public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug c++/109781] New: erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda
@ 2023-05-08 21:35 eric.niebler at gmail dot com
2023-05-08 21:37 ` [Bug c++/109781] " pinskia at gcc dot gnu.org
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: eric.niebler at gmail dot com @ 2023-05-08 21:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109781
Bug ID: 109781
Summary: erroneous error "lambda-expression in template
parameter type" for tparam lambda returning a lambda
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eric.niebler at gmail dot com
Target Milestone: ---
template <auto A = []{ return []{}; }>
struct C {};
... on trunk with `-std=c++20` results in:
<source>: In lambda function:
<source>:1:31: error: lambda-expression in template parameter type
1 | template <auto A = []{ return []{}; }>
| ^
Compiler returned: 1
I don't know of a reason why this code should be rejected.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/109781] erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda
2023-05-08 21:35 [Bug c++/109781] New: erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda eric.niebler at gmail dot com
@ 2023-05-08 21:37 ` pinskia at gcc dot gnu.org
2023-05-16 12:17 ` [Bug c++/109781] [11/12/13/14 Regression] " ppalka at gcc dot gnu.org
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-05-08 21:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109781
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2023-05-08
Status|UNCONFIRMED |NEW
Keywords| |rejects-valid
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/109781] [11/12/13/14 Regression] erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda
2023-05-08 21:35 [Bug c++/109781] New: erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda eric.niebler at gmail dot com
2023-05-08 21:37 ` [Bug c++/109781] " pinskia at gcc dot gnu.org
@ 2023-05-16 12:17 ` ppalka at gcc dot gnu.org
2023-05-29 10:08 ` jakub at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: ppalka at gcc dot gnu.org @ 2023-05-16 12:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109781
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |11.4
Summary|erroneous error |[11/12/13/14 Regression]
|"lambda-expression in |erroneous error
|template parameter type" |"lambda-expression in
|for tparam lambda returning |template parameter type"
|a lambda |for tparam lambda returning
| |a lambda
Known to work| |10.3.0
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=99478
CC| |jason at gcc dot gnu.org,
| |ppalka at gcc dot gnu.org
--- Comment #2 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Started with r11-8166-ge1666ebd9ad31d.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/109781] [11/12/13/14 Regression] erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda
2023-05-08 21:35 [Bug c++/109781] New: erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda eric.niebler at gmail dot com
2023-05-08 21:37 ` [Bug c++/109781] " pinskia at gcc dot gnu.org
2023-05-16 12:17 ` [Bug c++/109781] [11/12/13/14 Regression] " ppalka at gcc dot gnu.org
@ 2023-05-29 10:08 ` jakub at gcc dot gnu.org
2023-10-28 15:00 ` johelegp at gmail dot com
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu.org @ 2023-05-29 10:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109781
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.4 |11.5
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.4 is being released, retargeting bugs to GCC 11.5.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/109781] [11/12/13/14 Regression] erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda
2023-05-08 21:35 [Bug c++/109781] New: erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda eric.niebler at gmail dot com
` (2 preceding siblings ...)
2023-05-29 10:08 ` jakub at gcc dot gnu.org
@ 2023-10-28 15:00 ` johelegp at gmail dot com
2023-10-28 15:01 ` johelegp at gmail dot com
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: johelegp at gmail dot com @ 2023-10-28 15:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109781
--- Comment #4 from Johel Ernesto Guerrero Peña <johelegp at gmail dot com> ---
This isn't valid since <https://cplusplus.github.io/CWG/issues/2542.html>.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/109781] [11/12/13/14 Regression] erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda
2023-05-08 21:35 [Bug c++/109781] New: erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda eric.niebler at gmail dot com
` (3 preceding siblings ...)
2023-10-28 15:00 ` johelegp at gmail dot com
@ 2023-10-28 15:01 ` johelegp at gmail dot com
2024-01-12 11:03 ` rguenth at gcc dot gnu.org
2024-07-19 13:20 ` [Bug c++/109781] [12/13/14/15 " rguenth at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: johelegp at gmail dot com @ 2023-10-28 15:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109781
--- Comment #5 from Johel Ernesto Guerrero Peña <johelegp at gmail dot com> ---
Add `+` to convert it to a pointer,
and it's still rejected (<https://compiler-explorer.com/z/PMras4rzd>):
```C++
template <auto A = +[]{ return []{}; }>
struct C {};
```
```output
<source>: In lambda function:
<source>:1:32: error: lambda-expression in template parameter type
1 | template <auto A = +[]{ return []{}; }>
| ^
Compiler returned: 1
```
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/109781] [11/12/13/14 Regression] erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda
2023-05-08 21:35 [Bug c++/109781] New: erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda eric.niebler at gmail dot com
` (4 preceding siblings ...)
2023-10-28 15:01 ` johelegp at gmail dot com
@ 2024-01-12 11:03 ` rguenth at gcc dot gnu.org
2024-07-19 13:20 ` [Bug c++/109781] [12/13/14/15 " rguenth at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-01-12 11:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109781
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
I wonder if it actually "works" in GCC 10?
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/109781] [12/13/14/15 Regression] erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda
2023-05-08 21:35 [Bug c++/109781] New: erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda eric.niebler at gmail dot com
` (5 preceding siblings ...)
2024-01-12 11:03 ` rguenth at gcc dot gnu.org
@ 2024-07-19 13:20 ` rguenth at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-07-19 13:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109781
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.5 |12.5
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 11 branch is being closed.
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2024-07-19 13:20 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-05-08 21:35 [Bug c++/109781] New: erroneous error "lambda-expression in template parameter type" for tparam lambda returning a lambda eric.niebler at gmail dot com
2023-05-08 21:37 ` [Bug c++/109781] " pinskia at gcc dot gnu.org
2023-05-16 12:17 ` [Bug c++/109781] [11/12/13/14 Regression] " ppalka at gcc dot gnu.org
2023-05-29 10:08 ` jakub at gcc dot gnu.org
2023-10-28 15:00 ` johelegp at gmail dot com
2023-10-28 15:01 ` johelegp at gmail dot com
2024-01-12 11:03 ` rguenth at gcc dot gnu.org
2024-07-19 13:20 ` [Bug c++/109781] [12/13/14/15 " rguenth at gcc dot gnu.org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).