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

safe.c

@@ -90,8 +90,8 @@ rb_secure(int level)
     if (level <= rb_safe_level()) {
 	ID caller_name = rb_frame_callee();
 	if (caller_name) {
-	    rb_raise(rb_eSecurityError, "Insecure operation `%s' at level %d",
-		     rb_id2name(caller_name), rb_safe_level());
+	    rb_raise(rb_eSecurityError, "Insecure operation `%"PRIsVALUE"' at level %d",
+		     rb_id2str(caller_name), rb_safe_level());
 	}
 	else {
 	    rb_raise(rb_eSecurityError, "Insecure operation at level %d",

test/ruby/test_dir.rb

@@ -304,4 +304,21 @@ def test_fileno
       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