1 /* Copyright (C) 2000 Free Software Foundation.
2
3 Ensure builtin strlen, strcmp, strchr, strrchr and strncpy
4 perform correctly.
5
6 Written by Jakub Jelinek, 11/7/2000. */
7
8 extern void abort (void);
9 extern __SIZE_TYPE__ strlen (const char *);
10 extern int strcmp (const char *, const char *);
11 extern char *strchr (const char *, int);
12 extern char *strrchr (const char *, int);
13 extern char *strncpy (char *, const char *, __SIZE_TYPE__);
14 extern void *memset (void *, int, __SIZE_TYPE__);
15 extern int memcmp (const void *, const void *, __SIZE_TYPE__);
16
17 int x = 6;
18 int y = 1;
19 char *bar = "hi world";
20 char buf [64];
21
main()22 int main()
23 {
24 const char *const foo = "hello world";
25 char dst [64];
26
27 if (strlen (bar) != 8)
28 abort ();
29 if (strlen (bar + (++x & 2)) != 6)
30 abort ();
31 if (x != 7)
32 abort ();
33 if (strlen (foo + (x++, 6)) != 5)
34 abort ();
35 if (x != 8)
36 abort ();
37 if (strlen (foo + (++x & 1)) != 10)
38 abort ();
39 if (x != 9)
40 abort ();
41 if (strcmp (foo + (x -= 6), "lo world"))
42 abort ();
43 if (x != 3)
44 abort ();
45 if (strcmp (foo, bar) >= 0)
46 abort ();
47 if (strcmp (foo, bar + (x++ & 1)) >= 0)
48 abort ();
49 if (x != 4)
50 abort ();
51 if (strchr (foo + (x++ & 7), 'l') != foo + 9)
52 abort ();
53 if (x != 5)
54 abort ();
55 if (strchr (bar, 'o') != bar + 4)
56 abort ();
57 if (strchr (bar, '\0') != bar + 8)
58 abort ();
59 if (strrchr (bar, 'x'))
60 abort ();
61 if (strrchr (bar, 'o') != bar + 4)
62 abort ();
63 if (strcmp (foo + (x++ & 1), "ello world" + (--y & 1)))
64 abort ();
65 if (x != 6 || y != 0)
66 abort ();
67 dst[5] = ' ';
68 dst[6] = '\0';
69 x = 5;
70 y = 1;
71 if (strncpy (dst + 1, foo + (x++ & 3), 4) != dst + 1
72 || x != 6
73 || strcmp (dst + 1, "ello "))
74 abort ();
75 memset (dst, ' ', sizeof dst);
76 if (strncpy (dst + (++x & 1), (y++ & 3) + "foo", 10) != dst + 1
77 || x != 7
78 || y != 2
79 || memcmp (dst, " oo\0\0\0\0\0\0\0\0 ", 12))
80 abort ();
81 memset (dst, ' ', sizeof dst);
82 if (strncpy (dst, "hello", 8) != dst || memcmp (dst, "hello\0\0\0 ", 9))
83 abort ();
84 x = '!';
85 memset (buf, ' ', sizeof buf);
86 if (memset (buf, x++, ++y) != buf
87 || x != '!' + 1
88 || y != 3
89 || memcmp (buf, "!!!", 3))
90 abort ();
91 if (memset (buf + y++, '-', 8) != buf + 3
92 || y != 4
93 || memcmp (buf, "!!!--------", 11))
94 abort ();
95 x = 10;
96 if (memset (buf + ++x, 0, y++) != buf + 11
97 || x != 11
98 || y != 5
99 || memcmp (buf + 8, "---\0\0\0", 7))
100 abort ();
101 if (memset (buf + (x += 4), 0, 6) != buf + 15
102 || x != 15
103 || memcmp (buf + 10, "-\0\0\0\0\0\0\0\0\0", 11))
104 abort ();
105
106 return 0;
107 }
108