re PR fortran/50420 ([Coarray] lcobound doesn't accept coarray subcomponents)

	PR fortran/50420
	* trans-intrinsic.c (walk_coarray): Allow subreferences after a
	coarray object reference.

From-SVN: r180146

gcc/fortran/ChangeLog

 2011-10-18  Mikael Morin  <mikael@gcc.gnu.org>
 
 	PR fortran/50420
+	* trans-intrinsic.c (walk_coarray): Allow subreferences after a
+	coarray object reference.
+
+2011-10-18  Mikael Morin  <mikael@gcc.gnu.org>
+
+	PR fortran/50420
 	* trans-array.c (gfc_walk_array_ref): Allow zero rank arrays
 	if they are coarrays.
 

gcc/fortran/trans-intrinsic.c

@@ -943,10 +943,16 @@ walk_coarray (gfc_expr *e)
       ss = gfc_get_array_ss (gfc_ss_terminator, e, 0, GFC_SS_SECTION);
 
       ref = e->ref;
-      while (ref->next)
-	ref = ref->next;
+      while (ref)
+	{
+	  if (ref->type == REF_ARRAY
+	      && ref->u.ar.codimen > 0)
+	    break;
+
+	  ref = ref->next;
+	}
 
-      gcc_assert (ref->type == REF_ARRAY && ref->u.ar.codimen > 0);
+      gcc_assert (ref != NULL);
       ref->u.ar.type = AR_FULL;
       ss->data.info.ref = ref;
     }