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

src/pkg/go/token/position.go

 // Copyright 2010 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 token
 
 import (
         "fmt"
         "sort"
         "sync"
@@ skipping 465 matching lines @@
                 h := i + (j-i)/2 // avoid overflow when computing h
                 // i ≤ h < j
                 if a[h] <= x {
                         i = h + 1
                 } else {
                         j = h
                 }
         }
         return i - 1
 }