third_party/llvm-project/clang/test/Modules/Inputs/PR27739/map

#ifndef _GLIBCXX_MAP
#define _GLIBCXX_MAP
struct basic_string {
  basic_string(char *);
} typedef string;

template <typename> class D;
template <typename _Elements> struct D {
  _Elements _M_;
  D(D &) = default;
};

template <typename _Elements> D<_Elements &&> forward_as_tuple(_Elements);

template <typename _Key, typename _Tp> struct map {
  _Tp operator[](_Key p1) {
    auto b = &forward_as_tuple(p1);
  }
};
#endif