1/* Test wide output conversion for warn.
2 Copyright (C) 2018-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <err.h>
20#include <errno.h>
21#include <stdio.h>
22#include <stdlib.h>
23#include <string.h>
24#include <support/check.h>
25#include <support/xmemstream.h>
26#include <wchar.h>
27
28/* Used to trigger the large-string path in __fxprintf. */
29#define PADDING \
30 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
31 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
32 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
33
34#define LPADDING \
35 L"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
36 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" \
37 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
38
39
40static void
41one_test (const char *message, int error_code, const wchar_t *expected)
42{
43 wchar_t *buffer = NULL;
44 size_t length = 0;
45 FILE *fp = open_wmemstream (bufloc: &buffer, sizeloc: &length);
46 TEST_VERIFY_EXIT (fp != NULL);
47 FILE *old_stderr = stderr;
48 stderr = fp;
49 errno = error_code;
50 switch (error_code)
51 {
52 case E2BIG:
53 warn ("%s with padding " PADDING, message);
54 break;
55 case EAGAIN:
56 warn ("%s", message);
57 break;
58 case -1:
59 warnx ("%s", message);
60 break;
61 case -2:
62 warnx ("%s with padding " PADDING, message);
63 break;
64 }
65 stderr = old_stderr;
66 TEST_VERIFY_EXIT (!ferror (fp));
67 TEST_COMPARE (fclose (fp), 0);
68 if (wcscmp (s1: buffer, s2: expected) != 0)
69 FAIL_EXIT1 ("unexpected output: %ls", buffer);
70 free (ptr: buffer);
71}
72
73static int
74do_test (void)
75{
76 one_test (message: "no errno", error_code: -1,
77 expected: L"tst-warn-wide: no errno\n");
78 one_test (message: "no errno", error_code: -2,
79 expected: L"tst-warn-wide: no errno with padding " PADDING "\n");
80 one_test (message: "with errno", EAGAIN,
81 expected: L"tst-warn-wide: with errno: Resource temporarily unavailable\n");
82 one_test (message: "with errno", E2BIG,
83 expected: L"tst-warn-wide: with errno with padding " PADDING
84 ": Argument list too long\n");
85 return 0;
86}
87
88#include <support/test-driver.c>
89

source code of glibc/misc/tst-warn-wide.c