lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-07-29 11:41:21 +03:00
Code Activity

Add a test for BZ #15674

Browse Source
This commit is contained in:
H.J. Lu
2013-06-26 15:23:08 -07:00
parent fc74328c1f
commit bb5bb87cd2
2 changed files with 27 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
string/test-memcmp.c
View File

@ -448,6 +448,29 @@ check1 (void)
}
}
/* This test checks that memcmp doesn't overrun buffers. */
static void
check2 (void)
{
size_t max_length = page_size / sizeof (CHAR);
/* Initialize buf2 to the same values as buf1. The bug requires the
last compared byte to be different. */
memcpy (buf2, buf1, page_size);
((char *) buf2)[page_size - 1] ^= 0x11;
for (size_t length = 1; length < max_length; length++)
{
CHAR *s1 = (CHAR *) buf1 + max_length - length;
CHAR *s2 = (CHAR *) buf2 + max_length - length;
const int exp_result = SIMPLE_MEMCMP (s1, s2, length);
FOR_EACH_IMPL (impl, 0)
check_result (impl, s1, s2, length, exp_result);
}
}
int
test_main (void)
{
@ -456,6 +479,7 @@ test_main (void)
test_init ();
check1 ();
check2 ();
printf ("%23s", "");
FOR_EACH_IMPL (impl, 0)