range.c: class name encoding

* range.c (range_bsearch): preserve encoding of class name in an
  exception message.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49228 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

range.c

@@ -608,9 +608,9 @@ range_bsearch(VALUE range)
 	    smaller = cmp < 0; \
 	} \
 	else { \
-	    rb_raise(rb_eTypeError, "wrong argument type %s" \
-		" (must be numeric, true, false or nil)", \
-		rb_obj_classname(v)); \
+	    rb_raise(rb_eTypeError, "wrong argument type %"PRIsVALUE \
+		     " (must be numeric, true, false or nil)", \
+		     rb_obj_class(v)); \
 	} \
     } while (0)
 

test/ruby/test_range.rb

@@ -378,6 +378,10 @@ class TestRange < Test::Unit::TestCase
     assert_raise(TypeError) do
       (1..42).bsearch{ "not ok" }
     end
+    c = eval("class C\u{309a 26a1 26c4 1f300};self;end")
+    assert_raise_with_message(TypeError, /C\u{309a 26a1 26c4 1f300}/) do
+      (1..42).bsearch {c.new}
+    end
     assert_equal (1..42).bsearch{}, (1..42).bsearch{false}
   end