From 914ab8a23f2beec9ff98d211f8aa9f6ee0ab1fa1 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Wed, 21 Dec 2011 17:17:28 -0500
Subject: [PATCH] os/exec: dump lsof on failure

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5504063
---
 src/pkg/os/exec/exec_test.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pkg/os/exec/exec_test.go b/src/pkg/os/exec/exec_test.go
index a015cbe96cc..d7e61e73795 100644
--- a/src/pkg/os/exec/exec_test.go
+++ b/src/pkg/os/exec/exec_test.go
@@ -262,6 +262,7 @@ func TestHelperProcess(*testing.T) {
 			f, err := os.Open(os.Args[0])
 			if err != nil {
 				fmt.Printf("error opening file with expected fd %d: %v", wantfd, err)
+				fmt.Println(Command("lsof", "-p", fmt.Sprint(os.Getpid())).CombinedOutput())
 				os.Exit(1)
 			}
 			if got := f.Fd(); got != wantfd {