libstdc++-v3/testsuite/20_util/allocator/1.cc

   1 // 2001-06-14  Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 2004 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 20.4.1.1 allocator members
  22
  23 #include <memory>
  24 #include <stdexcept>
  25 #include <cstdlib>
  26 #include <testsuite_hooks.h>
  27
  28 struct gnu { };
  29
  30 bool check_new = false;
  31 bool check_delete = false;
  32
  33 void*
  34 operator new(std::size_t n) throw(std::bad_alloc)
  35 {
  36   check_new = true;
  37   return std::malloc(n);
  38 }
  39
  40 void operator delete(void *v) throw()
  41 {
  42   check_delete = true;
  43   return std::free(v);
  44 }
  45
  46 #if !__GXX_WEAK__ && _MT_ALLOCATOR_H
  47 // Explicitly instantiate for systems with no COMDAT or weak support.
  48 template class __gnu_cxx::__mt_alloc<gnu>;
  49 #endif
  50
  51 void test01()
  52 {
  53   bool test __attribute__((unused)) = true;
  54   std::allocator<gnu> obj;
  55
  56   // NB: These should work for various size allocation and
  57   // deallocations.  Currently, they only work as expected for sizes >
  58   // _MAX_BYTES as defined in stl_alloc.h, which happes to be 128.
  59   gnu* pobj = obj.allocate(256);
  60   VERIFY( check_new );
  61
  62   obj.deallocate(pobj, 256);
  63   VERIFY( check_delete );
  64 }
  65
  66 int main()
  67 {
  68   test01();
  69   return 0;
  70 }
  71