1 // RUN: %clangxx_tsan -O1 %s -o %t && %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/socket.h> 7 8 int fds[2]; 9 int X; 10 11 void *Thread1(void *x) { 12 X = 42; 13 write(fds[1], "a", 1); 14 close(fds[1]); 15 return NULL; 16 } 17 18 void *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 27 int 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 printf("OK\n"); 35 } 36 37 // CHECK-NOT: WARNING: ThreadSanitizer: data race 38
