4dee6411e0
This adds addressof at the required places in [input.output]. Some of the new tests failed since string used operator& internally. These have been fixed too. Note the new fstream tests perform output to a basic_string instead of a double. Using a double requires num_get specialization num_get<CharT, istreambuf_iterator<CharT, char_traits_operator_hijacker<CharT>> This facet is not present in the locale database so the conversion would fail due to a missing locale facet. Using basic_string avoids using the locale. As a drive-by fixes several bugs in the ofstream.cons tests. These tested ifstream instead of ofstream with an open mode. Implements: - LWG3130 [input.output] needs many addressof Closes #100246.
102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03
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// <string>
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// basic_string(basic_string&& str, const Allocator& alloc); // constexpr since C++20
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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#include "test_allocator.h"
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#include "min_allocator.h"
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#include "asan_testing.h"
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#include "operator_hijacker.h"
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template <class S>
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TEST_CONSTEXPR_CXX20 void test(S s0, const typename S::allocator_type& a) {
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S s1 = s0;
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S s2(std::move(s0), a);
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LIBCPP_ASSERT(s2.__invariants());
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LIBCPP_ASSERT(s0.__invariants());
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assert(s2 == s1);
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assert(s2.capacity() >= s2.size());
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assert(s2.get_allocator() == a);
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LIBCPP_ASSERT(is_string_asan_correct(s0));
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LIBCPP_ASSERT(is_string_asan_correct(s1));
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LIBCPP_ASSERT(is_string_asan_correct(s2));
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}
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TEST_CONSTEXPR_CXX20 bool test() {
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test_allocator_statistics alloc_stats;
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{
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typedef test_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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#if TEST_STD_VER > 14
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static_assert((noexcept(S{})), "");
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#elif TEST_STD_VER >= 11
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static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "");
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#endif
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test(S(), A(3, &alloc_stats));
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test(S("1"), A(5, &alloc_stats));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A(7, &alloc_stats));
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}
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int alloc_count = alloc_stats.alloc_count;
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{
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typedef test_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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#if TEST_STD_VER > 14
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static_assert((noexcept(S{})), "");
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#elif TEST_STD_VER >= 11
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static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "");
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#endif
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S s1("Twas brillig, and the slivy toves did gyre and gymbal in the wabe", A(&alloc_stats));
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S s2(std::move(s1), A(1, &alloc_stats));
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}
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assert(alloc_stats.alloc_count == alloc_count);
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{
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typedef min_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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#if TEST_STD_VER > 14
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static_assert((noexcept(S{})), "");
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#elif TEST_STD_VER >= 11
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static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "");
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#endif
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test(S(), A());
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test(S("1"), A());
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A());
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}
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{
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typedef operator_hijacker_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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#if TEST_STD_VER > 14
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static_assert((noexcept(S{})), "");
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#elif TEST_STD_VER >= 11
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static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "");
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#endif
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test(S(), A());
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test(S("1"), A());
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A());
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}
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return true;
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}
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int main(int, char**) {
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test();
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#if TEST_STD_VER > 17
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static_assert(test());
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#endif
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return 0;
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}
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