diff options
Diffstat (limited to 'string/test-strnlen.c')
| -rw-r--r-- | string/test-strnlen.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/string/test-strnlen.c b/string/test-strnlen.c index 9b4b01a1a7..a1a6746cc9 100644 --- a/string/test-strnlen.c +++ b/string/test-strnlen.c @@ -90,6 +90,38 @@ 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; + const size_t one = 1; + uintptr_t buf_addr = (uintptr_t) buf1; + + for (i = 0; i < 750; ++i) + { + 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); + } + } +} + +static void do_random_tests (void) { size_t i, j, n, align, len; @@ -274,6 +306,7 @@ test_main (void) do_random_tests (); do_page_tests (); do_page_2_tests (); + do_overflow_tests (); return ret; } |