Mercurial > hg > CbC > CbC_gcc
diff libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc @ 152:2b5abeee2509
update gcc11
author | anatofuz |
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date | Mon, 25 May 2020 07:50:57 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc Mon May 25 07:50:57 2020 +0900 @@ -0,0 +1,140 @@ +// 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 run { target c++2a } } + +#include <algorithm> +#include <cstring> +#include <deque> +#include <list> +#include <memory> +#include <span> +#include <string> +#include <vector> + +#include <testsuite_hooks.h> +#include <testsuite_iterators.h> + +using __gnu_test::test_forward_range; + +namespace ranges = std::ranges; + +template<typename T> +void +test01() +{ + static_assert(std::default_initializable<T>); + static_assert(std::equality_comparable<T>); + + for (int k = 0; k < 6; k++) + { + constexpr int size = 1024; + auto buffer = std::unique_ptr<char[]>(new char[sizeof(T)*size]); + std::span<T> rx((T *)buffer.get(), size); + + T t{}; + + auto i = rx.begin(); + if (k == 0) + i = ranges::uninitialized_value_construct(rx.begin(), rx.end()); + else if (k == 1) + i = ranges::uninitialized_value_construct(rx); + else if (k == 2) + i = ranges::uninitialized_value_construct_n(rx.begin(), 1024); + else if (k == 3) + i = ranges::uninitialized_value_construct(rx.begin(), rx.end()); + else if (k == 4) + i = ranges::uninitialized_value_construct(std::as_const(rx)); + else if (k == 5) + i = ranges::uninitialized_value_construct_n(rx.begin(), 1024); + else + __builtin_abort(); + + VERIFY( i == rx.end() ); + VERIFY( ranges::find_if(rx, [&t](const T& v) { return t != v; }) == i ); + + ranges::destroy(rx); + } +} + +struct X +{ + static constexpr int limit = 67; + static inline int construct_count = 0; + static inline int destruct_count = 0; + + struct exception {}; + + bool live = false; + + X() + { + if (construct_count >= limit) + throw exception{}; + construct_count++; + live = true; + } + + ~X() + { + VERIFY( live ); + live = false; + destruct_count++; + } +}; + +template<bool test_sized> +void +test02() +{ + constexpr int size = 100; + auto buffer = std::unique_ptr<char[]>(new char[sizeof(X)*size]); + test_forward_range<X> rx((X *)buffer.get(), (X *)buffer.get() + size); + try + { + X::construct_count = 0; + X::destruct_count = 0; + if constexpr (test_sized) + ranges::uninitialized_value_construct_n(rx.begin(), size); + else + ranges::uninitialized_value_construct(rx); + VERIFY( false && "exception not thrown" ); + } + catch (const X::exception&) + { + VERIFY( X::construct_count == X::limit ); + VERIFY( X::destruct_count == X::limit ); + } +} + +int +main() +{ + test01<char>(); + test01<int>(); + test01<long long>(); + test01<float>(); + test01<double>(); + test01<std::vector<char>>(); + test01<std::string>(); + test01<std::deque<double>>(); + test01<std::list<std::vector<std::deque<double>>>>(); + test01<std::unique_ptr<std::string>>(); + + test02<false>(); + test02<true>(); +}