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* [Bug ada/108157] New: [12/13 regression] object subtype doesn't statically match designated subtype
@ 2022-12-17 20:00 simon at pushface dot org
2022-12-19 8:04 ` [Bug ada/108157] " rguenth at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: simon at pushface dot org @ 2022-12-17 20:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108157
Bug ID: 108157
Summary: [12/13 regression] object subtype doesn't statically
match designated subtype
Product: gcc
Version: 12.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: simon at pushface dot org
CC: dkm at gcc dot gnu.org
Target Milestone: ---
Created attachment 54118
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54118&action=edit
Demonstrator
The attached code fails with
$ /opt/gcc-12.2.0/bin/gcc -c g-socser.adb
g-socser.adb:13:22: error: object subtype must statically match designated
subtype
The relevant part of g-socser.adb:
9. Connect_Socket
10. (Socket => Client.Socket,
11. Server => Client.Client_Address,
12. Timeout => 0.0,
13. Selector => Listener.Selector'Unchecked_Access,
|
>>> error: object subtype must statically match designated subtype
The relevant part of g-socser.ads:
20. type Connections_Server is tagged limited record
21. -- limited because Selector_Type is limited
22. Selector : aliased Selector_Type;
23. end record;
The relevant part of the GNAT standard library GNAT.Sockets is
procedure Connect_Socket
(Socket : Socket_Type;
Server : Sock_Addr_Type;
Timeout : Selector_Duration;
Selector : access Selector_Type := null;
Status : out Selector_Status);
and it’s the same Selector_Type all the way.
I’ve looked at Annotated Ada Reference Manual (Ada 2022 Draft 34) 4.9.1[1] and
I can’t see what the problem is.
Note, I don’t know why the code uses 'Unchecked_Access; 'Access gives the same
error, 'Unrestricted_Access compiles OK.
[1] http://www.ada-auth.org/standards/22aarm/html/AA-4-9-1.html
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug ada/108157] [12/13 regression] object subtype doesn't statically match designated subtype
2022-12-17 20:00 [Bug ada/108157] New: [12/13 regression] object subtype doesn't statically match designated subtype simon at pushface dot org
@ 2022-12-19 8:04 ` rguenth at gcc dot gnu.org
2023-05-08 12:26 ` [Bug ada/108157] [12/13/14 " rguenth at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-12-19 8:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108157
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |12.3
Priority|P3 |P4
Keywords| |rejects-valid
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug ada/108157] [12/13/14 regression] object subtype doesn't statically match designated subtype
2022-12-17 20:00 [Bug ada/108157] New: [12/13 regression] object subtype doesn't statically match designated subtype simon at pushface dot org
2022-12-19 8:04 ` [Bug ada/108157] " rguenth at gcc dot gnu.org
@ 2023-05-08 12:26 ` rguenth at gcc dot gnu.org
2023-05-10 11:07 ` simon at pushface dot org
2023-05-11 12:33 ` ebotcazou at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-05-08 12:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108157
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|12.3 |12.4
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 12.3 is being released, retargeting bugs to GCC 12.4.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug ada/108157] [12/13/14 regression] object subtype doesn't statically match designated subtype
2022-12-17 20:00 [Bug ada/108157] New: [12/13 regression] object subtype doesn't statically match designated subtype simon at pushface dot org
2022-12-19 8:04 ` [Bug ada/108157] " rguenth at gcc dot gnu.org
2023-05-08 12:26 ` [Bug ada/108157] [12/13/14 " rguenth at gcc dot gnu.org
@ 2023-05-10 11:07 ` simon at pushface dot org
2023-05-11 12:33 ` ebotcazou at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: simon at pushface dot org @ 2023-05-10 11:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108157
--- Comment #2 from simon at pushface dot org ---
Still present in 13.1.0.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug ada/108157] [12/13/14 regression] object subtype doesn't statically match designated subtype
2022-12-17 20:00 [Bug ada/108157] New: [12/13 regression] object subtype doesn't statically match designated subtype simon at pushface dot org
` (2 preceding siblings ...)
2023-05-10 11:07 ` simon at pushface dot org
@ 2023-05-11 12:33 ` ebotcazou at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2023-05-11 12:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108157
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
CC| |ebotcazou at gcc dot gnu.org
--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
-- Ada 2005 (AI-363): Require static matching when designated
-- type has discriminants and a constrained partial view, since
-- in general objects of such types are mutable, so we can't
-- allow the access value to designate a constrained object
-- (because access values must be assumed to designate mutable
-- objects when designated type does not impose a constraint).
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2023-05-11 12:33 UTC | newest]
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2022-12-17 20:00 [Bug ada/108157] New: [12/13 regression] object subtype doesn't statically match designated subtype simon at pushface dot org
2022-12-19 8:04 ` [Bug ada/108157] " rguenth at gcc dot gnu.org
2023-05-08 12:26 ` [Bug ada/108157] [12/13/14 " rguenth at gcc dot gnu.org
2023-05-10 11:07 ` simon at pushface dot org
2023-05-11 12:33 ` ebotcazou at gcc dot gnu.org
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