1 // P0683R1
2 // { dg-do run { target c++11 } }
3 // { dg-options "" }
4
5 extern "C" void abort ();
6 int a;
7 const int b = 0;
8 struct S {
9 int c : 5 = 1; // { dg-warning "default member initializers for bit-fields only available with" "" { target c++17_down } }
10 int d : 6 { 2 }; // { dg-warning "default member initializers for bit-fields only available with" "" { target c++17_down } }
11 int e : true ? 7 : a = 3;
12 int f : (true ? 8 : b) = 4; // { dg-warning "default member initializers for bit-fields only available with" "" { target c++17_down } }
13 int g : (true ? 9 : b) { 5 }; // { dg-warning "default member initializers for bit-fields only available with" "" { target c++17_down } }
14 int h : 1 || new int { 0 };
15 };
16 #if __cplusplus >= 201402L
17 static_assert (S{}.c == 1);
18 static_assert (S{}.d == 2);
19 static_assert (S{}.e == 0);
20 static_assert (S{}.f == 4);
21 static_assert (S{}.g == 5);
22 static_assert (S{}.h == 0);
23 #endif
24 template <bool V, int W>
25 struct U {
26 int j : W = 7; // { dg-warning "default member initializers for bit-fields only available with" "" { target c++17_down } }
27 int k : W { 8 }; // { dg-warning "default member initializers for bit-fields only available with" "" { target c++17_down } }
28 int l : V ? 7 : a = 3;
29 int m : (V ? W : b) = 9; // { dg-warning "default member initializers for bit-fields only available with" "" { target c++17_down } }
30 int n : (V ? W : b) { 10 }; // { dg-warning "default member initializers for bit-fields only available with" "" { target c++17_down } }
31 int o : 1 || new int { 0 };
32 };
33 #if __cplusplus >= 201402L
34 static_assert (U<true, 12>{}.j == 7);
35 static_assert (U<true, 13>{}.k == 8);
36 static_assert (U<true, 10>{}.l == 0);
37 static_assert (U<true, 11>{}.m == 9);
38 static_assert (U<true, 8>{}.n == 10);
39 static_assert (U<true, 7>{}.o == 0);
40 #endif
41 S s;
42 U<true, 10> u;
43
44 int
main()45 main ()
46 {
47 if (s.c != 1 || s.d != 2 || s.e != 0 || s.f != 4 || s.g != 5 || s.h != 0)
48 abort ();
49 s.c = 47; // { dg-warning "overflow in conversion from" }
50 s.d = 47 * 2; // { dg-warning "overflow in conversion from" }
51 s.e = 47 * 4; // { dg-warning "overflow in conversion from" }
52 s.f = 47 * 8; // { dg-warning "overflow in conversion from" }
53 s.g = 47 * 16; // { dg-warning "overflow in conversion from" }
54 s.h = 2; // { dg-warning "overflow in conversion from" }
55 if (s.c != 15 || s.d != 15 * 2 || s.e != 15 * 4 || s.f != 15 * 8 || s.g != 15 * 16 || s.h != 0)
56 abort ();
57 if (u.j != 7 || u.k != 8 || u.l != 0 || u.m != 9 || u.n != 10 || u.o != 0)
58 abort ();
59 u.j = 47 * 32; // { dg-warning "overflow in conversion from" }
60 u.k = 47 * 32; // { dg-warning "overflow in conversion from" }
61 u.l = 47 * 4; // { dg-warning "overflow in conversion from" }
62 u.m = 47 * 32; // { dg-warning "overflow in conversion from" }
63 u.n = 47 * 32; // { dg-warning "overflow in conversion from" }
64 u.o = 2; // { dg-warning "overflow in conversion from" }
65 if (u.j != 15 * 32 || u.k != 15 * 32 || u.l != 15 * 4 || u.m != 15 * 32 || u.n != 15 * 32 || u.o != 0)
66 abort ();
67 s.c = 15;
68 s.d = 15 * 2;
69 s.e = 15 * 4;
70 s.f = 16 * 8;
71 s.g = 15 * 16;
72 u.j = 15 * 32;
73 u.k = 15 * 32;
74 u.l = 15 * 4;
75 u.m = 15 * 32;
76 u.n = 15 * 32;
77 }
78