blob: d7b63084bfff3d8cecca565ab71f688b9a2f7019 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/* Test the "ignore-value" module.
Copyright (C) 2011-2018 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Eric Blake. */
#include <config.h>
#include "ignore-value.h"
#include <stdio.h>
#ifndef _GL_ATTRIBUTE_RETURN_CHECK
# if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
# define _GL_ATTRIBUTE_RETURN_CHECK
# else
# define _GL_ATTRIBUTE_RETURN_CHECK __attribute__((__warn_unused_result__))
# endif
#endif
struct s { int i; };
static char doChar (void) _GL_ATTRIBUTE_RETURN_CHECK;
static int doInt (void) _GL_ATTRIBUTE_RETURN_CHECK;
static off_t doOff (void) _GL_ATTRIBUTE_RETURN_CHECK;
static void *doPtr (void) _GL_ATTRIBUTE_RETURN_CHECK;
static struct s doStruct (void) _GL_ATTRIBUTE_RETURN_CHECK;
static char
doChar (void)
{
return 0;
}
static int
doInt (void)
{
return 0;
}
static off_t
doOff (void)
{
return 0;
}
static void *
doPtr (void)
{
return NULL;
}
static struct s
doStruct (void)
{
static struct s s1;
return s1;
}
int
main (void)
{
/* If this test can compile with -Werror and the same warnings as
the rest of the project, then we are properly silencing warnings
about ignored return values. */
ignore_value (doChar ());
ignore_value (doInt ());
ignore_value (doOff ());
ignore_value (doPtr ());
ignore_value (doStruct ());
return 0;
}
|
