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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
#define _GNU_SOURCE 1
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/param.h>
#ifndef MAX
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#endif
int
main (int argc, char *argv[])
{
size_t size = sysconf (_SC_PAGESIZE);
char *adr;
int result = 0;
adr = (char *) mmap (NULL, size, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if (adr == NULL)
{
if (errno == ENOSYS)
puts ("No test, mmap not available.");
else
{
printf ("mmaping failed: %m");
result = 1;
}
}
else
{
char dest[size];
int inner, middle, outer;
memset (adr, 'T', size);
/* strlen test */
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
{
for (inner = MAX (outer, size - 64); inner < size; ++inner)
{
adr[inner] = '\0';
if (strlen (&adr[outer]) != inner - outer)
{
printf ("strlen flunked for outer = %d, inner = %d\n",
outer, inner);
result = 1;
}
adr[inner] = 'T';
}
}
/* strchr test */
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
{
for (middle = MAX (outer, size - 64); middle < size; ++middle)
{
for (inner = middle; inner < size; ++inner)
{
char *cp;
adr[middle] = 'V';
adr[inner] = '\0';
cp = strchr (&adr[outer], 'V');
if ((inner == middle && cp != NULL)
|| (inner != middle
&& (cp - &adr[outer]) != middle - outer))
{
printf ("strchr flunked for outer = %d, middle = %d, "
"inner = %d\n", outer, middle, inner);
result = 1;
}
adr[inner] = 'T';
adr[middle] = 'T';
}
}
}
/* strrchr test */
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
{
for (middle = MAX (outer, size - 64); middle < size; ++middle)
{
for (inner = middle; inner < size; ++inner)
{
char *cp;
adr[middle] = 'V';
adr[inner] = '\0';
cp = strrchr (&adr[outer], 'V');
if ((inner == middle && cp != NULL)
|| (inner != middle
&& (cp - &adr[outer]) != middle - outer))
{
printf ("strrchr flunked for outer = %d, middle = %d, "
"inner = %d\n", outer, middle, inner);
result = 1;
}
adr[inner] = 'T';
adr[middle] = 'T';
}
}
}
/* strcpy test */
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
{
for (inner = MAX (outer, size - 64); inner < size; ++inner)
{
adr[inner] = '\0';
if (strcpy (dest, &adr[outer]) != dest
|| strlen (dest) != inner - outer)
{
printf ("strcpy flunked for outer = %d, inner = %d\n",
outer, inner);
result = 1;
}
adr[inner] = 'T';
}
}
/* stpcpy test */
for (outer = size - 1; outer >= MAX (0, size - 128); --outer)
{
for (inner = MAX (outer, size - 64); inner < size; ++inner)
{
adr[inner] = '\0';
if ((stpcpy (dest, &adr[outer]) - dest) != inner - outer)
{
printf ("stpcpy flunked for outer = %d, inner = %d\n",
outer, inner);
result = 1;
}
adr[inner] = 'T';
}
}
}
return result;
}
|
