! unparam .
cmp stdout stdout.golden

-- go.mod --
module testdata.tld/foo
-- stdout.golden --
foo.go:3:19: oneUnused - b is unused
-- foo.go --
package foo

func oneUnused(a, b int) int {
	return a + 123
}

type RecursiveIface interface {
	Foo(RecursiveIface)
}

var _ = 3
