code review 5416060: io: new FileInfo, FileMode types + update tree

src/pkg/go/build/build.go

 // 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.
 
 // Package build provides tools for building Go packages.
 package build
 
 import (
         "bytes"
         "errors"
@@ skipping 141 matching lines @@
 // Stale returns true if the build's inputs are newer than its outputs.
 func (s *Script) Stale() bool {
         var latest time.Time
         // get latest mtime of outputs
         for _, file := range s.Output {
                 fi, err := os.Stat(file)
                 if err != nil {
                         // any error reading output files means stale
                         return true
                 }
-                if fi.ModTime.After(latest) {
-                        latest = fi.ModTime
+                if mtime := fi.ModTime(); mtime.After(latest) {
+                        latest = mtime
                 }
         }
         for _, file := range s.Input {
                 fi, err := os.Stat(file)
-                if err != nil || fi.ModTime.After(latest) {
+                if err != nil || fi.ModTime().After(latest) {
                         // any error reading input files means stale
                         // (attempt to rebuild to figure out why)
                         return true
                 }
         }
         return false
 }
 
 // Clean removes the Script's Intermediate files.
 // It tries to remove every file and returns the first error it encounters.
@@ skipping 258 matching lines @@
         })
         b.script.addIntermediate(importC)
 
         // cc _cgo_import.ARCH
         importObj := b.obj + "_cgo_import." + b.arch
         b.cc(importObj, importC)
         outObj = append(outObj, importObj)
 
         return
 }