Please answer these questions before submitting your issue. Thanks!

• What version of Go are you using (go version)?
  1.6
• What operating system and processor architecture are you using (go env)?
  darwin, amd64
• What did you do?

Start with a.g:

package main

func f() {}
func main() {
    f(); /* something */ f()
}

go fmt, got

package main

func f() {}
func main() {
    f() /* something */ f()
}

Semicolon is removed, but endl is not inserted. The previously valid program is now broken.

• What did you expect to see?
  The previously valid program remains valid.
• What did you see instead?
  The previously valid program is now broken.