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* [Bug c++/99361] New: "unused variable" warning on a used variable in template lambda
@ 2021-03-03 14:54 hewillk at gmail dot com
2021-03-03 17:24 ` [Bug c++/99361] " mpolacek at gcc dot gnu.org
2021-03-10 17:29 ` hewillk at gmail dot com
0 siblings, 2 replies; 3+ messages in thread
From: hewillk at gmail dot com @ 2021-03-03 14:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99361
Bug ID: 99361
Summary: "unused variable" warning on a used variable in
template lambda
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hewillk at gmail dot com
Target Milestone: ---
The following code:
auto f() {
const auto x = 1;
return [] (auto) { return x; };
}
will emit unused variable warnings with "-std=c++20 -Wall" flags:
<source>: In function 'auto f()':
<source>:2:14: warning: variable 'x' set but not used
[-Wunused-but-set-variable]
2 | const auto x = 1;
|
godbolt: https://godbolt.org/z/d54j4G
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/99361] "unused variable" warning on a used variable in template lambda
2021-03-03 14:54 [Bug c++/99361] New: "unused variable" warning on a used variable in template lambda hewillk at gmail dot com
@ 2021-03-03 17:24 ` mpolacek at gcc dot gnu.org
2021-03-10 17:29 ` hewillk at gmail dot com
1 sibling, 0 replies; 3+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2021-03-03 17:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99361
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
CC| |mpolacek at gcc dot gnu.org
Last reconfirmed| |2021-03-03
Keywords| |diagnostic
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/99361] "unused variable" warning on a used variable in template lambda
2021-03-03 14:54 [Bug c++/99361] New: "unused variable" warning on a used variable in template lambda hewillk at gmail dot com
2021-03-03 17:24 ` [Bug c++/99361] " mpolacek at gcc dot gnu.org
@ 2021-03-10 17:29 ` hewillk at gmail dot com
1 sibling, 0 replies; 3+ messages in thread
From: hewillk at gmail dot com @ 2021-03-10 17:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99361
康桓瑋 <hewillk at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |DUPLICATE
Status|NEW |RESOLVED
--- Comment #2 from 康桓瑋 <hewillk at gmail dot com> ---
This is a duplicate of 96311.
*** This bug has been marked as a duplicate of bug 96311 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-03-03 14:54 [Bug c++/99361] New: "unused variable" warning on a used variable in template lambda hewillk at gmail dot com
2021-03-03 17:24 ` [Bug c++/99361] " mpolacek at gcc dot gnu.org
2021-03-10 17:29 ` hewillk at gmail dot com
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