close(x)
		})
		b.Run("40", func(b *testing.B) {
			var x chan struct40
			for i := 0; i < b.N; i++ {
				x = make(chan struct40, 8)
			}
			close(x)
		})
	})
}

func BenchmarkChanNonblocking(b *testing.B) {
	myc := make(chan int)
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			select {
			case <-myc:
			default:
			}
		}
	})
}