Mercurial > hg > CbC > CbC_gcc
view libstdc++-v3/testsuite/24_iterators/back_insert_iterator/constexpr.cc @ 152:2b5abeee2509
update gcc11
author | anatofuz |
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date | Mon, 25 May 2020 07:50:57 +0900 |
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// 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/>. // { dg-options "-std=gnu++2a" } // { dg-do compile { target c++2a } } #include <iterator> struct container { using value_type = int; constexpr int* begin() { return std::begin(data); } constexpr int* end() { return next; } constexpr void push_back(int val) { if (next == std::end(data)) throw val; *next++ = val; } int data[3]; int* next = std::begin(data); }; constexpr bool test01() { container c; std::back_insert_iterator<container> iter; iter = std::back_inserter(c); *iter++ = 1; int i = 2; *iter = i; *++iter = 3; return c.data[0] == 1 && c.data[1] == 2 && c.data[2] == 3; } static_assert( test01() );