[Bug c++/106968] New: ignored noexcept(false) in explicitly-defaulted functions

[fchelnokov at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106968

            Bug ID: 106968
           Summary: ignored noexcept(false) in explicitly-defaulted
                    functions
           Product: gcc
           Version: 12.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: fchelnokov at gmail dot com
  Target Milestone: ---

This code is accepted in Clang and MSVC:
```
#include <type_traits>

struct A {
    A(A &&) noexcept(false) = default;
};

static_assert(!std::is_nothrow_move_constructible_v<A>);
```
but in GCC static assertion fails, online demo: https://godbolt.org/z/x3Gz46Exe