--- nono/vm/thread.cpp	2026/04/29 17:05:28	1.1.1.3
+++ nono/vm/thread.cpp	2026/04/29 17:05:41	1.1.1.4
@@ -50,8 +50,11 @@ ThreadDevice::StartThread()
 	// スレッド起動
 	std::lock_guard<std::mutex> lock(thread_starter);
 
-	thread.reset(new std::thread(func));
+	try {
+		thread.reset(new std::thread(func));
+	} catch (...) { }
 	if ((bool)thread == false) {
+		warnx("Failed to initialize thread(%s) at %s", threadname, __method__);
 		return false;
 	}
 	return true;