fix memory leak
ss
exception handler
rollback the bad commit and start new cesk machine
temp
object creation
working on value & value set
hashcodes
cc
nm
haha
copy-on-write for frame store
finish store copy-on-write
sss
ss
doing: GC, done: COW, TODO: frame & set
bl
start cesk_set.h
TODO: set join and push
Wall and elimiate all warnings