1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s 2 #include "test.h" 3 #include <sys/types.h> 4 #include <sys/stat.h> 5 #include <fcntl.h> 6 7 int fd; 8 char buf; 9 10 void *Thread1(void *x) { 11 buf = 1; 12 barrier_wait(&barrier); 13 return NULL; 14 } 15 16 void *Thread2(void *x) { 17 write(fd, &buf, 1); 18 return NULL; 19 } 20 21 int main() { 22 barrier_init(&barrier, 2); 23 fd = open("/dev/null", O_WRONLY); 24 if (fd < 0) return 1; 25 pthread_t t[2]; 26 pthread_create(&t[0], NULL, Thread1, NULL); 27 barrier_wait(&barrier); 28 pthread_create(&t[1], NULL, Thread2, NULL); 29 pthread_join(t[0], NULL); 30 pthread_join(t[1], NULL); 31 close(fd); 32 } 33 34 // CHECK: WARNING: ThreadSanitizer: data race 35 // CHECK: Read of size 1 36 // CHECK: #0 write 37 // CHECK: Previous write of size 1 38 // CHECK: #0 Thread1 39
