libstdc++-v3/testsuite/23_containers/array/creation/111512.cc

   1 // { dg-do compile { target c++20 } }
   2
   3 // Bug libstdc++/111511 - Incorrect ADL in std::to_array in GCC 11/12/13
   4 // Bug c++/111512 - GCC's __builtin_memcpy can trigger ADL
   5
   6 #include <array>
   7 #include <utility>
   8
   9 struct incomplete;
  10
  11 template<class T>
  12 struct holder {
  13     T t; // { dg-bogus "'holder<T>::t' has incomplete type" }
  14 };
  15
  16 // A complete type that cannot be used as an associated type for ADL.
  17 using adl_bomb = holder<incomplete>*;
  18
  19 int main()
  20 {
  21     adl_bomb a[1]{};
  22     (void) std::to_array(a);
  23     (void) std::to_array(std::move(a));
  24 }