[go-nuts] gob ignores default values, bug or feature?

[Hoping White]

Hi, all

I find that gob encoding ignores fields when they have zero values.

package main

import (
        "bytes"
        "encoding/gob"
)

type Type struct {
        Data uint32
}

func main() {
        var t Type
        buffer := bytes.NewBuffer(nil)
        encoder := gob.NewEncoder(buffer)
        encoder.Encode(t)
        decoder := gob.NewDecoder(buffer)
        t.Data = 123
        decoder.Decode(&t)
        println(t.Data)
}

I expect this example output is 0, but 123 found.

I wonder if this is a bug or an feature?

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