From 6d68d1aefa2484c697f3f634e99edd3d2238d6e7 Mon Sep 17 00:00:00 2001
From: Derek Parker <derek.parker@coreos.com>
Date: Sun, 27 Dec 2015 18:36:54 -0800
Subject: [PATCH] cmd/trace: Fix nil pointer panic in trace subcommand

---
 cmd/dlv/main.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cmd/dlv/main.go b/cmd/dlv/main.go
index 7bf47122..6a86a06c 100644
--- a/cmd/dlv/main.go
+++ b/cmd/dlv/main.go
@@ -186,6 +186,9 @@ starts and attaches to it, and enables you to immediately begin debugging your p
 				for {
 					select {
 					case state := <-stateChan:
+						if state == nil {
+							return 0
+						}
 						if state.Err != nil {
 							fmt.Fprintln(os.Stderr, state.Err)
 							return 0