mirror of
https://github.com/golang/go
synced 2024-11-08 18:46:16 -07:00
41 lines
708 B
Go
41 lines
708 B
Go
|
// Copyright 2016 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
// Setting an environment variable in a cgo program changes the C
|
||
|
|
// environment. Test that this does not confuse the race detector.
|
||
|
|
|
||
|
|
/*
|
||
|
|
#cgo CFLAGS: -fsanitize=thread
|
||
|
|
#cgo LDFLAGS: -fsanitize=thread
|
||
|
|
*/
|
||
|
|
import "C"
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"os"
|
||
|
|
"sync"
|
||
|
|
"time"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
var wg sync.WaitGroup
|
||
|
|
var mu sync.Mutex
|
||
|
|
f := func() {
|
||
|
|
defer wg.Done()
|
||
|
|
for i := 0; i < 100; i++ {
|
||
|
|
time.Sleep(time.Microsecond)
|
||
|
|
mu.Lock()
|
||
|
|
s := fmt.Sprint(i)
|
||
|
|
os.Setenv("TSAN_TEST"+s, s)
|
||
|
|
mu.Unlock()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
wg.Add(2)
|
||
|
|
go f()
|
||
|
|
go f()
|
||
|
|
wg.Wait()
|
||
|
|
}
|