Add more checks before accessing struct pointer; ref
@@ -147,11 +147,13 @@ static mrb_value
mrb_struct_set_m(mrb_state *mrb, mrb_value obj)
{
mrb_int i = mrb_fixnum(mrb_proc_cfunc_env_get(mrb, 0));
- mrb_value *ptr = RSTRUCT_PTR(obj);
+ mrb_value *ptr;
mrb_value val;
+
mrb_get_args(mrb, "o", &val);
mrb_struct_modify(mrb, obj);
- if (i >= RSTRUCT_LEN(obj)) {
+ ptr = RSTRUCT_PTR(obj);
+ if (ptr == NULL || i >= RSTRUCT_LEN(obj)) {
mrb_ary_set(mrb, obj, i, val);
}
else {
