[dev.power64] code review 160200044: build: merge default into dev.power64

src/pkg/io/io.go

 // Copyright 2009 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.
 
 // Package io provides basic interfaces to I/O primitives.
 // Its primary job is to wrap existing implementations of such primitives,
 // such as those in package os, into shared public interfaces that
 // abstract the functionality, plus some other related primitives.
 //
 // Because these interfaces and primitives wrap lower-level operations with
@@ skipping 479 matching lines @@
 
 func (t *teeReader) Read(p []byte) (n int, err error) {
         n, err = t.r.Read(p)
         if n > 0 {
                 if n, err := t.w.Write(p[:n]); err != nil {
                         return n, err
                 }
         }
         return
 }