Index: include/bits/hashtable.h =================================================================== --- include/bits/hashtable.h (revision 213683) +++ include/bits/hashtable.h (working copy) @@ -1281,10 +1281,10 @@ _H1, _H2, _Hash, _RehashPolicy, _Traits>:: __rehash_policy(const _RehashPolicy& __pol) { - size_type __n_bkt = __pol._M_bkt_for_elements(_M_element_count); - __n_bkt = __pol._M_next_bkt(__n_bkt); - if (__n_bkt != _M_bucket_count) - _M_rehash(__n_bkt, _M_rehash_policy._M_state()); + auto __do_rehash = + __pol._M_need_rehash(_M_bucket_count, _M_element_count, 0); + if (__do_rehash.first) + _M_rehash(__do_rehash.second, _M_rehash_policy._M_state()); _M_rehash_policy = __pol; } Index: testsuite/23_containers/unordered_map/modifiers/61667.cc =================================================================== --- testsuite/23_containers/unordered_map/modifiers/61667.cc (revision 0) +++ testsuite/23_containers/unordered_map/modifiers/61667.cc (working copy) @@ -0,0 +1,44 @@ +// { dg-options "-std=gnu++11" } + +// Copyright (C) 2011-2014 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING3. If not see +// . + +#include +#include + +bool test __attribute__((unused)) = true; + +void test01() +{ + std::unordered_map um(20); + + std::size_t bkt_count = um.bucket_count(); + + um.max_load_factor(um.max_load_factor()); + + VERIFY( um.bucket_count() >= bkt_count ); + + um.max_load_factor(um.max_load_factor() * 2.f); + + VERIFY( um.bucket_count() >= bkt_count ); +} + +int main() +{ + test01(); + return 0; +}