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string: Add a testcase for wcsncmp with SIZE_MAX [BZ #28755]

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Verify that wcsncmp (L("abc"), L("abd"), SIZE_MAX) == 0.  The new test
fails without

commit ddf0992cf5
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date:   Sun Jan 9 16:02:21 2022 -0600

    x86: Fix __wcsncmp_avx2 in strcmp-avx2.S [BZ# 28755]

and

commit 7e08db3359
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date:   Sun Jan 9 16:02:28 2022 -0600

    x86: Fix __wcsncmp_evex in strcmp-evex.S [BZ# 28755]

This is for BZ #28755.

Reviewed-by: Sunil K Pandey <skpgkp2@gmail.com>
This commit is contained in:
H.J. Lu 2022-02-17 08:10:35 -08:00
parent bbe199b27a
commit aa5a720056
1 changed files with 13 additions and 0 deletions
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13
string/test-strncmp.c
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@ -445,6 +445,18 @@ check4 (void)
check_result (impl, s1, s2, size, exp_result);
}
static void
check5 (void)
{
const CHAR *s1 = L ("abc");
CHAR *s2 = STRDUP (s1);
FOR_EACH_IMPL (impl, 0)
check_result (impl, s1, s2, SIZE_MAX, 0);
free (s2);
}
static void
check_overflow (void)
{
@ -569,6 +581,7 @@ test_main (void)
check2 ();
check3 ();
check4 ();
check5 ();
printf ("%23s", "");
FOR_EACH_IMPL (impl, 0)