gofmt: fails with for range over array/slice literal containing composite literal(s) of named type

[stevenblenkinsop]

Before filing a bug, please check whether it has been fixed since
the latest release: run "hg pull -u" and retry what you did to
reproduce the problem.  Thanks.

What steps will reproduce the problem?
1. gofmt this program:

package main

type T []int

func main() {
    for _ = range []T{T{42}} {
    }
}

What is the expected output? What do you see instead?
.../TestGo.go:6:21: expected '}', found '{'
.../TestGo.go:7:2: expected declaration, found '}'
.../TestGo.go:8:1: expected declaration, found '}'

What is your $GOOS?  $GOARCH?
linux 386

Which revision are you using?  (hg identify)
e7d0863b48db tip

Please provide any additional information below.
gofmt does work when the slice literal is in round brackets 
("([]T{T{42}})"). It strips the outer brackets, meaning the next time it 
won't work.

Attachments:

1. TestGo.go (76 bytes)

[adg]

Comment 1:

Verified bug.

Owner changed to [email protected].

Status changed to Accepted.

[griesemer]

Comment 2:

Status changed to Started.

[griesemer]

Comment 3:

This issue was closed by revision 2bfc2d7.

Status changed to Fixed.