1 #include <pthread.h> 2 #include <stdlib.h> 3 #include <stdio.h> 4 5 void *Thread1(void *p) { 6 *(int*)p = 42; 7 return 0; 8 } 9 10 void *Thread2(void *p) { 11 *(int*)p = 44; 12 return 0; 13 } 14 15 void *alloc() { 16 return malloc(99); 17 } 18 19 void *AllocThread(void* arg) { 20 return alloc(); 21 } 22 23 int main() { 24 void *p = 0; 25 pthread_t t[2]; 26 pthread_create(&t[0], 0, AllocThread, 0); 27 pthread_join(t[0], &p); 28 fprintf(stderr, "addr=%p\n", p); 29 pthread_create(&t[0], 0, Thread1, (char*)p + 16); 30 pthread_create(&t[1], 0, Thread2, (char*)p + 16); 31 pthread_join(t[0], 0); 32 pthread_join(t[1], 0); 33 return 0; 34 } 35 36 // CHECK: addr=[[ADDR:0x[0-9,a-f]+]] 37 // CHECK: WARNING: ThreadSanitizer: data race 38 // ... 39 // CHECK: Location is heap block of size 99 at [[ADDR]] allocated by thread 1: 40 // CHCEKL #0 malloc 41 // CHECK: #1 alloc 42 // CHECK: #2 AllocThread 43 // ... 44 // CHECK: Thread 1 (finished) created at: 45 // CHECK: #0 pthread_create 46 // CHECK: #1 main 47
