From 79186431cf2917562ba2e632326924b5594ce114 Mon Sep 17 00:00:00 2001
From: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Date: Fri, 21 Dec 2018 10:22:55 +0900
Subject: [PATCH] go/internal/packagesdriver: fix crash when GOARCH and Go
 compiler can't be determined

When run "go list" outside GOPATH, result should be empty

Change-Id: If832c46d3e4c32a2a87338cca95e3169ea3be055
Reviewed-on: https://go-review.googlesource.com/c/155557
Reviewed-by: Michael Matloob <matloob@golang.org>
---
 go/internal/packagesdriver/sizes.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/go/internal/packagesdriver/sizes.go b/go/internal/packagesdriver/sizes.go
index eecf07fee9..fdc7da0568 100644
--- a/go/internal/packagesdriver/sizes.go
+++ b/go/internal/packagesdriver/sizes.go
@@ -86,6 +86,9 @@ func GetSizesGolist(ctx context.Context, buildFlags, env []string, dir string, u
 		return nil, err
 	}
 	fields := strings.Fields(stdout.String())
+	if len(fields) < 2 {
+		return nil, fmt.Errorf("could not determine GOARCH and Go compiler")
+	}
 	goarch := fields[0]
 	compiler := fields[1]
 	return types.SizesFor(compiler, goarch), nil