forked from OSchip/llvm-project
37 lines
858 B
C++
37 lines
858 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
|
|
#include <pthread.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
|
|
void *Thread1(void *x) {
|
|
sleep(1);
|
|
int *p = (int*)x;
|
|
p[0] = 1;
|
|
return NULL;
|
|
}
|
|
|
|
void *Thread2(void *x) {
|
|
char *p = (char*)x;
|
|
p[2] = 1;
|
|
return NULL;
|
|
}
|
|
|
|
int main() {
|
|
int *data = new int(42);
|
|
fprintf(stderr, "ptr1=%p\n", data);
|
|
fprintf(stderr, "ptr2=%p\n", (char*)data + 2);
|
|
pthread_t t[2];
|
|
pthread_create(&t[0], NULL, Thread1, data);
|
|
pthread_create(&t[1], NULL, Thread2, data);
|
|
pthread_join(t[0], NULL);
|
|
pthread_join(t[1], NULL);
|
|
delete data;
|
|
}
|
|
|
|
// CHECK: ptr1=[[PTR1:0x[0-9,a-f]+]]
|
|
// CHECK: ptr2=[[PTR2:0x[0-9,a-f]+]]
|
|
// CHECK: WARNING: ThreadSanitizer: data race
|
|
// CHECK: Write of size 4 at [[PTR1]] by thread T1:
|
|
// CHECK: Previous write of size 1 at [[PTR2]] by thread T2:
|