forked from OSchip/llvm-project
43 lines
792 B
C++
43 lines
792 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
|
|
#include <pthread.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <sched.h>
|
|
|
|
struct Cache {
|
|
int x;
|
|
explicit Cache(int x)
|
|
: x(x) {
|
|
}
|
|
};
|
|
|
|
void *AsyncInit(void *p) {
|
|
return new Cache((int)(long)p);
|
|
}
|
|
|
|
Cache *CreateCache() {
|
|
pthread_t t;
|
|
pthread_create(&t, 0, AsyncInit, (void*)(long)rand());
|
|
void *res;
|
|
pthread_join(t, &res);
|
|
return (Cache*)res;
|
|
}
|
|
|
|
void *Thread1(void *x) {
|
|
static Cache *c = CreateCache();
|
|
if (c->x >= RAND_MAX)
|
|
exit(1);
|
|
return 0;
|
|
}
|
|
|
|
int main() {
|
|
pthread_t t[2];
|
|
pthread_create(&t[0], 0, Thread1, 0);
|
|
pthread_create(&t[1], 0, Thread1, 0);
|
|
pthread_join(t[0], 0);
|
|
pthread_join(t[1], 0);
|
|
fprintf(stderr, "PASS\n");
|
|
}
|
|
|
|
// CHECK-NOT: WARNING: ThreadSanitizer: data race
|