libstdc++-v3/testsuite/26_numerics/random/seed_seq/cons/default.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-cstdint "" }
   3 //
   4 // 2008-12-05  Edward M. Smith-Rowland <3dw4rd@verizon.net>
   5 //
   6 // Copyright (C) 2008-2021 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13 //
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18 //
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 // 26.4.7.1 Class seed_seq [rand.util.seedseq]
  24
  25 #include <random>
  26 #include <testsuite_hooks.h>
  27
  28 static_assert( std::is_nothrow_default_constructible<std::seed_seq>::value,
  29                "LWG 3422" );
  30
  31 void
  32 test01()
  33 {
  34   std::seed_seq seq;
  35
  36   std::vector<unsigned> foo(10000);
  37   seq.generate(foo.begin(), foo.end());
  38
  39   VERIFY( seq.size() == 0 );
  40 }
  41
  42 int
  43 main()
  44 {
  45   test01();
  46   return 0;
  47 }