libcxx/test/std/experimental/utilities/meta/meta.detect/nonesuch.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11
  10 // <experimental/type_traits>
  11 //
  12 //  struct nonesuch
  13
  14 #include <experimental/type_traits>
  15 #include <string>
  16
  17 #include "test_macros.h"
  18
  19 namespace ex = std::experimental;
  20
  21 struct such {};
  22 void foo(const such &) {}
  23 void foo(const ex::nonesuch &) {}
  24
  25 int main(int, char**) {
  26     foo({});  // nonesuch is not an aggregate
  27
  28     return 0;
  29 }