Mercurial > hg > CbC > CbC_gcc
view libstdc++-v3/testsuite/23_containers/unordered_set/modifiers/92878_92947.cc @ 152:2b5abeee2509
update gcc11
author | anatofuz |
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date | Mon, 25 May 2020 07:50:57 +0900 |
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// { dg-options "-std=gnu++2a" } // { dg-do run { target c++2a } } // Copyright (C) 2020 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 <testsuite_hooks.h> struct aggressive_aggregate { int a; int b; }; bool operator==(const aggressive_aggregate& a, const aggressive_aggregate& b) { return a.a == b.a; }; namespace std { template<> struct hash<aggressive_aggregate> { size_t operator()(const aggressive_aggregate& x) const { return std::hash<int>()(x.a); } }; } void test_emplace() { std::unordered_set<aggressive_aggregate> x; auto emplaced = x.emplace(1, 2); VERIFY(emplaced.first->a == 1); VERIFY(emplaced.first->b == 2); emplaced = x.emplace(2); VERIFY(emplaced.first->a == 2); VERIFY(emplaced.first->b == 0); emplaced = x.emplace(); VERIFY(emplaced.first->a == 0); VERIFY(emplaced.first->b == 0); } void test_emplace_hint() { std::unordered_set<aggressive_aggregate> x; auto it = x.emplace_hint(x.begin(), 3, 2); VERIFY(it->a == 3); VERIFY(it->b == 2); it = x.emplace_hint(x.begin(), 4); VERIFY(it->a == 4); VERIFY(it->b == 0); it = x.emplace_hint(x.begin()); VERIFY(it->a == 0); VERIFY(it->b == 0); } int main() { test_emplace(); test_emplace_hint(); }