1 // PR c++/49136
2 // { dg-do compile { target c++11 } }
3 // { dg-require-effective-target int32plus }
4 
5 struct S
6 {
7   unsigned : 1; unsigned s : 27; unsigned : 4;
SS8   constexpr S (unsigned int x) : s(x) {}
9 };
10 
11 template <typename S>
12 struct T
13 {
14   unsigned int t;
TT15   constexpr T (S s) : t(s.s != 7 ? 0 : s.s) {}
TT16   constexpr T (S s, S s2) : t(s.s != s2.s ? 0 : s.s) {}
17 };
18 
19 constexpr S s (7), s2 (7);
20 constexpr T<S> t (s), t2 (s, s2);
21 static_assert (t.t == 7, "Error");
22 static_assert (t2.t == 7, "Error");
23 
24 struct U
25 {
26   int a : 1; int s : 1;
UU27   constexpr U (int x, int y) : a (x), s (y) {}
28 };
29 
30 constexpr U u (0, -1), u2 (-1, -1);
31 constexpr T<U> t3 (u), t4 (u, u2);
32 static_assert (t3.t == 0, "Error");
33 static_assert (t4.t == -1, "Error");
34