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 <stdio.h>
17 #include <errno.h>
18 #include "test.h"
19
20 /**
21 * @tc.name : __errno_location_0100
22 * @tc.desc : Test the __errno_location method to get the errno address
23 * @tc.level : Level 0
24 */
__errno_location_0100(void)25 void __errno_location_0100(void)
26 {
27 int result = *__errno_location();
28 if (result != 0) {
29 t_error("%s __errno_location get errno code is %d are not want 0\n", __func__, result);
30 }
31 }
32
33 /**
34 * @tc.name : __errno_location_0200
35 * @tc.desc : The result returned by __errno_location when the value of errno has just been changed
36 * @tc.level : Level 1
37 */
__errno_location_0200(void)38 void __errno_location_0200(void)
39 {
40 errno = 10;
41 int result = *__errno_location();
42 if (result != errno) {
43 t_error("%s __errno_location get errno code is %d are not want %d\n", __func__, result, errno);
44 }
45 errno = 0;
46 }
47
48 /**
49 * @tc.name : __errno_location_0300
50 * @tc.desc : Test the address returned by __errno_location and compare it with the errno address
51 * @tc.level : Level 1
52 */
__errno_location_0300(void)53 void __errno_location_0300(void)
54 {
55 int *result = __errno_location();
56 if (result != &errno) {
57 t_error("%s __errno_location get ptr is %p are not want %p\n", __func__, result, &errno);
58 }
59 }
60
main(int argc, char *argv[])61 int main(int argc, char *argv[])
62 {
63 __errno_location_0100();
64 __errno_location_0200();
65 __errno_location_0300();
66 return t_status;
67 }