//===----------------------------------------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is dual licensed under the MIT and the University of Illinois Open // Source Licenses. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // type_traits // aligned_storage #include int main() { { typedef std::aligned_storage<10, 1 >::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 1, ""); static_assert(sizeof(T1) == 10, ""); } { typedef std::aligned_storage<10, 2 >::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 2, ""); static_assert(sizeof(T1) == 10, ""); } { typedef std::aligned_storage<10, 4 >::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 4, ""); static_assert(sizeof(T1) == 12, ""); } { typedef std::aligned_storage<10, 8 >::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 8, ""); static_assert(sizeof(T1) == 16, ""); } { typedef std::aligned_storage<10, 16 >::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 16, ""); static_assert(sizeof(T1) == 16, ""); } { typedef std::aligned_storage<10, 32 >::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 32, ""); static_assert(sizeof(T1) == 32, ""); } { typedef std::aligned_storage<20, 32 >::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 32, ""); static_assert(sizeof(T1) == 32, ""); } { typedef std::aligned_storage<40, 32 >::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 32, ""); static_assert(sizeof(T1) == 64, ""); } { typedef std::aligned_storage<12, 16 >::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 16, ""); static_assert(sizeof(T1) == 16, ""); } { typedef std::aligned_storage<1>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 1, ""); static_assert(sizeof(T1) == 1, ""); } { typedef std::aligned_storage<2>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 2, ""); static_assert(sizeof(T1) == 2, ""); } { typedef std::aligned_storage<3>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 2, ""); static_assert(sizeof(T1) == 4, ""); } { typedef std::aligned_storage<4>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 4, ""); static_assert(sizeof(T1) == 4, ""); } { typedef std::aligned_storage<5>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 4, ""); static_assert(sizeof(T1) == 8, ""); } { typedef std::aligned_storage<7>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 4, ""); static_assert(sizeof(T1) == 8, ""); } { typedef std::aligned_storage<8>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 8, ""); static_assert(sizeof(T1) == 8, ""); } { typedef std::aligned_storage<9>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 8, ""); static_assert(sizeof(T1) == 16, ""); } { typedef std::aligned_storage<15>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 8, ""); static_assert(sizeof(T1) == 16, ""); } // Use alignof(std::max_align_t) below to find the max alignment instead of // hardcoding it, because it's different on different platforms. // (For example 8 on arm and 16 on x86.) #if __cplusplus < 201103L #define alignof __alignof__ #endif { typedef std::aligned_storage<16>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == alignof(std::max_align_t), ""); static_assert(sizeof(T1) == 16, ""); } { typedef std::aligned_storage<17>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == alignof(std::max_align_t), ""); static_assert(sizeof(T1) == 16 + alignof(std::max_align_t), ""); } { typedef std::aligned_storage<10>::type T1; #if _LIBCPP_STD_VER > 11 static_assert(std::is_same, T1>::value, "" ); #endif static_assert(std::alignment_of::value == 8, ""); static_assert(sizeof(T1) == 16, ""); } }