From 36f223dace5dcdb7afc381c51e0484ff473e2e88 Mon Sep 17 00:00:00 2001
From: Keith Randall <khr@golang.org>
Date: Fri, 9 Aug 2013 15:27:45 -0700
Subject: [PATCH] runtime: Better test tracebackability of jmpdefer when
 running a nil defer.

R=bradfitz, dvyukov
CC=golang-dev
https://golang.org/cl/12536046
---
 test/fixedbugs/issue6055.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/fixedbugs/issue6055.go b/test/fixedbugs/issue6055.go
index 4cc24d0c2c0..698f62ac956 100644
--- a/test/fixedbugs/issue6055.go
+++ b/test/fixedbugs/issue6055.go
@@ -6,11 +6,17 @@
 
 package main
 
+import "runtime"
+
 type Closer interface {
 	Close()
 }
 
 func nilInterfaceDeferCall() {
+	defer func() {
+		// make sure a traceback happens with jmpdefer on the stack
+		runtime.GC()
+	}()
 	var x Closer
 	defer x.Close()
 }