[gcc r12-3805] [Ada] Fix access to predicated parent in Itype

[Pierre-Marie de Rodat]

https://gcc.gnu.org/g:cbf1ffe1252430f0db0db18b0b695799bb31c242

commit r12-3805-gcbf1ffe1252430f0db0db18b0b695799bb31c242
Author: Yannick Moy <moy@adacore.com>
Date:   Thu Jul 15 14:31:29 2021 +0200

    [Ada] Fix access to predicated parent in Itype
    
    gcc/ada/
    
            * sem_ch13.adb (Build_Predicate_Functions): Access
            Predicated_Parent only on subtypes.

Diff:
---
 gcc/ada/sem_ch13.adb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gcc/ada/sem_ch13.adb b/gcc/ada/sem_ch13.adb
index 8cb3b425db9..2a5e86d929c 100644
--- a/gcc/ada/sem_ch13.adb
+++ b/gcc/ada/sem_ch13.adb
@@ -10191,6 +10191,9 @@ package body Sem_Ch13 is
         or else
           (Is_Itype (Typ)
            and then not Comes_From_Source (Typ)
+           and then Ekind (Typ) in E_Array_Subtype
+                                 | E_Record_Subtype
+                                 | E_Record_Subtype_With_Private
            and then Present (Predicated_Parent (Typ)))
       then
          return;