| 1 | /* Test qsort with invalid comparison functions. |
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| 2 | Copyright (C) 2023-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <http://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <array_length.h> |
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| 20 | #include <stdlib.h> |
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| 21 | #include <support/check.h> |
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| 22 | |
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| 23 | /* Invalid comparison function that always returns -1. */ |
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| 24 | static int |
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| 25 | invalid_compare_1 (const void *a1, const void *b1) |
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| 26 | { |
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| 27 | const int *a = a1; |
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| 28 | const int *b = b1; |
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| 29 | /* Check that the marker value matches, which means that we are |
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| 30 | likely within the array. */ |
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| 31 | TEST_COMPARE (*a, 842523635); |
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| 32 | TEST_COMPARE (*b, 842523635); |
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| 33 | TEST_VERIFY_EXIT (*a == 842523635); |
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| 34 | TEST_VERIFY_EXIT (*b == 842523635); |
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| 35 | return -1; |
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| 36 | } |
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| 37 | |
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| 38 | /* Invalid comparison function that always returns 1. */ |
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| 39 | static int |
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| 40 | invalid_compare_2 (const void *a1, const void *b1) |
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| 41 | { |
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| 42 | const int *a = a1; |
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| 43 | const int *b = b1; |
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| 44 | TEST_COMPARE (*a, 842523635); |
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| 45 | TEST_COMPARE (*b, 842523635); |
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| 46 | TEST_VERIFY_EXIT (*a == 842523635); |
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| 47 | TEST_VERIFY_EXIT (*b == 842523635); |
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| 48 | return 1; |
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| 49 | } |
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| 50 | |
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| 51 | static int |
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| 52 | do_test (void) |
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| 53 | { |
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| 54 | int array[] = {842523635, 842523635, 842523635, 842523635, 842523635}; |
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| 55 | qsort (array, array_length (array), sizeof (array[0]), invalid_compare_1); |
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| 56 | qsort (array, array_length (array), sizeof (array[0]), invalid_compare_2); |
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| 57 | return 0; |
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| 58 | } |
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| 59 | |
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| 60 | #include <support/test-driver.c> |
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| 61 | |
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