From db3088a37c3e4743183bc4c5934c1d4ebc3ca498 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Wed, 27 Jul 2011 17:38:39 -0400
Subject: [PATCH] build: fix for noclobber users

Fixes #2020.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/4814056
---
 src/env.bash | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/env.bash b/src/env.bash
index f83012a266..a01a03e45c 100644
--- a/src/env.bash
+++ b/src/env.bash
@@ -88,6 +88,11 @@ if bison --version 2>&1 | grep 'bison++' >/dev/null 2>&1; then
 	exit 1
 fi
 
+# Issue 2020: some users configure bash to default to
+#	set +o noclobber
+# which makes >x fail if x already exists.  Restore sanity.
+set -o noclobber
+
 # Tried to use . <($MAKE ...) here, but it cannot set environment
 # variables in the version of bash that ships with OS X.  Amazing.
 eval $($MAKE --no-print-directory -f Make.inc go-env | egrep 'GOARCH|GOOS|GOHOSTARCH|GOHOSTOS|GO_ENV')
-- 
2.50.0