// before all subsequent writes fail.
	breakAfter int

	// numWrites is the number of writes that have been done.
	numWrites int
}

// brokenConnErr is the error that brokenConn returns once exhausted.
var brokenConnErr = errors.New("too many writes to brokenConn")

func (b *brokenConn) Write(data []byte) (int, error) {
	if b.numWrites >= b.breakAfter {
		return 0, brokenConnErr
	}

		close(c)
	}()
	<-c
}

func blockSelectRecvAsync(t *testing.T) {
	const numTries = 3
	c := make(chan bool, 1)
	c2 := make(chan bool, 1)
	go func() {
		for i := 0; i < numTries; i++ {
			awaitBlockedGoroutine(t, "select", "blockSelectRecvAsync", 1)
			c <- true
		}
	}()
	for i := 0; i < numTries; i++ {
		select {
		case <-c:
		case <-c2:
		}
	}
}