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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libstdc++-v3/] [testsuite/] [23_containers/] [unordered_set/] [max_load_factor/] [robustness.cc] - Rev 742
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// { dg-options "-std=gnu++0x" } // Copyright (C) 2011 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 // <http://www.gnu.org/licenses/>. #include <unordered_set> #include <limits> #include <ext/throw_allocator.h> #include <testsuite_hooks.h> void test01() { bool test __attribute__((unused)) = true; typedef std::numeric_limits<std::size_t> nl_size_t; std::unordered_set<int, std::hash<int>, std::equal_to<int>, __gnu_cxx::throw_allocator_limit<int> > us; int val = 0; for (; val != 100; ++val) { VERIFY( us.insert(val).second) ; VERIFY( us.load_factor() <= us.max_load_factor() ); } float cur_max_load_factor = us.max_load_factor(); int counter = 0; std::size_t thrown_exceptions = 0; while (true) { __gnu_cxx::limit_condition::set_limit(counter++); bool do_break = false; try { us.max_load_factor(.5f); do_break = true; } catch (const __gnu_cxx::forced_error&) { VERIFY( us.max_load_factor() == cur_max_load_factor ); ++thrown_exceptions; } // Lets check that unordered_set will still be correctly resized // when needed __gnu_cxx::limit_condition::set_limit(nl_size_t::max()); for (;;) { VERIFY( us.load_factor() <= us.max_load_factor() ); size_t nbkts = us.bucket_count(); VERIFY( us.insert(val++).second ); if (us.bucket_count() != nbkts) break; } if (do_break) break; } VERIFY( thrown_exceptions > 0 ); } int main() { test01(); return 0; }