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.
76 lines
2.1 KiB
C++
76 lines
2.1 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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// <fstream>
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// template <class charT, class traits = char_traits<charT> >
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// class basic_fstream
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// explicit basic_fstream(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out);
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#include <fstream>
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#include <cassert>
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#include "test_macros.h"
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#include "platform_support.h"
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#include "operator_hijacker.h"
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int main(int, char**)
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{
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std::string temp = get_temp_file_name();
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{
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std::fstream fs(temp,
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std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc);
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double x = 0;
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fs << 3.25;
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fs.seekg(0);
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fs >> x;
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assert(x == 3.25);
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}
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std::remove(temp.c_str());
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{
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std::basic_fstream<char, operator_hijacker_char_traits<char> > fs(
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temp, std::ios_base::in | std::ios_base::out | std::ios_base::trunc);
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std::basic_string<char, operator_hijacker_char_traits<char> > x;
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fs << "3.25";
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fs.seekg(0);
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fs >> x;
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assert(x == "3.25");
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}
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std::remove(temp.c_str());
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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std::wfstream fs(temp,
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std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc);
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double x = 0;
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fs << 3.25;
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fs.seekg(0);
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fs >> x;
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assert(x == 3.25);
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}
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std::remove(temp.c_str());
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{
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std::basic_fstream<wchar_t, operator_hijacker_char_traits<wchar_t> > fs(
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temp, std::ios_base::in | std::ios_base::out | std::ios_base::trunc);
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std::basic_string<wchar_t, operator_hijacker_char_traits<wchar_t> > x;
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fs << L"3.25";
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fs.seekg(0);
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fs >> x;
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assert(x == L"3.25");
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}
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std::remove(temp.c_str());
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#endif
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return 0;
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}
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