What version of Go are you using
go version devel +c7eb966 Wed Dec 24 07:30:28 2014 +0000 darwin/amd64

What operating system and processor architecture are you using?
osx 10.9.5 cross compiled for arm on Android 5.0.1 Nexus 5

What did you do?
Export interface with a function that returns a struct pointer

What did you expect to see?
Correctly generated code

What did you see instead?
Invalid code, line 19. The type reference is incorrect.

func (p *proxyIStringStruct) GetIt() (res_0 *golang.org/x/mobile/example/libhello/hi.StringStruct) {

full output https://gist.github.com/ChrisSmith/95e149597df2b88a5cde

To reproduce, modify libhello's hi package like so

package hi

type IStringStruct interface {
    GetIt() *StringStruct
}

type StringStruct struct {
    Name string
}

func (ss StringStruct) GetIt() *StringStruct {
    return &ss
}

func verifyImplements() {
    var _ IStringStruct = StringStruct{
        Name: "Test",
    }
}

run gobind, it will fail with

19:56: expected ')', found '/'