522,523c522,523
< void serialize(CheckpointOut &cp) const M5_ATTR_OVERRIDE;
< void unserialize(CheckpointIn &cp) M5_ATTR_OVERRIDE;
---
> void serialize(CheckpointOut &cp) const override;
> void unserialize(CheckpointIn &cp) override;
525c525
< void drainResume() M5_ATTR_OVERRIDE;
---
> void drainResume() override;