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

   1 // { dg-options "-std=gnu++0x" }
   2 // 2007-09-17  Paolo Carlini  <pcarlini@suse.de>
   3 //
   4 // Copyright (C) 2007-2013 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <type_traits>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_tr1.h>
  24
  25 struct MSAlignType { } __attribute__((__aligned__));
  26
  27 void test01()
  28 {
  29   bool test __attribute__((unused)) = true;
  30   using std::aligned_storage;
  31   using std::alignment_of;
  32   using namespace __gnu_test;
  33
  34   const std::size_t align_c = alignment_of<char>::value;
  35   VERIFY( (sizeof(aligned_storage<4, align_c>::type) >= 4) );
  36   VERIFY( (__alignof__(aligned_storage<4, align_c>::type) == align_c) );
  37
  38   const std::size_t align_s = alignment_of<short>::value;
  39   VERIFY( (sizeof(aligned_storage<1, align_s>::type) >= 1) );
  40   VERIFY( (__alignof__(aligned_storage<1, align_s>::type) == align_s) );
  41
  42   const std::size_t align_i = alignment_of<int>::value;
  43   VERIFY( (sizeof(aligned_storage<7, align_i>::type) >= 7) );
  44   VERIFY( (__alignof__(aligned_storage<7, align_i>::type) == align_i) );
  45
  46   const std::size_t align_d = alignment_of<double>::value;
  47   VERIFY( (sizeof(aligned_storage<2, align_d>::type) >= 2) );
  48   VERIFY( (__alignof__(aligned_storage<2, align_d>::type) == align_d) );
  49
  50   const std::size_t align_ai = alignment_of<int[4]>::value;
  51   VERIFY( (sizeof(aligned_storage<20, align_ai>::type) >= 20) );
  52   VERIFY( (__alignof__(aligned_storage<20, align_ai>::type) == align_ai) );
  53
  54   const std::size_t align_ct = alignment_of<ClassType>::value;
  55   VERIFY( (sizeof(aligned_storage<11, align_ct>::type) >= 11) );
  56   VERIFY( (__alignof__(aligned_storage<11, align_ct>::type) == align_ct) );
  57
  58   const std::size_t align_msa = alignment_of<MSAlignType>::value;
  59   VERIFY( (sizeof(aligned_storage<5>::type) >= 5) );
  60   VERIFY( (__alignof__(aligned_storage<5>::type) == align_msa) );
  61 }
  62
  63 int main()
  64 {
  65   test01();
  66   return 0;
  67 }