--- nono/vm/lunafb.cpp	2026/04/29 17:05:37	1.1.1.8
+++ nono/vm/lunafb.cpp	2026/04/29 17:05:42	1.1.1.9
@@ -66,6 +66,10 @@ LunafbDevice::~LunafbDevice()
 bool
 LunafbDevice::Init()
 {
+	if (inherited::Init() == false) {
+		return false;
+	}
+
 	auto bt45x = GetBT45xDevice();
 	nplane = bt45x->GetPlaneCount();
 
@@ -73,7 +77,12 @@ LunafbDevice::Init()
 	fcset_end = fcset0base + 0x40000 * nplane;
 
 	// プレーン数によってメモリを確保
-	mem.reset(new uint8 [0x40000 * nplane]);
+	size_t memsize = 0x40000 * nplane;
+	mem.reset(new(std::nothrow) uint8 [memsize]);
+	if ((bool)mem == false) {
+		warnx("Cannot allocate %zu bytes at %s", memsize, __method__);
+		return false;
+	}
 
 	// ホストパレットを取得。
 	palette = &(bt45x->GetHostPalette())[0];