text/template: cannot traverse into unexported embedded fields to get exported fields anymore #13885
Description
After the reflect shuffling, text/template rejects .foo.Bar where foo is an unexported embedded field holding Bar. It probably should allow it (since reflect does too) but still reject plain .foo.
This is simplified from a real test failure.
$ cat x.go
package main
import (
"html/template"
"log"
"os"
)
func main() {
type foo struct {
Bar int
}
type X struct {
foo
}
t := template.Must(template.New("").Parse("{{.foo.Bar}}\n"))
err := t.Execute(os.Stdout, new(X))
if err != nil {
log.Fatal(err)
}
}
$ go1.5 run x.go
0
$ go run x.go
2016/01/08 15:55:14 template: :1:6: executing "" at <.foo.Bar>: foo is an unexported field of struct type *main.X
exit status 1
$