app-emacs/cedet-1.0_pre4-r1

maybe there is a bug in cedet-1.0_pre4-r1,everytime I open a .c file,emacs will complain that "Autoloading failed to define function semantic-default-c-setup",and it occurs even when I create a semanticdb,so I try to downgrade cedet to 1.0_pre3-r2,no problems any more.