1/*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *   http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <errno.h>
17#include <unistd.h>
18#include "test.h"
19
20void *get_brk()
21{
22    return sbrk(0);
23}
24
25/**
26 * @tc.name      : brk_0100
27 * @tc.desc      : Verify Change the location of program breakpoints
28 * @tc.level     : Level 0
29 */
30void brk_0100(void)
31{
32    errno = 0;
33    void *initial_break = get_brk();
34    void *new_break = (void *)((uintptr_t)(initial_break) + 1);
35
36    int result = brk(new_break);
37    if (result == -1) {
38        if (errno != ENOMEM) {
39            t_error("%s errno should be ENOMEM\n", __func__);
40        }
41    } else {
42        if (result != 0) {
43            t_error("%s brk failed\n", __func__);
44        }
45        if (get_brk() < new_break) {
46            t_error("%s brk invalid\n", __func__);
47        }
48    }
49}
50
51int main(int argc, char *argv[])
52{
53    brk_0100();
54    return t_status;
55}