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* [Bug c++/85973] [[nodiscard]] shall emit a warning for unused anonymous variable
[not found] <bug-85973-4@http.gcc.gnu.org/bugzilla/>
@ 2023-03-21 15:32 ` pinskia at gcc dot gnu.org
2023-03-21 15:32 ` pinskia at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-03-21 15:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85973
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |johelegp at gmail dot com
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 95454 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/85973] [[nodiscard]] shall emit a warning for unused anonymous variable
[not found] <bug-85973-4@http.gcc.gnu.org/bugzilla/>
2023-03-21 15:32 ` [Bug c++/85973] [[nodiscard]] shall emit a warning for unused anonymous variable pinskia at gcc dot gnu.org
@ 2023-03-21 15:32 ` pinskia at gcc dot gnu.org
2023-03-21 15:33 ` [Bug c++/85973] [[nodiscard]] on class " pinskia at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-03-21 15:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85973
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tejo@bang-olufsen.dk
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 109235 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/85973] [[nodiscard]] on class shall emit a warning for unused anonymous variable
[not found] <bug-85973-4@http.gcc.gnu.org/bugzilla/>
2023-03-21 15:32 ` [Bug c++/85973] [[nodiscard]] shall emit a warning for unused anonymous variable pinskia at gcc dot gnu.org
2023-03-21 15:32 ` pinskia at gcc dot gnu.org
@ 2023-03-21 15:33 ` pinskia at gcc dot gnu.org
2024-02-29 17:33 ` mpolacek at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-03-21 15:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85973
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2023-03-21
Ever confirmed|0 |1
Summary|[[nodiscard]] shall emit a |[[nodiscard]] on class
|warning for unused |shall emit a warning for
|anonymous variable |unused anonymous variable
Status|UNCONFIRMED |NEW
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
```
struct [[nodiscard]] scope_exit {
scope_exit(int);
};
int main()
{
scope_exit{0};
}
```
Note if we move the attribute to the constructor, then GCC will error out.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/85973] [[nodiscard]] on class shall emit a warning for unused anonymous variable
[not found] <bug-85973-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2023-03-21 15:33 ` [Bug c++/85973] [[nodiscard]] on class " pinskia at gcc dot gnu.org
@ 2024-02-29 17:33 ` mpolacek at gcc dot gnu.org
2024-08-27 0:28 ` pinskia at gcc dot gnu.org
2024-08-27 10:23 ` leonid.satanovsky at gmail dot com
5 siblings, 0 replies; 6+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2024-02-29 17:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85973
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tiagomacarios at gmail dot com
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
*** Bug 98520 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/85973] [[nodiscard]] on class shall emit a warning for unused anonymous variable
[not found] <bug-85973-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2024-02-29 17:33 ` mpolacek at gcc dot gnu.org
@ 2024-08-27 0:28 ` pinskia at gcc dot gnu.org
2024-08-27 10:23 ` leonid.satanovsky at gmail dot com
5 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-08-27 0:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85973
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |leonid.satanovsky at gmail dot com
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 116441 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/85973] [[nodiscard]] on class shall emit a warning for unused anonymous variable
[not found] <bug-85973-4@http.gcc.gnu.org/bugzilla/>
` (4 preceding siblings ...)
2024-08-27 0:28 ` pinskia at gcc dot gnu.org
@ 2024-08-27 10:23 ` leonid.satanovsky at gmail dot com
5 siblings, 0 replies; 6+ messages in thread
From: leonid.satanovsky at gmail dot com @ 2024-08-27 10:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85973
--- Comment #6 from Leonid Satanovsky <leonid.satanovsky at gmail dot com> ---
As you are marking other bugs as duplicates of the current bug, please don't
forget to transfer the useful test cases not mentioned in current bug (e.g.
GccFailedNoDiscard2 case seen below):
struct [[nodiscard]] GccFailedNoDiscard1 {};
struct GccFailedNoDiscard2 { [[nodiscard]] GccFailedNoDiscard2() = default;};
template<class T> struct [[nodiscard]] GccFailedNoDiscard3 {};
struct GccOKNoDiscard1 { [[nodiscard]] GccOKNoDiscard1() {}};
template<class T> struct GccOKNoDiscard2 {
[[nodiscard]] GccOKNoDiscard2() {}};
int main() {
GccFailedNoDiscard1 {};
GccFailedNoDiscard2 {};
GccFailedNoDiscard3<void> {};
GccOKNoDiscard1 {};
GccOKNoDiscard2<void> {};
}
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2024-08-27 10:23 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-85973-4@http.gcc.gnu.org/bugzilla/>
2023-03-21 15:32 ` [Bug c++/85973] [[nodiscard]] shall emit a warning for unused anonymous variable pinskia at gcc dot gnu.org
2023-03-21 15:32 ` pinskia at gcc dot gnu.org
2023-03-21 15:33 ` [Bug c++/85973] [[nodiscard]] on class " pinskia at gcc dot gnu.org
2024-02-29 17:33 ` mpolacek at gcc dot gnu.org
2024-08-27 0:28 ` pinskia at gcc dot gnu.org
2024-08-27 10:23 ` leonid.satanovsky at gmail dot com
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