libstdc++-v3/testsuite/23_containers/vector/data_access/1.cc

   1 // 2005-08-29  Paolo Carlini  <pcarlini@suse.de>
   2 //
   3 // Copyright (C) 2005-2019 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <vector>
  21 #include <testsuite_hooks.h>
  22
  23 // libstdc++/23578
  24 void test01()
  25 {
  26   typedef std::vector<int> vector_type;
  27
  28   {
  29     const int A[] = { 0, 1, 2, 3, 4 };
  30     vector_type v(A, A + 5);
  31     VERIFY( v.data() == &v.front() );
  32     int* pi = v.data();
  33     VERIFY( *pi == 0 );
  34   }
  35
  36   {
  37     const int A[] = { 4, 3, 2, 1, 0 };
  38     const vector_type cv(A, A + 5);
  39     VERIFY( cv.data() == &cv.front() );
  40     const int* pci = cv.data();
  41     VERIFY( *pci == 4 );
  42   }
  43 }
  44
  45 int main()
  46 {
  47   test01();
  48   return 0;
  49 }