French director Robert Guediguian poses as he arrives for the screening of the film "Une Histoire de Fou" (Don't tell me the Boy was Mad) at the 68th Cannes Film Festival in Cannes, southeastern France, on May 20, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

French actress Ariane Ascaride poses as she arrives for the screening of the film "Une Histoire de Fou" (Don't tell me the Boy was Mad) at the 68th Cannes Film Festival in Cannes, southeastern France, on May 20, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

French director Robert Guediguian poses as he arrives for the screening of the film "Une Histoire de Fou" (Don't tell me the Boy was Mad) at the 68th Cannes Film Festival in Cannes, southeastern France, on May 20, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

Lebanese actress Razane Jammal poses as she arrives for the screening of the film "Une Histoire de Fou" (Don't tell me the Boy was Mad) at the 68th Cannes Film Festival in Cannes, southeastern France, on May 20, 2015. AFP PHOTO / LOIC VENANCE

Lebanese actress Razane Jammal waves as she arrives for the screening of the film "Une Histoire de Fou" (Don't tell me the Boy was Mad) at the 68th Cannes Film Festival in Cannes, southeastern France, on May 20, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

French actress Ariane Ascaride poses as she arrives for the screening of the film "Une Histoire de Fou" (Don't tell me the Boy was Mad) at the 68th Cannes Film Festival in Cannes, southeastern France, on May 20, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

French actress Ariane Ascaride poses as she arrives for the screening of the film "Une Histoire de Fou" (Don't tell me the Boy was Mad) at the 68th Cannes Film Festival in Cannes, southeastern France, on May 20, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

French director Robert Guediguian (3rdR), French actress Ariane Ascaride (4thR) and Lebanese actress Razane Jammal (C) arrive for the screening of the film "Une Histoire de Fou" (Don't tell me the Boy was Mad) at the 68th Cannes Film Festival in Cannes, southeastern France, on May 20, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

French director Robert Guediguian (L) and Lebanese actress Razane Jammal pose as they arrive for the screening of the film "Une Histoire de Fou" (Don't tell me the Boy was Mad) at the 68th Cannes Film Festival in Cannes, southeastern France, on May 20, 2015. AFP PHOTO / LOIC VENANCE