Files
clang-p2996/libcxx/test/std/input.output/string.streams/stringstream/stringstream.cons/mode.alloc.pass.cpp
Mark de Wever 4dee6411e0 [libc++] Implements LWG3130. (#101889)
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.
2024-08-06 19:47:56 +02:00

41 lines
1.2 KiB
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <sstream>
// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>>
// class basic_stringstream
// basic_stringstream(ios_base::openmode which, const Allocator& a);
#include <cassert>
#include <sstream>
#include "test_allocator.h"
#include "test_macros.h"
#include "operator_hijacker.h"
template <class CharT, class Allocator>
static void test(const Allocator& a) {
const std::basic_stringstream<CharT, std::char_traits<CharT>, Allocator> ss(std::ios_base::in, a);
assert(ss.rdbuf()->get_allocator() == a);
assert(ss.view().empty());
}
int main(int, char**) {
test<char>(test_allocator<char>(2));
test<char>(operator_hijacker_allocator<char>());
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<wchar_t>(test_allocator<wchar_t>(2));
test<wchar_t>(operator_hijacker_allocator<wchar_t>());
#endif
return 0;
}