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// REQUIRES: has-unix-headers
10// UNSUPPORTED: libcpp-hardening-mode=none
11// XFAIL: libcpp-hardening-mode=debug && availability-verbose_abort-missing
12
13// <streambuf>
14
15// template <class charT, class traits = char_traits<charT> >
16// class basic_streambuf;
17
18// void setg(char_type* gbeg, char_type* gnext, char_type* gend);
19
20#include <algorithm>
21#include <iterator>
22#include <streambuf>
23#include <string>
24
25#include "check_assertion.h"
26#include "make_string.h"
27#include "test_macros.h"
28
29template <class CharT>
30struct streambuf : public std::basic_streambuf<CharT> {
31 typedef std::basic_streambuf<CharT> base;
32
33 streambuf() {}
34
35 void setg(CharT* gbeg, CharT* gnext, CharT* gend) { base::setg(gbeg, gnext, gend); }
36};
37
38template <class CharT>
39void test() {
40 std::basic_string<CharT> str = MAKE_STRING(CharT, "ABCDEF");
41 CharT arr[6];
42 std::copy(str.begin(), str.end(), arr);
43
44 {
45 streambuf<CharT> buff;
46 TEST_LIBCPP_ASSERT_FAILURE(
47 buff.setg(std::begin(arr) + 1, std::begin(arr), std::end(arr)), "[gbeg, gnext) must be a valid range");
48 }
49 {
50 streambuf<CharT> buff;
51 TEST_LIBCPP_ASSERT_FAILURE(
52 buff.setg(std::begin(arr) + 1, std::begin(arr) + 1, std::begin(arr)), "[gbeg, gend) must be a valid range");
53 }
54 {
55 streambuf<CharT> buff;
56 TEST_LIBCPP_ASSERT_FAILURE(
57 buff.setg(std::begin(arr), std::begin(arr) + 3, std::begin(arr) + 2), "[gnext, gend) must be a valid range");
58 }
59}
60
61int main(int, char**) {
62 test<char>();
63#ifndef TEST_HAS_NO_WIDE_CHARACTERS
64 test<wchar_t>();
65#endif
66
67 return 0;
68}
69

source code of libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.get.area/setg.assert.pass.cpp