[Bug c++/104242] New: Class with constructor from std::any is not copyable

[fchelnokov at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104242

            Bug ID: 104242
           Summary: Class with constructor from std::any is not copyable
           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: ---

The following code
```
#include <any>
#include <type_traits>

struct A {
    A(const A&) = default;
    explicit A(std::any value);
};
static_assert(std::is_copy_constructible_v<A>);
```
is accepted by GCC 11, but rejected by GCC trunk. Demo:
https://gcc.godbolt.org/z/sWTbhqE6c