diff options
| -rw-r--r-- | src/class.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/class.c b/src/class.c index 6b9f246e9..40335e039 100644 --- a/src/class.c +++ b/src/class.c @@ -690,6 +690,9 @@ 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) { + mrb_raise(mrb, E_ARGUMENT_ERROR, "cyclic include detected"); + } while (p) { if (c != p && p->tt == MRB_TT_CLASS) { superclass_seen = 1; |