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/* Test qsort with invalid comparison functions.
Copyright (C) 2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <array_length.h>
#include <stdlib.h>
#include <support/check.h>
/* Invalid comparison function that always returns -1. */
static int
invalid_compare_1 (const void *a1, const void *b1)
{
const int *a = a1;
const int *b = b1;
/* Check that the marker value matches, which means that we are
likely within the array. */
TEST_COMPARE (*a, 842523635);
TEST_COMPARE (*b, 842523635);
TEST_VERIFY_EXIT (*a == 842523635);
TEST_VERIFY_EXIT (*b == 842523635);
return -1;
}
/* Invalid comparison function that always returns 1. */
static int
invalid_compare_2 (const void *a1, const void *b1)
{
const int *a = a1;
const int *b = b1;
TEST_COMPARE (*a, 842523635);
TEST_COMPARE (*b, 842523635);
TEST_VERIFY_EXIT (*a == 842523635);
TEST_VERIFY_EXIT (*b == 842523635);
return 1;
}
static int
do_test (void)
{
int array[] = {842523635, 842523635, 842523635, 842523635, 842523635};
qsort (array, array_length (array), sizeof (array[0]), invalid_compare_1);
qsort (array, array_length (array), sizeof (array[0]), invalid_compare_2);
return 0;
}
#include <support/test-driver.c>
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