#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include <limits.h>

int
main()
{
        int fd;
        char *envtmp;
        char path[MAXPATHLEN];
	struct stat sb;

        envtmp = getenv("TMPDIR");
        (void)sprintf(path,
            "%s/bt.XXXXXX", envtmp ? envtmp : "/tmp");

	fprintf(stderr, "%s\n", path);
        if ((fd = mkstemp(path)) != -1) {
		if (fstat(fd, &sb))
			fprintf(stderr, "first fstat error, errno %d\n", errno);
		else
			fprintf(stderr, "before unlink: mode 0x%x fmt 0x%x size %ld\n", sb.st_mode, sb.st_mode&_IFMT, (long) sb.st_size);
                (void)unlink(path);
		if (fstat(fd, &sb))
			fprintf(stderr, "second fstat error, errno %d\n", errno);
		else
			fprintf(stderr, "after unlink: mode 0x%x fmt 0x%x size %ld\n", sb.st_mode, sb.st_mode&_IFMT, (long) sb.st_size);
	} else
		fprintf(stderr, "mkstemp failed, errno %d\n", errno);
	(void) close(fd);
}