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

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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
This commit is contained in:
Russ Cox 2014-10-03 16:42:18 -04:00
parent a22424567c
commit 4630218538
1 changed files with 4 additions and 0 deletions
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4
misc/cgo/test/issue7978.go
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@ -29,6 +29,7 @@ static void issue7978c(uint32_t *sync) {
import "C" import "C"
import ( import (
"os"
"runtime" "runtime"
"strings" "strings"
"sync/atomic" "sync/atomic"
@ -81,6 +82,9 @@ func issue7978go() {
} }
func test7978(t *testing.T) { func test7978(t *testing.T) {
if os.Getenv("GOTRACEBACK") != "2" {
t.Fatalf("GOTRACEBACK must be 2")
}
issue7978sync = 0 issue7978sync = 0
go issue7978go() go issue7978go()
// test in c code, before callback // test in c code, before callback