diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/class.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/class.c b/src/class.c index ea58265d7..852c88757 100644 --- a/src/class.c +++ b/src/class.c @@ -741,7 +741,7 @@ mrb_include_module(mrb_state *mrb, struct RClass *c, struct RClass *m) struct RClass *p = c, *ic; int superclass_seen = 0; - if (c->mt == m->mt) { + if (c->mt && c->mt == m->mt) { mrb_raise(mrb, E_ARGUMENT_ERROR, "cyclic include detected"); } while (p) { |