libcxx/test/std/containers/sequences/array/compare.three_way.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 // UNSUPPORTED: c++03, c++11, c++14, c++17
   9
  10 // <array>
  11
  12 // template<class T, size_t N>
  13 //   constexpr synth-three-way-result<T>
  14 //     operator<=>(const array<T, N>& x, const array<T, N>& y);
  15
  16 // arrays with different sizes should not compare
  17
  18 #include <array>
  19
  20 int main(int, char**) {
  21   {
  22     std::array a1{1};
  23     std::array a2{1, 2};
  24
  25     // expected-error@*:* {{invalid operands to binary expression}}
  26     a1 <=> a2;
  27   }
  28   {
  29     std::array a1{1, 2};
  30     std::array a2{1};
  31
  32     // expected-error@*:* {{invalid operands to binary expression}}
  33     a1 <=> a2;
  34   }
  35
  36   return 0;
  37 }