by carlchatfield:

What does 'go version' print?
go version devel +8bd9a77feba7 Tue Mar 11 16:20:57 2014 +0900 linux/386

What steps reproduce the problem?
If possible, include a link to a program on play.golang.org.
This is a regression, the current build on the playground rearranges
the variadic arguments correctly.

http://play.golang.org/p/1EjzxFPszJ

func main() {
    ft := reflect.TypeOf(func(...int){})
    fn := reflect.MakeFunc(ft, func(in []reflect.Value) []reflect.Value {
        fmt.Printf("%v\n", in)
        return nil
    })
    fn.Call([]reflect.Value{reflect.ValueOf(1), reflect.ValueOf(2)})
}

What happened?
Arguments are received as [<int Value>, <int Value>]

What should have happened instead?
[<[]int Value>]