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// RUN: %clangxx_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
#include <pthread.h>
#include <stddef.h>
#include <stdio.h>
#include <unistd.h>
void *Thread1(void *x) {
int *p = (int*)x;
p[0] = 1;
return NULL;
}
void *Thread2(void *x) {
sleep(1);
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 1 at [[PTR2]] by thread T2:
// CHECK: Previous write of size 4 at [[PTR1]] by thread T1:
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