-static int
-test_clib_strncat (vlib_main_t * vm, unformat_input_t * input)
-{
- char src[100], dst[100], old_dst[100];
- size_t s1size = sizeof (dst); // including null
- errno_t err;
- char s1[] = "Two things are infinite: ";
- char s2[] = "the universe and human stupidity; ";
- int indicator;
-
- vlib_cli_output (vm, "Test clib_strncat...");
-
- /* n == strlen src */
- strcpy_s (dst, sizeof (dst), s1);
- strcpy_s (src, sizeof (src), s2);
- err = clib_strncat (dst, src, clib_strnlen (src, sizeof (src)));
- if (err != EOK)
- return -1;
- if (strcmp_s (dst, s1size - 1,
- "Two things are infinite: the universe and human stupidity; ",
- &indicator) != EOK)
- return -1;
- if (indicator != 0)
- return -1;
- /* verify it against strncat */
- strcpy_s (dst, sizeof (dst), s1);
- strncat (dst, src, clib_strnlen (src, sizeof (src)));
- if (strcmp_s (dst, s1size - 1,
- "Two things are infinite: the universe and human stupidity; ",
- &indicator) != EOK)
- return -1;
- if (indicator != 0)
- return -1;
-
- /* n > strlen src */
- strcpy_s (dst, sizeof (dst), s1);
- err = clib_strncat (dst, src, clib_strnlen (src, sizeof (src)) + 10);
- if (err != EOK)
- return -1;
- if (strcmp_s (dst, s1size - 1,
- "Two things are infinite: the universe and human stupidity; ",
- &indicator) != EOK)
- return -1;
- if (indicator != 0)
- return -1;
- /* verify it against strncat */
- strcpy_s (dst, sizeof (dst), s1);
- strncat (dst, src, clib_strnlen (src, sizeof (src)));
- if (strcmp_s (dst, s1size - 1,
- "Two things are infinite: the universe and human stupidity; ",
- &indicator) != EOK)
- return -1;
- if (indicator != 0)
- return -1;
-
- /* zero length strncat */
- clib_strncpy (old_dst, dst, clib_strnlen (dst, sizeof (dst)));
- err = clib_strncat (dst, src, 0);
- if (err != EOK)
- return -1;
- /* verify dst is untouched */
- if (strcmp_s (dst, s1size - 1, old_dst, &indicator) != EOK)
- return -1;
- if (indicator != 0)
- return -1;
-
- /* empty string, wrong n concatenation */
- err = clib_strncat (dst, "", 10);
- if (err != EOK)
- return -1;
- /* verify dst is untouched */
- if (strcmp_s (dst, s1size - 1, old_dst, &indicator) != EOK)
- return -1;
- if (indicator != 0)
- return -1;
-
- /* limited concatenation, string > n, copy up to n */
- strcpy_s (dst, sizeof (dst), s1);
- err = clib_strncat (dst, s2, 13);
- if (err != EOK)
- return -1;
- if (strcmp_s (dst, s1size - 1, "Two things are infinite: the universe ",
- &indicator) != EOK)
- return -1;
- if (indicator != 0)
- return -1;
- /* verify it against strncat */
-#if __GNUC__ < 8
- /* GCC 8 debian flunks this one at compile time */
- strcpy_s (dst, sizeof (dst), s1);
- strncat (dst, s2, 13);
- if (strcmp_s (dst, s1size - 1, "Two things are infinite: the universe ",
- &indicator) != EOK)
- return -1;
- if (indicator != 0)
- return -1;
-#endif
-
- /* negative stuff */
- err = clib_strncat (0, 0, 1);
- if (err != EINVAL)
- return -1;
-
- /* overlap fail */
- err = clib_strncat (dst, dst + 1, s1size - 1);
- if (err != EINVAL)
- return -1;
-
- /* overlap fail */
-#if __GNUC__ < 8
- /* GCC 8 flunks this one at compile time... */
- err = clib_strncat (dst, dst, clib_strnlen (dst, sizeof (dst)));
- if (err != EINVAL)
- return -1;
-#endif
-
- /* OK, seems to work */
- return 0;
-}
-