by jimteeuwen:

What steps will reproduce the problem?
Build and run the following code:

package main

import "xml"
import "strings"
import "fmt"
import "os"

func main() {
    fragment := `<test><![CDATA[ &val=foo ]]></test>`
    parser := xml.NewParser(strings.NewReader(fragment))
    
    var err os.Error

    for {
        if _, err = parser.Token(); err != nil {
            if err == os.EOF {
                return
            }
            fmt.Fprintf(os.Stderr, "Xml Error: %s\n", err)
            return
        }
    }
}

What is the expected output?
Program should run without error.

What do you see instead?
Xml Error: XML syntax error on line 1: invalid character entity &val;

Which compiler are you using (5g, 6g, 8g, gccgo)?
6g

Which operating system are you using?
64-bit ArchLinux

Which revision are you using?  (hg identify)
e1752be5d932 tip

Please provide any additional information below.
The XML parser in the Go xml package should ignore special tokens like & and < or
> when they are inside a <![CDATA[ ... ]]> tag.
The current implementation does not and consequently yields parse errors where it should
not.