1 | // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
2 | #include <pthread.h> |
3 | #include <stdio.h> |
4 | #include <unistd.h> |
5 | #include <sys/types.h> |
6 | #include <sys/stat.h> |
7 | #include <fcntl.h> |
8 | |
9 | int fds[2]; |
10 | |
11 | void *Thread1(void *x) { |
12 | char buf; |
13 | read(fd: fds[0], buf: &buf, nbytes: 1); |
14 | close(fd: fds[0]); |
15 | return 0; |
16 | } |
17 | |
18 | void *Thread2(void *x) { |
19 | close(fd: fds[1]); |
20 | return 0; |
21 | } |
22 | |
23 | int main() { |
24 | fds[0] = open(file: "/dev/random" , O_RDONLY); |
25 | fds[1] = dup2(fd: fds[0], fd2: 100); |
26 | pthread_t t[2]; |
27 | pthread_create(newthread: &t[0], NULL, start_routine: Thread1, NULL); |
28 | pthread_create(newthread: &t[1], NULL, start_routine: Thread2, NULL); |
29 | pthread_join(th: t[0], NULL); |
30 | pthread_join(th: t[1], NULL); |
31 | fprintf(stderr, format: "OK\n" ); |
32 | } |
33 | |
34 | // CHECK-NOT: WARNING: ThreadSanitizer: data race |
35 | |