1// { dg-options "-std=gnu++11" } 2 3// 2010-08-13 Paolo Carlini <paolo.carlini@oracle.com> 4// 5// Copyright (C) 2010-2015 Free Software Foundation, Inc. 6// 7// This file is part of the GNU ISO C++ Library. This library is free 8// software; you can redistribute it and/or modify it under the 9// terms of the GNU General Public License as published by the 10// Free Software Foundation; either version 3, or (at your option) 11// any later version. 12// 13// This library is distributed in the hope that it will be useful, 14// but WITHOUT ANY WARRANTY; without even the implied warranty of 15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16// GNU General Public License for more details. 17// 18// You should have received a copy of the GNU General Public License along 19// with this library; see the file COPYING3. If not see 20// <http://www.gnu.org/licenses/>. 21 22#include <unordered_set> 23#include <testsuite_hooks.h> 24 25// libstdc++/26132 26void test01() 27{ 28 bool test __attribute__((unused)) = true; 29 30 for (float lf = 1.0; lf < 101.0; lf *= 10.0) 31 for (int size = 1; size <= 6561; size *= 3) 32 { 33 std::unordered_set<int> us1; 34 typedef std::unordered_set<int>::size_type size_type; 35 36 us1.max_load_factor(10.0); 37 38 for (int i = 0; i < size; ++i) 39 us1.insert(i); 40 41 us1.max_load_factor(lf); 42 43 for (int i = 1; i <= 6561; i *= 81) 44 { 45 const size_type n = size * 81 / i; 46 us1.rehash(n); 47 VERIFY( us1.bucket_count() > us1.size() / us1.max_load_factor() ); 48 VERIFY( us1.bucket_count() >= n ); 49 } 50 } 51} 52 53int main() 54{ 55 test01(); 56 return 0; 57} 58