1 // RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=50 %run %t 2>&1 | FileCheck %s
2 #include <pthread.h>
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <unistd.h>
6 #include <sys/types.h>
7 #include <sys/wait.h>
8 
foo()9 void foo() {
10   fprintf(stderr, "CHILD ATEXIT\n");
11 }
12 
worker(void * unused)13 void *worker(void *unused) {
14   return 0;
15 }
16 
main()17 int main() {
18   pthread_t t;
19   pthread_create(&t, NULL, worker, NULL);
20   int pid = fork();
21   if (pid == 0) {
22     // child
23     atexit(foo);
24     fprintf(stderr, "CHILD DONE\n");
25   } else {
26     pthread_join(t, 0);
27     if (waitpid(pid, 0, 0) == -1) {
28       perror("waitpid");
29       exit(1);
30     }
31     fprintf(stderr, "PARENT DONE\n");
32   }
33 }
34 
35 // CHECK: CHILD DONE
36 // CHECK: CHILD ATEXIT
37 // CHECK: PARENT DONE
38