38 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s2#include <pthread.h>3#include <stdio.h>4#include <unistd.h>5#include <sys/types.h>6#include <sys/socket.h>7 8int fds[2];9int X;10 11void *Thread1(void *x) {12 X = 42;13 write(fds[1], "a", 1);14 close(fds[1]);15 return NULL;16}17 18void *Thread2(void *x) {19 char buf;20 while (read(fds[0], &buf, 1) != 1) {21 }22 X = 43;23 close(fds[0]);24 return NULL;25}26 27int main() {28 socketpair(AF_UNIX, SOCK_STREAM, 0, fds);29 pthread_t t[2];30 pthread_create(&t[0], NULL, Thread1, NULL);31 pthread_create(&t[1], NULL, Thread2, NULL);32 pthread_join(t[0], NULL);33 pthread_join(t[1], NULL);34 fprintf(stderr, "OK\n");35}36 37// CHECK-NOT: WARNING: ThreadSanitizer: data race38