strict error check on vector manipulation
strict error check on vector manipulation

koba-e964/picrin,koba-e964/picrin,omasanori/picrin,ktakashi/picrin,leavesbnw/picrin,ktakashi/picrin,dcurrie/picrin,picrin-scheme/picrin,ktakashi/picrin,dcurrie/picrin,leavesbnw/picrin,omasanori/picrin,picrin-scheme/picrin,koba-e964/picrin,leavesbnw/picrin