gcc/testsuite/g++.dg/cpp1y/pr79937-3.C

// PR c++/79937
// { dg-do run { target c++14 } }

struct X {
  unsigned i;
  unsigned n = i;
  unsigned m = i;
};

X
bar (X x)
{
  if (x.i != 1 || x.n != 2 || x.m != 1)
    __builtin_abort ();
  return x;
}

int
main ()
{
  X x = bar (X {1, X {2}.n});
  if (x.i != 1 || x.n != 2 || x.m != 1)
    __builtin_abort ();
}