libgo: update to Go 1.8 release candidate 1

    
    Compiler changes:
      * Change map assignment to use mapassign and assign value directly.
      * Change string iteration to use decoderune, faster for ASCII strings.
      * Change makeslice to take int, and use makeslice64 for larger values.
      * Add new noverflow field to hmap struct used for maps.
    
    Unresolved problems, to be fixed later:
      * Commented out test in go/types/sizes_test.go that doesn't compile.
      * Commented out reflect.TestStructOf test for padding after zero-sized field.
    
    Reviewed-on: https://go-review.googlesource.com/35231

gotools/:
	Updates for Go 1.8rc1.
	* Makefile.am (go_cmd_go_files): Add bug.go.
	(s-zdefaultcc): Write defaultPkgConfig.
	* Makefile.in: Rebuild.

From-SVN: r244456

1 files changed, 52 insertions, 0 deletions

diff --git a/libgo/go/os/stat_unix.go b/libgo/go/os/stat_unix.go
new file mode 100644
index 00000000000..1733d3f1327
--- /dev/null
+++ b/libgo/go/os/stat_unix.go
@@ -0,0 +1,52 @@
+// Copyright 2016 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.
+
+// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
+
+package os
+
+import (
+	"syscall"
+)
+
+// Stat returns the FileInfo structure describing file.
+// If there is an error, it will be of type *PathError.
+func (f *File) Stat() (FileInfo, error) {
+	if f == nil {
+		return nil, ErrInvalid
+	}
+	var fs fileStat
+	err := syscall.Fstat(f.fd, &fs.sys)
+	if err != nil {
+		return nil, &PathError{"stat", f.name, err}
+	}
+	fillFileStatFromSys(&fs, f.name)
+	return &fs, nil
+}
+
+// Stat returns a FileInfo describing the named file.
+// If there is an error, it will be of type *PathError.
+func Stat(name string) (FileInfo, error) {
+	var fs fileStat
+	err := syscall.Stat(name, &fs.sys)
+	if err != nil {
+		return nil, &PathError{"stat", name, err}
+	}
+	fillFileStatFromSys(&fs, name)
+	return &fs, nil
+}
+
+// Lstat returns a FileInfo describing the named file.
+// If the file is a symbolic link, the returned FileInfo
+// describes the symbolic link. Lstat makes no attempt to follow the link.
+// If there is an error, it will be of type *PathError.
+func Lstat(name string) (FileInfo, error) {
+	var fs fileStat
+	err := syscall.Lstat(name, &fs.sys)
+	if err != nil {
+		return nil, &PathError{"lstat", name, err}
+	}
+	fillFileStatFromSys(&fs, name)
+	return &fs, nil
+}