1 // RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s 2 #include <pthread.h> 3 #include <stddef.h> 4 #include <stdio.h> 5 #include <string.h> 6 #include <unistd.h> 7 8 char *data = new char[10]; 9 char *data1 = new char[10]; 10 char *data2 = new char[10]; 11 12 void *Thread1(void *x) { 13 memcpy(data+5, data1, 1); 14 return NULL; 15 } 16 17 void *Thread2(void *x) { 18 sleep(1); 19 memcpy(data+3, data2, 4); 20 return NULL; 21 } 22 23 int main() { 24 fprintf(stderr, "addr=%p\n", &data[5]); 25 pthread_t t[2]; 26 pthread_create(&t[0], NULL, Thread1, NULL); 27 pthread_create(&t[1], NULL, Thread2, NULL); 28 pthread_join(t[0], NULL); 29 pthread_join(t[1], NULL); 30 return 0; 31 } 32 33 // CHECK: addr=[[ADDR:0x[0-9,a-f]+]] 34 // CHECK: WARNING: ThreadSanitizer: data race 35 // CHECK: Write of size 1 at [[ADDR]] by thread T2: 36 // CHECK: #0 memcpy 37 // CHECK: #1 Thread2 38 // CHECK: Previous write of size 1 at [[ADDR]] by thread T1: 39 // CHECK: #0 memcpy 40 // CHECK: #1 Thread1 41
