[Bug libstdc++/80762] is_constructible gives hard error with clang

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80762

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2017-05-15
           Assignee|unassigned at gcc dot gnu.org      |redi at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And this fails even with GCC:

#include <experimental/filesystem>

int main()
{
  using std::experimental::filesystem::path;

  static_assert( !std::is_constructible<path, volatile path>::value, "");
}