diff options
Diffstat (limited to 'class.c')
-rw-r--r-- | class.c | 7 |
1 files changed, 6 insertions, 1 deletions
@@ -152,7 +152,12 @@ rb_make_metaclass(obj, super) RCLASS(klass)->super = RBASIC(rb_class_real(RCLASS(obj)->super))->klass; } else { - RBASIC(klass)->klass = RBASIC(rb_class_real(super))->klass; + VALUE metasuper = RBASIC(rb_class_real(super))->klass; + + /* metaclass of a superclass may be NULL at boot time */ + if (metasuper) { + RBASIC(klass)->klass; + } } return klass; |