| // 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() |
| } |
