From: Shenghou Ma <minux@golang.org>
Date: Thu, 12 Nov 2015 20:27:51 +0000 (-0500)
Subject: os: add document for ErrInvalid
X-Git-Tag: go1.6beta1~480
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=85ca578d4a71ef8d56bc828a38f42482ff264028;p=gostls13.git

os: add document for ErrInvalid

Fixes #12391.

Change-Id: I31211cd711c035151785c3083571594d15c7d93e
Reviewed-on: https://go-review.googlesource.com/16873
Reviewed-by: Andrew Gerrand <adg@golang.org>
---

diff --git a/src/os/error.go b/src/os/error.go
index 8810e69306..e26ce27970 100644
--- a/src/os/error.go
+++ b/src/os/error.go
@@ -10,7 +10,7 @@ import (
 
 // Portable analogs of some common system call errors.
 var (
-	ErrInvalid    = errors.New("invalid argument")
+	ErrInvalid    = errors.New("invalid argument") // methods on File will return this error when the receiver is nil
 	ErrPermission = errors.New("permission denied")
 	ErrExist      = errors.New("file already exists")
 	ErrNotExist   = errors.New("file does not exist")