1*bcaeed49SFangrui Song // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2*bcaeed49SFangrui Song #include <pthread.h>
3*bcaeed49SFangrui Song #include <stdio.h>
4*bcaeed49SFangrui Song #include <unistd.h>
5*bcaeed49SFangrui Song #include <sys/types.h>
6*bcaeed49SFangrui Song #include <sys/socket.h>
7*bcaeed49SFangrui Song
8*bcaeed49SFangrui Song int fds[2];
9*bcaeed49SFangrui Song int X;
10*bcaeed49SFangrui Song
Thread1(void * x)11*bcaeed49SFangrui Song void *Thread1(void *x) {
12*bcaeed49SFangrui Song X = 42;
13*bcaeed49SFangrui Song write(fds[1], "a", 1);
14*bcaeed49SFangrui Song close(fds[1]);
15*bcaeed49SFangrui Song return NULL;
16*bcaeed49SFangrui Song }
17*bcaeed49SFangrui Song
Thread2(void * x)18*bcaeed49SFangrui Song void *Thread2(void *x) {
19*bcaeed49SFangrui Song char buf;
20*bcaeed49SFangrui Song while (read(fds[0], &buf, 1) != 1) {
21*bcaeed49SFangrui Song }
22*bcaeed49SFangrui Song X = 43;
23*bcaeed49SFangrui Song close(fds[0]);
24*bcaeed49SFangrui Song return NULL;
25*bcaeed49SFangrui Song }
26*bcaeed49SFangrui Song
main()27*bcaeed49SFangrui Song int main() {
28*bcaeed49SFangrui Song socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
29*bcaeed49SFangrui Song pthread_t t[2];
30*bcaeed49SFangrui Song pthread_create(&t[0], NULL, Thread1, NULL);
31*bcaeed49SFangrui Song pthread_create(&t[1], NULL, Thread2, NULL);
32*bcaeed49SFangrui Song pthread_join(t[0], NULL);
33*bcaeed49SFangrui Song pthread_join(t[1], NULL);
34*bcaeed49SFangrui Song fprintf(stderr, "OK\n");
35*bcaeed49SFangrui Song }
36*bcaeed49SFangrui Song
37*bcaeed49SFangrui Song // CHECK-NOT: WARNING: ThreadSanitizer: data race
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