How to get the value type of a pointer through an interface?
<p>This <a href="http://play.golang.org/p/bXPV58DGF4" rel="noreferrer">playground</a> illustrates my question.</p>

<p>Basically I have a function that accepts an empty interface as argument.  I want to pass anything in and print information on the types and values.  </p>

<p>It works as expected except when I pass a pointer to a custom type (in my example, of underlying struct type).  I am not entirely sure how the reflection model is structured at that point.  Since the function signature specifies an <code>interface{}</code> argument when I call <code>reflect.Indirect(v).Kind()</code> it naturally returns <code>interface</code> but I want to know the type when the function is called.</p>

<p>Below is the same code from playground:</p>

<pre><code>package main

import (
    "fmt"
    "reflect"
)

func main() {
    var s interface{}
    s = CustomStruct{}

    PrintReflectionInfo(s)
    PrintReflectionInfo(&amp;s)
}

type CustomStruct struct {}

func PrintReflectionInfo(v interface{}) {
    // expect CustomStruct if non pointer
    fmt.Println("Actual type is:", reflect.TypeOf(v))

    // expect struct if non pointer
    fmt.Println("Value type is:", reflect.ValueOf(v).Kind())

    if reflect.ValueOf(v).Kind() == reflect.Ptr {
        // expect: CustomStruct
        fmt.Println("Indirect type is:", reflect.Indirect(reflect.ValueOf(v)).Kind()) // prints interface

        // expect: struct
        fmt.Println("Indirect value type is:", reflect.Indirect(reflect.ValueOf(v)).Kind()) // prints interface
    }

    fmt.Println("")
}
</code></pre>