1 files changed, 69 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 000000000..9eb3552dc
--- /dev/null
+++ b/src/runtime/race/testdata/io_test.go
@@ -0,0 +1,69 @@
+// 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"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestNoRaceIOFile(t *testing.T) {
+	x := 0
+	path, _ := ioutil.TempDir("", "race_test")
+	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
+}
+
+func TestNoRaceIOHttp(t *testing.T) {
+	x := 0
+	go func() {
+		http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+			x = 41
+			fmt.Fprintf(w, "test")
+			x = 42
+		})
+		err := http.ListenAndServe(":23651", nil)
+		if err != nil {
+			t.Fatalf("http.ListenAndServe: %v", err)
+		}
+	}()
+	time.Sleep(1e7)
+	x = 1
+	_, err := http.Get("http://127.0.0.1:23651")
+	if err != nil {
+		t.Fatalf("http.Get: %v", err)
+	}
+	x = 2
+	_, err = http.Get("http://127.0.0.1:23651")
+	if err != nil {
+		t.Fatalf("http.Get: %v", err)
+	}
+	x = 3
+}