[Bug c++/103991] [12 Regression] Bogus -Wreturn-type with constexpr if and local var with destructor

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103991

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Maybe better:
struct S { ~S(); };
int
foo ()
{
  S s;
  if constexpr (true)
    return 0;
  else
    return 1;
}

#if __cpp_if_consteval >= 202106L
constexpr int
bar ()
{
  S s;
  if consteval
    {
      return 0;
    }
  else
    {
      return 1;
    }
}

int
baz ()
{
  return bar ();
}
#endif