// RUN: %clangxx_msan -m64 -O0 %s -o %t && %run %t
// Check that when TLS block is reused between threads, its shadow is cleaned.
#include <pthread.h>
#include <stdio.h>
int __thread x;
void *ThreadFn(void *) {
if (!x)
printf("zzz\n");
int y;
int * volatile p = &y;
x = *p;
return 0;
}
int main(void) {
pthread_t t;
for (int i = 0; i < 100; ++i) {
pthread_create(&t, 0, ThreadFn, 0);
pthread_join(t, 0);
}
return 0;
}