diff options
Diffstat (limited to 'class.c')
-rw-r--r-- | class.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -1584,8 +1584,8 @@ rb_freeze_singleton_class(VALUE x) /* should not propagate to meta-meta-class, and so on */ if (!(RBASIC(x)->flags & FL_SINGLETON)) { VALUE klass = RBASIC_CLASS(x); - klass = RCLASS_ORIGIN(klass); - if (FL_TEST(klass, (FL_SINGLETON|FL_FREEZE)) == FL_SINGLETON) { + if (klass && (klass = RCLASS_ORIGIN(klass)) != 0 && + FL_TEST(klass, (FL_SINGLETON|FL_FREEZE)) == FL_SINGLETON) { OBJ_FREEZE_RAW(klass); } } |