE=3
+        Dir.chdir("/")
+      end.call
+    end
+    m = "\u{79fb 52d5}"
+    d = Class.new(Dir) {singleton_class.class_eval {alias_method m, :chdir}}
+    assert_raise_with_message(SecurityError, /#{m}/) do
+      proc do
+        $SAFE=3
+        d.__send__(m, "/")
+      end.call
+    end
+  end
 end