1 files changed, 75 insertions, 0 deletions
diff --git a/src/runtime/race/testdata/io_test.go b/src/runtime/race/testdata/io_test.go
new file mode 100644
index 0000000..3303cb0
--- /dev/null
+++ b/src/runtime/race/testdata/io_test.go
@@ -0,0 +1,75 @@
+// Copyright 2012 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 race_test
+
+import (
+	"fmt"
+	"net"
+	"net/http"
+	"os"
+	"path/filepath"
+	"sync"
+	"testing"
+	"time"
+)
+
+func TestNoRaceIOFile(t *testing.T) {
+	x := 0
+	path := t.TempDir()
+	fname := filepath.Join(path, "data")
+	go func() {
+		x = 42
+		f, _ := os.Create(fname)
+		f.Write([]byte("done"))
+		f.Close()
+	}()
+	for {
+		f, err := os.Open(fname)
+		if err != nil {
+			time.Sleep(1e6)
+			continue
+		}
+		buf := make([]byte, 100)
+		count, err := f.Read(buf)
+		if count == 0 {
+			time.Sleep(1e6)
+			continue
+		}
+		break
+	}
+	_ = x
+}
+
+var (
+	regHandler  sync.Once
+	handlerData int
+)
+
+func TestNoRaceIOHttp(t *testing.T) {
+	regHandler.Do(func() {
+		http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+			handlerData++
+			fmt.Fprintf(w, "test")
+			handlerData++
+		})
+	})
+	ln, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("net.Listen: %v", err)
+	}
+	defer ln.Close()
+	go http.Serve(ln, nil)
+	handlerData++
+	_, err = http.Get("http://" + ln.Addr().String())
+	if err != nil {
+		t.Fatalf("http.Get: %v", err)
+	}
+	handlerData++
+	_, err = http.Get("http://" + ln.Addr().String())
+	if err != nil {
+		t.Fatalf("http.Get: %v", err)
+	}
+	handlerData++
+}