From d6f80e1a4c84ea8df878c43b9a89f71c2a0325a1 Mon Sep 17 00:00:00 2001
From: Rob Pike <r@golang.org>
Date: Wed, 29 Jun 2011 15:41:09 +1000
Subject: [PATCH] regexp: document that Regexp is thread-safe.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4667047
---
 src/pkg/regexp/regexp.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pkg/regexp/regexp.go b/src/pkg/regexp/regexp.go
index 44da8b6710..e8d4c087cf 100644
--- a/src/pkg/regexp/regexp.go
+++ b/src/pkg/regexp/regexp.go
@@ -158,6 +158,7 @@ func (i *instr) print() {
 
 // Regexp is the representation of a compiled regular expression.
 // The public interface is entirely through methods.
+// A Regexp is safe for concurrent use by multiple goroutines.
 type Regexp struct {
 	expr        string // the original expression
 	prefix      string // initial plain text string