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// <forward_list>
10
11// reference front();
12// const_reference front() const;
13
14#include <forward_list>
15#include <cassert>
16#include <iterator>
17
18#include "test_macros.h"
19#include "min_allocator.h"
20
21int main(int, char**)
22{
23 {
24 typedef int T;
25 typedef std::forward_list<T> C;
26 const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
27 C c(std::begin(arr: t), std::end(arr: t));
28 assert(c.front() == 0);
29 c.front() = 10;
30 assert(c.front() == 10);
31 assert(*c.begin() == 10);
32 }
33 {
34 typedef int T;
35 typedef std::forward_list<T> C;
36 const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
37 const C c(std::begin(arr: t), std::end(arr: t));
38 assert(c.front() == 0);
39 assert(*c.begin() == 0);
40 }
41#if TEST_STD_VER >= 11
42 {
43 typedef int T;
44 typedef std::forward_list<T, min_allocator<T>> C;
45 const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
46 C c(std::begin(t), std::end(t));
47 assert(c.front() == 0);
48 c.front() = 10;
49 assert(c.front() == 10);
50 assert(*c.begin() == 10);
51 }
52 {
53 typedef int T;
54 typedef std::forward_list<T, min_allocator<T>> C;
55 const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
56 const C c(std::begin(t), std::end(t));
57 assert(c.front() == 0);
58 assert(*c.begin() == 0);
59 }
60#endif
61
62 return 0;
63}
64

source code of libcxx/test/std/containers/sequences/forwardlist/forwardlist.access/front.pass.cpp