From cdb33231b2d988b71f03f622fc9c3d2edccc20e0 Mon Sep 17 00:00:00 2001
From: Dave Cheney <dave@cheney.net>
Date: Sun, 29 Sep 2013 10:34:41 +1000
Subject: [PATCH] race.bash, race.bat: build a race enabled cmd/cgo before
 trying to use it

Fixes #5537.

To avoid `go install -v race std` replacing cmd/cgo with a race enabled version and another package trying to build a cgo enabled package, always build cmd/cgo race enabled before doing the rest of the build.

R=remyoudompheng, rsc, dvyukov, minux.ma
CC=golang-dev
https://golang.org/cl/14071044
---
 src/race.bash | 2 ++
 src/race.bat  | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/src/race.bash b/src/race.bash
index 3cdc5e10c1..18201f992c 100755
--- a/src/race.bash
+++ b/src/race.bash
@@ -35,6 +35,8 @@ if [ ! -f make.bash ]; then
 	exit 1
 fi
 . ./make.bash --no-banner
+# golang.org/issue/5537 - we must build a race enabled cmd/cgo before trying to use it.
+go install -race cmd/cgo
 go install -race std
 go test -race -short std
 go test -race -run=nothingplease -bench=.* -benchtime=.1s -cpu=4 std
diff --git a/src/race.bat b/src/race.bat
index 989a2e7d81..0a6aee9e2b 100644
--- a/src/race.bat
+++ b/src/race.bat
@@ -29,6 +29,9 @@ goto fail
 :continue
 call make.bat --no-banner --no-local
 if %GOBUILDFAIL%==1 goto end
+:: golang.org/issue/5537 - we must build a race enabled cmd/cgo before trying to use it.
+echo # go install -race cmd/cgo
+go install -race cmd/cgo
 echo # go install -race std
 go install -race std
 if errorlevel 1 goto fail
-- 
2.50.0