diff options
Diffstat (limited to 'openbsd-compat/regress/snprintftest.c')
-rw-r--r-- | openbsd-compat/regress/snprintftest.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/openbsd-compat/regress/snprintftest.c b/openbsd-compat/regress/snprintftest.c new file mode 100644 index 000000000..4ca63e180 --- /dev/null +++ b/openbsd-compat/regress/snprintftest.c | |||
@@ -0,0 +1,73 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2005 Darren Tucker | ||
3 | * Copyright (c) 2005 Damien Miller | ||
4 | * | ||
5 | * Permission to use, copy, modify, and distribute this software for any | ||
6 | * purpose with or without fee is hereby granted, provided that the above | ||
7 | * copyright notice and this permission notice appear in all copies. | ||
8 | * | ||
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | ||
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | ||
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | ||
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | ||
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | ||
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
16 | */ | ||
17 | |||
18 | #define BUFSZ 2048 | ||
19 | |||
20 | #include <sys/types.h> | ||
21 | #include <stdlib.h> | ||
22 | #include <stdio.h> | ||
23 | #include <stdarg.h> | ||
24 | #include <string.h> | ||
25 | |||
26 | static int failed = 0; | ||
27 | |||
28 | static void | ||
29 | fail(const char *m) | ||
30 | { | ||
31 | fprintf(stderr, "snprintftest: %s\n", m); | ||
32 | failed = 1; | ||
33 | } | ||
34 | |||
35 | int x_snprintf(char *str, size_t count, const char *fmt, ...) | ||
36 | { | ||
37 | size_t ret; | ||
38 | va_list ap; | ||
39 | |||
40 | va_start(ap, fmt); | ||
41 | ret = vsnprintf(str, count, fmt, ap); | ||
42 | va_end(ap); | ||
43 | return ret; | ||
44 | } | ||
45 | |||
46 | int | ||
47 | main(void) | ||
48 | { | ||
49 | char b[5]; | ||
50 | char *src; | ||
51 | |||
52 | snprintf(b,5,"123456789"); | ||
53 | if (b[4] != '\0') | ||
54 | fail("snprintf does not correctly terminate long strings"); | ||
55 | |||
56 | /* check for read overrun on unterminated string */ | ||
57 | if ((src = malloc(BUFSZ)) == NULL) { | ||
58 | fail("malloc failed"); | ||
59 | } else { | ||
60 | memset(src, 'a', BUFSZ); | ||
61 | snprintf(b, sizeof(b), "%.*s", 1, src); | ||
62 | if (strcmp(b, "a") != 0) | ||
63 | fail("failed with length limit '%%.s'"); | ||
64 | } | ||
65 | |||
66 | /* check that snprintf and vsnprintf return sane values */ | ||
67 | if (snprintf(b, 1, "%s %d", "hello", 12345) != 11) | ||
68 | fail("snprintf does not return required length"); | ||
69 | if (x_snprintf(b, 1, "%s %d", "hello", 12345) != 11) | ||
70 | fail("vsnprintf does not return required length"); | ||
71 | |||
72 | return failed; | ||
73 | } | ||