From: Russ Cox <rsc@golang.org>
Date: Fri, 3 Oct 2014 20:42:18 +0000 (-0400)
Subject: misc/cgo/test: fail issue 7978 with clearer error when GOTRACEBACK != 2
X-Git-Tag: go1.4beta1~202
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=46302185383a079957a0e72c785ef0c507ab1d46;p=gostls13.git

misc/cgo/test: fail issue 7978 with clearer error when GOTRACEBACK != 2

The test doesn't work with GOTRACEBACK != 2.
Diagnose that failure mode.

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews, r
https://golang.org/cl/152970043
---

diff --git a/misc/cgo/test/issue7978.go b/misc/cgo/test/issue7978.go
index 39864476ce..5feed07b95 100644
--- a/misc/cgo/test/issue7978.go
+++ b/misc/cgo/test/issue7978.go
@@ -29,6 +29,7 @@ static void issue7978c(uint32_t *sync) {
 import "C"
 
 import (
+	"os"
 	"runtime"
 	"strings"
 	"sync/atomic"
@@ -81,6 +82,9 @@ func issue7978go() {
 }
 
 func test7978(t *testing.T) {
+	if os.Getenv("GOTRACEBACK") != "2" {
+		t.Fatalf("GOTRACEBACK must be 2")
+	}
 	issue7978sync = 0
 	go issue7978go()
 	// test in c code, before callback