Limit ecall() recursion levels; fix
@@ -292,6 +292,9 @@ ecall(mrb_state *mrb, int i)
ptrdiff_t nstk;
if (i<0) return;
+ if (mrb->c->ci - mrb->c->cibase > MRB_FUNCALL_DEPTH_MAX) {
+ mrb_exc_raise(mrb, mrb_obj_value(mrb->stack_err));
+ }
p = mrb->c->ensure[i];
if (!p) return;
if (mrb->c->ci->eidx > i)
