1 // { dg-options "-std=gnu++0x" } 2 3 // Copyright (C) 2012-2013 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 <unordered_map> 21 #include <testsuite_hooks.h> 22 23 bool test __attribute__((unused)) = true; 24 test01()25void test01() 26 { 27 const int N = 1000; 28 29 typedef std::unordered_map<int, int> Map; 30 Map m; 31 m.reserve(N); 32 33 std::size_t bkts = m.bucket_count(); 34 for (int i = 0; i != N; ++i) 35 { 36 m.insert(std::make_pair(i, i)); 37 // As long as we insert less than the reserved number of elements we 38 // shouldn't experiment any rehash. 39 VERIFY( m.bucket_count() == bkts ); 40 } 41 } 42 main()43int main() 44 { 45 test01(); 46 return 0; 47 } 48