libstdc++-v3/testsuite/20_util/align/3.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // 2020-09-20 Glen Joseph Fernandes <glenjofe@gmail.com>
   4
   5 // Copyright (C) 2020-2021 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 terms
   9 // of the GNU General Public License as published by the Free Software
  10 // Foundation; either version 3, or (at your option) any later
  11 // version.
  12
  13 // This library is distributed in the hope that it will be useful, but
  14 // WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // C++11 [ptr.align] (20.6.5): std::align
  23
  24 #include <memory>
  25 #include <testsuite_hooks.h>
  26
  27 void test01()
  28 {
  29   void* p1 = reinterpret_cast<void*>(5);
  30   void* p2 = p1;
  31   std::size_t s1 = 3072;
  32   std::size_t s2 = s1;
  33   VERIFY(std::align(1024, static_cast<std::size_t>(-1), p1, s1) == nullptr);
  34   VERIFY(p1 == p2);
  35   VERIFY(s1 == s2);
  36 }
  37
  38 void test02()
  39 {
  40   void* p1 = reinterpret_cast<void*>(1);
  41   void* p2 = p1;
  42   std::size_t s1 = -1;
  43   std::size_t s2 = s1;
  44   VERIFY(std::align(2, static_cast<std::size_t>(-1), p1, s1) == nullptr);
  45   VERIFY(p1 == p2);
  46   VERIFY(s1 == s2);
  47 }
  48
  49 int main()
  50 {
  51   test01();
  52   test02();
  53 }