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* [Bug libstdc++/100436] New: std::views::iota(0, true) is well-formed
@ 2021-05-05 15:54 hewillk at gmail dot com
2021-05-05 16:10 ` [Bug libstdc++/100436] " hewillk at gmail dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: hewillk at gmail dot com @ 2021-05-05 15:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100436
Bug ID: 100436
Summary: std::views::iota(0, true) is well-formed
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: hewillk at gmail dot com
Target Milestone: ---
Hi, The following is accepted since gcc-11:
https://godbolt.org/z/P8v383Wr3
#include <ranges>
auto r = std::views::iota(0, true);
Shouldn't this be ill-formed? Isn’t this kind of initialization explicitly
prohibited in the deduction guides? Correct me if i am wrong, thanks.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/100436] std::views::iota(0, true) is well-formed
2021-05-05 15:54 [Bug libstdc++/100436] New: std::views::iota(0, true) is well-formed hewillk at gmail dot com
@ 2021-05-05 16:10 ` hewillk at gmail dot com
2021-05-05 17:27 ` hewillk at gmail dot com
2021-05-05 17:36 ` hewillk at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: hewillk at gmail dot com @ 2021-05-05 16:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100436
--- Comment #1 from 康桓瑋 <hewillk at gmail dot com> ---
Oh, I see, the reason is that std::ranges::__detail::__is_integer_like<bool> is
set to false since gcc-11.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/100436] std::views::iota(0, true) is well-formed
2021-05-05 15:54 [Bug libstdc++/100436] New: std::views::iota(0, true) is well-formed hewillk at gmail dot com
2021-05-05 16:10 ` [Bug libstdc++/100436] " hewillk at gmail dot com
@ 2021-05-05 17:27 ` hewillk at gmail dot com
2021-05-05 17:36 ` hewillk at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: hewillk at gmail dot com @ 2021-05-05 17:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100436
康桓瑋 <hewillk at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|UNCONFIRMED |RESOLVED
--- Comment #2 from 康桓瑋 <hewillk at gmail dot com> ---
(In reply to 康桓瑋 from comment #1)
> Oh, I see, the reason is that std::ranges::__detail::__is_integer_like<bool>
> is set to false since gcc-11.
This is just the implementation of LWG 3467.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libstdc++/100436] std::views::iota(0, true) is well-formed
2021-05-05 15:54 [Bug libstdc++/100436] New: std::views::iota(0, true) is well-formed hewillk at gmail dot com
2021-05-05 16:10 ` [Bug libstdc++/100436] " hewillk at gmail dot com
2021-05-05 17:27 ` hewillk at gmail dot com
@ 2021-05-05 17:36 ` hewillk at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: hewillk at gmail dot com @ 2021-05-05 17:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100436
--- Comment #3 from 康桓瑋 <hewillk at gmail dot com> ---
(In reply to 康桓瑋 from comment #2)
> (In reply to 康桓瑋 from comment #1)
> > Oh, I see, the reason is that std::ranges::__detail::__is_integer_like<bool>
> > is set to false since gcc-11.
>
> This is just the implementation of LWG 3467.
I think the legality of std::views::iota(-100, false) is just an inadvertent of
LWG 3467.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-05-05 17:36 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2021-05-05 15:54 [Bug libstdc++/100436] New: std::views::iota(0, true) is well-formed hewillk at gmail dot com
2021-05-05 16:10 ` [Bug libstdc++/100436] " hewillk at gmail dot com
2021-05-05 17:27 ` hewillk at gmail dot com
2021-05-05 17:36 ` hewillk at gmail dot com
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