1 files changed, 41 insertions, 0 deletions
diff --git a/src/test/ui/transmutability/abstraction/const_generic_fn.rs b/src/test/ui/transmutability/abstraction/const_generic_fn.rs
new file mode 100644
index 000000000..94c38bb28
--- /dev/null
+++ b/src/test/ui/transmutability/abstraction/const_generic_fn.rs
@@ -0,0 +1,41 @@
+// check-pass
+//! An array must have the correct length.
+
+#![crate_type = "lib"]
+#![feature(transmutability)]
+#![allow(dead_code, incomplete_features, non_camel_case_types)]
+
+mod assert {
+    use std::mem::BikeshedIntrinsicFrom;
+    pub struct Context;
+
+    pub fn array_like<T, E, const N: usize>()
+    where
+        T: BikeshedIntrinsicFrom<[E; N], Context, false, false, false, true>,
+        [E; N]: BikeshedIntrinsicFrom<T, Context, false, false, false, true>
+    {}
+}
+
+fn len_0() {
+    type Array = [u8; 0];
+    #[repr(C)] struct Struct();
+    assert::array_like::<Struct, u8, 0>();
+}
+
+fn len_1() {
+    type Array = [u8; 1];
+    #[repr(C)] struct Struct(u8);
+    assert::array_like::<Struct, u8, 1>();
+}
+
+fn len_2() {
+    type Array = [u8; 2];
+    #[repr(C)] struct Struct(u8, u8);
+    assert::array_like::<Struct, u8, 2>();
+}
+
+fn len_3() {
+    type Array = [u8; 3];
+    #[repr(C)] struct Struct(u8, u8, u8);
+    assert::array_like::<Struct, u8, 3>();
+}