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// RUN: %clangxx_tsan -O1 %s -o %t && %run %t
// Data race randomly triggered.
// UNSUPPORTED: target={{.*netbsd.*}}
// Make sure TSan doesn't deadlock on a file stream lock at program shutdown.
// See https://github.com/google/sanitizers/issues/454
// https://github.com/google/sanitizers/issues/1733
// UNSUPPORTED: glibc-2.38
#ifdef __FreeBSD__
#define _WITH_GETLINE // to declare getline()
#endif
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
void *thread(void *unused) {
char *line = NULL;
size_t size;
int fd[2];
pipe(fd);
// Forge a non-standard stream to make sure it's not closed.
FILE *stream = fdopen(fd[0], "r");
while (1) {
volatile int res = getline(&line, &size, stream);
(void)res;
}
return NULL;
}
int main() {
pthread_t t;
pthread_attr_t a;
pthread_attr_init(&a);
pthread_attr_setdetachstate(&a, PTHREAD_CREATE_DETACHED);
pthread_create(&t, &a, thread, NULL);
pthread_attr_destroy(&a);
fprintf(stderr, "DONE\n");
return 0;
// ThreadSanitizer used to hang here because of a deadlock on a file stream.
}
// CHECK: DONE
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