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e123f08ad5
Overflow case for __wcsncmp_avx2_rtm should be __wcscmp_avx2_rtm not __wcscmp_avx2. commitddf0992cf5Author: 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] Set the wrong fallback function for `__wcsncmp_avx2_rtm`. It was set to fallback on to `__wcscmp_avx2` instead of `__wcscmp_avx2_rtm` which can cause spurious aborts. This change will need to be backported. All string/memory tests pass. Reviewed-by: H.J. Lu <hjl.tools@gmail.com> (cherry picked from commit9fef7039a7)
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/* Test case for strncmp inside a transactionally executing RTM region.
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Copyright (C) 2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdint.h>
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#include <tst-string-rtm.h>
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#ifdef WIDE
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# define CHAR wchar_t
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# define MEMSET wmemset
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# define STRNCMP wcsncmp
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# define TEST_NAME "wcsncmp"
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#else /* !WIDE */
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# define CHAR char
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# define MEMSET memset
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# define STRNCMP strncmp
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# define TEST_NAME "strncmp"
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#endif /* !WIDE */
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#define LOOP 3000
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#define STRING_SIZE 1024
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CHAR string1[STRING_SIZE];
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CHAR string2[STRING_SIZE];
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__attribute__ ((noinline, noclone))
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static int
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prepare (void)
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{
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MEMSET (string1, 'a', STRING_SIZE - 1);
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MEMSET (string2, 'a', STRING_SIZE - 1);
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if (STRNCMP (string1, string2, STRING_SIZE) == 0)
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return EXIT_SUCCESS;
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else
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return EXIT_FAILURE;
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}
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__attribute__ ((noinline, noclone))
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static int
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function (void)
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{
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if (STRNCMP (string1, string2, STRING_SIZE) == 0)
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return 0;
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else
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return 1;
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}
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__attribute__ ((noinline, noclone))
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static int
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function_overflow (void)
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{
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if (STRNCMP (string1, string2, SIZE_MAX) == 0)
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return 0;
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else
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return 1;
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}
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__attribute__ ((noinline, noclone))
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static int
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function_overflow2 (void)
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{
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if (STRNCMP (string1, string2, SIZE_MAX >> 4) == 0)
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return 0;
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else
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return 1;
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}
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static int
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do_test (void)
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{
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int status = do_test_1 (TEST_NAME, LOOP, prepare, function);
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if (status != EXIT_SUCCESS)
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return status;
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status = do_test_1 (TEST_NAME, LOOP, prepare, function_overflow);
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if (status != EXIT_SUCCESS)
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return status;
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status = do_test_1 (TEST_NAME, LOOP, prepare, function_overflow2);
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if (status != EXIT_SUCCESS)
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return status;
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return status;
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}
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