109c109
< void loadState(Checkpoint *cp);
---
> void loadState(CheckpointIn &cp) M5_ATTR_OVERRIDE;
115,117c115,116
< virtual void serialize(std::ostream &os);
< virtual void unserialize(Checkpoint *cp, const std::string &section);
<
---
> void serialize(CheckpointOut &cp) const M5_ATTR_OVERRIDE;
> void unserialize(CheckpointIn &cp) M5_ATTR_OVERRIDE;