--- rpl/src/instructions_d5.c	2010/04/27 15:53:36	1.12
+++ rpl/src/instructions_d5.c	2010/04/28 07:05:38	1.14
@@ -1522,8 +1522,8 @@ instruction_detach(struct_processus *s_e
 		(*s_etat_processus).nombre_interruptions_non_affectees = 0;
 		(*s_etat_processus).processus_detache = d_vrai;
 
-		liberation(s_etat_processus, (*s_etat_processus).on_exit);
-		(*s_etat_processus).on_exit = NULL;
+		liberation(s_etat_processus, (*s_etat_processus).at_exit);
+		(*s_etat_processus).at_exit = NULL;
 
 		for(i = 0; i < d_NOMBRE_INTERRUPTIONS; i++)
 		{
@@ -1876,16 +1876,19 @@ instruction_detach(struct_processus *s_e
 				}
 				else
 				{
-					if (evaluation(s_etat_processus,
-							(*s_etat_processus).on_exit, 'E') == d_erreur)
+					if ((*s_etat_processus).at_exit != NULL)
 					{
-						(*s_etat_processus).erreur_execution =
-								d_ex_erreur_evaluation;
+						if (evaluation(s_etat_processus,
+								(*s_etat_processus).at_exit, 'E') == d_erreur)
+						{
+							(*s_etat_processus).erreur_execution =
+									d_ex_erreur_evaluation;
+						}
 					}
 				}
 
 				liberation(s_etat_processus, s_copie);
-				liberation(s_etat_processus, (*s_etat_processus).on_exit);
+				liberation(s_etat_processus, (*s_etat_processus).at_exit);
 			}
 		}