--- rpl/src/instructions_s1.c	2016/03/09 17:49:12	1.83
+++ rpl/src/instructions_s1.c	2016/03/09 22:11:27	1.84
@@ -3690,7 +3690,6 @@ instruction_syseval(struct_processus *s_
 
 		verrouillage_threads_concurrents(s_etat_processus);
 		pid = fork();
-		deverrouillage_threads_concurrents(s_etat_processus);
 
 		if (pid < 0)
 		{
@@ -3822,6 +3821,8 @@ instruction_syseval(struct_processus *s_
 		}
 		else
 		{
+			deverrouillage_threads_concurrents(s_etat_processus);
+
 			if (close(pipes_entree[0]) != 0)
 			{
 				(*s_etat_processus).erreur_systeme = d_es_processus;