1 #define _GNU_SOURCE
2 #include <stdio.h>
3 #include <pthread.h>
4 #include <string.h>
5 #include <stdlib.h>
6 #include <sys/prctl.h>
7 #include <sys/types.h>
8 #include <unistd.h>
9 #include <assert.h>
10
11 static pthread_t children[3];
12
bad_things(int offset)13 void bad_things(int offset)
14 {
15 char* m = malloc(sizeof(char)*offset);
16 m[offset] = 0;
17 free(m);
18 }
19
child_fn_2(void * arg)20 void* child_fn_2 ( void* arg )
21 {
22 const char* threadname = "012345678901234";
23
24 pthread_setname_np(pthread_self(), threadname);
25
26 bad_things(4);
27
28 return NULL;
29 }
30
child_fn_1(void * arg)31 void* child_fn_1 ( void* arg )
32 {
33 const char* threadname = "try1";
34 int r;
35
36 pthread_setname_np(pthread_self(), threadname);
37
38 bad_things(3);
39
40 r = pthread_create(&children[2], NULL, child_fn_2, NULL);
41 assert(!r);
42
43 r = pthread_join(children[2], NULL);
44 assert(!r);
45
46 return NULL;
47 }
48
child_fn_0(void * arg)49 void* child_fn_0 ( void* arg )
50 {
51 int r;
52
53 bad_things(2);
54
55 r = pthread_create(&children[1], NULL, child_fn_1, NULL);
56 assert(!r);
57
58 r = pthread_join(children[1], NULL);
59 assert(!r);
60
61 return NULL;
62 }
63
main(int argc,const char ** argv)64 int main(int argc, const char** argv)
65 {
66 int r;
67
68 bad_things(1);
69
70 r = pthread_create(&children[0], NULL, child_fn_0, NULL);
71 assert(!r);
72
73 r = pthread_join(children[0], NULL);
74 assert(!r);
75
76 bad_things(5);
77
78 return 0;
79 }
80
81