libcxx/test/std/numerics/complex.number/complex.tuple/tuple_element.verify.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, c++14, c++17, c++20, c++23
  10
  11 // <complex>
  12
  13 //   template<size_t I, class T> struct tuple_element;
  14
  15 #include <cassert>
  16 #include <complex>
  17 #include <concepts>
  18
  19 template <typename T>
  20 void test() {
  21   using C = std::complex<T>;
  22
  23   // expected-error-re@*:* 3 {{static assertion failed {{.*}}Index value is out of range.}}
  24   [[maybe_unused]] std::tuple_element<3, C> te{};
  25 }
  26
  27 void test() {
  28   test<float>();
  29   test<double>();
  30   test<long double>();
  31 }