diff options
Diffstat (limited to 'string/test-strnlen.c')
| -rw-r--r-- | string/test-strnlen.c | 64 |
1 files changed, 41 insertions, 23 deletions
diff --git a/string/test-strnlen.c b/string/test-strnlen.c index 0d9479d154..81d7e3ec0a 100644 --- a/string/test-strnlen.c +++ b/string/test-strnlen.c @@ -75,7 +75,7 @@ do_test (size_t align, size_t len, size_t maxlen, int max_char) { size_t i; - align &= 63; + align &= (getpagesize () / sizeof (CHAR) - 1); if ((align + len) * sizeof (CHAR) >= page_size) return; @@ -92,32 +92,50 @@ do_test (size_t align, size_t len, size_t maxlen, int max_char) static void do_overflow_tests (void) { - size_t i, j, len; + size_t i, j, al_idx, repeats, len; const size_t one = 1; uintptr_t buf_addr = (uintptr_t) buf1; + const size_t alignments[] = { 0, 1, 7, 9, 31, 33, 63, 65, 95, 97, 127, 129 }; - for (i = 0; i < 750; ++i) + for (al_idx = 0; al_idx < sizeof (alignments) / sizeof (alignments[0]); + al_idx++) { - do_test (0, i, SIZE_MAX - i, BIG_CHAR); - do_test (0, i, i - buf_addr, BIG_CHAR); - do_test (0, i, -buf_addr - i, BIG_CHAR); - do_test (0, i, SIZE_MAX - buf_addr - i, BIG_CHAR); - do_test (0, i, SIZE_MAX - buf_addr + i, BIG_CHAR); - - len = 0; - for (j = 8 * sizeof(size_t) - 1; j ; --j) - { - len |= one << j; - do_test (0, i, len - i, BIG_CHAR); - do_test (0, i, len + i, BIG_CHAR); - do_test (0, i, len - buf_addr - i, BIG_CHAR); - do_test (0, i, len - buf_addr + i, BIG_CHAR); - - do_test (0, i, ~len - i, BIG_CHAR); - do_test (0, i, ~len + i, BIG_CHAR); - do_test (0, i, ~len - buf_addr - i, BIG_CHAR); - do_test (0, i, ~len - buf_addr + i, BIG_CHAR); - } + for (repeats = 0; repeats < 2; ++repeats) + { + size_t align = repeats ? (getpagesize () - alignments[al_idx]) + : alignments[al_idx]; + align /= sizeof (CHAR); + for (i = 0; i < 750; ++i) + { + do_test (align, i, SIZE_MAX, BIG_CHAR); + + do_test (align, i, SIZE_MAX - i, BIG_CHAR); + do_test (align, i, i - buf_addr, BIG_CHAR); + do_test (align, i, -buf_addr - i, BIG_CHAR); + do_test (align, i, SIZE_MAX - buf_addr - i, BIG_CHAR); + do_test (align, i, SIZE_MAX - buf_addr + i, BIG_CHAR); + + len = 0; + for (j = 8 * sizeof (size_t) - 1; j; --j) + { + len |= one << j; + do_test (align, i, len, BIG_CHAR); + do_test (align, i, len - i, BIG_CHAR); + do_test (align, i, len + i, BIG_CHAR); + do_test (align, i, len - buf_addr - i, BIG_CHAR); + do_test (align, i, len - buf_addr + i, BIG_CHAR); + + do_test (align, i, ~len - i, BIG_CHAR); + do_test (align, i, ~len + i, BIG_CHAR); + do_test (align, i, ~len - buf_addr - i, BIG_CHAR); + do_test (align, i, ~len - buf_addr + i, BIG_CHAR); + + do_test (align, i, -buf_addr, BIG_CHAR); + do_test (align, i, j - buf_addr, BIG_CHAR); + do_test (align, i, -buf_addr - j, BIG_CHAR); + } + } + } } } |