// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
// Use of gethostent provokes caching of some resources inside of libc.
// They are freed in __libc_thread_freeres very late in thread lifetime,
// after our ThreadFinish. __libc_thread_freeres calls free which
// previously crashed in malloc hooks.
#include "../test.h"
#include <netdb.h>
long X;
extern "C" void __sanitizer_malloc_hook(void *ptr, size_t size) {
__atomic_fetch_add(&X, 1, __ATOMIC_RELAXED);
}
extern "C" void __sanitizer_free_hook(void *ptr) {
__atomic_fetch_sub(&X, 1, __ATOMIC_RELAXED);
}
void *Thread(void *x) {
sethostent(1);
gethostbyname("llvm.org");
gethostent();
endhostent();
return NULL;
}
int main() {
pthread_t th;
pthread_create(&th, NULL, Thread, NULL);
pthread_join(th, NULL);
fprintf(stderr, "DONE\n");
return 0;
}
// CHECK: DONE