[gcc r15-678] ada: Fix list of attributes defined by Ada 2012

[gcc r15-678] ada: Fix list of attributes defined by Ada 2012

[Marc Poulhi?s]

https://gcc.gnu.org/g:95a13b096df2aa6dc096f65846d6c19067552792

commit r15-678-g95a13b096df2aa6dc096f65846d6c19067552792
Author: Piotr Trojanek <trojanek@adacore.com>
Date:   Mon Mar 25 22:52:14 2024 +0100

    ada: Fix list of attributes defined by Ada 2012
    
    Recognize references to attributes Old, Overlaps_Storage and Result as
    language-defined in Ada 2012 and implementation-defined in earlier
    versions of Ada. Other attributes introduced by Ada 2012 RM are
    correctly categorized.
    
    This change only affects code with restriction
    No_Implementation_Attributes.
    
    gcc/ada/
    
            * sem_attr.adb (Attribute_12): Add attributes Old,
            Overlaps_Storage and Result.

Diff:
---
 gcc/ada/sem_attr.adb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gcc/ada/sem_attr.adb b/gcc/ada/sem_attr.adb
index 414224e86b69..df52229b6aaf 100644
--- a/gcc/ada/sem_attr.adb
+++ b/gcc/ada/sem_attr.adb
@@ -170,7 +170,10 @@ package body Sem_Attr is
      (Attribute_First_Valid                  |
       Attribute_Has_Same_Storage             |
       Attribute_Last_Valid                   |
-      Attribute_Max_Alignment_For_Allocation => True,
+      Attribute_Max_Alignment_For_Allocation |
+      Attribute_Old                          |
+      Attribute_Overlaps_Storage             |
+      Attribute_Result                       => True,
       others                                 => False);
 
    --  The following array is the list of attributes defined in the Ada 2022