aligned_union.pass.cpp revision 933afa9761c1c1f916161278a99284d50a594939 
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// type_traits
11
12// aligned_union<size_t Len, class ...Types>
13
14#include <type_traits>
15
16int main()
17{
18#ifndef _LIBCPP_HAS_NO_VARIADICS
19    {
20    typedef std::aligned_union<10, char >::type T1;
21#if _LIBCPP_STD_VER > 11
22    static_assert(std::is_same<std::aligned_union_t<10, char>, T1>::value, "" );
23#endif
24    static_assert(std::alignment_of<T1>::value == 1, "");
25    static_assert(sizeof(T1) == 10, "");
26    }
27    {
28    typedef std::aligned_union<10, short >::type T1;
29#if _LIBCPP_STD_VER > 11
30    static_assert(std::is_same<std::aligned_union_t<10, short>, T1>::value, "" );
31#endif
32    static_assert(std::alignment_of<T1>::value == 2, "");
33    static_assert(sizeof(T1) == 10, "");
34    }
35    {
36    typedef std::aligned_union<10, int >::type T1;
37#if _LIBCPP_STD_VER > 11
38    static_assert(std::is_same<std::aligned_union_t<10, int>, T1>::value, "" );
39#endif
40    static_assert(std::alignment_of<T1>::value == 4, "");
41    static_assert(sizeof(T1) == 12, "");
42    }
43    {
44    typedef std::aligned_union<10, double >::type T1;
45#if _LIBCPP_STD_VER > 11
46    static_assert(std::is_same<std::aligned_union_t<10, double>, T1>::value, "" );
47#endif
48    static_assert(std::alignment_of<T1>::value == 8, "");
49    static_assert(sizeof(T1) == 16, "");
50    }
51    {
52    typedef std::aligned_union<10, short, char >::type T1;
53#if _LIBCPP_STD_VER > 11
54    static_assert(std::is_same<std::aligned_union_t<10, short, char>, T1>::value, "" );
55#endif
56    static_assert(std::alignment_of<T1>::value == 2, "");
57    static_assert(sizeof(T1) == 10, "");
58    }
59    {
60    typedef std::aligned_union<10, char, short >::type T1;
61#if _LIBCPP_STD_VER > 11
62    static_assert(std::is_same<std::aligned_union_t<10, char, short>, T1>::value, "" );
63#endif
64    static_assert(std::alignment_of<T1>::value == 2, "");
65    static_assert(sizeof(T1) == 10, "");
66    }
67    {
68    typedef std::aligned_union<2, int, char, short >::type T1;
69#if _LIBCPP_STD_VER > 11
70    static_assert(std::is_same<std::aligned_union_t<2, int, char, short>, T1>::value, "" );
71#endif
72    static_assert(std::alignment_of<T1>::value == 4, "");
73    static_assert(sizeof(T1) == 4, "");
74    }
75    {
76    typedef std::aligned_union<2, char, int, short >::type T1;
77#if _LIBCPP_STD_VER > 11
78    static_assert(std::is_same<std::aligned_union_t<2, char, int, short >, T1>::value, "" );
79#endif
80    static_assert(std::alignment_of<T1>::value == 4, "");
81    static_assert(sizeof(T1) == 4, "");
82    }
83    {
84    typedef std::aligned_union<2, char, short, int >::type T1;
85#if _LIBCPP_STD_VER > 11
86    static_assert(std::is_same<std::aligned_union_t<2, char, short, int >, T1>::value, "" );
87#endif
88    static_assert(std::alignment_of<T1>::value == 4, "");
89    static_assert(sizeof(T1) == 4, "");
90    }
91#endif
92}
93