From 55b9f3b8f505f10f85992b18bc6bec181b2a2c6f Mon Sep 17 00:00:00 2001
From: Rob Pike <r@golang.org>
Date: Fri, 24 Oct 2014 09:37:25 -0700
Subject: unsafe: document that unsafe programs are not protected The
 compatibility guideline needs to be clear about this even though it means
 adding a clause that was not there from the beginning. It has always been
 understood, so this isn't really a change in policy, just in its expression.

LGTM=bradfitz, gri, rsc
R=golang-codereviews, bradfitz, gri, rsc
CC=golang-codereviews
https://codereview.appspot.com/162060043
---
 doc/go1compat.html   | 8 ++++++++
 src/unsafe/unsafe.go | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/doc/go1compat.html b/doc/go1compat.html
index 04a6c1124..94c48d2ce 100644
--- a/doc/go1compat.html
+++ b/doc/go1compat.html
@@ -104,6 +104,14 @@ outside of tests, and using it may cause a program to fail
 to compile in future releases.
 </li>
 
+<li>
+Use of package <code>unsafe</code>. Packages that import
+<a href="/pkg/unsafe/"><code>unsafe</code></a>
+may depend on internal properties of the Go implementation.
+We reserve the right to make changes to the implementation
+that may break such programs.
+</li>
+
 </ul>
 
 <p>
diff --git a/src/unsafe/unsafe.go b/src/unsafe/unsafe.go
index 83b2e1405..79499b295 100644
--- a/src/unsafe/unsafe.go
+++ b/src/unsafe/unsafe.go
@@ -4,6 +4,9 @@
 
 /*
 	Package unsafe contains operations that step around the type safety of Go programs.
+
+	Packages that import unsafe may be non-portable and are not protected by the
+	Go 1 compatibility guidelines.
 */
 package unsafe
 
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