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

	PR fortran/50420
	* trans.c (gfc_build_array_ref): If type is not an array, check that
	there is nothing to do, and do nothing.

From-SVN: r180152

gcc/fortran/ChangeLog

 2011-10-18  Mikael Morin  <mikael@gcc.gnu.org>
 
 	PR fortran/50420
+	* trans.c (gfc_build_array_ref): If type is not an array, check that
+	there is nothing to do, and do nothing.
+
+2011-10-18  Mikael Morin  <mikael@gcc.gnu.org>
+
+	PR fortran/50420
 	* trans-types.c (gfc_build_array_type): Don't force lower bound to one
 	in the deferred case.
 

gcc/fortran/trans.c

@@ -323,7 +323,14 @@ gfc_build_array_ref (tree base, tree offset, tree decl)
       return fold_convert (TYPE_MAIN_VARIANT (type), base);
     }
 
-  gcc_assert (TREE_CODE (type) == ARRAY_TYPE);
+  /* Scalar coarray, there is nothing to do.  */
+  if (TREE_CODE (type) != ARRAY_TYPE)
+    {
+      gcc_assert (decl == NULL_TREE);
+      gcc_assert (integer_zerop (offset));
+      return base;
+    }
+
   type = TREE_TYPE (type);
 
   if (DECL_P (base))