Add check to make sure we don't exceed maximum allows size

src/lib.rs

@@ -96,7 +96,7 @@ use core::{
 
 #[cfg(loom)]
 use loom::sync::{
-    atomic::{AtomicU64, AtomicUsize, Ordering},
+    atomic::{AtomicUsize, Ordering},
     Arc,
 };
 
@@ -483,6 +483,13 @@ impl<T: Clone, const N: usize> Clone for Receiver<T, N> {
 /// # });
 /// ```
 pub fn channel<T: Clone, const N: usize>() -> (Sender<T, N>, Receiver<T, N>) {
+    // TODO: replace with compile time assert
+    assert!(
+        N <= MAX_LEN,
+        "The buffer size must be less than {}",
+        MAX_LEN
+    );
+
     let queue = Arc::new(InnerChannel::<T, N>::new());
     (
         Sender {

src/tests.rs

@@ -13,6 +13,14 @@ macro_rules! loom {
     };
 }
 
+#[test]
+#[should_panic]
+fn test_channel_too_large() {
+    loom!({
+        let _ = channel::<i32, { MAX_LEN + 1 }>();
+    });
+}
+
 #[test]
 fn test_push_pop() {
     loom!({