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7c673cae FG |
1 | |
2 | #ifdef _MSC_VER | |
3 | #pragma pack(2) | |
4 | #endif | |
5 | ||
6 | // (C) Copyright John Maddock 2000. | |
7 | // Use, modification and distribution are subject to the | |
8 | // Boost Software License, Version 1.0. (See accompanying file | |
9 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
10 | ||
11 | #include "test.hpp" | |
12 | #include "check_integral_constant.hpp" | |
13 | #ifdef TEST_STD | |
14 | # include <type_traits> | |
15 | # include <boost/type_traits/type_with_alignment.hpp> // max_align and long_long_type | |
16 | #else | |
17 | # include <boost/type_traits/alignment_of.hpp> | |
18 | # include <boost/type_traits/aligned_storage.hpp> | |
19 | # include <boost/type_traits/is_pod.hpp> | |
20 | #endif | |
21 | ||
22 | template <class T> | |
23 | union must_be_pod | |
24 | { | |
25 | int i; | |
26 | T t; | |
27 | }; | |
28 | ||
29 | template <class T> | |
30 | inline void no_unused_warning(const volatile T&) | |
31 | { | |
32 | } | |
33 | ||
34 | template <class T> | |
35 | void do_check(const T&) | |
36 | { | |
37 | typedef typename tt::aligned_storage<T::value,T::value>::type t1; | |
b32b8144 FG |
38 | #if defined(BOOST_GCC) && (BOOST_GCC < 40800) |
39 | // In order to test this with warnings-as-errors with GCC, we need | |
40 | // a slightly different initializer here to suppress spurious | |
41 | // GCC warnings (ie to work around a GCC buglet). | |
42 | t1 as1 = {{{ 0, }}}; | |
43 | #else | |
7c673cae | 44 | t1 as1 = { 0, }; |
b32b8144 | 45 | #endif |
7c673cae FG |
46 | must_be_pod<t1> pod1; |
47 | no_unused_warning(as1); | |
48 | no_unused_warning(pod1); | |
49 | BOOST_TEST_MESSAGE(typeid(t1).name()); | |
50 | BOOST_CHECK(::tt::alignment_of<t1>::value == T::value); | |
51 | BOOST_CHECK(sizeof(t1) == T::value); | |
52 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION | |
53 | BOOST_CHECK(::tt::is_pod<t1>::value == true); | |
54 | #endif | |
55 | typedef typename tt::aligned_storage<T::value*2,T::value>::type t2; | |
b32b8144 FG |
56 | #if defined(BOOST_GCC) && (BOOST_GCC < 40800) |
57 | t2 as2 = {{{ 0, }}}; | |
58 | #else | |
7c673cae | 59 | t2 as2 = { 0, }; |
b32b8144 | 60 | #endif |
7c673cae FG |
61 | must_be_pod<t2> pod2; |
62 | no_unused_warning(as2); | |
63 | no_unused_warning(pod2); | |
64 | BOOST_TEST_MESSAGE(typeid(t2).name()); | |
65 | BOOST_CHECK(::tt::alignment_of<t2>::value == T::value); | |
66 | BOOST_CHECK(sizeof(t2) == T::value*2); | |
67 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION | |
68 | BOOST_CHECK(::tt::is_pod<t2>::value == true); | |
69 | #endif | |
70 | ||
71 | #ifndef TEST_STD | |
72 | // Non-Tr1 behaviour: | |
73 | typedef typename tt::aligned_storage<T::value,(std::size_t)(-1L)>::type t3; | |
b32b8144 FG |
74 | #if defined(BOOST_GCC) && (BOOST_GCC < 40800) |
75 | t3 as3 = {{{ 0, }}}; | |
76 | #else | |
7c673cae | 77 | t3 as3 = { 0, }; |
b32b8144 | 78 | #endif |
7c673cae FG |
79 | must_be_pod<t3> pod3; |
80 | no_unused_warning(as3); | |
81 | no_unused_warning(pod3); | |
82 | BOOST_TEST_MESSAGE(typeid(t3).name()); | |
83 | BOOST_CHECK(::tt::alignment_of<t3>::value == ::tt::alignment_of< ::boost::detail::max_align>::value); | |
84 | BOOST_CHECK((sizeof(t3) % T::value) == 0); | |
85 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION | |
86 | BOOST_CHECK(::tt::is_pod<t3>::value == true); | |
87 | #endif | |
88 | #endif | |
89 | } | |
90 | ||
91 | TT_TEST_BEGIN(type_with_alignment) | |
92 | ||
93 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<char>::value>()); | |
94 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<short>::value>()); | |
95 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<int>::value>()); | |
96 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<long>::value>()); | |
97 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<float>::value>()); | |
98 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<double>::value>()); | |
99 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<long double>::value>()); | |
100 | ||
101 | #ifdef BOOST_HAS_LONG_LONG | |
102 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of< ::boost::long_long_type>::value>()); | |
103 | #endif | |
104 | #ifdef BOOST_HAS_MS_INT64 | |
105 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<__int64>::value>()); | |
106 | #endif | |
107 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<int[4]>::value>()); | |
108 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<int(*)(int)>::value>()); | |
109 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<int*>::value>()); | |
110 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<VB>::value>()); | |
111 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<VD>::value>()); | |
112 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<enum_UDT>::value>()); | |
113 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<mf2>::value>()); | |
114 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<POD_UDT>::value>()); | |
115 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<empty_UDT>::value>()); | |
116 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<union_UDT>::value>()); | |
117 | do_check(tt::integral_constant<std::size_t,::tt::alignment_of<boost::detail::max_align>::value>()); | |
118 | ||
119 | TT_TEST_END | |
120 | ||
121 | ||
122 | ||
123 | ||
124 | ||
125 | ||
126 | ||
127 | ||
128 |