--- rpl/src/instructions_s1.c	2013/04/01 15:29:37	1.67
+++ rpl/src/instructions_s1.c	2016/03/09 22:11:27	1.84
@@ -1,7 +1,7 @@
 /*
 ================================================================================
-  RPL/2 (R) version 4.1.14
-  Copyright (C) 1989-2013 Dr. BERTRAND Joël
+  RPL/2 (R) version 4.1.25
+  Copyright (C) 1989-2016 Dr. BERTRAND Joël
 
   This file is part of RPL/2.
 
@@ -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)
 		{
@@ -3735,6 +3734,8 @@ instruction_syseval(struct_processus *s_
 		}
 		else if (pid == 0)
 		{
+			(*s_etat_processus).erreur_systeme = d_es;
+
 			if (close(pipes_entree[1]) != 0)
 			{
 				(*s_etat_processus).erreur_systeme = d_es_processus;
@@ -3820,6 +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;