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* [Bug c++/110486] New: gcc rejects constant expression with consteval lambda
@ 2023-06-29 14:39 hewillk at gmail dot com
  2023-06-29 14:54 ` [Bug c++/110486] " pinskia at gcc dot gnu.org
  2024-04-15 23:07 ` pinskia at gcc dot gnu.org
  0 siblings, 2 replies; 3+ messages in thread
From: hewillk at gmail dot com @ 2023-06-29 14:39 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110486

            Bug ID: 110486
           Summary: gcc rejects constant expression with consteval lambda
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hewillk at gmail dot com
  Target Milestone: ---

GCC rejects the following, while MSVC and Clang compile fine.
Not sure if the code is well-formed.

#include <vector>

constexpr auto g = []() consteval {
  std::vector<int> v;
  v.push_back(0);
  return v;
};

constexpr auto l = [] {
  constexpr auto sz = g().size();
  return 0;
}();

https://godbolt.org/z/WrTx3bn3r

^ permalink raw reply	[flat|nested] 3+ messages in thread

* [Bug c++/110486] gcc rejects constant expression with consteval lambda
  2023-06-29 14:39 [Bug c++/110486] New: gcc rejects constant expression with consteval lambda hewillk at gmail dot com
@ 2023-06-29 14:54 ` pinskia at gcc dot gnu.org
  2024-04-15 23:07 ` pinskia at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-06-29 14:54 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110486

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The question is the second lamdba implicitly consteval or not ...

If it is, then the bug is dealing with that. That is adding consteval to the
second lamdba allows GCC to accept the code.

^ permalink raw reply	[flat|nested] 3+ messages in thread

* [Bug c++/110486] gcc rejects constant expression with consteval lambda
  2023-06-29 14:39 [Bug c++/110486] New: gcc rejects constant expression with consteval lambda hewillk at gmail dot com
  2023-06-29 14:54 ` [Bug c++/110486] " pinskia at gcc dot gnu.org
@ 2024-04-15 23:07 ` pinskia at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-04-15 23:07 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110486

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |14.0
           Keywords|                            |c++-lambda, needs-bisection

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Seems fixed on the trunk (for GCC 14).

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2024-04-15 23:07 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2023-06-29 14:39 [Bug c++/110486] New: gcc rejects constant expression with consteval lambda hewillk at gmail dot com
2023-06-29 14:54 ` [Bug c++/110486] " pinskia at gcc dot gnu.org
2024-04-15 23:07 ` pinskia at gcc dot gnu.org

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