1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#undef _GNU_SOURCE
18#include <features.h> // Get __BIONIC__ or __GLIBC__ so we can tell what we're using.
19
20#if defined(__GLIBC__)
21
22// At the time of writing, libcxx -- which is dragged in by gtest -- assumes
23// declarations from glibc of things that aren't available without __USE_GNU.
24// This means we can't even build this test (which is a problem because that
25// means it doesn't get included in CTS).
26// For glibc 2.15, the symbols in question are:
27//   at_quick_exit, quick_exit, vasprintf, strtoll_l, strtoull_l, and strtold_l.
28
29# if __GLIBC_PREREQ(2, 19)
30#  error check whether we can build this now...
31# endif
32
33#else
34
35#include <string.h>
36
37#include <errno.h>
38#include <gtest/gtest.h>
39
40TEST(string, posix_strerror_r) {
41  char buf[256];
42
43  // Valid.
44  ASSERT_EQ(0, strerror_r(0, buf, sizeof(buf)));
45  ASSERT_STREQ("Success", buf);
46  ASSERT_EQ(0, strerror_r(1, buf, sizeof(buf)));
47  ASSERT_STREQ("Operation not permitted", buf);
48
49  // Invalid.
50  ASSERT_EQ(0, strerror_r(-1, buf, sizeof(buf)));
51  ASSERT_STREQ("Unknown error -1", buf);
52  ASSERT_EQ(0, strerror_r(1234, buf, sizeof(buf)));
53  ASSERT_STREQ("Unknown error 1234", buf);
54
55  // Buffer too small.
56  errno = 0;
57  memset(buf, 0, sizeof(buf));
58  ASSERT_EQ(-1, strerror_r(4567, buf, 2));
59  ASSERT_STREQ("U", buf);
60  // The POSIX strerror_r sets errno to ERANGE (the GNU one doesn't).
61  ASSERT_EQ(ERANGE, errno);
62}
63
64#endif
65