What version of Go are you using (go version)?

$ go version
go version go1.15.6 linux/amd64

What did you do?

I like to write code such as the following:

type description struct {
	fileName       string              `json:"-"`
	loadTime       time.Time           `json:"-"`
	modTime        time.Time           `json:"-"`
	fileSize       int64               `json:"-"`
	Description    string              `json:"description,omitempty"`
        ...
}

The unexported fields have a json:"-" tag, so that the resulting behaviour doesn't change if I happen to export the fields later. Unfortunately, this causes go vet warning:

group/group.go:567:2: struct field fileName has json tag but is not exported

There is apparently no way to disable this warning without disabling all JSON-related checks. Please disable the warning in the particular case of a json:"-" tag, or at least provide a way to disable it without disabling all JSON-related checks.

What did you expect to see?

go vet doesn't warn about json:"-" tags on unexported fields, only about non-trivial json tags.

What did you see instead?

go vet complains, and there is no way to avoid the warning short of disabling all JSON-related checking.