#include <stdio.h>
#include <limits.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mount.h>

#define MNT_DETACH 2

int
main(void)
{
	char tmpdir[] = "/var/tmp/d_path-bug";
	char path[PATH_MAX];
	int status = 1;

	if (mkdir(tmpdir, 0777) != 0 ||
	    mount(tmpdir, tmpdir, NULL, MS_BIND, NULL) != 0 ||
	    chdir(tmpdir) != 0 ||
	    umount2(tmpdir, MNT_DETACH) != 0) {
		perror(tmpdir);
		goto out;
	}
	if (mkdir("subdir", 0777) != 0 ||
	    chdir("subdir") != 0) {
		perror("subdir");
		goto out2;
	}
	if (getcwd(path, sizeof(path)) == NULL) {
		perror("getcwd");
		goto out2;
	}
	printf("getcwd returned %s\n", path);
	status = 0;
out2:
	chdir("..");
	rmdir("subdir");
	chdir("/");
out:
	umount(tmpdir);
	rmdir(tmpdir);
	return status;
}