libstdc++-v3/testsuite/20_util/allocator/lwg3190.cc

   1 // Copyright (C) 2020-2024 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19 // { dg-require-effective-target hosted }
  20
  21 #include <memory>
  22 #include <new>
  23 #include <limits>
  24 #include <testsuite_hooks.h>
  25
  26 // LWG 3190. std::allocator::allocate sometimes returns too little storage
  27
  28 void
  29 test01()
  30 {
  31   struct A { char biiiiig[1 << 16]; };
  32   std::allocator<A> a;
  33   try
  34   {
  35     std::size_t max = std::numeric_limits<std::size_t>::max() / sizeof(A);
  36     A* p = a.allocate(max + 1);
  37     throw p;
  38   }
  39 #if __cplusplus >= 201103L
  40   catch (const std::bad_array_new_length&)
  41   {
  42   }
  43 #endif
  44   catch (const std::bad_alloc&)
  45   {
  46     VERIFY( __cplusplus < 201103L );
  47   }
  48 }
  49
  50 int
  51 main()
  52 {
  53   test01();
  54 }