diff options
| -rw-r--r-- | string/test-strcmp.c | 70 | ||||
| -rw-r--r-- | string/test-strncmp.c | 257 |
2 files changed, 306 insertions, 21 deletions
diff --git a/string/test-strcmp.c b/string/test-strcmp.c index 97d7bf5043..eacbdc8857 100644 --- a/string/test-strcmp.c +++ b/string/test-strcmp.c @@ -16,6 +16,9 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ +#define TEST_LEN (4096 * 3) +#define MIN_PAGE_SIZE (TEST_LEN + 2 * getpagesize ()) + #define TEST_MAIN #ifdef WIDE # define TEST_NAME "wcscmp" @@ -129,7 +132,7 @@ do_one_test (impl_t *impl, static void do_test (size_t align1, size_t align2, size_t len, int max_char, - int exp_result) + int exp_result) { size_t i; @@ -138,19 +141,22 @@ do_test (size_t align1, size_t align2, size_t len, int max_char, if (len == 0) return; - align1 &= 63; + align1 &= ~(CHARBYTES - 1); + align2 &= ~(CHARBYTES - 1); + + align1 &= getpagesize () - 1; if (align1 + (len + 1) * CHARBYTES >= page_size) return; - align2 &= 63; + align2 &= getpagesize () - 1; if (align2 + (len + 1) * CHARBYTES >= page_size) return; /* Put them close to the end of page. */ i = align1 + CHARBYTES * (len + 2); - s1 = (CHAR *) (buf1 + ((page_size - i) / 16 * 16) + align1); + s1 = (CHAR *)(buf1 + ((page_size - i) / 16 * 16) + align1); i = align2 + CHARBYTES * (len + 2); - s2 = (CHAR *) (buf2 + ((page_size - i) / 16 * 16) + align2); + s2 = (CHAR *)(buf2 + ((page_size - i) / 16 * 16) + align2); for (i = 0; i < len; i++) s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % max_char; @@ -161,9 +167,10 @@ do_test (size_t align1, size_t align2, size_t len, int max_char, s2[len - 1] -= exp_result; FOR_EACH_IMPL (impl, 0) - do_one_test (impl, s1, s2, exp_result); + do_one_test (impl, s1, s2, exp_result); } + static void do_random_tests (void) { @@ -385,7 +392,7 @@ check3 (void) int test_main (void) { - size_t i; + size_t i, j; test_init (); check(); @@ -426,6 +433,55 @@ test_main (void) do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, -1); } + for (j = 0; j < 160; ++j) + { + for (i = 0; i < TEST_LEN;) + { + do_test (getpagesize () - j - 1, 0, i, 127, 0); + do_test (getpagesize () - j - 1, 0, i, 127, 1); + do_test (getpagesize () - j - 1, 0, i, 127, -1); + + do_test (getpagesize () - j - 1, j, i, 127, 0); + do_test (getpagesize () - j - 1, j, i, 127, 1); + do_test (getpagesize () - j - 1, j, i, 127, -1); + + do_test (0, getpagesize () - j - 1, i, 127, 0); + do_test (0, getpagesize () - j - 1, i, 127, 1); + do_test (0, getpagesize () - j - 1, i, 127, -1); + + do_test (j, getpagesize () - j - 1, i, 127, 0); + do_test (j, getpagesize () - j - 1, i, 127, 1); + do_test (j, getpagesize () - j - 1, i, 127, -1); + + if (i < 32) + { + i += 1; + } + else if (i < 161) + { + i += 7; + } + else if (i + 161 < TEST_LEN) + { + i += 31; + i *= 17; + i /= 16; + if (i + 161 > TEST_LEN) + { + i = TEST_LEN - 160; + } + } + else if (i + 32 < TEST_LEN) + { + i += 7; + } + else + { + i += 1; + } + } + } + do_random_tests (); return ret; } diff --git a/string/test-strncmp.c b/string/test-strncmp.c index 61a283a0af..1a3cee1792 100644 --- a/string/test-strncmp.c +++ b/string/test-strncmp.c @@ -16,6 +16,9 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ +#define TEST_LEN (4096 * 3) +#define MIN_PAGE_SIZE (TEST_LEN + 2 * getpagesize ()) + #define TEST_MAIN #ifdef WIDE # define TEST_NAME "wcsncmp" @@ -166,11 +169,11 @@ do_test_limit (size_t align1, size_t align2, size_t len, size_t n, int max_char, } static void -do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char, - int exp_result) +do_test_n (size_t align1, size_t align2, size_t len, size_t n, int n_in_bounds, + int max_char, int exp_result) { - size_t i; - CHAR *s1, *s2; + size_t i, buf_bound; + CHAR *s1, *s2, *s1_end, *s2_end; align1 &= ~(CHARBYTES - 1); align2 &= ~(CHARBYTES - 1); @@ -178,22 +181,28 @@ do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char, if (n == 0) return; - align1 &= 63; - if (align1 + (n + 1) * CHARBYTES >= page_size) + buf_bound = n_in_bounds ? n : len; + + align1 &= getpagesize () - 1; + if (align1 + (buf_bound + 2) * CHARBYTES >= page_size) return; - align2 &= 63; - if (align2 + (n + 1) * CHARBYTES >= page_size) + align2 &= getpagesize () - 1; + if (align2 + (buf_bound + 2) * CHARBYTES >= page_size) return; - s1 = (CHAR *) (buf1 + align1); - s2 = (CHAR *) (buf2 + align2); + s1 = (CHAR *)(buf1 + align1); + s2 = (CHAR *)(buf2 + align2); - for (i = 0; i < n; i++) + if (n_in_bounds) + { + s1[n] = 24 + exp_result; + s2[n] = 23; + } + + for (i = 0; i < buf_bound; i++) s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % max_char; - s1[n] = 24 + exp_result; - s2[n] = 23; s1[len] = 0; s2[len] = 0; if (exp_result < 0) @@ -203,11 +212,25 @@ do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char, if (len >= n) s2[n - 1] -= exp_result; + /* Ensure that both s1 and s2 are valid null terminated strings. This is + * required by the standard. */ + s1_end = (CHAR *)(buf1 + MIN_PAGE_SIZE - CHARBYTES); + s2_end = (CHAR *)(buf2 + MIN_PAGE_SIZE - CHARBYTES); + *s1_end = 0; + *s2_end = 0; + FOR_EACH_IMPL (impl, 0) do_one_test (impl, s1, s2, n, exp_result); } static void +do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char, + int exp_result) +{ + do_test_n (align1, align2, len, n, 1, max_char, exp_result); +} + +static void do_page_test (size_t offset1, size_t offset2, CHAR *s2) { CHAR *s1; @@ -400,10 +423,123 @@ check3 (void) } } +static void +check_overflow (void) +{ + size_t i, j, of_mask, of_idx; + const size_t of_masks[] + = { ULONG_MAX, LONG_MIN, ULONG_MAX - (ULONG_MAX >> 2), + ((size_t)LONG_MAX) >> 1 }; + + for (of_idx = 0; of_idx < sizeof (of_masks) / sizeof (of_masks[0]); ++of_idx) + { + of_mask = of_masks[of_idx]; + for (j = 0; j < 160; ++j) + { + for (i = 1; i <= 161; i += (32 / sizeof (CHAR))) + { + do_test_n (j, 0, i, of_mask, 0, 127, 0); + do_test_n (j, 0, i, of_mask, 0, 127, 1); + do_test_n (j, 0, i, of_mask, 0, 127, -1); + + do_test_n (j, 0, i, of_mask - j / 2, 0, 127, 0); + do_test_n (j, 0, i, of_mask - j * 2, 0, 127, 1); + do_test_n (j, 0, i, of_mask - j, 0, 127, -1); + + do_test_n (j / 2, j, i, of_mask, 0, 127, 0); + do_test_n (j / 2, j, i, of_mask, 0, 127, 1); + do_test_n (j / 2, j, i, of_mask, 0, 127, -1); + + do_test_n (j / 2, j, i, of_mask - j, 0, 127, 0); + do_test_n (j / 2, j, i, of_mask - j / 2, 0, 127, 1); + do_test_n (j / 2, j, i, of_mask - j * 2, 0, 127, -1); + + do_test_n (0, j, i, of_mask - j * 2, 0, 127, 0); + do_test_n (0, j, i, of_mask - j, 0, 127, 1); + do_test_n (0, j, i, of_mask - j / 2, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, 0, i, of_mask, 0, 127, 0); + do_test_n (getpagesize () - j - 1, 0, i, of_mask, 0, 127, 1); + do_test_n (getpagesize () - j - 1, 0, i, of_mask, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, 0, i, of_mask - j / 2, 0, 127, + 0); + do_test_n (getpagesize () - j - 1, 0, i, of_mask - j * 2, 0, 127, + 1); + do_test_n (getpagesize () - j - 1, 0, i, of_mask - j, 0, 127, + -1); + + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, i, + of_mask, 0, 127, 0); + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, i, + of_mask, 0, 127, 1); + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, i, + of_mask, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, i, + of_mask - j, 0, 127, 0); + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, i, + of_mask - j / 2, 0, 127, 1); + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, i, + of_mask - j * 2, 0, 127, -1); + } + + for (i = 1; i < TEST_LEN; i += i) + { + do_test_n (j, 0, i - 1, of_mask, 0, 127, 0); + do_test_n (j, 0, i - 1, of_mask, 0, 127, 1); + do_test_n (j, 0, i - 1, of_mask, 0, 127, -1); + + do_test_n (j, 0, i - 1, of_mask - j / 2, 0, 127, 0); + do_test_n (j, 0, i - 1, of_mask - j * 2, 0, 127, 1); + do_test_n (j, 0, i - 1, of_mask - j, 0, 127, -1); + + do_test_n (j / 2, j, i - 1, of_mask, 0, 127, 0); + do_test_n (j / 2, j, i - 1, of_mask, 0, 127, 1); + do_test_n (j / 2, j, i - 1, of_mask, 0, 127, -1); + + do_test_n (j / 2, j, i - 1, of_mask - j, 0, 127, 0); + do_test_n (j / 2, j, i - 1, of_mask - j / 2, 0, 127, 1); + do_test_n (j / 2, j, i - 1, of_mask - j * 2, 0, 127, -1); + + do_test_n (0, j, i - 1, of_mask - j * 2, 0, 127, 0); + do_test_n (0, j, i - 1, of_mask - j, 0, 127, 1); + do_test_n (0, j, i - 1, of_mask - j / 2, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, 0, i - 1, of_mask, 0, 127, 0); + do_test_n (getpagesize () - j - 1, 0, i - 1, of_mask, 0, 127, 1); + do_test_n (getpagesize () - j - 1, 0, i - 1, of_mask, 0, 127, + -1); + + do_test_n (getpagesize () - j - 1, 0, i - 1, of_mask - j / 2, 0, + 127, 0); + do_test_n (getpagesize () - j - 1, 0, i - 1, of_mask - j * 2, 0, + 127, 1); + do_test_n (getpagesize () - j - 1, 0, i - 1, of_mask - j, 0, 127, + -1); + + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, + i - 1, of_mask, 0, 127, 0); + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, + i - 1, of_mask, 0, 127, 1); + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, + i - 1, of_mask, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, + i - 1, of_mask - j, 0, 127, 0); + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, + i - 1, of_mask - j / 2, 0, 127, 1); + do_test_n (getpagesize () - j - 1, getpagesize () - 2 * j - 1, + i - 1, of_mask - j * 2, 0, 127, -1); + } + } + } +} + int test_main (void) { - size_t i; + size_t i, j; test_init (); @@ -470,6 +606,99 @@ test_main (void) do_test_limit (0, 0, 15 - i, 16 - i, 255, -1); } + for (j = 0; j < 160; ++j) + { + for (i = 0; i < TEST_LEN;) + { + do_test_n (getpagesize () - j - 1, 0, i, i + 1, 0, 127, 0); + do_test_n (getpagesize () - j - 1, 0, i, i + 1, 0, 127, 1); + do_test_n (getpagesize () - j - 1, 0, i, i + 1, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, 0, i, i, 0, 127, 0); + do_test_n (getpagesize () - j - 1, 0, i, i - 1, 0, 127, 0); + + do_test_n (getpagesize () - j - 1, 0, i, ULONG_MAX, 0, 127, 0); + do_test_n (getpagesize () - j - 1, 0, i, ULONG_MAX, 0, 127, 1); + do_test_n (getpagesize () - j - 1, 0, i, ULONG_MAX, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, 0, i, ULONG_MAX - i, 0, 127, 0); + do_test_n (getpagesize () - j - 1, 0, i, ULONG_MAX - i, 0, 127, 1); + do_test_n (getpagesize () - j - 1, 0, i, ULONG_MAX - i, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, j, i, i + 1, 0, 127, 0); + do_test_n (getpagesize () - j - 1, j, i, i + 1, 0, 127, 1); + do_test_n (getpagesize () - j - 1, j, i, i + 1, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, j, i, i, 0, 127, 0); + do_test_n (getpagesize () - j - 1, j, i, i - 1, 0, 127, 0); + + do_test_n (getpagesize () - j - 1, j, i, ULONG_MAX, 0, 127, 0); + do_test_n (getpagesize () - j - 1, j, i, ULONG_MAX, 0, 127, 1); + do_test_n (getpagesize () - j - 1, j, i, ULONG_MAX, 0, 127, -1); + + do_test_n (getpagesize () - j - 1, j, i, ULONG_MAX - i, 0, 127, 0); + do_test_n (getpagesize () - j - 1, j, i, ULONG_MAX - i, 0, 127, 1); + do_test_n (getpagesize () - j - 1, j, i, ULONG_MAX - i, 0, 127, -1); + + do_test_n (0, getpagesize () - j - 1, i, i + 1, 0, 127, 0); + do_test_n (0, getpagesize () - j - 1, i, i + 1, 0, 127, 1); + do_test_n (0, getpagesize () - j - 1, i, i + 1, 0, 127, -1); + + do_test_n (0, getpagesize () - j - 1, i, i, 0, 127, 0); + do_test_n (0, getpagesize () - j - 1, i, i - 1, 0, 127, 0); + + do_test_n (0, getpagesize () - j - 1, i, ULONG_MAX, 0, 127, 0); + do_test_n (0, getpagesize () - j - 1, i, ULONG_MAX, 0, 127, 1); + do_test_n (0, getpagesize () - j - 1, i, ULONG_MAX, 0, 127, -1); + + do_test_n (0, getpagesize () - j - 1, i, ULONG_MAX - i, 0, 127, 0); + do_test_n (0, getpagesize () - j - 1, i, ULONG_MAX - i, 0, 127, 1); + do_test_n (0, getpagesize () - j - 1, i, ULONG_MAX - i, 0, 127, -1); + + do_test_n (j, getpagesize () - j - 1, i, i + 1, 0, 127, 0); + do_test_n (j, getpagesize () - j - 1, i, i + 1, 0, 127, 1); + do_test_n (j, getpagesize () - j - 1, i, i + 1, 0, 127, -1); + + do_test_n (j, getpagesize () - j - 1, i, i, 0, 127, 0); + do_test_n (j, getpagesize () - j - 1, i, i - 1, 0, 127, 0); + + do_test_n (j, getpagesize () - j - 1, i, ULONG_MAX, 0, 127, 0); + do_test_n (j, getpagesize () - j - 1, i, ULONG_MAX, 0, 127, 1); + do_test_n (j, getpagesize () - j - 1, i, ULONG_MAX, 0, 127, -1); + + do_test_n (j, getpagesize () - j - 1, i, ULONG_MAX - i, 0, 127, 0); + do_test_n (j, getpagesize () - j - 1, i, ULONG_MAX - i, 0, 127, 1); + do_test_n (j, getpagesize () - j - 1, i, ULONG_MAX - i, 0, 127, -1); + if (i < 32) + { + i += 1; + } + else if (i < 161) + { + i += 7; + } + else if (i + 161 < TEST_LEN) + { + i += 31; + i *= 17; + i /= 16; + if (i + 161 > TEST_LEN) + { + i = TEST_LEN - 160; + } + } + else if (i + 32 < TEST_LEN) + { + i += 7; + } + else + { + i += 1; + } + } + } + + check_overflow (); do_random_tests (); return ret; } |