// errorcheck
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// issue 2089 - internal compiler error
package main
import (
"io"
"os"
)
func echo(fd io.ReadWriterCloser) { // ERROR "undefined.*io.ReadWriterCloser"
var buf [1024]byte
for {
n, err := fd.Read(buf)
if err != nil {
break
}
fd.Write(buf[0:n])
}
}
func main() {
fd, _ := os.Open("a.txt")
echo(fd)
}