Bufio is not thread-safe

[GoogleCodeExporter]

What steps will reproduce the problem?
1. create a bunch of threads writing/reading to one bufio instance
2.
3.

What is the expected output? What do you see instead?

You expect the output to just work, but the concurrent readers and writers blow 
the buffer. 

Original issue reported on code.google.com by [email protected] on 19 Jan 2009 at 9:12