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61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/* Test qsort with invalid comparison functions.
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Copyright (C) 2023-2025 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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<http://www.gnu.org/licenses/>. */
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#include <array_length.h>
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#include <stdlib.h>
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#include <support/check.h>
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/* Invalid comparison function that always returns -1. */
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static int
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invalid_compare_1 (const void *a1, const void *b1)
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{
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const int *a = a1;
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const int *b = b1;
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/* Check that the marker value matches, which means that we are
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likely within the array. */
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TEST_COMPARE (*a, 842523635);
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TEST_COMPARE (*b, 842523635);
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TEST_VERIFY_EXIT (*a == 842523635);
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TEST_VERIFY_EXIT (*b == 842523635);
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return -1;
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}
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/* Invalid comparison function that always returns 1. */
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static int
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invalid_compare_2 (const void *a1, const void *b1)
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{
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const int *a = a1;
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const int *b = b1;
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TEST_COMPARE (*a, 842523635);
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TEST_COMPARE (*b, 842523635);
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TEST_VERIFY_EXIT (*a == 842523635);
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TEST_VERIFY_EXIT (*b == 842523635);
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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 array[] = {842523635, 842523635, 842523635, 842523635, 842523635};
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qsort (array, array_length (array), sizeof (array[0]), invalid_compare_1);
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qsort (array, array_length (array), sizeof (array[0]), invalid_compare_2);
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return 0;
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}
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#include <support/test-driver.c>
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