ada: Recognize iterated_component_association as repeatedly evaluated

As iterated_component_association is an array_component_association
(because of a grammar rule Ada 2022 RM 4.3.3(5/5)), its expression is
repeatedly evaluated (because of Ada 2022 RM 6.1.1(22.14/5)).

With this patch we will now get errors for both conjuncts in this code,
which have semantically equivalent array aggregates that use an ordinary
component association and iterated component association.

  procedure Iter (S : String)
    with Post => String'(for J in 1 .. 3 => S (S'First)'Old) =
                 String'(         1 .. 3 => S (S'First)'Old);

gcc/ada/

	* sem_util.adb (Is_Repeatedly_Evaluated): Recognize iterated component
	association as repeatedly evaluated.

diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 23668f1bec56a32f27d591f2d1c16a934132a615..3fd3eb45f334fe9186f41372ca95a269d20c23ae 100644 (file)
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -30768,7 +30768,8 @@ package body Sem_Util is
                   --    array_component_association or of
                   --    a container_element_associatiation.
 
-                  if Nkind (Par) = N_Component_Association
+                  if Nkind (Par) in N_Component_Association
+                                  | N_Iterated_Component_Association
                     and then Trailer = Expression (Par)
                   then
                      --  determine whether Par is part of an array aggregate