src/cmd/cgo/internal/testsanitizers/testdata/tsan4.go

   1 // Copyright 2016 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package main
   6
   7 // Check that calls to C.malloc/C.free do not trigger TSAN false
   8 // positive reports.
   9
  10 // #cgo CFLAGS: -fsanitize=thread
  11 // #cgo LDFLAGS: -fsanitize=thread
  12 // #include <stdlib.h>
  13 import "C"
  14
  15 import (
  16         "runtime"
  17         "sync"
  18 )
  19
  20 func main() {
  21         var wg sync.WaitGroup
  22         for i := 0; i < 10; i++ {
  23                 wg.Add(1)
  24                 go func() {
  25                         defer wg.Done()
  26                         for i := 0; i < 100; i++ {
  27                                 p := C.malloc(C.size_t(i * 10))
  28                                 runtime.Gosched()
  29                                 C.free(p)
  30                         }
  31                 }()
  32         }
  33         wg.Wait()
  34 }