--- rpl/src/rpl.h	2017/07/02 22:28:20	1.308
+++ rpl/src/rpl.h	2017/08/03 15:13:04	1.314
@@ -718,6 +718,12 @@ pid_t debug_fork();
 		pthread_self(), #mutex, mutex, __FUNCTION__, __LINE__), \
 		fflush(stdout), \
 		pthread_mutex_unlock(mutex)
+#	define pthread_mutex_trylock(mutex) uprintf("[%d-%llu] Mutex %s (%p) " \
+		"trylocking at " \
+		"%s() line #%d\n", (int) getpid(), (unsigned long long) \
+		pthread_self(), #mutex, mutex, __FUNCTION__, __LINE__), \
+		fflush(stdout), \
+		pthread_mutex_trylock(mutex)
 #endif
 
 
@@ -1779,6 +1785,7 @@ typedef struct instruction_externe
 	unsigned char		*nom;
 	unsigned char		*nom_bibliotheque;
 	void				*descripteur_bibliotheque;
+	integer8			position_fleche;
 } struct_instruction_externe;
 
 
@@ -3447,7 +3454,8 @@ logical1 retrait_variable_statique(struc
 logical1 retrait_variables_statiques_locales(
 		struct_processus *s_etat_processus);
 logical1 sequenceur(struct_processus *s_etat_processus);
-logical1 sequenceur_optimise(struct_processus *s_etat_processus);
+logical1 sequenceur_optimise(struct_processus *s_etat_processus,
+		struct_liste_chainee *l_bibliotheques);
 #endif
 
 /*