compiler-rt/lib/asan/tests/asan_racy_double_free_test.cpp

   1 #include <pthread.h>
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4
   5 const int N = 1000;
   6 void *x[N];
   7
   8 void *Thread1(void *unused) {
   9   for (int i = 0; i < N; i++) {
  10     fprintf(stderr, "%s %d\n", __func__, i);
  11     free(x[i]);
  12   }
  13   return NULL;
  14 }
  15
  16 void *Thread2(void *unused) {
  17   for (int i = 0; i < N; i++) {
  18     fprintf(stderr, "%s %d\n", __func__, i);
  19     free(x[i]);
  20   }
  21   return NULL;
  22 }
  23
  24 int main() {
  25   for (int i = 0; i < N; i++)
  26     x[i] = malloc(128);
  27   pthread_t t[2];
  28   pthread_create(&t[0], 0, Thread1, 0);
  29   pthread_create(&t[1], 0, Thread2, 0);
  30   pthread_join(t[0], 0);
  31   pthread_join(t[1], 0);
  32 }