verify parameters of Duel.AnnounceCard

libduel.cpp

@@ -3634,6 +3634,34 @@ int32 scriptlib::duel_announce_card(lua_State * L) {
 		for(int32 i = 2; i <= lua_gettop(L); ++i)
 			pduel->game_field->core.select_options.push_back((uint32)lua_tointeger(L, i));
 	}
+	int32 stack_size = 0;
+	for(auto& it : pduel->game_field->core.select_options) {
+		switch(it) {
+		case OPCODE_ADD:
+		case OPCODE_SUB:
+		case OPCODE_MUL:
+		case OPCODE_DIV:
+		case OPCODE_AND:
+		case OPCODE_OR:
+			stack_size -= 1;
+			break;
+		case OPCODE_NEG:
+		case OPCODE_NOT:
+		case OPCODE_ISCODE:
+		case OPCODE_ISSETCARD:
+		case OPCODE_ISTYPE:
+		case OPCODE_ISRACE:
+		case OPCODE_ISATTRIBUTE:
+			break;
+		default:
+			stack_size += 1;
+			break;
+		}
+		if(stack_size <= 0)
+			break;
+	}
+	if(stack_size != 1)
+		return luaL_error(L, "Parameters are invalid.");
 	pduel->game_field->add_process(PROCESSOR_ANNOUNCE_CARD, 0, 0, 0, playerid, 0);
 	return lua_yieldk(L, 0, (lua_KContext)pduel, [](lua_State *L, int32 status, lua_KContext ctx) {
 		duel* pduel = (duel*)ctx;