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bcdaad21 | 1 | /* Test that malloc tcache catches double free. |
04277e02 | 2 | Copyright (C) 2018-2019 Free Software Foundation, Inc. |
bcdaad21 DD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <errno.h> | |
20 | #include <error.h> | |
21 | #include <limits.h> | |
22 | #include <malloc.h> | |
23 | #include <stdlib.h> | |
24 | #include <stdio.h> | |
25 | #include <sys/signal.h> | |
26 | ||
27 | static int | |
28 | do_test (void) | |
29 | { | |
30 | char * volatile ptrs[20]; | |
31 | int i; | |
32 | ||
33 | /* Allocate enough small chunks so that when we free them all, the tcache | |
34 | is full, and the first one we freed is at the end of its linked list. */ | |
35 | #define COUNT 20 | |
36 | for (i=0; i<COUNT; i++) | |
37 | ptrs[i] = malloc (20); | |
38 | for (i=0; i<COUNT; i++) | |
39 | free (ptrs[i]); | |
40 | free (ptrs[0]); | |
41 | ||
42 | printf("FAIL: tcache double free\n"); | |
43 | return 1; | |
44 | } | |
45 | ||
46 | #define TEST_FUNCTION do_test | |
47 | #define EXPECTED_SIGNAL SIGABRT | |
48 | #include <support/test-driver.c> |