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.
80 lines
2.5 KiB
C++
80 lines
2.5 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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// <string>
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// void swap(basic_string& s); // constexpr since C++20
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#include <string>
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#include <stdexcept>
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#include <algorithm>
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#include <cassert>
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#include "test_macros.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 s1, S s2) {
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S s1_ = s1;
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S s2_ = s2;
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s1.swap(s2);
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LIBCPP_ASSERT(s1.__invariants());
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LIBCPP_ASSERT(s2.__invariants());
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assert(s1 == s2_);
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assert(s2 == s1_);
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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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template <class S>
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TEST_CONSTEXPR_CXX20 void test_string() {
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test(S(""), S(""));
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test(S(""), S("12345"));
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test(S(""), S("1234567890"));
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test(S(""), S("12345678901234567890"));
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test(S("abcde"), S(""));
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test(S("abcde"), S("12345"));
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test(S("abcde"), S("1234567890"));
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test(S("abcde"), S("12345678901234567890"));
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test(S("abcdefghij"), S(""));
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test(S("abcdefghij"), S("12345"));
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test(S("abcdefghij"), S("1234567890"));
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test(S("abcdefghij"), S("12345678901234567890"));
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test(S("abcdefghijklmnopqrst"), S(""));
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test(S("abcdefghijklmnopqrst"), S("12345"));
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test(S("abcdefghijklmnopqrst"), S("1234567890"));
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test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
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test(S("abcdefghijklmnopqrstabcdefghijklmnopqrst"), S(""));
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test(S("abcdefghijklmnopqrstabcdefghijklmnopqrst"), S("12345"));
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test(S("abcdefghijklmnopqrstabcdefghijklmnopqrst"), S("1234567890"));
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test(S("abcdefghijklmnopqrstabcdefghijklmnopqrst"), S("12345678901234567890"));
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test(S("abcdefghijklmnopqrstabcdefghijklmnopqrst"), S("12345678901234567890abcdefghijklmnopqrst"));
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}
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TEST_CONSTEXPR_CXX20 bool test() {
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test_string<std::string>();
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#if TEST_STD_VER >= 11
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test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
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test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();
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test_string<std::basic_string<char, std::char_traits<char>, operator_hijacker_allocator<char>>>();
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#endif
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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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