gcc/testsuite/g++.dg/cpp1z/regress2.C


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// PR c++/67142
// { dg-do compile { target c++17 } }

namespace detail {
template <int> int split_at;
}
struct A {
  decltype(0) operator()();
};
template <typename> A make;
struct Tuple;
auto check =
    [](auto, auto, auto) { [](auto... xs) { [=] { make<Tuple>(xs...); }; }(); };
int main() {
  namespace vd = detail;
  check(vd::split_at<0>, make<Tuple>, make<Tuple>);
}