From: Alex Brainman <alex.brainman@gmail.com>
Date: Thu, 23 May 2013 04:13:02 +0000 (+1000)
Subject: cmd/go: check GOROOT directory is present before acting
X-Git-Tag: go1.2rc2~1429
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=d67e300f28b04c1de1a0ef5fa95f8e882314316d;p=gostls13.git

cmd/go: check GOROOT directory is present before acting

Fixes #5042.

R=golang-dev, adg, rsc
CC=golang-dev
https://golang.org/cl/7786047
---

diff --git a/src/cmd/go/main.go b/src/cmd/go/main.go
index 3180dbeed2..a09a75cd3e 100644
--- a/src/cmd/go/main.go
+++ b/src/cmd/go/main.go
@@ -144,6 +144,11 @@ func main() {
 		}
 	}
 
+	if fi, err := os.Stat(goroot); err != nil || !fi.IsDir() {
+		fmt.Fprintf(os.Stderr, "go: cannot find GOROOT directory: %v\n", goroot)
+		os.Exit(2)
+	}
+
 	for _, cmd := range commands {
 		if cmd.Name() == args[0] && cmd.Run != nil {
 			cmd.Flag.Usage = func() { cmd.Usage() }