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

   1 // Test for Container using non-standard pointer types.
   2
   3 // Copyright (C) 2008, 2009
   4 // 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
  22 #include <vector>
  23 #include <testsuite_hooks.h>
  24 #include <ext/extptr_allocator.h>
  25
  26 // libstdc++/23578
  27 void test01()
  28 {
  29   bool test __attribute__((unused)) = true;
  30   typedef std::vector<int, __gnu_cxx::_ExtPtr_allocator<int> > vector_type;
  31
  32   {
  33     const int A[] = { 0, 1, 2, 3, 4 };
  34     vector_type v(A, A + 5);
  35     VERIFY( v.data() == &v.front() );
  36     int* pi = &* v.data();
  37     VERIFY( *pi == 0 );
  38   }
  39
  40   {
  41     const int A[] = { 4, 3, 2, 1, 0 };
  42     const vector_type cv(A, A + 5);
  43     VERIFY( cv.data() == &cv.front() );
  44     const int* pci = &* cv.data();
  45     VERIFY( *pci == 4 );
  46   }
  47 }
  48
  49 int main()
  50 {
  51   test01();
  52   return 0;
  53 }