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* [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations
@ 2023-04-25 10:05 jlame646 at gmail dot com
2023-04-25 15:29 ` [Bug c++/109621] [10/11/12/13/14 Regression] " pinskia at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: jlame646 at gmail dot com @ 2023-04-25 10:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621
Bug ID: 109621
Summary: GCC accepts invalid program with multiple using
declarations
Product: gcc
Version: 13.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jlame646 at gmail dot com
Target Milestone: ---
The following invalid program(afaik) is accepted by gcc and msvc.
https://godbolt.org/z/1Tsx54ro5
```
namespace X
{
struct type {};
}
namespace Y
{
using type = int;
}
using X::type;
using Y::type;
int main()
{
auto i = sizeof(type); //gcc and msvc accepts this but clang rejects this
}
```
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [10/11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations
2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com
@ 2023-04-25 15:29 ` pinskia at gcc dot gnu.org
2023-04-25 17:24 ` redi at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-04-25 15:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|GCC accepts invalid program |[10/11/12/13/14 Regression]
|with multiple using |GCC accepts invalid program
|declarations |with multiple using
| |declarations
Known to fail| |4.4.7
Target Milestone|--- |10.5
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Known to work| |4.1.2
Last reconfirmed| |2023-04-25
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
C++98 version which shows it is a regression and it started to fail between GCC
4.1.2 and 4.4.7:
```
namespace X
{
struct type {};
}
namespace Y
{
typedef int type;
}
using Y::type;
using X::type;
int i = sizeof(type); //gcc and msvc accepts this but clang rejects this
```
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [10/11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations
2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com
2023-04-25 15:29 ` [Bug c++/109621] [10/11/12/13/14 Regression] " pinskia at gcc dot gnu.org
@ 2023-04-25 17:24 ` redi at gcc dot gnu.org
2023-04-25 17:25 ` redi at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2023-04-25 17:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Possibly started with
re PR c++/31749 (ICE with invalid redeclaration of builtin)
PR c++/31749
gcc/cp/
* name-lookup.c (do_nonmember_using_decl): Shift implicit type
declarations into appropriate slots for comparison. Fix type
comparison.
gcc/testsuite/
* g++.dg/lookup/builtin3.C: New test.
* g++.dg/lookup/builtin4.C: New test.
* g++.dg/lookup/using19.C: New test.
From-SVN: r127600
Or something before that and after r127526.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [10/11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations
2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com
2023-04-25 15:29 ` [Bug c++/109621] [10/11/12/13/14 Regression] " pinskia at gcc dot gnu.org
2023-04-25 17:24 ` redi at gcc dot gnu.org
@ 2023-04-25 17:25 ` redi at gcc dot gnu.org
2023-07-07 10:45 ` [Bug c++/109621] [11/12/13/14 " rguenth at gcc dot gnu.org
2024-01-12 10:36 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2023-04-25 17:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Which makes it a regression in 4.3.0 and later.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations
2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com
` (2 preceding siblings ...)
2023-04-25 17:25 ` redi at gcc dot gnu.org
@ 2023-07-07 10:45 ` rguenth at gcc dot gnu.org
2024-01-12 10:36 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-07-07 10:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.5 |11.5
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 branch is being closed.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/109621] [11/12/13/14 Regression] GCC accepts invalid program with multiple using declarations
2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com
` (3 preceding siblings ...)
2023-07-07 10:45 ` [Bug c++/109621] [11/12/13/14 " rguenth at gcc dot gnu.org
@ 2024-01-12 10:36 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-01-12 10:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109621
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2024-01-12 10:36 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2023-04-25 10:05 [Bug c++/109621] New: GCC accepts invalid program with multiple using declarations jlame646 at gmail dot com
2023-04-25 15:29 ` [Bug c++/109621] [10/11/12/13/14 Regression] " pinskia at gcc dot gnu.org
2023-04-25 17:24 ` redi at gcc dot gnu.org
2023-04-25 17:25 ` redi at gcc dot gnu.org
2023-07-07 10:45 ` [Bug c++/109621] [11/12/13/14 " rguenth at gcc dot gnu.org
2024-01-12 10:36 ` rguenth at gcc dot gnu.org
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