libgo: update to go1.7rc3

    
    Reviewed-on: https://go-review.googlesource.com/25150

From-SVN: r238662

1 files changed, 5 insertions, 7 deletions

diff --git a/libgo/go/os/exec/lp_unix.go b/libgo/go/os/exec/lp_unix.go
index 3f895d5b3ba..7a302752a89 100644
--- a/libgo/go/os/exec/lp_unix.go
+++ b/libgo/go/os/exec/lp_unix.go
@@ -1,4 +1,4 @@
-// Copyright 2010 The Go Authors.  All rights reserved.
+// 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.
 
@@ -9,6 +9,7 @@ package exec
 import (
 	"errors"
 	"os"
+	"path/filepath"
 	"strings"
 )
 
@@ -42,16 +43,13 @@ func LookPath(file string) (string, error) {
 		}
 		return "", &Error{file, err}
 	}
-	pathenv := os.Getenv("PATH")
-	if pathenv == "" {
-		return "", &Error{file, ErrNotFound}
-	}
-	for _, dir := range strings.Split(pathenv, ":") {
+	path := os.Getenv("PATH")
+	for _, dir := range filepath.SplitList(path) {
 		if dir == "" {
 			// Unix shell semantics: path element "" means "."
 			dir = "."
 		}
-		path := dir + "/" + file
+		path := filepath.Join(dir, file)
 		if err := findExecutable(path); err == nil {
 			return path, nil
 		}