libstdc++-v3/testsuite/23_containers/array/creation/115522.cc

   1 // { dg-do compile { target c++20 } }
   2
   3 // PR libstdc++/115522 std::to_array no longer works for struct which is
   4 // trivial but not default constructible
   5
   6 #include <array>
   7
   8 void
   9 test_deleted_ctor()
  10 {
  11   struct S
  12   {
  13     S() = delete;
  14     S(int) { }
  15   };
  16
  17   S arr[1] = {{1}};
  18   auto arr1 = std::to_array(arr);
  19   auto arr2 = std::to_array(std::move(arr));
  20 }
  21
  22 void
  23 test_deleted_assignment()
  24 {
  25   struct S
  26   {
  27     void operator=(const S&) = delete;
  28   };
  29
  30   S arr[1] = {};
  31   auto a1 = std::to_array(arr);
  32   auto a2 = std::to_array(std::move(arr));
  33 }