1 /* Test of strsignal() function.
2 Copyright (C) 2008-2021 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, see <https://www.gnu.org/licenses/>. */
16
17 /* Written by Colin Watson <cjwatson@debian.org>, 2008. */
18
19 #include <config.h>
20
21 #include <string.h>
22
23 #include "signature.h"
24 SIGNATURE_CHECK (strsignal, char *, (int));
25
26 #include <signal.h>
27
28 #include "macros.h"
29
30 #if HAVE_DECL_SYS_SIGLIST
31 # define ASSERT_DESCRIPTION(actual, expected)
32 #else
33 /* In this case, we can guarantee some signal descriptions.
34 But allow the actual result to be longer than the expected result. */
35 # define ASSERT_DESCRIPTION(actual, expected) \
36 ASSERT (strncmp (actual, expected, strlen (expected)) == 0)
37 #endif
38
39 int
main(void)40 main (void)
41 {
42 /* Work around bug in cygwin 1.5.25 <string.h> by declaring str as
43 const char *, even though strsignal is supposed to return char *.
44 At any rate, this doesn't hurt, since POSIX 200x states that "The
45 string pointed to shall not be modified by the application." */
46 const char *str;
47
48 /* We try a couple of signals, since not all signals are supported
49 everywhere. Notwithstanding the #ifdef for neatness, SIGINT should in
50 fact be available on all platforms. */
51
52 #ifdef SIGHUP
53 str = strsignal (SIGHUP);
54 ASSERT (str);
55 ASSERT (*str);
56 ASSERT_DESCRIPTION (str, "Hangup");
57 #endif
58
59 #ifdef SIGINT
60 str = strsignal (SIGINT);
61 ASSERT (str);
62 ASSERT (*str);
63 ASSERT_DESCRIPTION (str, "Interrupt");
64 #endif
65
66 /* Test that for out-of-range signal numbers the result is usable. */
67
68 str = strsignal (-1);
69 ASSERT (str);
70 ASSERT (str != (char *) -1);
71 ASSERT (strlen (str));
72
73 str = strsignal (9249234);
74 ASSERT (str);
75 ASSERT (str != (char *) -1);
76 ASSERT (strlen (str));
77
78 return 0;
79 }
80