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- // 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()
- }
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