diff options
Diffstat (limited to 'string/tester.c')
| -rw-r--r-- | string/tester.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/string/tester.c b/string/tester.c index f95270efb4..cccef3ad9d 100644 --- a/string/tester.c +++ b/string/tester.c @@ -344,6 +344,9 @@ test_strncat (void) (void) strncat (one, "gh", 2); equal (one, "abcdgh", 12); /* Count and length equal. */ + + (void) strncat (one, "ij", (size_t)-1); /* set sign bit in count */ + equal (one, "abcdghij", 13); } static void @@ -364,6 +367,8 @@ test_strncmp (void) check (strncmp ("abce", "abc", 3) == 0, 11); /* Count == length. */ check (strncmp ("abcd", "abce", 4) < 0, 12); /* Nudging limit. */ check (strncmp ("abc", "def", 0) == 0, 13); /* Zero count. */ + check (strncmp ("abc", "", (size_t)-1) > 0, 14); /* set sign bit in count */ + check (strncmp ("abc", "abc", (size_t)-2) == 0, 15); } static void @@ -430,6 +435,29 @@ test_strlen (void) } static void +test_strnlen (void) +{ + it = "strnlen"; + check (strnlen ("", 10) == 0, 1); /* Empty. */ + check (strnlen ("a", 10) == 1, 2); /* Single char. */ + check (strnlen ("abcd", 10) == 4, 3); /* Multiple chars. */ + check (strnlen ("foo", (size_t)-1) == 3, 4); /* limits of n. */ + + { + char buf[4096]; + int i; + char *p; + for (i=0; i < 0x100; i++) + { + p = (char *) ((unsigned long int)(buf + 0xff) & ~0xff) + i; + strcpy (p, "OK"); + strcpy (p+3, "BAD/WRONG"); + check (strnlen (p, 100) == 2, 5+i); + } + } +} + +static void test_strchr (void) { it = "strchr"; @@ -1382,6 +1410,9 @@ main (void) /* strlen. */ test_strlen (); + /* strnlen. */ + test_strnlen (); + /* strchr. */ test_strchr (); |