From: Noah Goldstein <goldstein.w.n@gmail.com>
To: Matheus Castanho <msc@linux.ibm.com>
Cc: GNU C Library <libc-alpha@sourceware.org>
Subject: Re: [PATCH v4 2/5] string: Improve coverage in test-strcmp.c and test-strncmp.c
Date: Mon, 7 Feb 2022 13:03:13 -0600 [thread overview]
Message-ID: <CAFUsyfLz+9eTii6pkA0+p2FcO-qarujZG8VP+ayTKiroEEWWUA@mail.gmail.com> (raw)
In-Reply-To: <87o83idb2a.fsf@linux.ibm.com>
On Mon, Feb 7, 2022 at 8:08 AM Matheus Castanho <msc@linux.ibm.com> wrote:
>
>
> Hi Noah,
>
> Noah Goldstein via Libc-alpha <libc-alpha@sourceware.org> writes:
>
> > Add additional test cases for small / medium sizes.
> >
> > Add tests in test-strncmp.c where `n` is near ULONG_MAX or LONG_MIN to
> > test for overflow bugs in length handling.
> >
> > Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
> > ---
> > string/test-strcmp.c | 70 ++++++++++--
> > 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 ())
>
> Is this change really necessary? It broke the tests on ppc64le because
> the default page size is 64kB, which this new value is not a multiple
> of, causing mprotect to fail with EINVAL in test_init.
We can make MIN_PAGE_SIZE (8 * getpagesize ())?
>
> --
> Matheus Castanho
next prev parent reply other threads:[~2022-02-07 19:03 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-03 21:42 [PATCH v4 1/5] string/test-str*cmp: remove stupid_[strcmp, strncmp, wcscmp, wcsncmp] Noah Goldstein
2022-02-03 21:42 ` [PATCH v4 2/5] string: Improve coverage in test-strcmp.c and test-strncmp.c Noah Goldstein
2022-02-03 22:28 ` H.J. Lu
2022-02-07 13:59 ` Matheus Castanho
2022-02-07 19:03 ` Noah Goldstein [this message]
2022-02-07 20:17 ` Noah Goldstein
2022-02-03 21:42 ` [PATCH v4 3/5] x86: Optimize strcmp-avx2.S Noah Goldstein
2022-02-03 22:29 ` H.J. Lu
2022-02-04 18:57 ` Joseph Myers
2022-02-04 19:13 ` H.J. Lu
2022-05-04 5:40 ` Sunil Pandey
2022-02-03 21:42 ` [PATCH v4 4/5] x86: Optimize strcmp-evex.S Noah Goldstein
2022-02-03 22:30 ` H.J. Lu
2022-05-04 5:38 ` Sunil Pandey
2022-02-03 21:42 ` [PATCH v4 5/5] benchtests: Add more coverage for strcmp and strncmp benchmarks Noah Goldstein
2022-02-03 22:30 ` H.J. Lu
2022-02-03 22:28 ` [PATCH v4 1/5] string/test-str*cmp: remove stupid_[strcmp, strncmp, wcscmp, wcsncmp] H.J. Lu
2022-02-03 23:30 ` Noah Goldstein
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