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.
96 lines
2.7 KiB
C++
96 lines
2.7 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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// <sstream>
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// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
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// class basic_istringstream
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// explicit basic_istringstream(ios_base::openmode which = ios_base::in); // before C++20
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// basic_istringstream() : basic_istringstream(ios_base::in) {} // C++20
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// explicit basic_istringstream(ios_base::openmode which); // C++20
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#include <sstream>
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#include <cassert>
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#include "test_macros.h"
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#include "operator_hijacker.h"
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#if TEST_STD_VER >= 11
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#include "test_convertible.h"
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template <typename S>
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void test() {
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static_assert(test_convertible<S>(), "");
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static_assert(!test_convertible<S, std::ios_base::openmode>(), "");
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}
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#endif
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int main(int, char**)
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{
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{
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std::istringstream ss;
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assert(ss.rdbuf() != nullptr);
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assert(ss.good());
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assert(ss.str() == "");
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}
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{
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std::basic_istringstream<char, std::char_traits<char>, operator_hijacker_allocator<char> > ss;
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assert(ss.rdbuf() != nullptr);
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assert(ss.good());
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assert(ss.str() == "");
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}
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{
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std::istringstream ss(std::ios_base::in);
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assert(ss.rdbuf() != nullptr);
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assert(ss.good());
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assert(ss.str() == "");
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}
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{
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std::basic_istringstream<char, std::char_traits<char>, operator_hijacker_allocator<char> > ss(std::ios_base::in);
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assert(ss.rdbuf() != nullptr);
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assert(ss.good());
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assert(ss.str() == "");
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}
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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std::wistringstream ss;
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assert(ss.rdbuf() != nullptr);
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assert(ss.good());
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assert(ss.str() == L"");
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}
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{
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std::wistringstream ss(std::ios_base::in);
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assert(ss.rdbuf() != nullptr);
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assert(ss.good());
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assert(ss.str() == L"");
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}
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{
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std::basic_istringstream<wchar_t, std::char_traits<wchar_t>, operator_hijacker_allocator<wchar_t> > ss;
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assert(ss.rdbuf() != nullptr);
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assert(ss.good());
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assert(ss.str() == L"");
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}
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{
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std::basic_istringstream<wchar_t, std::char_traits<wchar_t>, operator_hijacker_allocator<wchar_t> > ss(
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std::ios_base::in);
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assert(ss.rdbuf() != nullptr);
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assert(ss.good());
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assert(ss.str() == L"");
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}
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#endif
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#if TEST_STD_VER >= 11
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test<std::istringstream>();
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# ifndef TEST_HAS_NO_WIDE_CHARACTERS
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test<std::wistringstream>();
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# endif
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#endif
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return 0;
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}
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