ENH: Put warning to avoid self-referencing
ENH: Put warning to avoid self-referencing

cpatrick/CDash,cpatrick/CDash,jcfr/CDash,cpatrick/CDash,jcfr/CDash,jcfr/CDash,jcfr/CDash,cpatrick/CDash,cpatrick/CDash,cpatrick/CDash,jcfr/CDash,jcfr/CDash