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Further harden glibc malloc metadata against 1-byte overflows.
[thirdparty/glibc.git] / nptl / tst-cleanup3.c
1 /* Copyright (C) 2003-2017 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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 <pthread.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <unistd.h>
23
24
25 static int do_test (void);
26
27 #define TEST_FUNCTION do_test ()
28 #include "../test-skeleton.c"
29
30 static int global;
31
32
33 static void
34 ch (void *arg)
35 {
36 int val = (long int) arg;
37
38 printf ("ch (%d)\n", val);
39
40 global *= val;
41 global += val;
42 }
43
44
45 static void *
46 tf (void *a)
47 {
48 pthread_cleanup_push (ch, (void *) 1l);
49
50 pthread_cleanup_push (ch, (void *) 2l);
51
52 pthread_cleanup_push (ch, (void *) 3l);
53
54 pthread_exit ((void *) 1l);
55
56 pthread_cleanup_pop (1);
57
58 pthread_cleanup_pop (1);
59
60 pthread_cleanup_pop (1);
61
62 return NULL;
63 }
64
65
66 int
67 do_test (void)
68 {
69 pthread_t th;
70
71 if (pthread_create (&th, NULL, tf, NULL) != 0)
72 {
73 write_message ("create failed\n");
74 _exit (1);
75 }
76
77 void *r;
78 int e;
79 if ((e = pthread_join (th, &r)) != 0)
80 {
81 printf ("join failed: %d\n", e);
82 _exit (1);
83 }
84
85 if (r != (void *) 1l)
86 {
87 puts ("thread not canceled");
88 exit (1);
89 }
90
91 if (global != 9)
92 {
93 printf ("global = %d, expected 9\n", global);
94 exit (1);
95 }
96
97 return 0;
98 }