From: Gary Dismukes <dismu...@adacore.com>
When an Address attribute applies to an object that is a dereference of
an access value whose type has aspect Designated_Storage_Model, the
attribute will now be treated as having the address type associated
with the Storage_Model_Type of the access type's associated Storage_Model
object instead of being of type System.Address.
gcc/ada/
* sem_attr.adb (Analyze_Attribute, Attribute_Address): In the case
where the attribute's prefix is a dereference of a value of an
access type that has aspect Designated_Storage_Model (or a
renaming of such a dereference), set the attribute's type to the
corresponding Storage_Model_Type's associated address type rather
than System.Address.
Tested on x86_64-pc-linux-gnu, committed on master.
---
gcc/ada/sem_attr.adb | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
diff --git a/gcc/ada/sem_attr.adb b/gcc/ada/sem_attr.adb
index 4c76b9344c2..cca6f6f8c7d 100644
--- a/gcc/ada/sem_attr.adb
+++ b/gcc/ada/sem_attr.adb
@@ -3430,7 +3430,34 @@ package body Sem_Attr is
Check_E0;
Address_Checks;
Check_Not_Incomplete_Type;
- Set_Etype (N, RTE (RE_Address));
+
+ -- If the prefix is a dereference of a value whose associated access
+ -- type has been specified with aspect Designated_Storage_Model, then
+ -- use the associated Storage_Model_Type's address type as the type
+ -- of the attribute. Otherwise we use System.Address as usual. This
+ -- isn't normally legit for a predefined attribute, but this is for
+ -- our own extension to addressing and currently requires extensions
+ -- to be enabled (such as with -gnatX0).
+
+ declare
+ Prefix_Obj : constant Node_Id := Get_Referenced_Object (P);
+ Addr_Type : Entity_Id := RTE (RE_Address);
+ begin
+ if Nkind (Prefix_Obj) = N_Explicit_Dereference then
+ declare
+ P_Type : constant Entity_Id := Etype (Prefix (Prefix_Obj));
+
+ use Storage_Model_Support;
+ begin
+ if Has_Designated_Storage_Model_Aspect (P_Type) then
+ Addr_Type := Storage_Model_Address_Type
+ (Storage_Model_Object (P_Type));
+ end if;
+ end;
+ end if;
+
+ Set_Etype (N, Addr_Type);
+ end;
------------------
-- Address_Size --
--
2.34.1
