1 // PR c++/87122
2 // { dg-do run { target c++14 } }
3 // { dg-options "" }
4
5 extern "C" void abort ();
6 struct S { int a, b; };
7 int c;
8
9 template <int N>
10 void
foo()11 foo ()
12 {
13 S x[4] = { { N, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 } };
14 auto f = [](auto & y) {
15 for (auto & [ u, v ] : y) // { dg-warning "structured bindings only available with" "" { target c++14_down } }
16 {
17 if ((u & 1) != 1 || v != u + 1 || u < N || u > 7 || (c & (1 << u))
18 || &u != &y[v / 2 - 1].a || &v != &y[v / 2 - 1].b)
19 abort ();
20 c |= 1 << u;
21 }
22 };
23 f (x);
24 }
25
26 int
main()27 main ()
28 {
29 foo<1> ();
30 if (c != 0xaa)
31 abort ();
32 }
33