[gcc r13-1625] [Ada] Accept aspect Yield on subprogram bodies acting as specs

[Pierre-Marie de Rodat <pmderodat@gcc.gnu.org>]

https://gcc.gnu.org/g:a54ad45a63182bf6d1873ed55d641769638e4c8f

commit r13-1625-ga54ad45a63182bf6d1873ed55d641769638e4c8f
Author: Piotr Trojanek <trojanek@adacore.com>
Date:   Tue Jan 11 22:25:13 2022 +0100

    [Ada] Accept aspect Yield on subprogram bodies acting as specs
    
    A small fix for the aspect Yield defined in AI12-0279 for Ada 2022, to
    accept aspect given for a subprogram body which acts as its own spec.
    
    For example:
    
       procedure Switch with Yield => True is
       begin
          ...
       end Switch;
    
    gcc/ada/
    
            * sem_ch13.adb (Analyze_Aspect_Yield): Look at the entity kind,
            not at the declaration kind.

Diff:
---
 gcc/ada/sem_ch13.adb | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/gcc/ada/sem_ch13.adb b/gcc/ada/sem_ch13.adb
index bb654abe412..c6683108540 100644
--- a/gcc/ada/sem_ch13.adb
+++ b/gcc/ada/sem_ch13.adb
@@ -2724,13 +2724,11 @@ package body Sem_Ch13 is
                Expr_Value : Boolean := False;
 
             begin
-               --  Check valid declarations for 'Yield
+               --  Check valid entity for 'Yield
 
-               if Nkind (N) in N_Abstract_Subprogram_Declaration
-                             | N_Entry_Declaration
-                             | N_Generic_Subprogram_Declaration
-                             | N_Subprogram_Declaration
-                             | N_Formal_Subprogram_Declaration
+               if (Is_Subprogram (E)
+                     or else Is_Generic_Subprogram (E)
+                     or else Is_Entry (E))
                  and then not Within_Protected_Type (E)
                then
                   null;