libstdc++-v3/testsuite/20_util/aligned_storage/value.cc

   1 // { dg-options "-std=gnu++0x" }
   2 // { dg-do compile }
   3 // 2007-09-17  Paolo Carlini  <pcarlini@suse.de>
   4 //
   5 // Copyright (C) 2007-2014 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 #include <type_traits>
  23 #include <testsuite_tr1.h>
  24
  25 struct MSAlignType { } __attribute__((__aligned__));
  26
  27 void test01()
  28 {
  29   using std::aligned_storage;
  30   using std::alignment_of;
  31   using namespace __gnu_test;
  32
  33   const std::size_t align_c = alignment_of<char>::value;
  34   static_assert(sizeof(aligned_storage<4, align_c>::type) >= 4, "");
  35   static_assert(__alignof__(aligned_storage<4, align_c>::type) == align_c, "");
  36
  37   const std::size_t align_s = alignment_of<short>::value;
  38   static_assert(sizeof(aligned_storage<1, align_s>::type) >= 1, "");
  39   static_assert(__alignof__(aligned_storage<1, align_s>::type) == align_s, "");
  40
  41   const std::size_t align_i = alignment_of<int>::value;
  42   static_assert(sizeof(aligned_storage<7, align_i>::type) >= 7, "");
  43   static_assert(__alignof__(aligned_storage<7, align_i>::type) == align_i, "");
  44
  45   const std::size_t align_d = alignment_of<double>::value;
  46   static_assert(sizeof(aligned_storage<2, align_d>::type) >= 2, "");
  47   static_assert(__alignof__(aligned_storage<2, align_d>::type) == align_d, "");
  48
  49   const std::size_t align_ai = alignment_of<int[4]>::value;
  50   static_assert(sizeof(aligned_storage<20, align_ai>::type) >= 20, "");
  51   static_assert(__alignof__(aligned_storage<20, align_ai>::type) == align_ai,
  52                 "");
  53
  54   const std::size_t align_ct = alignment_of<ClassType>::value;
  55   static_assert(sizeof(aligned_storage<11, align_ct>::type) >= 11, "");
  56   static_assert(__alignof__(aligned_storage<11, align_ct>::type) == align_ct,
  57                 "");
  58
  59   const std::size_t align_msa = alignment_of<MSAlignType>::value;
  60   static_assert(sizeof(aligned_storage<5>::type) >= 5, "");
  61   static_assert(__alignof__(aligned_storage<5>::type) == align_msa, "");
  62 }