[gcc r14-1772] ada: Recognize iterated_component_association as potentially unevaluated

[Marc Poulhi?s <dkm@gcc.gnu.org>]

https://gcc.gnu.org/g:0f1e602e9e34e59e1cab44ecf3da72c450a48267

commit r14-1772-g0f1e602e9e34e59e1cab44ecf3da72c450a48267
Author: Piotr Trojanek <trojanek@adacore.com>
Date:   Wed May 3 11:39:52 2023 +0200

    ada: Recognize iterated_component_association as potentially unevaluated
    
    Routine Is_Potentially_Unevaluated was written for Ada 2012, but now we
    use it for Ada 2022 as well, so it must recognize iterated component
    associations (which were added by Ada 2022) as an array component
    association.
    
    gcc/ada/
    
            * sem_util.adb (Is_Potentially_Unevaluated): Recognize iterated
            component association as potentially unevaluated.

Diff:
---
 gcc/ada/sem_util.adb | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index b82978ba99e..23668f1bec5 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -19566,7 +19566,8 @@ package body Sem_Util is
          elsif Nkind (Par) = N_Quantified_Expression then
             return Expr = Condition (Par);
 
-         elsif Nkind (Par) = N_Component_Association
+         elsif Nkind (Par) in N_Component_Association
+                            | N_Iterated_Component_Association
            and then Expr = Expression (Par)
            and then Nkind (Parent (Par))
               in N_Aggregate | N_Delta_Aggregate | N_Extension_Aggregate
@@ -19708,10 +19709,15 @@ package body Sem_Util is
          then
             return True;
 
-         --  For component associations continue climbing; it may be part of
-         --  an array aggregate.
+         --  For component associations continue climbing; it may be part of an
+         --  array aggregate. For iterated component association we know that
+         --  it belongs to an array aggreate, but only its expression is
+         --  potentially unevaluated, not discrete choice list or iterator
+         --  specification.
 
-         elsif Nkind (Par) = N_Component_Association then
+         elsif Nkind (Par) in N_Component_Association
+                            | N_Iterated_Component_Association
+         then
             null;
 
          --  If the context is not an expression, or if is the result of