1 // PR c++/49136
2 // { dg-do compile { target c++11 } }
3 
4 struct S
5 {
6   unsigned : 1; unsigned s : 27; unsigned : 4;
SS7   constexpr S (unsigned int x) : s(x) {}
8 };
9 
10 template <typename S>
11 struct T
12 {
13   unsigned int t;
TT14   constexpr T (S s) : t(s.s != 7 ? 0 : s.s) {}
TT15   constexpr T (S s, S s2) : t(s.s != s2.s ? 0 : s.s) {}
16 };
17 
18 constexpr S s (7), s2 (7);
19 constexpr T<S> t (s), t2 (s, s2);
20 static_assert (t.t == 7, "Error");
21 static_assert (t2.t == 7, "Error");
22 
23 struct U
24 {
25   int a : 1; int s : 1;
UU26   constexpr U (int x, int y) : a (x), s (y) {}
27 };
28 
29 constexpr U u (0, -1), u2 (-1, -1);
30 constexpr T<U> t3 (u), t4 (u, u2);
31 static_assert (t3.t == 0, "Error");
32 static_assert (t4.t == -1, "Error");
33