[Bug c++/124425] [reflection] Unable to construct meta::reflect_constant_array(std::vector{true, false, true})

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124425

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think this should do it:


struct sentinel { };

struct iterator
{
  using value_type = int;
  using difference_type = int;

  struct proxy
  {
    int i;
    constexpr operator int() const { return i; }
  };

  constexpr iterator& operator++() { ++i; return *this; }
  constexpr iterator operator++(int) { return iterator{i++}; }

  constexpr proxy operator*() const { return proxy{i}; }

  constexpr bool operator==(sentinel) const { return i == 10; }

  int i = 0;
};

struct range
{
  constexpr iterator begin() const { return {}; };
  constexpr sentinel end() const { return {}; };
};

#include <ranges>
static_assert(std::ranges::input_range<::range>);

#include <meta>
constexpr auto sp = std::meta::reflect_constant_array(range{});