1// RUN: %clang_safestack %s -pthread -o %t
2// RUN: %run %t
3
4// XFAIL: darwin
5
6// Test that pthreads receive their own unsafe stack.
7
8#include <stdlib.h>
9#include <string.h>
10#include <pthread.h>
11#include "utils.h"
12
13static int ptr_test = 42;
14
15void *t1_start(void *ptr)
16{
17  if (ptr != &ptr_test)
18    abort();
19
20  // safe stack
21  int val = ptr_test * 5;
22
23  // unsafe stack
24  char buffer[8096]; // two pages
25  memset(buffer, val, sizeof (buffer));
26  break_optimization(buffer);
27
28  return ptr;
29}
30
31int main(int argc, char **argv)
32{
33  pthread_t t1;
34  void *ptr = NULL;
35  if (pthread_create(&t1, NULL, t1_start, &ptr_test))
36    abort();
37  if (pthread_join(t1, &ptr))
38    abort();
39  if (ptr != &ptr_test)
40    abort();
41  return 0;
42}
43