public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [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
end of thread, other threads:[~2021-03-10 17:29 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 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
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).