Make cursor underflow when positioned beyond the end of the buffer
Make cursor underflow when positioned beyond the end of the buffer

aclements/libelfin,aclements/libelfin,aclements/libelfin,abenkhadra/libelfin,abenkhadra/libelfin,abenkhadra/libelfin,tempbottle/libelfin,abenkhadra/libelfin,tempbottle/libelfin,aclements/libelfin