diff --git a/foo.go b/foo.go
new file mode 100644
index 0000000..e93761e
--- /dev/null
+++ b/foo.go
@@ -0,0 +1,28 @@
+package main
+
+import (
+	"fmt"
+	"sync"
+)
+
+func main() {
+	c := make(chan string, 5)
+	w := sync.WaitGroup{}
+	w.Add(1); go func() { v, ok := <-c; fmt.Printf("done %s %t\n", v, ok); w.Done() }()
+	w.Add(1); go func() { v, ok := <-c; fmt.Printf("done %s %t\n", v, ok); w.Done() }()
+	w.Add(1); go func() { v, ok := <-c; fmt.Printf("done %s %t\n", v, ok); w.Done() }()
+	c<-"foo"
+	//c<-"foo"
+	//c<-"foo"
+	//c<-"foo"
+	//c<-"foo"
+	//c<-"foo"
+	close(c)
+	fmt.Println("closed")
+	w.Add(1); go func() { v, ok := <-c; fmt.Printf("done %s %t\n", v, ok); w.Done() }()
+	w.Add(1); go func() { v, ok := <-c; fmt.Printf("done %s %t\n", v, ok); w.Done() }()
+	w.Add(1); go func() { v, ok := <-c; fmt.Printf("done %s %t\n", v, ok); w.Done() }()
+	w.Add(1); go func() { v, ok := <-c; fmt.Printf("done %s %t\n", v, ok); w.Done() }()
+	w.Add(1); go func() { v, ok := <-c; fmt.Printf("done %s %t\n", v, ok); w.Done() }()
+	w.Wait()
+}
diff --git a/foo2.go b/foo2.go
new file mode 100644
index 0000000..6fef5b8
--- /dev/null
+++ b/foo2.go
@@ -0,0 +1,7 @@
+package main
+
+func main() {
+	c := make(chan string, 1)
+	c<-"foo"
+	<-c
+}