* object.c (rb_class_inherited_p): singleton class inherits Class

  rather than its object's class.  [ruby-dev:23690]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@6462 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/object.c b/object.c
index 2fb2bd063..f2c8c5f52 100644
--- a/object.c
+++ b/object.c
@@ -1257,6 +1257,11 @@ rb_class_inherited_p(mod, arg)
 	rb_raise(rb_eTypeError, "compared with non class/module");
     }
 
+    if (FL_TEST(mod, FL_SINGLETON)) {
+	if (RCLASS(mod)->m_tbl == RCLASS(arg)->m_tbl)
+	    return Qtrue;
+	mod = RBASIC(mod)->klass;
+    }
     while (mod) {
 	if (RCLASS(mod)->m_tbl == RCLASS(arg)->m_tbl)
 	    return Qtrue;