A potential bug in unmarshal with named slices

000unmarshnameslice.go

package main

import (
  "fmt"
  "xml"
  "bytes"
)

type Slice struct {
  ID     string   "ident" // or `xml:"ident"` with a newish weekly
  Number []string "num"   // or `xml:"num"`
}

func main() {
	s := &Slice{}
	fmt.Println("err", xml.Unmarshal(bytes.NewBufferString(`
<slice>
  <ident>himynameis</ident>
  <num>1</num>
  <num>2</num>
  <num>3</num>
</slice>
	`), s))
	fmt.Printf("val %#v\n", s)
}

001expected.txt

err <nil>
val &main.Slice{ID:"himynameis", Number:[]string{"1", "2", "3"}}

002actual.txt

err <nil>
val &main.Slice{ID:"", Number:[]string{}}

003xmldoc.txt

* If the XML element contains a sub-element whose name
   matches a field whose tag is neither "attr" nor "chardata",
   Unmarshal maps the sub-element to that struct field.
   Otherwise, if the struct has a field named Any, unmarshal
   maps the sub-element to that struct field.