v811_spc009/prebuilts/go/darwin-x86/doc/progs/eff_unused1.go

package main

import (
	"fmt"
	"io"
	"log"
	"os"
)

func main() {
	fd, err := os.Open("test.go")
	if err != nil {
		log.Fatal(err)
	}
	// TODO: use fd.
}