NTFS bug demonstration programs

The bug is that if you create a directory, create a file in that directory, delete the file, and then delete the directory, then repeat that many times, you'll eventually fail. I've observed this intermittently on a Windows XP SP2 system.

Here is a convenient download for this Java program:

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class Bug {
	public static void main(String[] args) throws IOException {
		File foo = new File("foo");
		for (int i = 0; i < 100; i++) {
			final File bazf = new File(foo, "baz");
			bazf.delete();
			foo.delete();
			foo.mkdir();
			OutputStream out;
			try {
				out = new FileOutputStream(new File(foo, "baz"));
			} catch (Throwable t) {
				throw new Error("Lost in iteration " + i, t);
			}
			out.close();
		}
	}
}

The typical stack trace when you run it is:

Exception in thread "main" java.lang.Error: Lost in iteration 56
	at Bug.main(Bug.java:19)
Caused by: java.io.FileNotFoundException: foo\baz (Access is denied)
	at java.io.FileOutputStream.open(Native Method)
	at java.io.FileOutputStream.(Unknown Source)
	at java.io.FileOutputStream.(Unknown Source)
	at Bug.main(Bug.java:17)

Here is a convenient download for esentially the same program written in Python:

import os
import os.path
for i in range(100):
    if os.path.exists("foo/baz"):
        os.remove("foo/baz")
    if os.path.exists("foo"):
        os.rmdir("foo")
    try:
        os.mkdir("foo")
        file("foo/baz", "w").close()
    except:
        print "lost in iteration %r" % (i,)
        raise

The typical output is:

lost in iteration 35
Traceback (most recent call last):
  File "bug.py", line 9, in ?
    os.mkdir("foo")
OSError: [Errno 13] Permission denied: 'foo'