Got an "only structs and maps are supported" on merge two identical structs

[iSynth]

I have a two identical structs and I want to merge them.

type MyStruct struct {
    Field string
}

a := MyStruct{Field:"A"}
b := MyStruct{Field:"B"}

mergo.MergeWithOverwrite(&a, b)

panic: only structs and maps are supported

[darccio]

I'm unable to reproduce this. It works as expected:

package main

import (
        "fmt"
        "github.com/imdario/mergo"
)

type MyStruct struct {
    Field string
}

func main() {
        a := MyStruct{Field:"A"}
        b := MyStruct{Field:"B"}

        mergo.MergeWithOverwrite(&a, b)
        fmt.Printf("%v\n", a)
}

Output:

dario@thinkpad /tmp $ go run test_mergo.go
{B}