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// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
#include "test.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
// dup2(oldfd, newfd) races with close(newfd).
int fd;
void *Thread(void *x) {
barrier_wait(&barrier);
if (close(fd) == -1)
exit(printf("close failed\n"));
return 0;
}
int main() {
barrier_init(&barrier, 2);
fd = open("/dev/random", O_RDONLY);
int fd2 = open("/dev/random", O_RDONLY);
if (fd == -1 || fd2 == -1)
exit(printf("open failed\n"));
pthread_t th;
pthread_create(&th, 0, Thread, 0);
if (dup2(fd2, fd) == -1)
exit(printf("dup2 failed\n"));
barrier_wait(&barrier);
pthread_join(th, 0);
fprintf(stderr, "DONE\n");
}
// CHECK: WARNING: ThreadSanitizer: data race
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