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| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2021-04-19 17:48:11 -0400 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-04-19 15:08:04 -0700 |
| commit | 81f6dd2135ea761832965bc7518e2ddf949480af (patch) | |
| tree | 879feee7aef25bf4a8d160766ff98186c583cebd /string | |
| parent | f53790272ce7bdc5ecd14b45f65d0464d2a61a3a (diff) | |
| download | glibc-81f6dd2135ea761832965bc7518e2ddf949480af.tar.gz glibc-81f6dd2135ea761832965bc7518e2ddf949480af.tar.xz glibc-81f6dd2135ea761832965bc7518e2ddf949480af.zip | |
x86: Expand test-memset.c and bench-memset.c
No bug. This commit adds tests cases and benchmarks for page cross and for memset to the end of the page without crossing. As well in test-memset.c this commit adds sentinel on start/end of tstbuf to test for overwrites Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
Diffstat (limited to 'string')
| -rw-r--r-- | string/test-memset.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/string/test-memset.c b/string/test-memset.c index eb71517390..82bfcd6ad4 100644 --- a/string/test-memset.c +++ b/string/test-memset.c @@ -109,16 +109,24 @@ SIMPLE_MEMSET (CHAR *s, int c, size_t n) static void do_one_test (impl_t *impl, CHAR *s, int c __attribute ((unused)), size_t n) { - CHAR tstbuf[n]; + CHAR buf[n + 2]; + CHAR *tstbuf = buf + 1; + CHAR sentinel = c - 1; + buf[0] = sentinel; + buf[n + 1] = sentinel; #ifdef TEST_BZERO simple_bzero (tstbuf, n); CALL (impl, s, n); - if (memcmp (s, tstbuf, n) != 0) + if (memcmp (s, tstbuf, n) != 0 + || buf[0] != sentinel + || buf[n + 1] != sentinel) #else CHAR *res = CALL (impl, s, c, n); if (res != s || SIMPLE_MEMSET (tstbuf, c, n) != tstbuf - || MEMCMP (s, tstbuf, n) != 0) + || MEMCMP (s, tstbuf, n) != 0 + || buf[0] != sentinel + || buf[n + 1] != sentinel) #endif /* !TEST_BZERO */ { error (0, 0, "Wrong result in function %s", impl->name); @@ -130,7 +138,7 @@ do_one_test (impl_t *impl, CHAR *s, int c __attribute ((unused)), size_t n) static void do_test (size_t align, int c, size_t len) { - align &= 7; + align &= 4095; if ((align + len) * sizeof (CHAR) > page_size) return; @@ -245,9 +253,11 @@ test_main (void) { for (i = 0; i < 18; ++i) do_test (0, c, 1 << i); - for (i = 1; i < 32; ++i) + for (i = 1; i < 64; ++i) { do_test (i, c, i); + do_test (4096 - i, c, i); + do_test (4095, c, i); if (i & (i - 1)) do_test (0, c, i); } |