1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <array>
11
12 // reference front();
13 // reference back();
14 // const_reference front(); // constexpr in C++14
15 // const_reference back(); // constexpr in C++14
16
17 #include <array>
18 #include <cassert>
19
20 #include "test_macros.h"
21
22 #include "suppress_array_warnings.h"
23
main()24 int main()
25 {
26 {
27 typedef double T;
28 typedef std::array<T, 3> C;
29 C c = {1, 2, 3.5};
30
31 C::reference r1 = c.front();
32 assert(r1 == 1);
33 r1 = 5.5;
34 assert(c[0] == 5.5);
35
36 C::reference r2 = c.back();
37 assert(r2 == 3.5);
38 r2 = 7.5;
39 assert(c[2] == 7.5);
40 }
41 {
42 typedef double T;
43 typedef std::array<T, 3> C;
44 const C c = {1, 2, 3.5};
45 C::const_reference r1 = c.front();
46 assert(r1 == 1);
47
48 C::const_reference r2 = c.back();
49 assert(r2 == 3.5);
50 }
51
52 #if TEST_STD_VER > 11
53 {
54 typedef double T;
55 typedef std::array<T, 3> C;
56 constexpr C c = {1, 2, 3.5};
57
58 constexpr T t1 = c.front();
59 static_assert (t1 == 1, "");
60
61 constexpr T t2 = c.back();
62 static_assert (t2 == 3.5, "");
63 }
64 #endif
65
66 }
67