time: MarshalBinary and UnmarshalBinary isn't symmetrical

[bep]

See https://play.golang.org/p/q9ddVAqibt

package main

import (
    "fmt"
    "time"
)

func main() {
    var t0 time.Time
    b, _ := t0.MarshalBinary()

    var t time.Time
    t.UnmarshalBinary(b)

    fmt.Printf("%#v %#v\n", t0, t)
}

Prints:

time.Time{sec:0, nsec:0, loc:(*time.Location)(nil)} time.Time{sec:0, nsec:0, loc:(*time.Location)(0x1e2100)}

Expected the time instances to be equal.

[gopherbot]

CL https://golang.org/cl/31144 mentions this issue.

[dolmen]

This fix is not mentioned in Go 1.8 release notes. :(
Is it the right place to report this issue with the release notes, or should I open another issue?

[bradfitz]

There are hundreds of minor bug fixes not mentioned in the release notes.

But yes, opening a new bug is the way to enact change if you think we accidentally omitted this (likely) and this is user-visible enough to warrant a mention. We don't track closed issues.