1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14, c++17
10
11// <sstream>
12
13// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>>
14// class basic_ostringstream
15
16// template <class SAlloc>
17// basic_ostringstream(const basic_string<char_type, traits_type, SAlloc>& s, const Allocator& a)
18// : basic_ostringstream(s, ios_base::out, a) {}
19
20#include <sstream>
21#include <cassert>
22
23#include "make_string.h"
24#include "test_allocator.h"
25#include "test_macros.h"
26#include "operator_hijacker.h"
27
28#define STR(S) MAKE_STRING(CharT, S)
29#define SV(S) MAKE_STRING_VIEW(CharT, S)
30
31template <class CharT, class Allocator>
32static void test(const Allocator& a) {
33 const std::basic_string<CharT> s(STR("testing"));
34 const std::basic_ostringstream<CharT, std::char_traits<CharT>, Allocator> ss(s, a);
35 assert(ss.rdbuf()->get_allocator() == a);
36 assert(ss.view() == SV("testing"));
37}
38
39int main(int, char**) {
40 test<char>(test_allocator<char>(2));
41 test<char>(operator_hijacker_allocator<char>());
42#ifndef TEST_HAS_NO_WIDE_CHARACTERS
43 test<wchar_t>(test_allocator<wchar_t>(2));
44 test<wchar_t>(operator_hijacker_allocator<wchar_t>());
45#endif
46 return 0;
47}
48

source code of libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/string.alloc.pass.cpp