--- nono/vm/prom.h	2026/04/29 17:04:36	1.1.1.1
+++ nono/vm/prom.h	2026/04/29 17:04:45	1.1.1.3
@@ -15,7 +15,7 @@ class PROMDevice
 	using inherited = ROMDevice;
  public:
 	PROMDevice();
-	~PROMDevice() override;
+	virtual ~PROMDevice() override;
 
 	bool Init() override;
 	bool PowerOn() override;
@@ -28,7 +28,7 @@ class PROMDevice
 	bool InitLuna();
 	bool InitLuna88k();
 
-	uint64 start_time = 0;				// パフォーマンス測定用
+	uint64 start_time {};			// パフォーマンス測定用
 };
 
 extern std::unique_ptr<PROMDevice> gPROM;