[COMMITTED] ada: Bugbox compiling Constrained_Protected_Object'Image

["Marc Poulhiès" <poulhies@adacore.com>]

From: Steve Baird <baird@adacore.com>

In some cases, a bugbox is generated when compiling an example
that references X'Image, where X is a constrained object of a
discriminated protected type.

gcc/ada/

	* sem_ch3.adb (Constrain_Corresponding_Record): When copying
	information from the unconstrained record type to a newly
	constructed constrained record subtype, the
	Direct_Primitive_Operations attribute must be copied.

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/sem_ch3.adb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/ada/sem_ch3.adb b/gcc/ada/sem_ch3.adb
index ed337f5408e..042ace01724 100644
--- a/gcc/ada/sem_ch3.adb
+++ b/gcc/ada/sem_ch3.adb
@@ -14325,6 +14325,8 @@ package body Sem_Ch3 is
       Set_Is_Constrained    (T_Sub, True);
       Set_First_Entity      (T_Sub, First_Entity (Corr_Rec));
       Set_Last_Entity       (T_Sub, Last_Entity  (Corr_Rec));
+      Set_Direct_Primitive_Operations
+        (T_Sub, Direct_Primitive_Operations (Corr_Rec));
 
       if Has_Discriminants (Prot_Subt) then -- False only if errors.
          Set_Discriminant_Constraint
-- 
2.40.0