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* [Bug c++/105693] New: Requires-clause constructor is not selected
@ 2022-05-22 18:40 fchelnokov at gmail dot com
2022-10-26 20:37 ` [Bug c++/105693] " pinskia at gcc dot gnu.org
2022-10-26 20:42 ` [Bug c++/105693] Requires-clause constructor that is deleted is not overriding the "= default" one pinskia at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: fchelnokov at gmail dot com @ 2022-05-22 18:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105693
Bug ID: 105693
Summary: Requires-clause constructor is not selected
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fchelnokov at gmail dot com
Target Milestone: ---
In the following program struct template A has deleted default constructor for
T=int:
#include <concepts>
template<typename T>
struct A {
A() = default;
A() requires (std::same_as<T,int>) = delete;
};
A<int> a;
The program is rejected by Clang and MSVC, but not by GCC. Demo:
https://gcc.godbolt.org/z/G7T5xv35q
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug c++/105693] Requires-clause constructor is not selected 2022-05-22 18:40 [Bug c++/105693] New: Requires-clause constructor is not selected fchelnokov at gmail dot com @ 2022-10-26 20:37 ` pinskia at gcc dot gnu.org 2022-10-26 20:42 ` [Bug c++/105693] Requires-clause constructor that is deleted is not overriding the "= default" one pinskia at gcc dot gnu.org 1 sibling, 0 replies; 3+ messages in thread From: pinskia at gcc dot gnu.org @ 2022-10-26 20:37 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105693 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Last reconfirmed| |2022-10-26 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Confirmed. reduced testcase without includes: ``` template<typename T, typename T1> constexpr bool same = false; template<typename T> constexpr bool same<T, T> = true; template<typename T> struct A { A() = default; A() requires (same<T,int>) = delete; }; A<int> a; ``` ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/105693] Requires-clause constructor that is deleted is not overriding the "= default" one 2022-05-22 18:40 [Bug c++/105693] New: Requires-clause constructor is not selected fchelnokov at gmail dot com 2022-10-26 20:37 ` [Bug c++/105693] " pinskia at gcc dot gnu.org @ 2022-10-26 20:42 ` pinskia at gcc dot gnu.org 1 sibling, 0 replies; 3+ messages in thread From: pinskia at gcc dot gnu.org @ 2022-10-26 20:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105693 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Requires-clause constructor |Requires-clause constructor |is not selected |that is deleted is not | |overriding the "= default" | |one --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note the Requires-clause constructor is selected as you can see if you do: ``` template<typename T, typename T1> constexpr bool same = true; template<typename T> struct A { A() = default; A() requires (same<T,int>){}; }; A<int> a; ``` And see a constructor is called. Just that the "= delete" is not being rejected. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-10-26 20:42 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-05-22 18:40 [Bug c++/105693] New: Requires-clause constructor is not selected fchelnokov at gmail dot com 2022-10-26 20:37 ` [Bug c++/105693] " pinskia at gcc dot gnu.org 2022-10-26 20:42 ` [Bug c++/105693] Requires-clause constructor that is deleted is not overriding the "= default" one pinskia at gcc dot gnu.org
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