[go-nuts] XML generation and array of bytes

Hi fellow gophers,

I'm working on a tool which is generating a lot of XML data (tens of
gigabytes) with random content.
All the strings inside the XML are fixed length and change on each
iteration so I replaced them with some arrays of bytes.
To make a long story short, everything went well until I tried to output an
empty string through xml.Marshal.

How can I pass an array of bytes representing the empty string to
xml.Marshal and is it possible at all ?

I tried to sum up my problem on the Go Playground at:
http://play.golang.org/p/nhTDAePqHw <http://play.golang.org/p/b3NE8mpMfj>
Any advice on the code is welcome !

Cheers,

Louis.