[gc] base header size is 1, not 0
[gc] base header size is 1, not 0

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