re PR libfortran/83613 (Executing gfortran.dg/inquire_internal.f90 hangs on darwin after r255621)

2017-12-29  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

        PR libgfortran/83613
        * io/unit.c (init_units): Don't forget to unlock the unit locks
        after being inserted.

From-SVN: r256035

libgfortran/ChangeLog

 2017-12-29  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
+	PR libgfortran/83613
+	* io/unit.c (init_units): Don't forget to unlock the unit locks
+	after being inserted.
+
+2017-12-29  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
 	PR libgfortran/83560
 	* io/write.c (write_integer): Modify to use write_decimal.
 	For namelist mode, suppress leading blanks and emit them as

libgfortran/io/unit.c

@@ -707,7 +707,9 @@ init_units (void)
     }
   /* The default internal units.  */
   u = insert_unit (GFC_INTERNAL_UNIT);
+  __gthread_mutex_unlock (&u->lock);
   u = insert_unit (GFC_INTERNAL_UNIT4);
+  __gthread_mutex_unlock (&u->lock);
 }